缓存弹幕抓取结果并合并并发请求

Serve font assets with caching and test missing-font handling
优先使用刮削元数据匹配弹幕剧集
2026-09-28 11:16:37 +08:00 · 2026-09-12 11:02:24 +08:00 · 2026-09-12 10:33:51 +08:00 · 2026-09-12 10:27:55 +08:00 · 2026-09-12 01:00:19 +08:00 · 2026-09-11 21:30:30 +08:00
169 changed files with 9923 additions and 976 deletions
@@ -14,6 +14,7 @@ verify-cache/
 verify-media/
 verify-downloads/
 .codex-*
+.codex/
 .tmp/
 .tmp_*
 .tmp-deploy-*
@@ -66,6 +66,7 @@ config.yaml
 .tmp-live-backups/
 .tmp-*
 .codex-*
+.codex/
 downloads/
 media/
 *.pid
@@ -76,6 +76,9 @@ func TestServeSPAServesAssetsImmutableAndBypassesAPIRoutes(t *testing.T) {
 	if err := os.MkdirAll(filepath.Join(webDir, "assets"), 0o755); err != nil {
 		t.Fatal(err)
 	}
+	if err := os.MkdirAll(filepath.Join(webDir, "fonts"), 0o755); err != nil {
+		t.Fatal(err)
+	}
 	if err := os.MkdirAll(filepath.Join(webDir, "brand"), 0o755); err != nil {
 		t.Fatal(err)
 	}
@@ -85,6 +88,9 @@ func TestServeSPAServesAssetsImmutableAndBypassesAPIRoutes(t *testing.T) {
 	if err := os.WriteFile(filepath.Join(webDir, "assets", "app.js"), []byte("console.log('ok')"), 0o644); err != nil {
 		t.Fatal(err)
 	}
+	if err := os.WriteFile(filepath.Join(webDir, "fonts", "geist-400.woff2"), []byte("wOF2-test-font"), 0o644); err != nil {
+		t.Fatal(err)
+	}
 	if err := os.WriteFile(filepath.Join(webDir, "brand", "mebox-logo.svg"), []byte("<svg></svg>"), 0o644); err != nil {
 		t.Fatal(err)
 	}
@@ -105,6 +111,29 @@ func TestServeSPAServesAssetsImmutableAndBypassesAPIRoutes(t *testing.T) {
 		t.Fatalf("asset Cache-Control = %q, want immutable", got)
 	}

+	fontReq := httptest.NewRequest(http.MethodGet, "/fonts/geist-400.woff2", nil)
+	fontResp := httptest.NewRecorder()
+	router.ServeHTTP(fontResp, fontReq)
+	if fontResp.Code != http.StatusOK {
+		t.Fatalf("font status = %d, want 200", fontResp.Code)
+	}
+	if got := fontResp.Header().Get("Cache-Control"); !strings.Contains(got, "max-age=86400") {
+		t.Fatalf("font Cache-Control = %q, want max-age=86400", got)
+	}
+	if got := fontResp.Body.String(); got != "wOF2-test-font" {
+		t.Fatalf("font body = %q, want wOF2-test-font", got)
+	}
+
+	missingFontReq := httptest.NewRequest(http.MethodGet, "/fonts/missing.woff2", nil)
+	missingFontResp := httptest.NewRecorder()
+	router.ServeHTTP(missingFontResp, missingFontReq)
+	if missingFontResp.Code != http.StatusNotFound {
+		t.Fatalf("missing font status = %d, want 404", missingFontResp.Code)
+	}
+	if strings.Contains(missingFontResp.Body.String(), "index") {
+		t.Fatalf("missing font should not serve SPA index: %q", missingFontResp.Body.String())
+	}
+
 	brandReq := httptest.NewRequest(http.MethodGet, "/brand/mebox-logo.svg", nil)
 	brandResp := httptest.NewRecorder()
 	router.ServeHTTP(brandResp, brandReq)
@@ -59,6 +59,13 @@ func serveSPA(r *gin.Engine, root fs.FS) {
 		c.Next()
 	})
 	assets.GET("/*filepath", serveFSDir(root, "assets"))
+	fonts := r.Group("/fonts")
+	fonts.Use(middleware.GzipStatic())
+	fonts.Use(func(c *gin.Context) {
+		c.Header("Cache-Control", "public, max-age=86400")
+		c.Next()
+	})
+	fonts.GET("/*filepath", serveFSDir(root, "fonts"))
 	brand := r.Group("/brand")
 	brand.Use(func(c *gin.Context) {
 		setNoCacheHeaders(c)
@@ -70,11 +77,11 @@ func serveSPA(r *gin.Engine, root fs.FS) {
 		r.GET(rootFile, serveFSFile(root, name))
 		r.HEAD(rootFile, serveFSFile(root, name))
 	}
-		r.NoRoute(middleware.GzipStatic(), func(c *gin.Context) {
-			if handler.TryHandleEmbyNormalizedRoute(c, r) {
-				return
-			}
-			path := c.Request.URL.Path
+	r.NoRoute(middleware.GzipStatic(), func(c *gin.Context) {
+		if handler.TryHandleEmbyNormalizedRoute(c, r) {
+			return
+		}
+		path := c.Request.URL.Path
 		if shouldBypassSPAFallback(path) {
 			c.Status(http.StatusNotFound)
 			return
@@ -11,42 +11,48 @@ require (
 	github.com/golang-jwt/jwt/v5 v5.2.2
 	github.com/google/uuid v1.6.0
 	github.com/gorilla/websocket v1.5.3
+	github.com/metatube-community/metatube-sdk-go v1.4.0
 	github.com/redis/go-redis/v9 v9.7.0
 	github.com/shirou/gopsutil/v3 v3.24.5
 	github.com/spf13/viper v1.18.2
 	github.com/stretchr/testify v1.11.1
 	github.com/ulikunitz/xz v0.5.12
 	go.uber.org/zap v1.27.0
-	golang.org/x/crypto v0.48.0
-	golang.org/x/sys v0.41.0
+	golang.org/x/crypto v0.49.0
+	golang.org/x/image v0.37.0
+	golang.org/x/sync v0.20.0
+	golang.org/x/sys v0.42.0
 	golang.org/x/time v0.15.0
 	gopkg.in/yaml.v3 v3.0.1
-	gorm.io/driver/postgres v1.5.7
-	gorm.io/gorm v1.30.0
+	gorm.io/driver/postgres v1.6.0
+	gorm.io/gorm v1.31.1
 )

 require (
-	github.com/bytedance/gopkg v0.1.3 // indirect
+	github.com/bytedance/gopkg v0.1.4 // indirect
 	github.com/bytedance/sonic v1.15.0 // indirect
 	github.com/bytedance/sonic/loader v0.5.0 // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/cloudwego/base64x v0.1.6 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
+	github.com/disintegration/imaging v1.6.3-0.20201218193011-d40f48ce0f09 // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
-	github.com/gabriel-vasile/mimetype v1.4.12 // indirect
+	github.com/esimov/pigo v1.4.7-0.20240801095032-7465ed14de47 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.13 // indirect
 	github.com/gin-contrib/sse v1.1.0 // indirect
-	github.com/glebarez/go-sqlite v1.21.2 // indirect
+	github.com/glebarez/go-sqlite v1.22.0 // indirect
 	github.com/go-ole/go-ole v1.2.6 // indirect
 	github.com/go-playground/locales v0.14.1 // indirect
 	github.com/go-playground/universal-translator v0.18.1 // indirect
 	github.com/go-playground/validator/v10 v10.30.1 // indirect
-	github.com/goccy/go-json v0.10.5 // indirect
+	github.com/goccy/go-json v0.10.6 // indirect
 	github.com/goccy/go-yaml v1.19.2 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/jackc/pgpassfile v1.0.0 // indirect
-	github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a // indirect
-	github.com/jackc/pgx/v5 v5.4.3 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
+	github.com/jackc/pgx/v5 v5.8.0 // indirect
+	github.com/jackc/puddle/v2 v2.2.2 // indirect
 	github.com/jinzhu/inflection v1.0.0 // indirect
 	github.com/jinzhu/now v1.1.5 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
@@ -58,6 +64,7 @@ require (
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/ncruces/go-strftime v1.0.0 // indirect
 	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/power-devops/perfstat v0.0.0-20210106213030-5aafc221ea8c // indirect
@@ -79,14 +86,14 @@ require (
 	github.com/yusufpapurcu/wmi v1.2.4 // indirect
 	go.mongodb.org/mongo-driver/v2 v2.5.0 // indirect
 	go.uber.org/multierr v1.10.0 // indirect
-	golang.org/x/arch v0.22.0 // indirect
-	golang.org/x/exp v0.0.0-20230905200255-921286631fa9 // indirect
-	golang.org/x/net v0.51.0 // indirect
+	golang.org/x/arch v0.25.0 // indirect
+	golang.org/x/exp v0.0.0-20251023183803-a4bb9ffd2546 // indirect
+	golang.org/x/net v0.52.0 // indirect
 	golang.org/x/text v0.35.0 // indirect
-	google.golang.org/protobuf v1.36.10 // indirect
+	google.golang.org/protobuf v1.36.11 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
-	modernc.org/libc v1.22.5 // indirect
-	modernc.org/mathutil v1.5.0 // indirect
-	modernc.org/memory v1.5.0 // indirect
-	modernc.org/sqlite v1.23.1 // indirect
+	modernc.org/libc v1.70.0 // indirect
+	modernc.org/mathutil v1.7.1 // indirect
+	modernc.org/memory v1.11.0 // indirect
+	modernc.org/sqlite v1.47.0 // indirect
 )
@@ -4,8 +4,8 @@ github.com/bsm/ginkgo/v2 v2.12.0 h1:Ny8MWAHyOepLGlLKYmXG4IEkioBysk6GpaRTLC8zwWs=
 github.com/bsm/ginkgo/v2 v2.12.0/go.mod h1:SwYbGRRDovPVboqFv0tPTcG1sN61LM1Z4ARdbAV9g4c=
 github.com/bsm/gomega v1.27.10 h1:yeMWxP2pV2fG3FgAODIY8EiRE3dy0aeFYt4l7wh6yKA=
 github.com/bsm/gomega v1.27.10/go.mod h1:JyEr/xRbxbtgWNi8tIEVPUYZ5Dzef52k01W3YH0H+O0=
-github.com/bytedance/gopkg v0.1.3 h1:TPBSwH8RsouGCBcMBktLt1AymVo2TVsBVCY4b6TnZ/M=
-github.com/bytedance/gopkg v0.1.3/go.mod h1:576VvJ+eJgyCzdjS+c4+77QF3p7ubbtiKARP3TxducM=
+github.com/bytedance/gopkg v0.1.4 h1:oZnQwnX82KAIWb7033bEwtxvTqXcYMxDBaQxo5JJHWM=
+github.com/bytedance/gopkg v0.1.4/go.mod h1:v1zWfPm21Fb+OsyXN2VAHdL6TBb2L88anLQgdyje6R4=
 github.com/bytedance/sonic v1.15.0 h1:/PXeWFaR5ElNcVE84U0dOHjiMHQOwNIx3K4ymzh/uSE=
 github.com/bytedance/sonic v1.15.0/go.mod h1:tFkWrPz0/CUCLEF4ri4UkHekCIcdnkqXw9VduqpJh0k=
 github.com/bytedance/sonic/loader v0.5.0 h1:gXH3KVnatgY7loH5/TkeVyXPfESoqSBSBEiDd5VjlgE=
@@ -20,22 +20,26 @@ github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
+github.com/disintegration/imaging v1.6.3-0.20201218193011-d40f48ce0f09 h1:MJFqtdxTq94XqUgg7DcGCaOIXrDTJE/tPHK66Jshguc=
+github.com/disintegration/imaging v1.6.3-0.20201218193011-d40f48ce0f09/go.mod h1:44/5580QXChDfwIclfc/PCwrr44amcmDAg8hxG0Ewe4=
 github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
 github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
+github.com/esimov/pigo v1.4.7-0.20240801095032-7465ed14de47 h1:48iGRx9HamDuG4pCbPG5IXt4bKHhgn33KGynzHUgeIA=
+github.com/esimov/pigo v1.4.7-0.20240801095032-7465ed14de47/go.mod h1:bIH3W2QoHvchgAPl6DUwIUguIHJwvMS6sePQIvhxPTc=
 github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHkI4W8=
 github.com/frankban/quicktest v1.14.6/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
 github.com/fsnotify/fsnotify v1.7.0 h1:8JEhPFa5W2WU7YfeZzPNqzMP6Lwt7L2715Ggo0nosvA=
 github.com/fsnotify/fsnotify v1.7.0/go.mod h1:40Bi/Hjc2AVfZrqy+aj+yEI+/bRxZnMJyTJwOpGvigM=
-github.com/gabriel-vasile/mimetype v1.4.12 h1:e9hWvmLYvtp846tLHam2o++qitpguFiYCKbn0w9jyqw=
-github.com/gabriel-vasile/mimetype v1.4.12/go.mod h1:d+9Oxyo1wTzWdyVUPMmXFvp4F9tea18J8ufA774AB3s=
+github.com/gabriel-vasile/mimetype v1.4.13 h1:46nXokslUBsAJE/wMsp5gtO500a4F3Nkz9Ufpk2AcUM=
+github.com/gabriel-vasile/mimetype v1.4.13/go.mod h1:d+9Oxyo1wTzWdyVUPMmXFvp4F9tea18J8ufA774AB3s=
 github.com/gin-contrib/gzip v1.2.6 h1:OtN8DplD5DNZCSLAnQ5HxRkD2qZ5VU+JhOrcfJrcRvg=
 github.com/gin-contrib/gzip v1.2.6/go.mod h1:BQy8/+JApnRjAVUplSGZiVtD2k8GmIE2e9rYu/hLzzU=
 github.com/gin-contrib/sse v1.1.0 h1:n0w2GMuUpWDVp7qSpvze6fAu9iRxJY4Hmj6AmBOU05w=
 github.com/gin-contrib/sse v1.1.0/go.mod h1:hxRZ5gVpWMT7Z0B0gSNYqqsSCNIJMjzvm6fqCz9vjwM=
 github.com/gin-gonic/gin v1.12.0 h1:b3YAbrZtnf8N//yjKeU2+MQsh2mY5htkZidOM7O0wG8=
 github.com/gin-gonic/gin v1.12.0/go.mod h1:VxccKfsSllpKshkBWgVgRniFFAzFb9csfngsqANjnLc=
-github.com/glebarez/go-sqlite v1.21.2 h1:3a6LFC4sKahUunAmynQKLZceZCOzUthkRkEAl9gAXWo=
-github.com/glebarez/go-sqlite v1.21.2/go.mod h1:sfxdZyhQjTM2Wry3gVYWaW072Ri1WMdWJi0k6+3382k=
+github.com/glebarez/go-sqlite v1.22.0 h1:uAcMJhaA6r3LHMTFgP0SifzgXg46yJkgxqyuyec+ruQ=
+github.com/glebarez/go-sqlite v1.22.0/go.mod h1:PlBIdHe0+aUEFn+r2/uthrWq4FxbzugL0L8Li6yQJbc=
 github.com/glebarez/sqlite v1.11.0 h1:wSG0irqzP6VurnMEpFGer5Li19RpIRi2qvQz++w0GMw=
 github.com/glebarez/sqlite v1.11.0/go.mod h1:h8/o8j5wiAsqSPoWELDUdJXhjAhsVliSn7bWZjOhrgQ=
 github.com/go-ole/go-ole v1.2.6 h1:/Fpf6oFPoeFik9ty7siob0G6Ke8QvQEuVcuChpwXzpY=
@@ -48,8 +52,8 @@ github.com/go-playground/universal-translator v0.18.1 h1:Bcnm0ZwsGyWbCzImXv+pAJn
 github.com/go-playground/universal-translator v0.18.1/go.mod h1:xekY+UJKNuX9WP91TpwSH2VMlDf28Uj24BCp08ZFTUY=
 github.com/go-playground/validator/v10 v10.30.1 h1:f3zDSN/zOma+w6+1Wswgd9fLkdwy06ntQJp0BBvFG0w=
 github.com/go-playground/validator/v10 v10.30.1/go.mod h1:oSuBIQzuJxL//3MelwSLD5hc2Tu889bF0Idm9Dg26cM=
-github.com/goccy/go-json v0.10.5 h1:Fq85nIqj+gXn/S5ahsiTlK3TmC85qgirsdTP/+DeaC4=
-github.com/goccy/go-json v0.10.5/go.mod h1:oq7eo15ShAhp70Anwd5lgX2pLfOS3QCiwU/PULtXL6M=
+github.com/goccy/go-json v0.10.6 h1:p8HrPJzOakx/mn/bQtjgNjdTcN+/S6FcG2CTtQOrHVU=
+github.com/goccy/go-json v0.10.6/go.mod h1:oq7eo15ShAhp70Anwd5lgX2pLfOS3QCiwU/PULtXL6M=
 github.com/goccy/go-yaml v1.19.2 h1:PmFC1S6h8ljIz6gMRBopkjP1TVT7xuwrButHID66PoM=
 github.com/goccy/go-yaml v1.19.2/go.mod h1:XBurs7gK8ATbW4ZPGKgcbrY1Br56PdM69F7LkFRi1kA=
 github.com/golang-jwt/jwt/v5 v5.2.2 h1:Rl4B7itRWVtYIHFrSNd7vhTiz9UpLdi6gZhZ3wEeDy8=
@@ -58,20 +62,25 @@ github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
-github.com/google/pprof v0.0.0-20221118152302-e6195bd50e26 h1:Xim43kblpZXfIBQsbuBVKCudVG457BR2GZFIz3uw3hQ=
-github.com/google/pprof v0.0.0-20221118152302-e6195bd50e26/go.mod h1:dDKJzRmX4S37WGHujM7tX//fmj1uioxKzKxz3lo4HJo=
+github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e h1:ijClszYn+mADRFY17kjQEVQ1XRhq2/JR1M3sGqeJoxs=
+github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e/go.mod h1:boTsfXsheKC2y+lKOCMpSfarhxDeIzfZG1jqGcPl3cA=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/gorilla/websocket v1.5.3 h1:saDtZ6Pbx/0u+bgYQ3q96pZgCzfhKXGPqt7kZ72aNNg=
 github.com/gorilla/websocket v1.5.3/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
+github.com/hashicorp/golang-lru v0.5.4 h1:YDjusn29QI/Das2iO9M0BHnIbxPeyuCHsjMW+lJfyTc=
+github.com/hashicorp/golang-lru/v2 v2.0.7 h1:a+bsQ5rvGLjzHuww6tVxozPZFVghXaHOwFs4luLUK2k=
+github.com/hashicorp/golang-lru/v2 v2.0.7/go.mod h1:QeFd9opnmA6QUJc5vARoKUSoFhyfM2/ZepoAG6RGpeM=
 github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
 github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsIM=
 github.com/jackc/pgpassfile v1.0.0/go.mod h1:CEx0iS5ambNFdcRtxPj5JhEz+xB6uRky5eyVu/W2HEg=
-github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a h1:bbPeKD0xmW/Y25WS6cokEszi5g+S0QxI/d45PkRi7Nk=
-github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a/go.mod h1:5TJZWKEWniPve33vlWYSoGYefn3gLQRzjfDlhSJ9ZKM=
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@@ -92,6 +101,8 @@ github.com/magiconair/properties v1.8.7 h1:IeQXZAiQcpL9mgcAe1Nu6cX9LLw6ExEHKjN0V
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@@ -99,6 +110,8 @@ github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
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@@ -112,11 +125,10 @@ github.com/quic-go/quic-go v0.59.0 h1:OLJkp1Mlm/aS7dpKgTc6cnpynnD2Xg7C1pwL6vy/SA
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@@ -173,28 +185,38 @@ go.uber.org/multierr v1.10.0 h1:S0h4aNzvfcFsC3dRF1jLoaov7oRaKqRGC/pUEJ2yvPQ=
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@@ -203,15 +225,35 @@ gopkg.in/ini.v1 v1.67.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
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+modernc.org/sortutil v1.2.1/go.mod h1:7ZI3a3REbai7gzCLcotuw9AC4VZVpYMjDzETGsSMqJE=
+modernc.org/sqlite v1.47.0 h1:R1XyaNpoW4Et9yly+I2EeX7pBza/w+pmYee/0HJDyKk=
+modernc.org/sqlite v1.47.0/go.mod h1:hWjRO6Tj/5Ik8ieqxQybiEOUXy0NJFNp2tpvVpKlvig=
+modernc.org/strutil v1.2.1 h1:UneZBkQA+DX2Rp35KcM69cSsNES9ly8mQWD71HKlOA0=
+modernc.org/strutil v1.2.1/go.mod h1:EHkiggD70koQxjVdSBM3JKM7k6L0FbGE5eymy9i3B9A=
+modernc.org/token v1.1.0 h1:Xl7Ap9dKaEs5kLoOQeQmPWevfnk/DM5qcLcYlA8ys6Y=
+modernc.org/token v1.1.0/go.mod h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM=
@@ -48,6 +48,7 @@ func setDefaults(v *viper.Viper) {
 	v.SetDefault("cache.redis_url", "")
 	v.SetDefault("cache.redis_prefix", "mebox")
 	v.SetDefault("cache.media_ttl_seconds", 90)
+	v.SetDefault("cache.emby_latest_ttl_seconds", 300)

 	v.SetDefault("search.backend", "")
 	v.SetDefault("search.opensearch_url", "")
@@ -124,6 +124,11 @@ type CacheConfig struct {
 	RedisURL           string `mapstructure:"redis_url"`
 	RedisPrefix        string `mapstructure:"redis_prefix"`
 	MediaTTLSeconds    int    `mapstructure:"media_ttl_seconds"`
+	// EmbyLatestTTLSeconds 是 Emby「最新添加」(Items/Latest) 的缓存时长。
+	// 客户端刷新首页时会并发请求全部媒体库的 Latest（生产环境观察到 73 个
+	// 并发），缓存过短会让这批请求同时穿透并各自重建 payload，在低配主机
+	// 上造成秒级延迟。默认 300 秒，新入库内容最迟 5 分钟后出现在最新列表。
+	EmbyLatestTTLSeconds int `mapstructure:"emby_latest_ttl_seconds"`
 }

 type SearchConfig struct {
@@ -3,6 +3,7 @@ package handler

 import (
 	"net/http"
+	"strings"

 	"github.com/gin-gonic/gin"

@@ -14,7 +15,13 @@ import (
 // specific danmaku library chosen by the user after a disambiguation.
 func getDanmakuHandler(svc *service.Container) gin.HandlerFunc {
 	return func(c *gin.Context) {
-		res, err := svc.Danmaku.Fetch(c.Request.Context(), c.Param("id"), c.Query("kw"), c.Query("episodeId"))
+		uid := currentUserID(c)
+		// 弹幕合并偏好按用户存储：这里读取后作为本次抓取的选项传入。
+		opts := service.DanmakuFetchOptions{
+			MergeSources: svc.Danmaku.MergeSourcesEnabled(c.Request.Context(), uid),
+		}
+		res, err := svc.Danmaku.FetchWithOptions(
+			c.Request.Context(), c.Param("id"), c.Query("kw"), c.Query("episodeId"), opts)
 		if err != nil {
 			c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
 			return
@@ -28,6 +35,34 @@ func getDanmakuHandler(svc *service.Container) gin.HandlerFunc {
 // admin privileges.
 func getDanmakuConfigHandler(svc *service.Container) gin.HandlerFunc {
 	return func(c *gin.Context) {
-		c.JSON(http.StatusOK, svc.Danmaku.Config(c.Request.Context()))
+		c.JSON(http.StatusOK, svc.Danmaku.ConfigForUser(c.Request.Context(), currentUserID(c)))
+	}
+}
+
+// updateDanmakuSettingsHandler 持久化当前用户的弹幕偏好。目前只有合并开关，
+// 落在 user 表上（与字幕简繁偏好同样按用户存储）。
+func updateDanmakuSettingsHandler(svc *service.Container) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		uid := currentUserID(c)
+		if strings.TrimSpace(uid) == "" {
+			c.JSON(http.StatusUnauthorized, gin.H{"error": "not authenticated"})
+			return
+		}
+		var req struct {
+			MergeSources *bool `json:"merge_sources"`
+		}
+		if err := c.ShouldBindJSON(&req); err != nil {
+			c.JSON(http.StatusBadRequest, gin.H{"error": "invalid body"})
+			return
+		}
+		if req.MergeSources == nil {
+			c.JSON(http.StatusBadRequest, gin.H{"error": "merge_sources is required"})
+			return
+		}
+		if err := svc.Danmaku.SetMergeSources(c.Request.Context(), uid, *req.MergeSources); err != nil {
+			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+			return
+		}
+		c.JSON(http.StatusOK, gin.H{"merge_sources": *req.MergeSources})
 	}
 }
@@ -0,0 +1,135 @@
+package handler
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/gin-gonic/gin"
+	"github.com/glebarez/sqlite"
+	"go.uber.org/zap"
+	"gorm.io/gorm"
+
+	"github.com/truewhile/MeBox/internal/middleware"
+	"github.com/truewhile/MeBox/internal/model"
+	"github.com/truewhile/MeBox/internal/repository"
+	"github.com/truewhile/MeBox/internal/service"
+)
+
+// newDanmakuSettingsContext 构造带登录用户的最小 gin 上下文。
+func newDanmakuSettingsContext(t *testing.T, svc *service.Container, method, path, body string, userID string) (*gin.Context, *httptest.ResponseRecorder) {
+	t.Helper()
+	gin.SetMode(gin.TestMode)
+	w := httptest.NewRecorder()
+	c, _ := gin.CreateTestContext(w)
+	c.Request = httptest.NewRequest(method, path, bytes.NewBufferString(body))
+	c.Request.Header.Set("Content-Type", "application/json")
+	if userID != "" {
+		c.Set(middleware.CtxUserID, userID)
+	}
+	return c, w
+}
+
+func newDanmakuSettingsService(t *testing.T) *service.Container {
+	t.Helper()
+	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
+	if err != nil {
+		t.Fatalf("open db: %v", err)
+	}
+	if err := db.AutoMigrate(&model.Setting{}, &model.Media{}, &model.User{}); err != nil {
+		t.Fatalf("migrate: %v", err)
+	}
+	repos := repository.New(db)
+	user := model.User{Username: "settings-user", PasswordHash: "x", Role: "user", IsActive: true}
+	user.ID = "user-1"
+	if err := repos.User.Create(t.Context(), &user); err != nil {
+		t.Fatalf("create user: %v", err)
+	}
+	return &service.Container{
+		Repo:    repos,
+		Danmaku: service.NewDanmakuService(zap.NewNop(), repos),
+	}
+}
+
+func TestUpdateDanmakuSettingsPersistsMergeSources(t *testing.T) {
+	svc := newDanmakuSettingsService(t)
+
+	c, w := newDanmakuSettingsContext(t, svc, http.MethodPut, "/danmaku/settings",
+		`{"merge_sources":true}`, "user-1")
+	updateDanmakuSettingsHandler(svc)(c)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("status = %d, want 200 (body=%s)", w.Code, w.Body.String())
+	}
+	var resp struct {
+		MergeSources bool `json:"merge_sources"`
+	}
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("decode: %v", err)
+	}
+	if !resp.MergeSources {
+		t.Fatal("response should echo merge_sources=true")
+	}
+	// 落库校验：重新读取应为 true。
+	if !svc.Danmaku.MergeSourcesEnabled(t.Context(), "user-1") {
+		t.Fatal("merge preference was not persisted")
+	}
+}
+
+func TestUpdateDanmakuSettingsRejectsMissingField(t *testing.T) {
+	svc := newDanmakuSettingsService(t)
+
+	c, w := newDanmakuSettingsContext(t, svc, http.MethodPut, "/danmaku/settings", `{}`, "user-1")
+	updateDanmakuSettingsHandler(svc)(c)
+
+	if w.Code != http.StatusBadRequest {
+		t.Fatalf("status = %d, want 400 (body=%s)", w.Code, w.Body.String())
+	}
+}
+
+func TestUpdateDanmakuSettingsRequiresAuthentication(t *testing.T) {
+	svc := newDanmakuSettingsService(t)
+
+	c, w := newDanmakuSettingsContext(t, svc, http.MethodPut, "/danmaku/settings",
+		`{"merge_sources":true}`, "")
+	updateDanmakuSettingsHandler(svc)(c)
+
+	if w.Code != http.StatusUnauthorized {
+		t.Fatalf("status = %d, want 401 (body=%s)", w.Code, w.Body.String())
+	}
+}
+
+// config 接口应把当前用户的合并偏好带出去，供面板初始化。
+func TestGetDanmakuConfigIncludesPerUserMergePreference(t *testing.T) {
+	svc := newDanmakuSettingsService(t)
+
+	c, w := newDanmakuSettingsContext(t, svc, http.MethodGet, "/danmaku/config", "", "user-1")
+	getDanmakuConfigHandler(svc)(c)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("status = %d, want 200", w.Code)
+	}
+	var cfg struct {
+		MergeSources bool `json:"merge_sources"`
+	}
+	if err := json.Unmarshal(w.Body.Bytes(), &cfg); err != nil {
+		t.Fatalf("decode: %v", err)
+	}
+	if cfg.MergeSources {
+		t.Fatal("default merge preference should be false")
+	}
+
+	if err := svc.Danmaku.SetMergeSources(t.Context(), "user-1", true); err != nil {
+		t.Fatalf("set: %v", err)
+	}
+	c2, w2 := newDanmakuSettingsContext(t, svc, http.MethodGet, "/danmaku/config", "", "user-1")
+	getDanmakuConfigHandler(svc)(c2)
+	if err := json.Unmarshal(w2.Body.Bytes(), &cfg); err != nil {
+		t.Fatalf("decode: %v", err)
+	}
+	if !cfg.MergeSources {
+		t.Fatal("config should reflect the persisted merge preference")
+	}
+}
@@ -0,0 +1,121 @@
+package handler
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/gin-gonic/gin"
+	"github.com/glebarez/sqlite"
+	"go.uber.org/zap"
+	"gorm.io/gorm"
+
+	"github.com/truewhile/MeBox/internal/config"
+	"github.com/truewhile/MeBox/internal/model"
+	"github.com/truewhile/MeBox/internal/repository"
+	"github.com/truewhile/MeBox/internal/service"
+)
+
+// newEmbyCompatTestRouter 构造一个挂载了完整 Emby 路由表的测试引擎。
+func newEmbyCompatTestRouter(t *testing.T, secret string) *gin.Engine {
+	t.Helper()
+	gin.SetMode(gin.TestMode)
+	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
+	if err != nil {
+		t.Fatalf("open db: %v", err)
+	}
+	if err := db.AutoMigrate(model.AllModels()...); err != nil {
+		t.Fatalf("migrate: %v", err)
+	}
+	repos := repository.New(db)
+	if err := repos.User.Create(t.Context(), &model.User{
+		Base:         model.Base{ID: "user-1"},
+		Username:     "tester",
+		PasswordHash: "x",
+		Role:         "admin",
+		Tier:         "plus",
+		IsActive:     true,
+	}); err != nil {
+		t.Fatalf("create user: %v", err)
+	}
+	router := gin.New()
+	registerEmbyRoutes(router, secret, &service.Container{
+		Repo: repos,
+		Emby: service.NewEmbyService(&config.Config{}, zap.NewNop(), repos),
+	})
+	return router
+}
+
+func TestEmbyAdditionalPartsReturnsEmptyArray(t *testing.T) {
+	const secret = "test-secret"
+	router := newEmbyCompatTestRouter(t, secret)
+
+	req := httptest.NewRequest(http.MethodGet, "/emby/Videos/msgo-series-abc/AdditionalParts", nil)
+	req.Header.Set("X-Emby-Token", signedTestToken(t, secret))
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("status = %d, want 200 (body=%s)", w.Code, w.Body.String())
+	}
+	// 必须命中 AdditionalParts 静态路由并返回空数组，而不是被 /Videos/:id/:seg
+	// 的 HLS 兜底路由接走返回空 404。
+	var payload []any
+	if err := json.Unmarshal(w.Body.Bytes(), &payload); err != nil {
+		t.Fatalf("decode body %q: %v", w.Body.String(), err)
+	}
+	if len(payload) != 0 {
+		t.Fatalf("expected an empty array, got %v", payload)
+	}
+}
+
+func TestEmbyItemImagesWithoutTypeReturnsArray(t *testing.T) {
+	router := newEmbyCompatTestRouter(t, "test-secret")
+
+	// 不带 Type 的图片清单接口是公开路由，不要求 token，与带 Type 的
+	// 图片字节流一致（客户端缓存 URL 时会丢 token）。
+	req := httptest.NewRequest(http.MethodGet, "/emby/Items/unknown-item/Images", nil)
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("status = %d, want 200 (body=%s)", w.Code, w.Body.String())
+	}
+	if ct := w.Header().Get("Content-Type"); ct == "" || ct[:16] != "application/json" {
+		t.Fatalf("content type = %q, want application/json", ct)
+	}
+	var payload []any
+	if err := json.Unmarshal(w.Body.Bytes(), &payload); err != nil {
+		t.Fatalf("decode body %q: %v", w.Body.String(), err)
+	}
+}
+
+func TestEmbyItemImagesLowerCaseRouteIsRegistered(t *testing.T) {
+	router := newEmbyCompatTestRouter(t, "test-secret")
+
+	req := httptest.NewRequest(http.MethodGet, "/emby/items/unknown-item/images", nil)
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("status = %d, want 200 (body=%s)", w.Code, w.Body.String())
+	}
+}
+
+func TestEmbyUserImageWithoutAvatarReturnsCacheableNotFound(t *testing.T) {
+	router := newEmbyCompatTestRouter(t, "test-secret")
+
+	req := httptest.NewRequest(http.MethodGet, "/emby/Users/user-1/Images/Primary", nil)
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, req)
+
+	// 用户没有头像时 Emby 同样返回 404，但响应必须可缓存，否则客户端会
+	// 在每次进入设置页时重复请求（线上曾观察到每分钟一次的重试）。
+	if w.Code != http.StatusNotFound {
+		t.Fatalf("status = %d, want 404 (body=%s)", w.Code, w.Body.String())
+	}
+	if cc := w.Header().Get("Cache-Control"); cc != "public, max-age=86400" {
+		t.Fatalf("Cache-Control = %q, want the cacheable directive", cc)
+	}
+}
@@ -50,6 +50,49 @@ func embyItemImageHandler(svc *service.Container) gin.HandlerFunc {
 	}
 }

+// embyItemImagesHandler 处理不带 Type 的 GET /Items/{Id}/Images，返回图片
+// 清单（Emby 的 ImageInfo 数组）。客户端据此决定详情页加载哪些图。
+func embyItemImagesHandler(svc *service.Container) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		id := strings.TrimSpace(c.Param("id"))
+		if svc == nil || svc.Emby == nil || id == "" {
+			c.JSON(http.StatusOK, []any{})
+			return
+		}
+		infos := svc.Emby.ImageInfos(c.Request.Context(), id)
+		if infos == nil {
+			infos = []map[string]any{}
+		}
+		c.JSON(http.StatusOK, infos)
+	}
+}
+
+// embyUserImageHandler 处理 /Users/{UserId}/Images/{Type}。Emby 对未设置
+// 头像的用户同样返回 404，但响应必须带缓存头，否则客户端每次进入设置页
+// 都会重复请求同一个空头像（日志中曾观察到每分钟重试）。
+func embyUserImageHandler(svc *service.Container) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		uid := strings.TrimSpace(c.Param("userId"))
+		raw := ""
+		if svc != nil && svc.Emby != nil && uid != "" {
+			raw = svc.Emby.UserAvatarURL(c.Request.Context(), uid)
+		}
+		if raw == "" || svc == nil || svc.ImageProxy == nil {
+			embyMissingAvatar(c)
+			return
+		}
+		if err := svc.ImageProxy.Serve(c.Request.Context(), c.Writer, c.Request, raw); err != nil {
+			embyMissingAvatar(c)
+		}
+	}
+}
+
+// embyMissingAvatar 以 Emby 语义返回"该用户没有头像"，并允许客户端长期缓存。
+func embyMissingAvatar(c *gin.Context) {
+	c.Header("Cache-Control", "public, max-age=86400")
+	c.Status(http.StatusNotFound)
+}
+
 func clearEmbyImageNoStoreHeaders(c *gin.Context) {
 	c.Writer.Header().Del("Cache-Control")
 	c.Writer.Header().Del("Pragma")
@@ -115,12 +115,24 @@ func registerEmbyPublicClientRoutes(grp *gin.RouterGroup, jwtSecret string, svc

 func registerEmbyPublicImageRoutes(grp *gin.RouterGroup, svc *service.Container) {
 	// 图片公开（Infuse 缓存 URL 时会丢 token）
+	//
+	// 不带 Type 的 /Items/{Id}/Images 返回图片清单（ImageInfo 数组），与下面
+	// 带 Type 的图片字节流是不同接口，必须单独注册，否则会落到 NoRoute 并
+	// 返回 text/plain 的 404。
+	grp.GET("/Items/:id/Images", embyItemImagesHandler(svc))
+	grp.HEAD("/Items/:id/Images", embyItemImagesHandler(svc))
+	grp.GET("/items/:id/images", embyItemImagesHandler(svc))
 	grp.GET("/Items/:id/Images/:type", embyItemImageHandler(svc))
 	grp.GET("/Items/:id/Images/:type/:index", embyItemImageHandler(svc))
 	grp.HEAD("/Items/:id/Images/:type", embyItemImageHandler(svc))
 	grp.GET("/items/:id/images/:type", embyItemImageHandler(svc))
 	grp.GET("/items/:id/images/:type/:index", embyItemImageHandler(svc))
 	grp.HEAD("/items/:id/images/:type", embyItemImageHandler(svc))
+	// 用户头像。没有头像时返回带缓存头的 404，避免客户端反复重试。
+	grp.GET("/Users/:userId/Images/:type", embyUserImageHandler(svc))
+	grp.HEAD("/Users/:userId/Images/:type", embyUserImageHandler(svc))
+	grp.GET("/users/:userId/images/:type", embyUserImageHandler(svc))
+	grp.HEAD("/users/:userId/images/:type", embyUserImageHandler(svc))
 }

 func registerEmbyGetRoutes(grp *gin.RouterGroup, svc *service.Container, paths []string, factory embyRouteHandlerFactory) {
@@ -202,6 +214,12 @@ func registerEmbyAuthenticatedPlaybackRoutes(auth *gin.RouterGroup, prefix strin
 	auth.POST("/Users/:userId/Items/:id/PlaybackInfo", embyPlaybackInfoHandler(svc))

 	registerEmbyVideoStreamRoutes(auth, svc, "/Videos")
+	// Emby 官方接口：附加片段清单。MeBox 不提供附加片段，但必须返回空数组
+	// 而不是 404 —— 部分客户端（RodelPlayer）在详情页无条件请求它，404 会
+	// 让它们把条目判定为不完整。必须注册成静态段，否则会被
+	// /Videos/:id/:seg 的 HLS 兜底路由抢先匹配并返回空 404。
+	auth.GET("/Videos/:id/AdditionalParts", embyEmptyArrayHandler(svc))
+	auth.HEAD("/Videos/:id/AdditionalParts", embyEmptyArrayHandler(svc))
 	auth.GET("/Videos/:id/Subtitles/:index/Stream", embySubtitleStreamHandler(svc))
 	auth.HEAD("/Videos/:id/Subtitles/:index/Stream", embySubtitleStreamHandler(svc))
 	auth.GET("/Users/:userId/Videos/:id/Subtitles/:index/Stream", embySubtitleStreamHandler(svc))
@@ -1,7 +1,9 @@
 package handler

 import (
+	"context"
 	"encoding/json"
+	"errors"
 	"net/http"
 	"net/http/httptest"
 	"net/url"
@@ -359,6 +361,7 @@ func newPlaybackScopeTestRouter(t *testing.T) (*gin.Engine, *service.Container,
 		Auth:        auth,
 		Media:       service.NewMediaService(cfg, log, repos),
 		Stream:      service.NewStreamService(cfg, log, repos, nil),
+		Subtitle:    service.NewSubtitleService(cfg, log, repos),
 		Permissions: permissions,
 	}
 	if err := repos.User.Create(t.Context(), &model.User{
@@ -440,6 +443,38 @@ func TestPlaybackInfoForSTRMMediaIncludesHLS(t *testing.T) {
 	}
 }

+func TestSubtitleListOnlyProbesEmbeddedTracksForHLS(t *testing.T) {
+	router, svc, secret := newPlaybackScopeTestRouter(t)
+	loginToken := signedTestToken(t, secret)
+	resolveCalls := 0
+	svc.Subtitle.SetStrmPlayTargetResolver(func(context.Context, string) (*service.StrmPlayResult, error) {
+		resolveCalls++
+		return nil, errors.New("probe resolver called")
+	})
+
+	request := func(path string) *httptest.ResponseRecorder {
+		req := httptest.NewRequest(http.MethodGet, "http://nas.local"+path, nil)
+		req.Header.Set("Authorization", "Bearer "+loginToken)
+		w := httptest.NewRecorder()
+		router.ServeHTTP(w, req)
+		return w
+	}
+
+	if w := request("/api/media/media-1/subtitles"); w.Code != http.StatusOK {
+		t.Fatalf("direct subtitle status = %d body=%s", w.Code, w.Body.String())
+	}
+	if resolveCalls != 0 {
+		t.Fatalf("direct subtitle request resolved cloud media %d times, want 0", resolveCalls)
+	}
+
+	if w := request("/api/media/media-1/subtitles?include_embedded=true"); w.Code != http.StatusOK {
+		t.Fatalf("HLS subtitle status = %d body=%s", w.Code, w.Body.String())
+	}
+	if resolveCalls != 1 {
+		t.Fatalf("HLS subtitle request resolved cloud media %d times, want 1", resolveCalls)
+	}
+}
+
 func TestHLSPlaylistForRemoteEmbyMediaDisabled(t *testing.T) {
 	router, svc, secret := newPlaybackScopeTestRouter(t)
 	svc.EmbyRemote = &service.EmbyRemoteService{}
@@ -54,6 +54,7 @@ func registerAuthedMediaRoutes(authed *gin.RouterGroup, svc *service.Container)
 	authed.DELETE("/media/:id", middleware.AdminRequired(), deleteMediaHandler(svc))
 	authed.GET("/media/:id/subtitles", listSubtitlesHandler(svc))
 	authed.GET("/subtitles/:id", serveSubtitleHandler(svc))
+	authed.GET("/subtitles/:id/ass", serveASSSubtitleHandler(svc))
 	authed.POST("/media/:id/nfo", middleware.AdminRequired(), exportNFOHandler(svc))
 	authed.POST("/libraries/:id/nfo", middleware.AdminRequired(), exportLibraryNFOHandler(svc))
 }
@@ -12,6 +12,7 @@ func registerAuthedUISurfaceRoutes(authed *gin.RouterGroup, svc *service.Contain

 	authed.GET("/danmaku/:id", getDanmakuHandler(svc))
 	authed.GET("/danmaku/config", getDanmakuConfigHandler(svc))
+	authed.PUT("/danmaku/settings", updateDanmakuSettingsHandler(svc))

 	authed.GET("/watch-history", historyListHandler(svc))
 	authed.GET("/watch-history/stats", historyStatsHandler(svc))
@@ -195,7 +195,8 @@ func listLibrarySeriesEpisodesHandler(svc *service.Container) gin.HandlerFunc {
 			writeInternalOrCanceled(c, err)
 			return
 		}
-		c.JSON(http.StatusOK, gin.H{"items": items, "total": len(items)})
+		grouped := service.GroupEpisodeVersionsForDisplay(items)
+		c.JSON(http.StatusOK, gin.H{"items": grouped, "total": len(grouped)})
 	}
 }

@@ -235,6 +236,7 @@ func listMediaEpisodesHandler(svc *service.Container) gin.HandlerFunc {
 			writeInternalOrCanceled(c, err)
 			return
 		}
-		c.JSON(http.StatusOK, gin.H{"items": items, "total": len(items)})
+		grouped := service.GroupEpisodeVersionsForDisplay(items)
+		c.JSON(http.StatusOK, gin.H{"items": grouped, "total": len(grouped)})
 	}
 }
@@ -16,7 +16,13 @@ func listSubtitlesHandler(svc *service.Container) gin.HandlerFunc {
 			c.JSON(http.StatusOK, gin.H{"tracks": []service.SubtitleTrack{}})
 			return
 		}
-		tracks, err := svc.Subtitle.Discover(c.Request.Context(), id)
+		var tracks []service.SubtitleTrack
+		var err error
+		if c.Query("include_embedded") == "true" {
+			tracks, err = svc.Subtitle.Discover(c.Request.Context(), id)
+		} else {
+			tracks, err = svc.Subtitle.DiscoverExternalOnly(c.Request.Context(), id)
+		}
 		if err != nil {
 			c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
 			return
@@ -28,6 +34,22 @@ func listSubtitlesHandler(svc *service.Container) gin.HandlerFunc {
 	}
 }

+func serveASSSubtitleHandler(svc *service.Container) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		path := c.Query("path")
+		if path == "" {
+			c.JSON(http.StatusBadRequest, gin.H{"error": "missing path"})
+			return
+		}
+		c.Header("Content-Type", "text/plain; charset=utf-8")
+		c.Header("Cache-Control", "no-cache, no-store, must-revalidate")
+		if err := svc.Subtitle.ServeASS(c.Request.Context(), c.Param("id"), path, c.Writer); err != nil {
+			c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
+			return
+		}
+	}
+}
+
 func serveSubtitleHandler(svc *service.Container) gin.HandlerFunc {
 	return func(c *gin.Context) {
 		path := c.Query("path")
@@ -28,6 +28,13 @@ type User struct {
 	// PinnedLibraryIDs 存储用户置顶的媒体库 ID 列表（JSON 字符串），顺序即置顶优先级。
 	PinnedLibraryIDs  string   `gorm:"type:text" json:"-"`
 	PinnedLibraryList []string `gorm:"-" json:"pinned_library_ids,omitempty"`
+	// SubtitleChineseMode 是网页播放器外挂字幕的简繁转换偏好：
+	// original / simplified / traditional。
+	SubtitleChineseMode string `gorm:"size:16;not null;default:original" json:"subtitle_chinese_mode"`
+	// DanmakuMergeSources 是网页播放器的弹幕偏好：开启后，同一集的多个弹幕
+	// 来源会被合并并按「时间 + 内容」去重后一起展示。按用户存储，避免一个
+	// 用户的开关影响其他人。
+	DanmakuMergeSources bool `gorm:"default:false" json:"danmaku_merge_sources"`
 	// ExpiredAt is the account expiry time. Nil means the account never
 	// expires. When set and in the past, the account is treated as expired
 	// (login blocked) until an admin or a redemption code renews it.
@@ -3,6 +3,7 @@ package repository
 import (
 	"context"
 	"errors"
+	"path/filepath"
 	"strings"

 	"gorm.io/gorm"
@@ -10,6 +11,18 @@ import (
 	"github.com/truewhile/MeBox/internal/model"
 )

+// MediaUpsertItem carries a media row and optional sibling paths from an
+// earlier keep_ext naming mode. An alias is only used when the exact new path
+// does not exist in the database; in that case the existing row is migrated to
+// the new path so scraped metadata survives renames such as:
+//
+//	foo.strm -> foo.mkv.strm
+//	foo.mkv.strm -> foo.strm
+type MediaUpsertItem struct {
+	Media      *model.Media
+	AliasPaths []string
+}
+
 // Upsert inserts or updates a media row keyed by Path (unique index).
 //
 // 重要：当一条行已经存在时，scanner 重扫只应该刷新文件级元数据
@@ -22,20 +35,14 @@ import (
 //     显式写入）。这两个问题都让 EnrichLibrary(WHERE scrape_status='pending')
 //     永远捞不到数据。
 func (r *MediaRepository) Upsert(ctx context.Context, m *model.Media) error {
-	var indexIDs []string
-	err := withSQLiteBusyRetry(ctx, func() error {
-		id, uerr := r.upsertWithDB(ctx, r.db, m)
-		if uerr != nil {
-			return uerr
-		}
-		indexIDs = append(indexIDs[:0], id)
-		return nil
-	})
-	if err != nil {
-		return err
-	}
-	r.indexByIDBestEffort(ctx, indexIDs)
-	return nil
+	return r.UpsertWithAliases(ctx, m, nil)
+}
+
+// UpsertWithAliases is Upsert with explicit, filesystem-verified STRM sibling
+// aliases. It preserves the old row's ID, CreatedAt and scraped metadata while
+// moving it to the current path.
+func (r *MediaRepository) UpsertWithAliases(ctx context.Context, m *model.Media, aliasPaths []string) error {
+	return r.UpsertBatchWithAliases(ctx, []MediaUpsertItem{{Media: m, AliasPaths: aliasPaths}})
 }

 // UpsertBatch 在单个事务里逐条执行 Upsert：扫描一批只提交（fsync）一次，
@@ -46,6 +53,17 @@ func (r *MediaRepository) Upsert(ctx context.Context, m *model.Media) error {
 // 事务内会把 SQLite 写锁挂起在网络 IO 上，且批内用非事务连接回读只能
 // 拿到提交前的旧版本数据，把陈旧内容写进索引。
 func (r *MediaRepository) UpsertBatch(ctx context.Context, items []*model.Media) error {
+	mapped := make([]MediaUpsertItem, 0, len(items))
+	for _, item := range items {
+		if item != nil {
+			mapped = append(mapped, MediaUpsertItem{Media: item})
+		}
+	}
+	return r.UpsertBatchWithAliases(ctx, mapped)
+}
+
+// UpsertBatchWithAliases runs alias-aware upserts in one transaction.
+func (r *MediaRepository) UpsertBatchWithAliases(ctx context.Context, items []MediaUpsertItem) error {
 	if len(items) == 0 {
 		return nil
 	}
@@ -53,11 +71,11 @@ func (r *MediaRepository) UpsertBatch(ctx context.Context, items []*model.Media)
 	err := withSQLiteBusyRetry(ctx, func() error {
 		indexIDs = indexIDs[:0]
 		return r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
-			for _, m := range items {
-				if m == nil {
+			for _, item := range items {
+				if item.Media == nil {
 					continue
 				}
-				id, err := r.upsertWithDB(ctx, tx, m)
+				id, err := r.upsertWithDB(ctx, tx, item.Media, item.AliasPaths)
 				if err != nil {
 					return err
 				}
@@ -87,9 +105,9 @@ func (r *MediaRepository) indexByIDBestEffort(ctx context.Context, ids []string)
 	}
 }

-// upsertWithDB 落库（新建或更新），返回需要重建索引的媒体 ID（无则空串）。
-func (r *MediaRepository) upsertWithDB(ctx context.Context, db *gorm.DB, m *model.Media) (string, error) {
-	existing, created, err := r.findOrCreateMediaByPath(ctx, db, m)
+// upsertWithDB 落库（新建、更新或从旧路径迁移），返回需要重建索引的媒体 ID。
+func (r *MediaRepository) upsertWithDB(ctx context.Context, db *gorm.DB, m *model.Media, aliasPaths []string) (string, error) {
+	existing, created, adopted, err := r.findOrCreateMediaByPath(ctx, db, m, aliasPaths)
 	if err != nil {
 		return "", err
 	}
@@ -98,6 +116,12 @@ func (r *MediaRepository) upsertWithDB(ctx context.Context, db *gorm.DB, m *mode
 	}

 	updates := mediaUpsertUpdates(existing, *m)
+	if adopted {
+		updates["path"] = m.Path
+		if existing.DeletedAt.Valid {
+			updates["deleted_at"] = nil
+		}
+	}
 	if len(updates) == 0 {
 		*m = existing
 		return "", nil
@@ -107,31 +131,67 @@ func (r *MediaRepository) upsertWithDB(ctx context.Context, db *gorm.DB, m *mode
 		return "", err
 	}
 	// 回写 ID / 不可变字段，让 caller 拿到完整的现有行。
+	if adopted {
+		existing.Path = m.Path
+		existing.DeletedAt = gorm.DeletedAt{}
+	}
 	*m = existing
 	return existing.ID, nil
 }

-func (r *MediaRepository) findOrCreateMediaByPath(ctx context.Context, db *gorm.DB, m *model.Media) (model.Media, bool, error) {
+func (r *MediaRepository) findOrCreateMediaByPath(ctx context.Context, db *gorm.DB, m *model.Media, aliasPaths []string) (model.Media, bool, bool, error) {
 	var existing model.Media
 	err := db.WithContext(ctx).Unscoped().Where("path = ?", m.Path).First(&existing).Error
 	if errors.Is(err, gorm.ErrRecordNotFound) {
+		if alias, aliasErr := r.findMediaByAlias(ctx, db, m.Path, aliasPaths); aliasErr == nil {
+			return alias, false, true, nil
+		} else if !errors.Is(aliasErr, gorm.ErrRecordNotFound) {
+			return model.Media{}, false, false, aliasErr
+		}
 		// 新行：保证 scrape_status 走 GORM default:pending（即留空让数据库填）。
 		if m.ScrapeStatus == "" {
 			m.ScrapeStatus = "pending"
 		}
 		if createErr := db.WithContext(ctx).Create(m).Error; createErr == nil {
-			return *m, true, nil
+			return *m, true, false, nil
 		} else if retryErr := db.WithContext(ctx).Unscoped().Where("path = ?", m.Path).First(&existing).Error; retryErr != nil {
-			return model.Media{}, false, createErr
+			return model.Media{}, false, false, createErr
 		} else {
 			// 并发插入竞态：重查已命中既有行，直接走更新分支。
-			return existing, false, nil
+			return existing, false, false, nil
 		}
 	}
 	if err != nil {
-		return model.Media{}, false, err
+		return model.Media{}, false, false, err
 	}
-	return existing, false, nil
+	return existing, false, false, nil
+}
+
+func (r *MediaRepository) findMediaByAlias(ctx context.Context, db *gorm.DB, currentPath string, aliasPaths []string) (model.Media, error) {
+	aliases := make([]string, 0, len(aliasPaths))
+	seen := make(map[string]struct{}, len(aliasPaths))
+	for _, alias := range aliasPaths {
+		alias = filepath.Clean(strings.TrimSpace(alias))
+		if alias == "" || alias == "." || alias == filepath.Clean(currentPath) {
+			continue
+		}
+		if _, ok := seen[alias]; ok {
+			continue
+		}
+		seen[alias] = struct{}{}
+		aliases = append(aliases, alias)
+	}
+	if len(aliases) == 0 {
+		return model.Media{}, gorm.ErrRecordNotFound
+	}
+	var existing model.Media
+	err := db.WithContext(ctx).Unscoped().
+		Where("path IN ?", aliases).
+		Order("CASE WHEN scrape_status = 'matched' THEN 0 ELSE 1 END ASC, " +
+			"CASE WHEN COALESCE(poster_url, '') <> '' OR COALESCE(overview, '') <> '' THEN 0 ELSE 1 END ASC, " +
+			"CASE WHEN deleted_at IS NULL THEN 0 ELSE 1 END ASC, updated_at DESC, created_at DESC").
+		First(&existing).Error
+	return existing, err
 }

 func mediaUpsertUpdates(existing, incoming model.Media) map[string]any {
@@ -7,8 +7,17 @@ import (
 	"image/jpeg"
 	_ "image/png" // register PNG decoder
 	"strings"
+
+	"github.com/metatube-community/metatube-sdk-go/detector"
+	_ "golang.org/x/image/webp" // register WebP decoder for AVE covers
 )

+const adultPosterRatio = 2.0 / 3.0
+
+var findPrimaryFaceAxisRatio = func(img image.Image, ratio float64, advanced bool) (float64, bool) {
+	return detector.FindPrimaryFaceAxisRatio(img, ratio, advanced)
+}
+
 // IsAdultMediaPathOrMetadata reports whether media is adult based on path, mediaType, nsfw flag, or adult code.
 func IsAdultMediaPathOrMetadata(path, mediaType string, nsfw bool) bool {
 	if nsfw {
@@ -38,7 +47,8 @@ func IsAdultArtworkURL(raw string) bool {
 }

 // CropAdultCoverPoster checks if the image data is a wide full-jacket DVD cover (width > height * 1.15).
-// If so, it crops the right portion (the front cover poster) and returns the encoded JPEG bytes.
+// If so, it uses MetaTube's Pigo face detector to position a 2:3 poster crop.
+// When no face is detected, it falls back to the conventional right-side front cover.
 // If the image is already portrait or cannot be decoded, it safely returns the original data.
 func CropAdultCoverPoster(data []byte) ([]byte, string, error) {
 	if len(data) == 0 {
@@ -59,32 +69,11 @@ func CropAdultCoverPoster(data []byte) ([]byte, string, error) {
 		return data, format, nil
 	}

-	// Front cover width is typically ~0.70-0.72 of the height (or right ~50-52% of total width)
-	cropWidth := int(float64(height) * 0.71)
-	maxCropWidth := int(float64(width) * 0.53)
-	if cropWidth > maxCropWidth {
-		cropWidth = maxCropWidth
-	}
-	if cropWidth <= 0 {
-		cropWidth = width / 2
-	}
-	minX := bounds.Max.X - cropWidth
-	if minX < bounds.Min.X {
-		minX = bounds.Min.X
-	}
-
-	cropRect := image.Rect(minX, bounds.Min.Y, bounds.Max.X, bounds.Max.Y)
-	type subImager interface {
-		SubImage(r image.Rectangle) image.Image
-	}
-	var cropped image.Image
-	if si, ok := src.(subImager); ok {
-		cropped = si.SubImage(cropRect)
-	} else {
-		dst := image.NewRGBA(image.Rect(0, 0, cropRect.Dx(), cropRect.Dy()))
-		draw.Draw(dst, dst.Bounds(), src, cropRect.Min, draw.Src)
-		cropped = dst
+	position := 1.0
+	if detected, ok := findPrimaryFaceAxisRatio(src, adultPosterRatio, true); ok {
+		position = detected
 	}
+	cropped := cropImageAtPosition(src, adultPosterRatio, position)

 	var buf bytes.Buffer
 	if err := jpeg.Encode(&buf, cropped, &jpeg.Options{Quality: 92}); err != nil {
@@ -92,3 +81,29 @@ func CropAdultCoverPoster(data []byte) ([]byte, string, error) {
 	}
 	return buf.Bytes(), "image/jpeg", nil
 }
+
+func cropImageAtPosition(src image.Image, ratio, position float64) image.Image {
+	bounds := src.Bounds()
+	width := bounds.Dx()
+	height := bounds.Dy()
+	cropWidth, cropHeight := width, height
+	x, y := 0, 0
+	if candidate := int(float64(height) * ratio); candidate < width {
+		cropWidth = candidate
+		x = max(min(int(float64(width)*position)-cropWidth/2, width-cropWidth), 0)
+	} else if candidate := int(float64(width) / ratio); candidate < height {
+		cropHeight = candidate
+		y = max(min(int(float64(height)*position)-cropHeight/2, height-cropHeight), 0)
+	}
+	cropRect := image.Rect(0, 0, cropWidth, cropHeight).
+		Add(image.Pt(x, y)).
+		Add(bounds.Min)
+	if sub, ok := src.(interface {
+		SubImage(image.Rectangle) image.Image
+	}); ok {
+		return sub.SubImage(cropRect)
+	}
+	dst := image.NewRGBA(image.Rect(0, 0, cropRect.Dx(), cropRect.Dy()))
+	draw.Draw(dst, dst.Bounds(), src, cropRect.Min, draw.Src)
+	return dst
+}
@@ -2,6 +2,7 @@ package service

 import (
 	"bytes"
+	"encoding/base64"
 	"image"
 	"image/color"
 	"image/draw"
@@ -44,10 +45,10 @@ func TestCropAdultCoverPosterWideLandscape(t *testing.T) {
 	if croppedWidth <= 0 || croppedWidth >= 800 {
 		t.Fatalf("unexpected cropped width: %d", croppedWidth)
 	}
-	// Verify aspect ratio is roughly standard portrait (~0.68 - 0.73)
+	// MetaTube's default primary-image ratio is 2:3.
 	ratio := float64(croppedWidth) / float64(croppedHeight)
-	if ratio < 0.65 || ratio > 0.75 {
-		t.Fatalf("expected portrait ratio ~0.71, got %f (%dx%d)", ratio, croppedWidth, croppedHeight)
+	if ratio < 0.65 || ratio > 0.68 {
+		t.Fatalf("expected portrait ratio ~0.667, got %f (%dx%d)", ratio, croppedWidth, croppedHeight)
 	}

 	// Verify the cropped image contains the right side color (blue), not the left side color (red)
@@ -58,6 +59,51 @@ func TestCropAdultCoverPosterWideLandscape(t *testing.T) {
 	}
 }

+func TestCropAdultCoverPosterDecodesWebP(t *testing.T) {
+	wideWebP, err := base64.StdEncoding.DecodeString("UklGRjwAAABXRUJQVlA4IDAAAADQAQCdASoJAAYAAUAmJaACdLoB+AADsAD+8ut//NgVzXPv9//S4P0uD9Lg/9KQAAA=")
+	if err != nil {
+		t.Fatal(err)
+	}
+	croppedBytes, ctype, err := CropAdultCoverPoster(wideWebP)
+	if err != nil {
+		t.Fatalf("crop WebP: %v", err)
+	}
+	if ctype != "image/jpeg" {
+		t.Fatalf("cropped WebP type = %q, want image/jpeg", ctype)
+	}
+	cropped, _, err := image.Decode(bytes.NewReader(croppedBytes))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got := float64(cropped.Bounds().Dx()) / float64(cropped.Bounds().Dy()); got < 0.65 || got > 0.68 {
+		t.Fatalf("cropped WebP ratio = %.3f, want 2:3", got)
+	}
+}
+
+func TestCropAdultCoverPosterCentersDetectedFace(t *testing.T) {
+	originalDetector := findPrimaryFaceAxisRatio
+	findPrimaryFaceAxisRatio = func(image.Image, float64, bool) (float64, bool) {
+		return 0.25, true
+	}
+	defer func() {
+		findPrimaryFaceAxisRatio = originalDetector
+	}()
+
+	origBytes := createTestImage(900, 600, color.RGBA{R: 255, A: 255}, color.RGBA{B: 255, A: 255})
+	croppedBytes, _, err := CropAdultCoverPoster(origBytes)
+	if err != nil {
+		t.Fatal(err)
+	}
+	croppedImg, _, err := image.Decode(bytes.NewReader(croppedBytes))
+	if err != nil {
+		t.Fatal(err)
+	}
+	r, _, b, _ := croppedImg.At(croppedImg.Bounds().Dx()/2, croppedImg.Bounds().Dy()/2).RGBA()
+	if r <= b {
+		t.Fatalf("face-positioned crop did not follow detected left-side axis: r=%d b=%d", r, b)
+	}
+}
+
 func TestCropAdultCoverPosterKeepsPortrait(t *testing.T) {
 	// Create an already vertical portrait image (500x700)
 	origBytes := createTestImage(500, 700, color.RGBA{R: 255, A: 255}, color.RGBA{B: 255, A: 255})
@@ -9,6 +9,7 @@ import (
 	"net/url"
 	"regexp"
 	"strings"
+	"sync"
 	"time"

 	"go.uber.org/zap"
@@ -180,6 +181,7 @@ func (p *AdultProvider) SearchCandidates(ctx context.Context, query string) ([]*
 			if err != nil {
 				return nil, err
 			}
+			matches = p.enrichMetaTubeCandidates(ctx, mtCfg, code, matches)
 			for _, m := range matches {
 				m.OriginalName = code
 				m.Title = FormatAdultTitle(code, m.Title)
@@ -194,6 +196,7 @@ func (p *AdultProvider) SearchCandidates(ctx context.Context, query string) ([]*
 		if mtCfg.ServerURL != "" {
 			matches, err := p.metatube.Search(ctx, mtCfg, code)
 			if err == nil && len(matches) > 0 {
+				matches = p.enrichMetaTubeCandidates(ctx, mtCfg, code, matches)
 				for _, m := range matches {
 					m.OriginalName = code
 					m.Title = FormatAdultTitle(code, m.Title)
@@ -217,6 +220,50 @@ func (p *AdultProvider) SearchCandidates(ctx context.Context, query string) ([]*
 	}
 }

+// GetMetaTubeCandidate fetches the selected provider result instead of
+// re-running a search that may choose a different provider.
+func (p *AdultProvider) GetMetaTubeCandidate(ctx context.Context, provider, id string) (*Match, error) {
+	if p == nil || p.metatube == nil {
+		return nil, nil
+	}
+	provider = strings.TrimSpace(provider)
+	id = strings.TrimSpace(id)
+	if provider == "" || id == "" {
+		return nil, nil
+	}
+	engine := strings.ToLower(p.getSetting(ctx, "adult.scraper.engine", "builtin"))
+	if engine != "metatube" && engine != "auto" {
+		return nil, nil
+	}
+	cfg := p.ResolveMetaTubeConfig(ctx)
+	if cfg.ServerURL == "" {
+		return nil, nil
+	}
+	return p.metatube.GetMovie(ctx, cfg, provider, id)
+}
+
+func (p *AdultProvider) enrichMetaTubeCandidates(ctx context.Context, cfg MetaTubeConfig, code string, matches []*Match) []*Match {
+	var wg sync.WaitGroup
+	for i, candidate := range matches {
+		if candidate == nil ||
+			normalizeAdultCode(candidate.OriginalName) != code ||
+			strings.TrimSpace(candidate.DoubanID) == "" ||
+			strings.TrimSpace(candidate.TheTVDBID) == "" {
+			continue
+		}
+		wg.Add(1)
+		go func(index int, current *Match) {
+			defer wg.Done()
+			detailed, err := p.metatube.GetMovie(ctx, cfg, current.TheTVDBID, current.DoubanID)
+			if err == nil && detailed != nil {
+				matches[index] = detailed
+			}
+		}(i, candidate)
+	}
+	wg.Wait()
+	return matches
+}
+
 func (p *AdultProvider) searchBuiltin(ctx context.Context, code string) (*Match, error) {
 	bases := p.resolveBases(ctx)
 	if len(bases) == 0 {
@@ -243,12 +290,46 @@ func (p *AdultProvider) searchBuiltin(ctx context.Context, code string) (*Match,
 			match.OriginalName = code
 			match.Title = FormatAdultTitle(code, match.Title)
 			match.NSFW = true
+			p.applyMetaTubeFaceAwareArtwork(ctx, code, match)
 			return match, nil
 		}
 	}
 	return nil, lastErr
 }

+func (p *AdultProvider) applyMetaTubeFaceAwareArtwork(ctx context.Context, code string, match *Match) {
+	if p == nil || p.metatube == nil || match == nil || strings.TrimSpace(match.PosterURL) == "" {
+		return
+	}
+	// In explicit built-in mode MetaTube remains useful as an image processor:
+	// its primary endpoint performs the same automatic face-aware crop used by
+	// the official Jellyfin plugin. Auto mode already tried MetaTube metadata,
+	// so avoid repeating the same failed request during fallback.
+	if strings.ToLower(p.getSetting(ctx, "adult.scraper.engine", "builtin")) != "builtin" {
+		return
+	}
+	cfg := p.ResolveMetaTubeConfig(ctx)
+	if cfg.ServerURL == "" || !cfg.CropCover {
+		return
+	}
+	candidates, err := p.metatube.Search(ctx, cfg, code)
+	if err != nil {
+		return
+	}
+	for _, candidate := range candidates {
+		if candidate == nil || normalizeAdultCode(candidate.OriginalName) != code {
+			continue
+		}
+		if candidate.PosterURL != "" {
+			match.PosterURL = candidate.PosterURL
+		}
+		if candidate.BackdropURL != "" {
+			match.BackdropURL = candidate.BackdropURL
+		}
+		return
+	}
+}
+
 func (p *AdultProvider) resolveBases(ctx context.Context) []string {
 	customJavDB := p.getSetting(ctx, "adult.scraper.builtin_javdb_url", "")
 	customJavBus := p.getSetting(ctx, "adult.scraper.builtin_javbus_url", "")
@@ -23,6 +23,7 @@ func parseAdultDetailHTML(body, code, source, detailURL string) *Match {
 	}

 	match := &Match{
+		Provider:     strings.ToLower(strings.TrimSpace(source)),
 		OriginalName: code,
 		MediaType:    "adult",
 		NSFW:         true,
@@ -25,7 +25,8 @@ func TestAdultProviderRouting(t *testing.T) {
 	repos := repository.New(db)

 	mtServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		if r.URL.Path == "/v1/movies/search" {
+		switch r.URL.Path {
+		case "/v1/movies/search":
 			q := r.URL.Query().Get("q")
 			if q == "SSIS-001" {
 				results := struct {
@@ -46,6 +47,21 @@ func TestAdultProviderRouting(t *testing.T) {
 				_ = json.NewEncoder(w).Encode(results)
 				return
 			}
+		case "/v1/movies/javdb/999":
+			_ = json.NewEncoder(w).Encode(struct {
+				Data MetaTubeMovieInfo `json:"data"`
+			}{
+				Data: MetaTubeMovieInfo{
+					ID:            "999",
+					Number:        "SSIS-001",
+					Title:         "河北彩花 専属デビュー",
+					Provider:      "javdb",
+					CoverURL:      "https://example.com/poster.jpg",
+					PreviewImages: []string{"https://example.com/backdrop.jpg"},
+					ReleaseDate:   "2021-06-19",
+				},
+			})
+			return
 		}
 		http.NotFound(w, r)
 	}))
@@ -80,6 +96,11 @@ func TestAdultProviderRouting(t *testing.T) {
 	if len(candidates) != 1 {
 		t.Fatalf("expected 1 candidate, got %d", len(candidates))
 	}
+	wantPoster := mtServer.URL + "/v1/images/primary/javdb/999?auto=true&pos=1&quality=90&ratio=-1&url=https%3A%2F%2Fexample.com%2Fposter.jpg"
+	wantBackdrop := mtServer.URL + "/v1/images/backdrop/javdb/999?quality=90"
+	if candidates[0].PosterURL != wantPoster || candidates[0].BackdropURL != wantBackdrop {
+		t.Fatalf("candidate artwork was not enriched: %#v", candidates[0])
+	}

 	// 2. Test auto mode with failing metatube query
 	_ = repos.Setting.Set(context.Background(), "adult.scraper.engine", "auto")
@@ -89,3 +110,68 @@ func TestAdultProviderRouting(t *testing.T) {
 		t.Errorf("expected nil for nonexistent in auto mode when sources unavailable")
 	}
 }
+
+func TestBuiltinAdultScrapeUsesMetaTubeFaceAwareArtwork(t *testing.T) {
+	builtinServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/search":
+			_, _ = w.Write([]byte(`<a class="box" href="/v/local"><strong>SSIS-001 本地候选</strong></a>`))
+		case "/v/local":
+			_, _ = w.Write([]byte(`<h2>SSIS-001 本地标题</h2><img class="video-cover" src="/wide-cover.jpg">`))
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer builtinServer.Close()
+
+	metaTubeServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != "/v1/movies/search" || r.URL.Query().Get("q") != "SSIS-001" {
+			http.NotFound(w, r)
+			return
+		}
+		_ = json.NewEncoder(w).Encode(struct {
+			Data []MetaTubeSearchResult `json:"data"`
+		}{
+			Data: []MetaTubeSearchResult{{
+				ID:       "999",
+				Number:   "SSIS-001",
+				Title:    "MetaTube candidate",
+				Provider: "AVE",
+				CoverURL: "https://example.com/wide-cover.jpg",
+			}},
+		})
+	}))
+	defer metaTubeServer.Close()
+
+	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := db.AutoMigrate(&model.Setting{}, &model.APIConfig{}); err != nil {
+		t.Fatal(err)
+	}
+	repos := repository.New(db)
+	for key, value := range map[string]string{
+		"adult.scraper.engine":            "builtin",
+		"adult.scraper.builtin_javdb_url": builtinServer.URL,
+		"adult.scraper.metatube_server":   metaTubeServer.URL,
+		"adult.scraper.crop_cover":        "true",
+	} {
+		if err := repos.Setting.Set(t.Context(), key, value); err != nil {
+			t.Fatal(err)
+		}
+	}
+
+	provider := NewAdultProvider(zap.NewNop(), nil, repos)
+	match, err := provider.Search(t.Context(), "SSIS-001")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if match == nil {
+		t.Fatal("expected built-in match")
+	}
+	wantPoster := metaTubeServer.URL + "/v1/images/primary/AVE/999?auto=true&pos=1&quality=90&ratio=-1&url=https%3A%2F%2Fexample.com%2Fwide-cover.jpg"
+	if match.PosterURL != wantPoster {
+		t.Fatalf("built-in poster = %q, want face-aware URL %q", match.PosterURL, wantPoster)
+	}
+}
@@ -150,6 +150,7 @@ func (c *OpenClient) doJSON(ctx context.Context, method, rawURL string, form map
 		if err != nil {
 			return nil, err
 		}
+		attemptedAccess := strings.TrimPrefix(req.Header.Get("Authorization"), "Bearer ")

 		resp, err := c.HTTP.Do(req)
 		if err != nil {
@@ -218,7 +219,7 @@ func (c *OpenClient) doJSON(ctx context.Context, method, rawURL string, form map
 		// refresh_token 刷新后重试一次。刷新失败或重试后仍失败才返回，
 		// 避免长时间同步因 token 过期而整体失败。
 		if isTokenCode(base.Code) {
-			if access && c.tryRefreshTokenLocked(ctx) {
+			if access && c.tryRefreshTokenLocked(ctx, attemptedAccess) {
 				continue
 			}
 			if access {
@@ -305,21 +306,23 @@ func (c *OpenClient) doAuthJSONWithUA(ctx context.Context, method, rawURL string
 // tryRefreshTokenLocked 并发安全地刷新 access_token；成功返回 true（调用方
 // 应使用内存中的新 token 重试原请求）。
 //
-// 拿到写锁后在锁内读取 oldAccess，与持锁期间的当前值对比：若已被其他
-// goroutine 刷新过则直接复用新 token，避免并发请求连环轮转消耗 115 的
-// 一次性 refresh_token。全程持写锁读写 token 字段，无 TOCTOU 窗口。
+// failedAccess 是失败请求实际携带的 token。拿到写锁后与当前 token 对比：
+// 若已被其他 goroutine 刷新过则直接复用，避免并发请求连环轮转消耗 115
+// 的一次性 refresh_token。全程持写锁读写 token 字段，无 TOCTOU 窗口。
 //
 // 对"refresh_token 本身已失效/被吊销"（IsRefreshTokenDead，如 40140114/116/119/120）
 // 这类不可恢复的错误直接放弃并清空内存 token（提示需重新授权）。
 // 对其它失败（网络瞬时抖动、刷新接口可重试错误码等）做指数退避重试几次再放弃，
 // 避免同步长任务中途 token 到期时恰好撞上一个短暂的刷新失败就整体失败。
-func (c *OpenClient) tryRefreshTokenLocked(ctx context.Context) bool {
+func (c *OpenClient) tryRefreshTokenLocked(ctx context.Context, failedAccess string) bool {
 	c.tokenMu.Lock()
-	// 在已持有写锁内读取当前 token 作为"刷新前快照"，消除双重加锁窗口：
-	// 若在拿锁期间已有其他 goroutine 完成刷新，refreshTokenWhileLocked
-	// 内的 c.AccessToken != oldAccess 判断会立即命中并返回复用。
-	oldAccess := c.AccessToken
-	newToken, ok := c.refreshTokenWhileLocked(ctx, oldAccess)
+	// 请求发出后若其他 goroutine 已经刷新完成，直接复用新 token 重试；
+	// 不能再次轮换一次性的 refresh_token。
+	if failedAccess != "" && c.AccessToken != failedAccess {
+		c.tokenMu.Unlock()
+		return true
+	}
+	newToken, ok := c.refreshTokenWhileLocked(ctx, failedAccess)
 	c.tokenMu.Unlock()
 	// 回调必须在 tokenMu 释放后调用，避免上层在回调内访问客户端时死锁
 	if ok && newToken != nil && c.OnTokenRefreshed != nil {
@@ -140,6 +140,47 @@ func TestRefreshTokenDead(t *testing.T) {
 	}
 }

+func TestConcurrentTokenFailuresShareOneRefresh(t *testing.T) {
+	var mu sync.Mutex
+	refreshCalls := 0
+	mockAPI(t, func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != "/open/refreshToken" {
+			t.Errorf("unexpected path %s", r.URL.Path)
+		}
+		mu.Lock()
+		refreshCalls++
+		mu.Unlock()
+		time.Sleep(50 * time.Millisecond)
+		_, _ = w.Write([]byte(`{"state":true,"data":{"access_token":"at-new","refresh_token":"rt-new","expires_in":7200}}`))
+	})
+
+	client := NewOpenClient("100195129", "at-old", "rt-old")
+	var wg sync.WaitGroup
+	results := make(chan bool, 2)
+	for range 2 {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			results <- client.tryRefreshTokenLocked(context.Background(), "at-old")
+		}()
+	}
+	wg.Wait()
+	close(results)
+	for ok := range results {
+		if !ok {
+			t.Fatal("concurrent refresh should reuse the refreshed token")
+		}
+	}
+	mu.Lock()
+	defer mu.Unlock()
+	if refreshCalls != 1 {
+		t.Fatalf("refresh calls = %d, want 1", refreshCalls)
+	}
+	if client.CurrentAccessToken() != "at-new" {
+		t.Fatalf("access token = %q, want at-new", client.CurrentAccessToken())
+	}
+}
+
 func TestFsListAndDownload(t *testing.T) {
 	mockAPI(t, func(w http.ResponseWriter, r *http.Request) {
 		switch r.URL.Path {
@@ -477,24 +477,32 @@ func (c *OpenClient) GetToken(qrCode *QrCodeDataReturn) (*TokenData, error) {

 // RefreshToken 刷新访问令牌。
 func (c *OpenClient) RefreshToken(refreshToken string) (*TokenData, error) {
+	c.tokenMu.Lock()
 	if refreshToken == "" {
-		refreshToken = c.currentRefreshToken()
+		refreshToken = c.RefreshTokenStr
 	}
 	if refreshToken == "" {
+		c.tokenMu.Unlock()
 		return nil, fmt.Errorf("没有可用的 refresh_token")
 	}
 	token, err := c.doRefreshToken(refreshToken)
 	if err != nil {
 		// refresh_token 已失效时清空内存令牌（提示需重新授权）
 		if IsRefreshTokenDead(err) {
-			c.SetAuthToken("", "")
+			c.setAuthTokenLocked("", "")
 		}
+		c.tokenMu.Unlock()
 		return nil, err
 	}
 	if token.AccessToken == "" || token.RefreshToken == "" {
+		c.tokenMu.Unlock()
 		return nil, fmt.Errorf("115: 刷新返回空凭证（access_token/refresh_token 缺失）")
 	}
-	c.SetAuthToken(token.AccessToken, token.RefreshToken)
+	c.setAuthTokenLocked(token.AccessToken, token.RefreshToken)
+	c.tokenMu.Unlock()
+	if c.OnTokenRefreshed != nil {
+		c.OnTokenRefreshed(token.AccessToken, token.RefreshToken)
+	}
 	return token, nil
 }

@@ -0,0 +1,140 @@
+package service
+
+import (
+	"testing"
+)
+
+func TestDanmakuEpisodeNumber(t *testing.T) {
+	cases := []struct {
+		in   string
+		want string
+	}{
+		{"第1话 裏切りの大空", "1"},
+		{"第18话 自己相似的两性同体-Fractal Androgynous-", "18"},
+		{"第11话", "11"},
+		{"【dandan&animeko】 第29集 那我们走吧", "29"},
+		{"第 202 集", "202"},
+		{"第1.5话 特别篇", "1.5"},
+		{"正片", ""},
+		{"", ""},
+	}
+	for _, tc := range cases {
+		if got := danmakuEpisodeNumber(tc.in); got != tc.want {
+			t.Errorf("danmakuEpisodeNumber(%q) = %q, want %q", tc.in, got, tc.want)
+		}
+	}
+}
+
+func TestDanmakuEpisodeSubtitle(t *testing.T) {
+	cases := []struct {
+		in   string
+		want string
+	}{
+		{"第1话 裏切りの大空", "裏切りの大空"},
+		{"第18话 自己相似的两性同体-Fractal Androgynous-", "自己相似的两性同体-Fractal Androgynous-"},
+		{"第11话", ""},
+		{"【dandan&animeko】 第29集 那我们走吧", "那我们走吧"},
+		{"正片", ""},
+	}
+	for _, tc := range cases {
+		if got := danmakuEpisodeSubtitle(tc.in); got != tc.want {
+			t.Errorf("danmakuEpisodeSubtitle(%q) = %q, want %q", tc.in, got, tc.want)
+		}
+	}
+}
+
+// 刮削信息匹配：优先使用本地已刮削的年份、集数和集标题，不能再被同名续作
+// 或缺少集标题的平台源抢走。
+func TestMatchScrapedDanmakuEpisodesUsesYearAndEpisodeTitle(t *testing.T) {
+	candidates := []DanmakuAnime{
+		{AnimeID: 1, AnimeTitle: "命运石之门 0(2018)【TV动画】from dandan&animeko", Episodes: []DanmakuEpisode{
+			{EpisodeID: 10299, EpisodeTitle: "【dandan&animeko】 第1话 零化域的缺失之环-Absolute Zero-"},
+		}},
+		{AnimeID: 2, AnimeTitle: "命运石之门(2011)【TV动画】from dandan&animeko", Episodes: []DanmakuEpisode{
+			{EpisodeID: 10322, EpisodeTitle: "【dandan&animeko】 第1话 始与终的序章-Turning Point-"},
+		}},
+		{AnimeID: 3, AnimeTitle: "命运石之门(2011)【动漫】from 360", Episodes: []DanmakuEpisode{
+			{EpisodeID: 10218, EpisodeTitle: "【qq】 第1集"},
+		}},
+	}
+
+	got := matchScrapedDanmakuEpisodes(candidates, "命运石之门", 2011, "1", "起始与终结的序章")
+	if len(got) != 1 {
+		t.Fatalf("matched %d anime, want 1: %#v", len(got), got)
+	}
+	if got[0].AnimeID != 2 || len(got[0].Episodes) != 1 || got[0].Episodes[0].EpisodeID != 10322 {
+		t.Fatalf("picked wrong source: %#v", got)
+	}
+}
+
+// 真实数据形态：官方 match 给出的剧名+集数在配置源里会命中多季/多版本，
+// 且顺序不可靠。必须靠副标题选中正确的那一集。
+func TestPickDanmakuEpisodeIDDisambiguatesBySubtitle(t *testing.T) {
+	// 实测样本：官方 match「命运石之门 第18话 自己相似的两性同体-…」，
+	// 配置源首条却是《命运石之门 0》的同一集号。
+	candidates := []DanmakuAnime{
+		{AnimeID: 1, AnimeTitle: "命运石之门 0(2018)", Episodes: []DanmakuEpisode{
+			{EpisodeID: 11072, EpisodeTitle: "【dandan&animeko】 第18话 并进对称的牵牛星-Translational"},
+		}},
+		{AnimeID: 2, AnimeTitle: "命运石之门(2011)", Episodes: []DanmakuEpisode{
+			{EpisodeID: 11095, EpisodeTitle: "【dandan&animeko】 第18话 自己相似的两性同体-Fractal Androgynous-"},
+		}},
+	}
+	got, ok := pickDanmakuEpisodeID(candidates, "18", "第18话 自己相似的两性同体-Fractal Androgynous-")
+	if !ok {
+		t.Fatal("expected a confident match")
+	}
+	if got != 11095 {
+		t.Fatalf("picked episodeId %d, want 11095 (first candidate is a different season)", got)
+	}
+}
+
+// 目标带副标题但没有任何候选的副标题对得上时，必须放弃而不是退回第一条，
+// 否则会给用户播放另一部番的弹幕。
+func TestPickDanmakuEpisodeIDRejectsWhenSubtitleNotFound(t *testing.T) {
+	candidates := []DanmakuAnime{
+		{AnimeID: 1, AnimeTitle: "某番 第一季", Episodes: []DanmakuEpisode{
+			{EpisodeID: 111, EpisodeTitle: "第3话 完全不同的标题"},
+		}},
+	}
+	if got, ok := pickDanmakuEpisodeID(candidates, "3", "第3话 期望的标题"); ok {
+		t.Fatalf("expected no match, got episodeId %d", got)
+	}
+}
+
+// 目标没有副标题（如「第11话」）时，退而要求集数一致；集数对不上同样放弃。
+func TestPickDanmakuEpisodeIDNumberOnlyFallback(t *testing.T) {
+	candidates := []DanmakuAnime{
+		{AnimeID: 1, AnimeTitle: "86 第二季", Episodes: []DanmakuEpisode{
+			// 该源对第二季采用绝对集号，第 11 集记作第 22 话。
+			{EpisodeID: 11113, EpisodeTitle: "第22话 辛"},
+		}},
+	}
+	if got, ok := pickDanmakuEpisodeID(candidates, "11", "第11话"); ok {
+		t.Fatalf("episode number mismatch must be rejected, got episodeId %d", got)
+	}
+
+	same := []DanmakuAnime{
+		{AnimeID: 1, AnimeTitle: "某番", Episodes: []DanmakuEpisode{
+			{EpisodeID: 222, EpisodeTitle: "第11话"},
+		}},
+	}
+	got, ok := pickDanmakuEpisodeID(same, "11", "第11话")
+	if !ok || got != 222 {
+		t.Fatalf("pickDanmakuEpisodeID = (%d,%v), want (222,true)", got, ok)
+	}
+}
+
+func TestPickDanmakuEpisodeIDSkipsInvalidIDs(t *testing.T) {
+	candidates := []DanmakuAnime{
+		{AnimeID: 1, AnimeTitle: "某番", Episodes: []DanmakuEpisode{
+			{EpisodeID: 0, EpisodeTitle: "第1话 目标"},
+			{EpisodeID: -5, EpisodeTitle: "第1话 目标"},
+			{EpisodeID: 333, EpisodeTitle: "第1话 目标"},
+		}},
+	}
+	got, ok := pickDanmakuEpisodeID(candidates, "1", "第1话 目标")
+	if !ok || got != 333 {
+		t.Fatalf("pickDanmakuEpisodeID = (%d,%v), want (333,true)", got, ok)
+	}
+}
@@ -105,27 +105,359 @@ func TestDanmakuFetchHashMatchLayer(t *testing.T) {
 	require.Contains(t, seen, `"matchMode":"hashAndFileName"`)
 }

-// 第 1 层拉弹幕：配置了自定义源时优先自定义源，失败才回退官方。
-func TestDanmakuFetchHashMatchUsesConfiguredSourceFirst(t *testing.T) {
+// 第 1 层拉弹幕：官方 match 给出的 episodeId 属于官方 ID 空间，不能直接拿去
+// 请求第三方源（真实源上只会 404）。必须用官方给到的剧名+集数在配置源里重定位
+// 到配置源自己的 episodeId，再用它拉弹幕。
+func TestDanmakuFetchHashMatchRemapsEpisodeIDToConfiguredSource(t *testing.T) {
 	videoPath, _ := writeDanmakuTestVideo(t, "测试动画.第01话.mkv")

-	cfgSrv := newDanmakuSourceServer(t) // /api/v2/comment/25484 → 弹幕A
-	official := danmakuOfficialServer(t,
-		`{"success":true,"isMatched":true,"matches":[{"episodeId":25484,"animeId":1001,"animeTitle":"测试动画"}]}`,
-		`<?xml version="1.0"?><i><d p="0.5,1,16777215,user1">弹幕B官方</d></i>`,
-		nil)
+	// 配置源使用自己的 ID 空间：官方是 90001，配置源是 25484。
+	// 副标题一致，用于跨源确认是同一集。
+	const subtitle = "测试副标题"
+	cfgMux := http.NewServeMux()
+	cfgMux.HandleFunc("/api/v2/search/episodes", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"hasMore":false,"animes":[{"animeId":1001,"animeTitle":"测试动画","episodes":[{"episodeId":25484,"episodeTitle":"第1话 `+subtitle+`"}]}]}`)
+	})
+	cfgMux.HandleFunc("/api/v2/comment/25484", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/xml")
+		fmt.Fprint(w, `<?xml version="1.0"?><i><d p="0.5,1,16777215,user1">弹幕A</d></i>`)
+	})
+	cfgSrv := httptest.NewServer(cfgMux)
+	t.Cleanup(cfgSrv.Close)
+
+	officialMux := http.NewServeMux()
+	officialMux.HandleFunc("/api/v2/match", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"success":true,"isMatched":true,"matches":[{"episodeId":90001,"animeId":1001,"animeTitle":"测试动画","episodeTitle":"第1话 `+subtitle+`"}]}`)
+	})
+	officialMux.HandleFunc("/api/v2/comment/90001", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/xml")
+		fmt.Fprint(w, `<?xml version="1.0"?><i><d p="0.5,1,16777215,user1">弹幕B官方</d></i>`)
+	})
+	official := httptest.NewServer(officialMux)
+	t.Cleanup(official.Close)
 	overrideDanmakuOfficialBase(t, official.URL)

 	svc := newDanmakuTestService(t)
 	ctx := context.Background()
-	require.NoError(t, svc.repo.Setting.Set(ctx, DanmakuSourceKey, cfgSrv.URL()))
+	require.NoError(t, svc.repo.Setting.Set(ctx, DanmakuSourceKey, cfgSrv.URL))
 	seedDanmakuVideoMedia(t, svc, "mC", "测试动画", videoPath, 32000, 0)

 	res, err := svc.Fetch(ctx, "mC", "", "")
 	require.NoError(t, err)
-	// 配置源优先：弹幕来自自定义源而非官方。
+	// 弹幕取自配置源，且用的是重定位后的 ID。
 	require.Contains(t, res.Raw, "弹幕A")
 	require.NotContains(t, res.Raw, "弹幕B官方")
+	require.Equal(t, int64(25484), res.EpisodeID)
+	require.Equal(t, "hash", res.MatchMode)
+}
+
+// 配置源能定位到该集，但返回的是空弹幕库（count=0）时必须回官方兜底：
+// 第三方目录里有条目不代表真的收录了弹幕。
+func TestDanmakuFetchHashMatchFallsBackWhenConfiguredLibraryIsEmpty(t *testing.T) {
+	videoPath, _ := writeDanmakuTestVideo(t, "测试动画.第01话.mkv")
+
+	const subtitle = "测试副标题"
+	cfgMux := http.NewServeMux()
+	cfgMux.HandleFunc("/api/v2/search/episodes", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"hasMore":false,"animes":[{"animeId":1001,"animeTitle":"测试动画","episodes":[{"episodeId":25484,"episodeTitle":"第1话 `+subtitle+`"}]}]}`)
+	})
+	// 该集在配置源上存在，但弹幕为空。
+	cfgMux.HandleFunc("/api/v2/comment/25484", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"count":0,"comments":[]}`)
+	})
+	cfgSrv := httptest.NewServer(cfgMux)
+	t.Cleanup(cfgSrv.Close)
+
+	officialMux := http.NewServeMux()
+	officialMux.HandleFunc("/api/v2/match", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"success":true,"isMatched":true,"matches":[{"episodeId":90001,"animeId":1001,"animeTitle":"测试动画","episodeTitle":"第1话 `+subtitle+`"}]}`)
+	})
+	officialMux.HandleFunc("/api/v2/comment/90001", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/xml")
+		fmt.Fprint(w, `<?xml version="1.0"?><i><d p="0.5,1,16777215,user1">官方兜底弹幕</d></i>`)
+	})
+	official := httptest.NewServer(officialMux)
+	t.Cleanup(official.Close)
+	overrideDanmakuOfficialBase(t, official.URL)
+
+	svc := newDanmakuTestService(t)
+	ctx := context.Background()
+	require.NoError(t, svc.repo.Setting.Set(ctx, DanmakuSourceKey, cfgSrv.URL))
+	seedDanmakuVideoMedia(t, svc, "mEmpty", "测试动画", videoPath, 32000, 0)
+
+	res, err := svc.Fetch(ctx, "mEmpty", "", "")
+	require.NoError(t, err)
+	require.Contains(t, res.Raw, "官方兜底弹幕")
+	require.Equal(t, int64(90001), res.EpisodeID)
+}
+
+// 同一集在配置源里命中多个来源时：自动加载第一条，其余作为可切换来源返回，
+// 让用户能在面板里直接切换，而不必重新搜索。
+func TestDanmakuFetchHashMatchReturnsAlternatives(t *testing.T) {
+	videoPath, _ := writeDanmakuTestVideo(t, "多来源动画.第01话.mkv")
+
+	const subtitle = "同一个副标题"
+	cfgMux := http.NewServeMux()
+	cfgMux.HandleFunc("/api/v2/search/episodes", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		// 三个来源都指向同一集（副标题与集数一致），模拟 LogVar 聚合多站。
+		fmt.Fprint(w, `{"hasMore":false,"animes":[`+
+			`{"animeId":1,"animeTitle":"多来源动画 from dandan","episodes":[{"episodeId":101,"episodeTitle":"第1话 `+subtitle+`"}]},`+
+			`{"animeId":2,"animeTitle":"多来源动画 from bilibili","episodes":[{"episodeId":102,"episodeTitle":"第1话 `+subtitle+`"}]},`+
+			`{"animeId":3,"animeTitle":"多来源动画 from qq","episodes":[{"episodeId":103,"episodeTitle":"第1话 `+subtitle+`"}]}]}`)
+	})
+	cfgMux.HandleFunc("/api/v2/comment/101", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/xml")
+		fmt.Fprint(w, `<?xml version="1.0"?><i><d p="0.5,1,16777215,user1">首选来源弹幕</d></i>`)
+	})
+	cfgSrv := httptest.NewServer(cfgMux)
+	t.Cleanup(cfgSrv.Close)
+
+	officialMux := http.NewServeMux()
+	officialMux.HandleFunc("/api/v2/match", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"success":true,"isMatched":true,"matches":[{"episodeId":90001,"animeId":9,"animeTitle":"多来源动画","episodeTitle":"第1话 `+subtitle+`"}]}`)
+	})
+	officialMux.HandleFunc("/api/v2/comment/90001", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/xml")
+		fmt.Fprint(w, `<?xml version="1.0"?><i><d p="0.5,1,16777215,user1">官方弹幕</d></i>`)
+	})
+	official := httptest.NewServer(officialMux)
+	t.Cleanup(official.Close)
+	overrideDanmakuOfficialBase(t, official.URL)
+
+	svc := newDanmakuTestService(t)
+	ctx := context.Background()
+	require.NoError(t, svc.repo.Setting.Set(ctx, DanmakuSourceKey, cfgSrv.URL))
+	seedDanmakuVideoMedia(t, svc, "mAlt", "多来源动画", videoPath, 32000, 0)
+
+	res, err := svc.Fetch(ctx, "mAlt", "", "")
+	require.NoError(t, err)
+
+	// 自动加载第一个来源（沿用既有取值逻辑）。
+	require.Contains(t, res.Raw, "首选来源弹幕")
+	require.Equal(t, int64(101), res.EpisodeID)
+	require.Equal(t, "hash", res.MatchMode)
+
+	// 三个来源全部作为可切换列表返回。
+	require.Len(t, res.Alternatives, 3)
+	var ids []int64
+	for _, a := range res.Alternatives {
+		for _, e := range a.Episodes {
+			ids = append(ids, e.EpisodeID)
+		}
+	}
+	require.Equal(t, []int64{101, 102, 103}, ids)
+
+	// Candidates 的语义必须保持不变（这里不是"必须选择"），否则前端会停止自动加载。
+	require.Empty(t, res.Candidates)
+}
+
+// 只有一个来源时不应产生 alternatives，避免面板出现无意义的单条列表。
+func TestDanmakuFetchHashMatchNoAlternativesForSingleSource(t *testing.T) {
+	videoPath, _ := writeDanmakuTestVideo(t, "单来源动画.第01话.mkv")
+
+	const subtitle = "唯一副标题"
+	cfgMux := http.NewServeMux()
+	cfgMux.HandleFunc("/api/v2/search/episodes", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"hasMore":false,"animes":[{"animeId":1,"animeTitle":"单来源动画","episodes":[{"episodeId":201,"episodeTitle":"第1话 `+subtitle+`"}]}]}`)
+	})
+	cfgMux.HandleFunc("/api/v2/comment/201", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/xml")
+		fmt.Fprint(w, `<?xml version="1.0"?><i><d p="0.5,1,16777215,user1">唯一来源弹幕</d></i>`)
+	})
+	cfgSrv := httptest.NewServer(cfgMux)
+	t.Cleanup(cfgSrv.Close)
+
+	officialMux := http.NewServeMux()
+	officialMux.HandleFunc("/api/v2/match", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"success":true,"isMatched":true,"matches":[{"episodeId":90002,"animeId":9,"animeTitle":"单来源动画","episodeTitle":"第1话 `+subtitle+`"}]}`)
+	})
+	official := httptest.NewServer(officialMux)
+	t.Cleanup(official.Close)
+	overrideDanmakuOfficialBase(t, official.URL)
+
+	svc := newDanmakuTestService(t)
+	ctx := context.Background()
+	require.NoError(t, svc.repo.Setting.Set(ctx, DanmakuSourceKey, cfgSrv.URL))
+	seedDanmakuVideoMedia(t, svc, "mOne", "单来源动画", videoPath, 32000, 0)
+
+	res, err := svc.Fetch(ctx, "mOne", "", "")
+	require.NoError(t, err)
+	require.Contains(t, res.Raw, "唯一来源弹幕")
+	require.Empty(t, res.Alternatives)
+}
+
+// 开启合并后：同一集的多个来源被合并，重复弹幕（时间+内容相同）只保留一条。
+func TestDanmakuFetchMergeSourcesCombinesAndDeduplicates(t *testing.T) {
+	videoPath, _ := writeDanmakuTestVideo(t, "合并动画.第01话.mkv")
+
+	const subtitle = "同一副标题"
+	cfgMux := http.NewServeMux()
+	cfgMux.HandleFunc("/api/v2/search/episodes", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"hasMore":false,"animes":[`+
+			`{"animeId":1,"animeTitle":"来源A","episodes":[{"episodeId":301,"episodeTitle":"第1话 `+subtitle+`"}]},`+
+			`{"animeId":2,"animeTitle":"来源B","episodes":[{"episodeId":302,"episodeTitle":"第1话 `+subtitle+`"}]}]}`)
+	})
+	// A 与 B 各有一条重复弹幕（1.0 秒「重复弹幕」）和各自独有的一条。
+	cfgMux.HandleFunc("/api/v2/comment/301", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"count":2,"comments":[`+
+			`{"p":"1.00,1,16777215,u1","m":"重复弹幕"},`+
+			`{"p":"2.00,1,16777215,u1","m":"只在A"}]}`)
+	})
+	cfgMux.HandleFunc("/api/v2/comment/302", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"count":2,"comments":[`+
+			`{"p":"1.00,1,16777215,u2","m":"重复弹幕"},`+
+			`{"p":"3.00,1,16777215,u2","m":"只在B"}]}`)
+	})
+	cfgSrv := httptest.NewServer(cfgMux)
+	t.Cleanup(cfgSrv.Close)
+
+	officialMux := http.NewServeMux()
+	officialMux.HandleFunc("/api/v2/match", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"success":true,"isMatched":true,"matches":[{"episodeId":90003,"animeId":9,"animeTitle":"合并动画","episodeTitle":"第1话 `+subtitle+`"}]}`)
+	})
+	official := httptest.NewServer(officialMux)
+	t.Cleanup(official.Close)
+	overrideDanmakuOfficialBase(t, official.URL)
+
+	svc := newDanmakuTestService(t)
+	ctx := context.Background()
+	require.NoError(t, svc.repo.Setting.Set(ctx, DanmakuSourceKey, cfgSrv.URL))
+	seedDanmakuVideoMedia(t, svc, "mMerge", "合并动画", videoPath, 32000, 0)
+
+	res, err := svc.FetchWithOptions(ctx, "mMerge", "", "", DanmakuFetchOptions{MergeSources: true})
+	require.NoError(t, err)
+	require.Equal(t, 2, res.MergedSources, "expected both sources to be merged")
+
+	merged := parseDanmakuComments(res.Raw)
+	require.Len(t, merged, 3, "duplicate comment must collapse: got %#v", merged)
+	require.Equal(t, "重复弹幕", merged[0].Text)
+	require.Equal(t, 1.0, merged[0].TimeSec)
+	require.Equal(t, "只在A", merged[1].Text)
+	require.Equal(t, "只在B", merged[2].Text)
+	// 合并结果用 JSON 输出，前端据此选择解析分支。
+	require.Equal(t, "json", res.SourceType)
+}
+
+// 未开启合并时，行为与原来一致：只加载自动选中的那一个来源。
+func TestDanmakuFetchWithoutMergeLoadsSingleSource(t *testing.T) {
+	videoPath, _ := writeDanmakuTestVideo(t, "不合并动画.第01话.mkv")
+
+	const subtitle = "同一副标题"
+	cfgMux := http.NewServeMux()
+	cfgMux.HandleFunc("/api/v2/search/episodes", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"hasMore":false,"animes":[`+
+			`{"animeId":1,"animeTitle":"来源A","episodes":[{"episodeId":401,"episodeTitle":"第1话 `+subtitle+`"}]},`+
+			`{"animeId":2,"animeTitle":"来源B","episodes":[{"episodeId":402,"episodeTitle":"第1话 `+subtitle+`"}]}]}`)
+	})
+	cfgMux.HandleFunc("/api/v2/comment/401", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"count":1,"comments":[{"p":"1.00,1,16777215,u1","m":"只在A"}]}`)
+	})
+	cfgMux.HandleFunc("/api/v2/comment/402", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"count":1,"comments":[{"p":"1.00,1,16777215,u2","m":"只在B"}]}`)
+	})
+	cfgSrv := httptest.NewServer(cfgMux)
+	t.Cleanup(cfgSrv.Close)
+
+	officialMux := http.NewServeMux()
+	officialMux.HandleFunc("/api/v2/match", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"success":true,"isMatched":true,"matches":[{"episodeId":90004,"animeId":9,"animeTitle":"不合并动画","episodeTitle":"第1话 `+subtitle+`"}]}`)
+	})
+	official := httptest.NewServer(officialMux)
+	t.Cleanup(official.Close)
+	overrideDanmakuOfficialBase(t, official.URL)
+
+	svc := newDanmakuTestService(t)
+	ctx := context.Background()
+	require.NoError(t, svc.repo.Setting.Set(ctx, DanmakuSourceKey, cfgSrv.URL))
+	seedDanmakuVideoMedia(t, svc, "mNoMerge", "不合并动画", videoPath, 32000, 0)
+
+	res, err := svc.Fetch(ctx, "mNoMerge", "", "")
+	require.NoError(t, err)
+	require.Zero(t, res.MergedSources)
+	require.Equal(t, int64(401), res.EpisodeID)
+	// 只应有自动选中来源的弹幕。
+	require.Contains(t, res.Raw, "只在A")
+	require.NotContains(t, res.Raw, "只在B")
+	// 两个来源仍然作为可切换项返回（合并开关不影响候选列表）。
+	require.Len(t, res.Alternatives, 2)
+}
+
+// 合并偏好按用户持久化。
+func TestDanmakuMergeSourcesPreferencePersistsPerUser(t *testing.T) {
+	svc := newDanmakuTestService(t)
+	ctx := context.Background()
+
+	userA := model.User{Username: "merge-user-a", PasswordHash: "x", Role: "user", IsActive: true}
+	userA.ID = "user-a"
+	userB := model.User{Username: "merge-user-b", PasswordHash: "x", Role: "user", IsActive: true}
+	userB.ID = "user-b"
+	require.NoError(t, svc.repo.User.Create(ctx, &userA))
+	require.NoError(t, svc.repo.User.Create(ctx, &userB))
+
+	require.False(t, svc.MergeSourcesEnabled(ctx, "user-a"))
+	require.NoError(t, svc.SetMergeSources(ctx, "user-a", true))
+	require.True(t, svc.MergeSourcesEnabled(ctx, "user-a"))
+	// 另一个用户不受影响。
+	require.False(t, svc.MergeSourcesEnabled(ctx, "user-b"))
+
+	// 重新读取确认已落库，且 ConfigForUser 会带出该偏好。
+	cfg := svc.ConfigForUser(ctx, "user-a")
+	require.True(t, cfg.MergeSources)
+	require.False(t, svc.ConfigForUser(ctx, "user-b").MergeSources)
+}
+
+// 配置源搜不到对应剧集时必须回退官方：用官方自身的 episodeId 请求官方，
+// 而不是拿官方 ID 去撞配置源。
+func TestDanmakuFetchHashMatchFallsBackToOfficialWhenConfiguredHasNoMatch(t *testing.T) {
+	videoPath, _ := writeDanmakuTestVideo(t, "冷门动画.第01话.mkv")
+
+	cfgMux := http.NewServeMux()
+	cfgMux.HandleFunc("/api/v2/search/episodes", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"hasMore":false,"animes":[]}`)
+	})
+	cfgSrv := httptest.NewServer(cfgMux)
+	t.Cleanup(cfgSrv.Close)
+
+	officialMux := http.NewServeMux()
+	officialMux.HandleFunc("/api/v2/match", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"success":true,"isMatched":true,"matches":[{"episodeId":90001,"animeId":1001,"animeTitle":"冷门动画","episodeTitle":"第1话 无人知晓"}]}`)
+	})
+	officialMux.HandleFunc("/api/v2/comment/90001", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/xml")
+		fmt.Fprint(w, `<?xml version="1.0"?><i><d p="0.5,1,16777215,user1">弹幕来自官方</d></i>`)
+	})
+	official := httptest.NewServer(officialMux)
+	t.Cleanup(official.Close)
+	overrideDanmakuOfficialBase(t, official.URL)
+
+	svc := newDanmakuTestService(t)
+	ctx := context.Background()
+	require.NoError(t, svc.repo.Setting.Set(ctx, DanmakuSourceKey, cfgSrv.URL))
+	seedDanmakuVideoMedia(t, svc, "mNoMatch", "冷门动画", videoPath, 32000, 0)
+
+	res, err := svc.Fetch(ctx, "mNoMatch", "", "")
+	require.NoError(t, err)
+	require.Contains(t, res.Raw, "弹幕来自官方")
+	require.Equal(t, int64(90001), res.EpisodeID)
 }

 func TestDanmakuFetchHashMatchConfiguredFailsFallsBackOfficial(t *testing.T) {
@@ -159,13 +491,14 @@ func TestDanmakuFetchHashMatchConfiguredFailsFallsBackOfficial(t *testing.T) {
 	require.Contains(t, res.Raw, "弹幕官方兜底")
 }

-// 第 1 层未命中（matches 为空）→ 第 2 层按文件名+集数搜索。
+// 第 1 层未命中时，即使官方附带模糊候选，也不能把第一条当作精准匹配；
+// 应继续走第 2 层按文件名+集数搜索。
 func TestDanmakuFetchHashMissFallsBackToFileNameSearch(t *testing.T) {
 	videoPath, _ := writeDanmakuTestVideo(t, "测试动画.第01话.mkv")

 	cfgSrv := newDanmakuSourceServer(t) // 搜索 + 弹幕A
 	official := danmakuOfficialServer(t,
-		`{"success":true,"isMatched":false,"matches":[]}`,
+		`{"success":true,"isMatched":false,"matches":[{"episodeId":120140001,"animeId":12014,"animeTitle":"91天","episodeTitle":"第1话 杀人之夜"}]}`,
 		`<i></i>`, nil)
 	overrideDanmakuOfficialBase(t, official.URL)

@@ -178,8 +511,53 @@ func TestDanmakuFetchHashMissFallsBackToFileNameSearch(t *testing.T) {
 	require.NoError(t, err)
 	require.True(t, res.Enabled)
 	require.Contains(t, res.Raw, "弹幕A")
-	// 第 2 层命中：搜索请求按文件名进行。
-	require.Contains(t, cfgSrv.lastSearch, "anime=")
+	require.Equal(t, "filename", res.MatchMode)
+	require.Equal(t, "测试动画", res.AnimeTitle)
+	// 第 2 层命中：搜索请求按文件名进行，而不是误用官方第一条模糊候选。
+	query, err := url.ParseQuery(cfgSrv.lastSearch)
+	require.NoError(t, err)
+	require.Contains(t, query.Get("anime"), "测试动画.第01话")
+	require.NotContains(t, query.Get("anime"), "91天")
+}
+
+// hash 未精确命中时，若本地已有刮削的剧名、年份、集数和集标题，应先用这些
+// 元数据锁定正确来源，而不是直接进入大量候选的手工选择。
+func TestDanmakuFetchHashMissUsesScrapedMetadata(t *testing.T) {
+	videoPath, _ := writeDanmakuTestVideo(t, "local-release-name.mkv")
+	cfgSrv := newDanmakuSourceServerWithSearch(t,
+		`{"hasMore":false,"animes":[`+
+			`{"animeId":1,"animeTitle":"命运石之门 0(2018)【TV动画】from dandan&animeko","episodes":[{"episodeId":120140001,"episodeTitle":"【dandan&animeko】 第1话 零化域的缺失之环-Absolute Zero-"}]},`+
+			`{"animeId":2,"animeTitle":"命运石之门(2011)【TV动画】from dandan&animeko","episodes":[{"episodeId":25484,"episodeTitle":"【dandan&animeko】 第1话 始与终的序章-Turning Point-"}]},`+
+			`{"animeId":3,"animeTitle":"命运石之门(2011)【动漫】from 360","episodes":[{"episodeId":120140002,"episodeTitle":"【qq】 第1集"}]}`+
+			`]}`)
+	official := danmakuOfficialServer(t,
+		`{"success":true,"isMatched":false,"matches":[{"episodeId":120140001,"animeId":12014,"animeTitle":"91天","episodeTitle":"第1话 杀人之夜"}]}`,
+		`<i></i>`, nil)
+	overrideDanmakuOfficialBase(t, official.URL)
+
+	svc := newDanmakuTestService(t)
+	ctx := context.Background()
+	require.NoError(t, svc.repo.Setting.Set(ctx, DanmakuSourceKey, cfgSrv.URL()))
+	media := model.Media{
+		Title:        "命运石之门",
+		Year:         2011,
+		EpisodeNum:   1,
+		EpisodeTitle: "起始与终结的序章",
+		Path:         videoPath,
+		SizeBytes:    32000,
+		ScrapeStatus: "matched",
+	}
+	media.ID = "mScrapedMeta"
+	require.NoError(t, svc.repo.DB.Create(&media).Error)
+
+	res, err := svc.Fetch(ctx, media.ID, "", "")
+	require.NoError(t, err)
+	require.True(t, res.Enabled)
+	require.Contains(t, res.Raw, "弹幕A")
+	require.Equal(t, "metadata", res.MatchMode)
+	require.Equal(t, "命运石之门(2011)【TV动画】from dandan&animeko", res.AnimeTitle)
+	require.Equal(t, int64(25484), res.EpisodeID)
+	require.Empty(t, res.Candidates)
 }

 // strm：通过解析出的直链 Range 拉 16MB 前缀算 hash → match → 拉弹幕。
@@ -446,3 +824,38 @@ func TestDanmakuFetchEmbyRemoteStreamFailedFallsBackToSearch(t *testing.T) {
 	require.Equal(t, "降级搜索番剧", res.AnimeTitle)
 	require.Contains(t, res.Raw, "降级搜索弹幕")
 }
+
+// 即使刮削元数据完整，也应先走准确率最高的 hash 层。
+func TestDanmakuFetchPrefersHashOverCompleteMetadata(t *testing.T) {
+	videoPath, wantHash := writeDanmakuTestVideo(t, "测试动画.第01话.mkv")
+	var seen string
+	official := danmakuOfficialServer(t,
+		`{"success":true,"isMatched":true,"matches":[{"episodeId":25484,"animeId":1001,"animeTitle":"官方测试动画","episodeTitle":"第1话"}]}`,
+		`<?xml version="1.0"?><i><d p="0.5,1,16777215,user1">hash命中</d></i>`,
+		&seen)
+	overrideDanmakuOfficialBase(t, official.URL)
+
+	source := newDanmakuSourceServerWithSearch(t,
+		`{"hasMore":false,"animes":[{"animeId":2002,"animeTitle":"官方测试动画","episodes":[{"episodeId":25484,"episodeTitle":"第1话"}]}]}`)
+
+	svc := newDanmakuTestService(t)
+	ctx := context.Background()
+	require.NoError(t, svc.repo.Setting.Set(ctx, DanmakuSourceKey, source.URL()))
+
+	m := model.Media{
+		Title:        "测试动画",
+		Path:         videoPath,
+		SizeBytes:    123,
+		EpisodeNum:   1,
+		EpisodeTitle: "起始与终结的序章",
+		Year:         2011,
+	}
+	m.ID = "hash-first"
+	require.NoError(t, svc.repo.DB.Create(&m).Error)
+
+	res, err := svc.Fetch(ctx, "hash-first", "", "")
+	require.NoError(t, err)
+	require.Equal(t, "hash", res.MatchMode)
+	require.NotEmpty(t, res.Raw)
+	require.Contains(t, seen, wantHash)
+}
@@ -0,0 +1,220 @@
+package service
+
+import (
+	"encoding/json"
+	"encoding/xml"
+	"fmt"
+	"math"
+	"sort"
+	"strconv"
+	"strings"
+)
+
+// 弹幕合并：同一集在聚合源（如 LogVar）里常有多个库，开启合并后把这些库的
+// 弹幕一起去重后展示，而不是只显示其中一个。
+const (
+	// danmakuMergeMaxSources 限制一次合并涉及的来源数量，避免把一次播放
+	// 变成几十个上游请求。
+	danmakuMergeMaxSources = 10
+	// danmakuMergeConcurrency 限制并发抓取数，降低触发上游限流（429）的概率。
+	danmakuMergeConcurrency = 4
+	// danmakuMergeTimeToleranceSec 是判定「同一时间点」的容差。同一条弹幕在
+	// 不同源之间可能因精度处理差上零点几秒，用容差比对；文本仍要求完全一致，
+	// 因此不会把内容不同的弹幕误合。
+	danmakuMergeTimeToleranceSec = 0.5
+)
+
+// danmakuComment 是合并用的归一化弹幕。
+type danmakuComment struct {
+	TimeSec float64
+	Mode    int
+	Color   int
+	Text    string
+}
+
+// parseDanmakuComments 把上游载荷解析成归一化弹幕列表，兼容 dandanplay
+// JSON（{comments:[{p,m}]}）与 Bilibili XML（<d p="...">text</d>）两种格式。
+// 无法识别的载荷返回空列表，调用方据此跳过该来源。
+func parseDanmakuComments(raw string) []danmakuComment {
+	trimmed := strings.TrimSpace(raw)
+	if trimmed == "" {
+		return nil
+	}
+	if strings.HasPrefix(trimmed, "{") || strings.HasPrefix(trimmed, "[") {
+		if comments := parseDanmakuCommentsJSON(trimmed); len(comments) > 0 {
+			return comments
+		}
+	}
+	if strings.HasPrefix(trimmed, "<") {
+		return parseDanmakuCommentsXML(trimmed)
+	}
+	return nil
+}
+
+func parseDanmakuCommentsJSON(raw string) []danmakuComment {
+	// 兼容 {comments:[...]} 与裸数组两种形态。
+	var payload struct {
+		Comments []struct {
+			P string `json:"p"`
+			M string `json:"m"`
+			// 少数自建源直接给结构化字段。
+			Time  *float64 `json:"time"`
+			Text  string   `json:"text"`
+			Mode  *int     `json:"mode"`
+			Color *int     `json:"color"`
+		} `json:"comments"`
+	}
+	if err := json.Unmarshal([]byte(raw), &payload); err != nil {
+		var bare []struct {
+			P     string   `json:"p"`
+			M     string   `json:"m"`
+			Time  *float64 `json:"time"`
+			Text  string   `json:"text"`
+			Mode  *int     `json:"mode"`
+			Color *int     `json:"color"`
+		}
+		if err2 := json.Unmarshal([]byte(raw), &bare); err2 != nil {
+			return nil
+		}
+		payload.Comments = bare
+	}
+	out := make([]danmakuComment, 0, len(payload.Comments))
+	for _, item := range payload.Comments {
+		comment, ok := buildDanmakuComment(item.P, item.M, item.Time, item.Text, item.Mode, item.Color)
+		if ok {
+			out = append(out, comment)
+		}
+	}
+	return out
+}
+
+func parseDanmakuCommentsXML(raw string) []danmakuComment {
+	var doc struct {
+		Items []struct {
+			P    string `xml:"p,attr"`
+			Text string `xml:",chardata"`
+		} `xml:"d"`
+	}
+	if err := xml.Unmarshal([]byte(raw), &doc); err != nil {
+		return nil
+	}
+	out := make([]danmakuComment, 0, len(doc.Items))
+	for _, item := range doc.Items {
+		comment, ok := buildDanmakuComment(item.P, item.Text, nil, "", nil, nil)
+		if ok {
+			out = append(out, comment)
+		}
+	}
+	return out
+}
+
+// buildDanmakuComment 从 p 串或结构化字段构造一条弹幕。p 串格式为
+// "time,mode,color,user"（dandanplay 四段式）。
+func buildDanmakuComment(p, text string, timeSec *float64, plainText string, mode, color *int) (danmakuComment, bool) {
+	body := strings.TrimSpace(text)
+	if body == "" {
+		body = strings.TrimSpace(plainText)
+	}
+	if body == "" {
+		return danmakuComment{}, false
+	}
+	comment := danmakuComment{Text: body, Mode: 1}
+	if timeSec != nil {
+		comment.TimeSec = *timeSec
+	}
+	if mode != nil && *mode > 0 {
+		comment.Mode = *mode
+	}
+	if color != nil {
+		comment.Color = *color
+	}
+	if fields := strings.Split(p, ","); len(fields) >= 1 {
+		if t, err := strconv.ParseFloat(strings.TrimSpace(fields[0]), 64); err == nil {
+			comment.TimeSec = t
+		}
+		if len(fields) >= 2 {
+			if m, err := strconv.Atoi(strings.TrimSpace(fields[1])); err == nil && m > 0 {
+				comment.Mode = m
+			}
+		}
+		// 颜色所在位置取决于格式，用段数区分（与前端 parseBilibiliXml 的判定
+		// 一致）：Bilibili 的 p 是 "time,mode,fontSize,color,..."（>=5 段，
+		// 颜色在第 4 段）；dandanplay 的 p 是 "time,mode,color,userId"（4 段，
+		// 颜色在第 3 段）。不区分会把字号当成颜色。
+		colorIndex := 2
+		if len(fields) >= 5 {
+			colorIndex = 3
+		}
+		if len(fields) > colorIndex {
+			if c, err := strconv.Atoi(strings.TrimSpace(fields[colorIndex])); err == nil {
+				comment.Color = c
+			}
+		}
+	}
+	if math.IsNaN(comment.TimeSec) || math.IsInf(comment.TimeSec, 0) || comment.TimeSec < 0 {
+		return danmakuComment{}, false
+	}
+	// 无颜色信息时用白色，与前端默认一致。
+	if comment.Color <= 0 {
+		comment.Color = 16777215
+	}
+	return comment, true
+}
+
+// mergeDanmakuComments 合并多组弹幕并按「时间 + 内容」去重。
+//
+// 判定重复的条件：文本完全一致，且时间差在 danmakuMergeTimeToleranceSec 以内。
+// 之所以同时要求文本一致，是因为容差本身不足以区分内容；之所以需要容差，
+// 是因为同一条弹幕在不同来源间可能因精度处理差上零点几秒。
+func mergeDanmakuComments(sets [][]danmakuComment) []danmakuComment {
+	merged := make([]danmakuComment, 0, 512)
+	// keptTimes[文本] = 已保留的该文本时间列表，用于就近比对。
+	keptTimes := make(map[string][]float64)
+	for _, set := range sets {
+		for _, comment := range set {
+			times := keptTimes[comment.Text]
+			duplicate := false
+			for _, kept := range times {
+				if math.Abs(kept-comment.TimeSec) <= danmakuMergeTimeToleranceSec {
+					duplicate = true
+					break
+				}
+			}
+			if duplicate {
+				continue
+			}
+			keptTimes[comment.Text] = append(times, comment.TimeSec)
+			merged = append(merged, comment)
+		}
+	}
+	sort.SliceStable(merged, func(i, j int) bool { return merged[i].TimeSec < merged[j].TimeSec })
+	return merged
+}
+
+// encodeDanmakuComments 把合并结果编码成 dandanplay JSON，前端 parseDanmaku
+// 已支持该格式（{comments:[{p,m}]}）。
+func encodeDanmakuComments(comments []danmakuComment) string {
+	type item struct {
+		Cid int    `json:"cid"`
+		P   string `json:"p"`
+		M   string `json:"m"`
+		T   int    `json:"t"`
+	}
+	payload := struct {
+		Count    int    `json:"count"`
+		Comments []item `json:"comments"`
+	}{Count: len(comments), Comments: make([]item, 0, len(comments))}
+	for i, comment := range comments {
+		payload.Comments = append(payload.Comments, item{
+			Cid: i + 1,
+			P:   fmt.Sprintf("%.2f,%d,%d,merged", comment.TimeSec, comment.Mode, comment.Color),
+			M:   comment.Text,
+			T:   int(comment.TimeSec),
+		})
+	}
+	encoded, err := json.Marshal(payload)
+	if err != nil {
+		return ""
+	}
+	return string(encoded)
+}
@@ -0,0 +1,125 @@
+package service
+
+import (
+	"encoding/json"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestParseDanmakuCommentsSupportsDandanplayJson(t *testing.T) {
+	raw := `{"count":2,"comments":[` +
+		`{"cid":1,"p":"1.50,1,16777215,userA","m":"第一条"},` +
+		`{"cid":2,"p":"2.00,5,16711680,userB","m":"顶部红字"}]}`
+	comments := parseDanmakuComments(raw)
+	require.Len(t, comments, 2)
+	require.Equal(t, 1.5, comments[0].TimeSec)
+	require.Equal(t, 1, comments[0].Mode)
+	require.Equal(t, 16777215, comments[0].Color)
+	require.Equal(t, "第一条", comments[0].Text)
+	// 第 5 种模式是顶部弹幕，颜色 16711680 = 0xFF0000。
+	require.Equal(t, 5, comments[1].Mode)
+	require.Equal(t, 16711680, comments[1].Color)
+}
+
+func TestParseDanmakuCommentsSupportsBilibiliXml(t *testing.T) {
+	raw := `<?xml version="1.0" encoding="UTF-8"?><i>` +
+		`<d p="3.25,1,25,16777215,1700000000,0,abc,def">来自 XML</d>` +
+		`</i>`
+	comments := parseDanmakuComments(raw)
+	require.Len(t, comments, 1)
+	require.Equal(t, 3.25, comments[0].TimeSec)
+	require.Equal(t, "来自 XML", comments[0].Text)
+	// Bilibili 的 5 段式里第 3 段是字号、第 4 段才是颜色，必须取第 4 段。
+	require.Equal(t, 16777215, comments[0].Color)
+}
+
+func TestParseDanmakuCommentsReturnsNilForUnsupportedPayload(t *testing.T) {
+	require.Nil(t, parseDanmakuComments(""))
+	require.Nil(t, parseDanmakuComments("not a danmaku payload"))
+}
+
+// 同一时间 + 同一内容视为重复，只保留一条。
+func TestMergeDanmakuCommentsDeduplicatesByTimeAndText(t *testing.T) {
+	setA := []danmakuComment{
+		{TimeSec: 1.0, Mode: 1, Color: 16777215, Text: "哈哈"},
+		{TimeSec: 5.0, Mode: 1, Color: 16777215, Text: "只有A有"},
+	}
+	setB := []danmakuComment{
+		{TimeSec: 1.0, Mode: 1, Color: 16777215, Text: "哈哈"}, // 与 A 完全重复
+		{TimeSec: 5.2, Mode: 1, Color: 16777215, Text: "只有B有"},
+	}
+	merged := mergeDanmakuComments([][]danmakuComment{setA, setB})
+	require.Len(t, merged, 3)
+	require.Equal(t, 1.0, merged[0].TimeSec)
+	require.Equal(t, "哈哈", merged[0].Text)
+	require.Equal(t, "只有A有", merged[1].Text)
+	require.Equal(t, "只有B有", merged[2].Text)
+}
+
+// 时间差在容差内且文本一致时也判为重复（跨源可能有零点几秒的精度差）。
+func TestMergeDanmakuCommentsDeduplicatesWithinTolerance(t *testing.T) {
+	merged := mergeDanmakuComments([][]danmakuComment{
+		{{TimeSec: 10.0, Mode: 1, Text: "2333"}},
+		{{TimeSec: 10.3, Mode: 1, Text: "2333"}},
+	})
+	require.Len(t, merged, 1)
+	require.Equal(t, 10.0, merged[0].TimeSec)
+}
+
+// 内容相同但时间相距较远时是两条独立弹幕，不能合并。
+func TestMergeDanmakuCommentsKeepsSameTextAtDifferentTimes(t *testing.T) {
+	merged := mergeDanmakuComments([][]danmakuComment{
+		{{TimeSec: 1.0, Mode: 1, Text: "前方高能"}},
+		{{TimeSec: 30.0, Mode: 1, Text: "前方高能"}},
+	})
+	require.Len(t, merged, 2)
+}
+
+// 时间相同但内容不同也不能合并。
+func TestMergeDanmakuCommentsKeepsDifferentTextAtSameTime(t *testing.T) {
+	merged := mergeDanmakuComments([][]danmakuComment{
+		{{TimeSec: 2.0, Mode: 1, Text: "AAA"}},
+		{{TimeSec: 2.0, Mode: 1, Text: "BBB"}},
+	})
+	require.Len(t, merged, 2)
+}
+
+func TestMergeDanmakuCommentsSortsByTime(t *testing.T) {
+	merged := mergeDanmakuComments([][]danmakuComment{
+		{{TimeSec: 9.0, Mode: 1, Text: "后"}},
+		{{TimeSec: 1.0, Mode: 1, Text: "前"}},
+	})
+	require.Len(t, merged, 2)
+	require.Equal(t, 1.0, merged[0].TimeSec)
+	require.Equal(t, 9.0, merged[1].TimeSec)
+}
+
+// 编码结果必须能被前端的 dandanplay JSON 分支解析（p + m 两个字符串字段）。
+func TestEncodeDanmakuCommentsProducesDandanplayShape(t *testing.T) {
+	encoded := encodeDanmakuComments([]danmakuComment{
+		{TimeSec: 1.5, Mode: 5, Color: 16711680, Text: "顶部"},
+	})
+	var payload struct {
+		Count    int `json:"count"`
+		Comments []struct {
+			Cid int    `json:"cid"`
+			P   string `json:"p"`
+			M   string `json:"m"`
+			T   int    `json:"t"`
+		} `json:"comments"`
+	}
+	require.NoError(t, json.Unmarshal([]byte(encoded), &payload))
+	require.Equal(t, 1, payload.Count)
+	require.Len(t, payload.Comments, 1)
+	require.Equal(t, "1.50,5,16711680,merged", payload.Comments[0].P)
+	require.Equal(t, "顶部", payload.Comments[0].M)
+
+	// 回环：编码后的载荷应能再次解析出一致的弹幕。
+	roundTrip := parseDanmakuComments(encoded)
+	require.Len(t, roundTrip, 1)
+	require.Equal(t, 1.5, roundTrip[0].TimeSec)
+	require.Equal(t, 5, roundTrip[0].Mode)
+	require.Equal(t, 16711680, roundTrip[0].Color)
+	require.Equal(t, "顶部", roundTrip[0].Text)
+}
@@ -13,10 +13,14 @@ import (
 	"net/url"
 	"os"
 	"path/filepath"
+	"regexp"
 	"strconv"
 	"strings"
 	"sync"
 	"time"
+	"unicode"
+
+	"golang.org/x/sync/singleflight"

 	"go.uber.org/zap"

@@ -57,6 +61,14 @@ type DanmakuRenderConfig struct {
 	Opacity  string `json:"opacity"`
 	FontSize string `json:"font_size"`
 	Area     string `json:"area"`
+	// MergeSources 是当前用户的弹幕合并偏好（按用户存储）。
+	MergeSources bool `json:"merge_sources"`
+}
+
+// DanmakuFetchOptions 承载单次抓取的调用方偏好。
+type DanmakuFetchOptions struct {
+	// MergeSources 为真时，同一集的多个来源会被合并去重后一起返回。
+	MergeSources bool
 }

 // DanmakuFetchResult is what /api/danmaku/:id returns. Raw holds the upstream
@@ -71,13 +83,21 @@ type DanmakuRenderConfig struct {
 // metadata so the player UI can display which episode was loaded.
 type DanmakuFetchResult struct {
 	DanmakuRenderConfig
-	SourceType   string         `json:"source_type"`
-	Raw          string         `json:"raw,omitempty"`
-	Candidates   []DanmakuAnime `json:"candidates,omitempty"`
+	SourceType string         `json:"source_type"`
+	Raw        string         `json:"raw,omitempty"`
+	Candidates []DanmakuAnime `json:"candidates,omitempty"`
+	// Alternatives 是「同一集的其它可选来源」。与 Candidates 语义不同：
+	// Candidates 表示自动匹配不唯一、必须由用户选择后才能加载弹幕；
+	// Alternatives 表示弹幕已经自动加载好了，这里额外提供同集的其它来源
+	// （LogVar 聚合了多个视频网站，同一集常有多个库）供用户随时切换，
+	// 不必再手动搜索一遍。
+	Alternatives []DanmakuAnime `json:"alternatives,omitempty"`
 	AnimeTitle   string         `json:"anime_title,omitempty"`
 	EpisodeTitle string         `json:"episode_title,omitempty"`
 	EpisodeID    int64          `json:"episode_id,omitempty"`
 	MatchMode    string         `json:"match_mode,omitempty"`
+	// MergedSources 表示本次结果由多少个来源合并而成（未合并时为 0）。
+	MergedSources int `json:"merged_sources,omitempty"`
 }

 // DanmakuAnime is one search hit (an anime) with its episode list, mirroring
@@ -118,6 +138,12 @@ type DanmakuService struct {

 	hashCacheMu sync.Mutex
 	hashCache   map[string]string // stamp → 16MB-prefix MD5
+
+	// resultCache 缓存整条弹幕抓取结果，避免同一集重复播放时重走
+	// 「16MB 哈希 + 上游搜索 + 评论拉取」这条高延迟链路。
+	resultCacheMu sync.Mutex
+	resultCache   map[string]danmakuResultCacheEntry
+	fetchGroup    singleflight.Group
 }

 func danmakuHTTPClient() *http.Client {
@@ -129,10 +155,11 @@ func NewDanmakuService(log *zap.Logger, repo *repository.Container) *DanmakuServ
 		log = zap.NewNop()
 	}
 	return &DanmakuService{
-		log:       log,
-		repo:      repo,
-		client:    danmakuHTTPClient(),
-		hashCache: make(map[string]string),
+		log:         log,
+		repo:        repo,
+		client:      danmakuHTTPClient(),
+		hashCache:   make(map[string]string),
+		resultCache: make(map[string]danmakuResultCacheEntry),
 	}
 }

@@ -152,6 +179,121 @@ func (s *DanmakuService) SetRemoteMediaResolver(resolve DanmakuRemoteMediaResolv
 	}
 }

+// 弹幕抓取结果缓存：同一集在 TTL 内重复播放时直接返回，避免重复执行
+// 「16MB 前置哈希 → 上游搜索 → 评论拉取」这条高延迟链路。弹幕库内容变化
+// 很慢，而用户通常会在短时间内反复切集/回看，因此 TTL 取 6 小时。
+const (
+	danmakuResultCacheTTL        = 6 * time.Hour
+	danmakuResultCacheMaxEntries = 64
+	// 候选列表由上游搜索决定，相对稳定但可能随源更新，缓存 10 分钟。
+	danmakuResultCacheCandidateTTL = 10 * time.Minute
+	// 空结果可能只是上游临时抖动，只短暂缓存，避免长时间看不到弹幕。
+	danmakuResultCacheEmptyTTL = time.Minute
+)
+
+type danmakuResultCacheEntry struct {
+	result    *DanmakuFetchResult
+	expiresAt time.Time
+	storedAt  time.Time
+}
+
+func danmakuResultCacheKey(source, mediaID, keyword, episodeID string, merge bool) string {
+	return strings.Join([]string{
+		strings.TrimSpace(source),
+		mediaID,
+		strings.TrimSpace(keyword),
+		strings.TrimSpace(episodeID),
+		strconv.FormatBool(merge),
+	}, "\x00")
+}
+
+func (s *DanmakuService) resultCacheGet(key string) (*DanmakuFetchResult, bool) {
+	if s == nil || key == "" {
+		return nil, false
+	}
+	now := time.Now()
+	s.resultCacheMu.Lock()
+	defer s.resultCacheMu.Unlock()
+	entry, ok := s.resultCache[key]
+	if !ok {
+		return nil, false
+	}
+	if now.After(entry.expiresAt) {
+		delete(s.resultCache, key)
+		return nil, false
+	}
+	return cloneDanmakuFetchResult(entry.result), true
+}
+
+func (s *DanmakuService) resultCachePut(key string, result *DanmakuFetchResult) {
+	if s == nil || key == "" || result == nil {
+		return
+	}
+	now := time.Now()
+	s.resultCacheMu.Lock()
+	defer s.resultCacheMu.Unlock()
+	if s.resultCache == nil {
+		s.resultCache = make(map[string]danmakuResultCacheEntry)
+	}
+	ttl := danmakuResultCacheTTLFor(result)
+	if ttl <= 0 {
+		return
+	}
+	if _, exists := s.resultCache[key]; !exists && len(s.resultCache) >= danmakuResultCacheMaxEntries {
+		oldestKey := ""
+		var oldest time.Time
+		for k, entry := range s.resultCache {
+			if oldestKey == "" || entry.storedAt.Before(oldest) {
+				oldestKey, oldest = k, entry.storedAt
+			}
+		}
+		delete(s.resultCache, oldestKey)
+	}
+	s.resultCache[key] = danmakuResultCacheEntry{
+		result:    cloneDanmakuFetchResult(result),
+		expiresAt: now.Add(ttl),
+		storedAt:  now,
+	}
+}
+
+// danmakuResultCacheTTLFor 按结果完整性选择缓存时长：拿到弹幕正文才值得
+// 长缓存；只有候选列表时短缓存；空结果只缓存一分钟。
+func danmakuResultCacheTTLFor(result *DanmakuFetchResult) time.Duration {
+	if result == nil {
+		return 0
+	}
+	if strings.TrimSpace(result.Raw) != "" {
+		return danmakuResultCacheTTL
+	}
+	if len(result.Candidates) > 0 {
+		return danmakuResultCacheCandidateTTL
+	}
+	return danmakuResultCacheEmptyTTL
+}
+
+// cloneDanmakuFetchResult 深拷贝切片字段，避免缓存命中后调用方修改共享数据。
+func cloneDanmakuFetchResult(in *DanmakuFetchResult) *DanmakuFetchResult {
+	if in == nil {
+		return nil
+	}
+	out := *in
+	out.Candidates = cloneDanmakuAnimeList(in.Candidates)
+	out.Alternatives = cloneDanmakuAnimeList(in.Alternatives)
+	return &out
+}
+
+func cloneDanmakuAnimeList(in []DanmakuAnime) []DanmakuAnime {
+	if in == nil {
+		return nil
+	}
+	out := make([]DanmakuAnime, len(in))
+	for i, anime := range in {
+		out[i] = anime
+		out[i].Episodes = append([]DanmakuEpisode(nil), anime.Episodes...)
+	}
+	return out
+}
+
 // Config reads danmaku settings from the runtime settings table.
 func (s *DanmakuService) Config(ctx context.Context) DanmakuRenderConfig {
 	cfg := DanmakuRenderConfig{
@@ -177,6 +319,41 @@ func (s *DanmakuService) Config(ctx context.Context) DanmakuRenderConfig {
 	return cfg
 }

+// ConfigForUser 在全局渲染设置之外附加当前用户的个性化偏好。
+func (s *DanmakuService) ConfigForUser(ctx context.Context, userID string) DanmakuRenderConfig {
+	cfg := s.Config(ctx)
+	cfg.MergeSources = s.MergeSourcesEnabled(ctx, userID)
+	return cfg
+}
+
+// MergeSourcesEnabled 返回该用户的弹幕合并偏好，读取失败时回退为关闭。
+func (s *DanmakuService) MergeSourcesEnabled(ctx context.Context, userID string) bool {
+	if s == nil || s.repo == nil || s.repo.User == nil {
+		return false
+	}
+	userID = strings.TrimSpace(userID)
+	if userID == "" {
+		return false
+	}
+	user, err := s.repo.User.FindByID(ctx, userID)
+	if err != nil || user == nil {
+		return false
+	}
+	return user.DanmakuMergeSources
+}
+
+// SetMergeSources 持久化该用户的弹幕合并偏好。
+func (s *DanmakuService) SetMergeSources(ctx context.Context, userID string, enabled bool) error {
+	if s == nil || s.repo == nil || s.repo.User == nil {
+		return errors.New("danmaku settings unavailable")
+	}
+	userID = strings.TrimSpace(userID)
+	if userID == "" {
+		return errors.New("missing user")
+	}
+	return s.repo.User.UpdateFields(ctx, userID, map[string]any{"danmaku_merge_sources": enabled})
+}
+
 // Fetch retrieves danmaku for the given media. keyword overrides the
 // media-derived search term (empty = use the video's own name); pass it from
 // the player when the user searches for a custom title. episodeID forces a
@@ -186,19 +363,60 @@ func (s *DanmakuService) Config(ctx context.Context) DanmakuRenderConfig {
 //  1. match: MD5 of the first 16MB of the video (local file read directly,
 //     .strm resolved to a direct link and range-fetched) → /api/v2/match
 //     against the official endpoint, which yields the episode library id.
-//  2. search by the playing file's name + episode number.
-//  3. current auto-identification (original name → title → file name + episode,
+//  2. scraped metadata: title + episode number + episode title, filtered by
+//     release year and subtitle to disambiguate same-name seasons.
+//  3. search by the playing file's name + episode number.
+//  4. current auto-identification (original name → title → file name + episode,
 //     single hit used, several hits returned as candidates for the player).
-//  4. manual: the player picks from the returned candidates (episodeID /
+//  5. manual: the player picks from the returned candidates (episodeID /
 //     keyword override).
 //
 // Comments are always fetched from the configured source first (when set)
-// and fall back to the official endpoint on failure; identification itself
+// and fall back to the official endpoint on failure. Only hash identification
 // always goes to the official endpoint.
 //
 // When danmaku is disabled the result carries Enabled=false so the player can
 // silently skip rendering.
 func (s *DanmakuService) Fetch(ctx context.Context, mediaID, keyword, episodeID string) (*DanmakuFetchResult, error) {
+	return s.FetchWithOptions(ctx, mediaID, keyword, episodeID, DanmakuFetchOptions{})
+}
+
+// FetchWithOptions 是 Fetch 的带偏好版本。结果按「配置源 + 媒体 + 关键词 +
+// 指定集 + 合并开关」缓存，并用 singleflight 合并并发请求，避免同一集被重复抓取。
+func (s *DanmakuService) FetchWithOptions(ctx context.Context, mediaID, keyword, episodeID string, opts DanmakuFetchOptions) (*DanmakuFetchResult, error) {
+	if s == nil {
+		return nil, errors.New("danmaku service unavailable")
+	}
+	cfg := s.Config(ctx)
+	if !cfg.Enabled {
+		return &DanmakuFetchResult{DanmakuRenderConfig: cfg, SourceType: "auto"}, nil
+	}
+	key := danmakuResultCacheKey(cfg.Source, mediaID, keyword, episodeID, opts.MergeSources)
+	if cached, ok := s.resultCacheGet(key); ok {
+		return cached, nil
+	}
+	value, err, _ := s.fetchGroup.Do(key, func() (any, error) {
+		// 等待期间可能已有同一 key 的请求写入缓存。
+		if cached, ok := s.resultCacheGet(key); ok {
+			return cached, nil
+		}
+		res, err := s.fetchWithOptionsUncached(ctx, mediaID, keyword, episodeID, opts)
+		if err != nil {
+			// 与原实现一致：失败时仍把已填充的渲染配置/匹配信息交给调用方。
+			return res, err
+		}
+		s.resultCachePut(key, res)
+		return res, nil
+	})
+	res, _ := value.(*DanmakuFetchResult)
+	if err != nil {
+		return cloneDanmakuFetchResult(res), err
+	}
+	return cloneDanmakuFetchResult(res), nil
+}
+
+// fetchWithOptionsUncached 是未命中缓存时执行的原始抓取流程。
+func (s *DanmakuService) fetchWithOptionsUncached(ctx context.Context, mediaID, keyword, episodeID string, opts DanmakuFetchOptions) (*DanmakuFetchResult, error) {
 	res := &DanmakuFetchResult{DanmakuRenderConfig: s.Config(ctx), SourceType: "auto"}
 	if !res.Enabled {
 		return res, nil
@@ -234,6 +452,12 @@ func (s *DanmakuService) Fetch(ctx context.Context, mediaID, keyword, episodeID
 	}

 	target := ""
+	// targetBase 是 target 所属的源。各源的 episodeId 空间互相独立，必须用
+	// 产生该 ID 的源去请求弹幕，否则会拿到 404；默认沿用「配置源优先」行为。
+	targetBase := configured
+	// hashOfficialID 记录 hash 层的官方 episodeId。仅当配置源重定位成功时
+	// 才填，用于「配置源该集无弹幕」时回官方兜底。
+	hashOfficialID := int64(0)

 	// 1) hash 识别：始终走官方 /api/v2/match（keyword 手动覆盖时跳过，直接走第 3 层）。
 	if target == "" && !manualKeyword && media != nil && (media.Path != "" || IsEmbyRemoteID(media.ID)) {
@@ -250,21 +474,59 @@ func (s *DanmakuService) Fetch(ctx context.Context, mediaID, keyword, episodeID
 			if err != nil {
 				s.log.Warn("danmaku hash match failed", zap.String("media_id", mediaID), zap.Error(err))
 			} else if len(matches) > 0 {
-				target = fmt.Sprintf("%d", matches[0].EpisodeID)
-				res.AnimeTitle = matches[0].AnimeTitle
-				res.EpisodeTitle = matches[0].EpisodeTitle
-				res.EpisodeID = matches[0].EpisodeID
+				match := matches[0]
+				res.AnimeTitle = match.AnimeTitle
+				res.EpisodeTitle = match.EpisodeTitle
+				res.EpisodeID = match.EpisodeID
 				res.MatchMode = "hash"
+				// match 返回的是官方 ID 空间的 episodeId，直接拿去问第三方源
+				// 只会 404（实测各源 ID 空间独立）。先用官方给到的剧名+集数
+				// 在配置源里重定位到它自己的 episodeId；定位不到就整条走官方。
+				if configured != "" && !sameDanmakuBase(configured, official) {
+					if matched, ok := s.lookupConfiguredEpisodes(ctx, configured, match); ok {
+						configuredID := firstDanmakuEpisodeID(matched)
+						target = strconv.FormatInt(configuredID, 10)
+						targetBase = configured
+						res.EpisodeID = configuredID
+						hashOfficialID = match.EpisodeID
+						// 同集有多个来源时全部带上，供面板里直接切换。
+						if len(matched) > 1 {
+							res.Alternatives = matched
+						}
+					}
+				}
+				if target == "" {
+					target = strconv.FormatInt(match.EpisodeID, 10)
+					targetBase = official
+				}
 			}
 		}
 	}

-	// 2) 按播放的文件名 + 集数搜索（keyword 手动覆盖时跳过，直接走第 3 层）。
+	// 2) hash 未命中时，优先使用刮削后的剧名、集数和集标题匹配。
+	// 该层能解决官方 hash 库未收录、但本地已经刮削出准确季度和单集标题的情况。
+	if target == "" && !manualKeyword && media != nil {
+		if matched, base, ok := s.lookupScrapedEpisodes(ctx, configured, official, media); ok {
+			configuredID := firstDanmakuEpisodeID(matched)
+			target = strconv.FormatInt(configuredID, 10)
+			targetBase = base
+			res.AnimeTitle = matched[0].AnimeTitle
+			res.EpisodeTitle = matched[0].Episodes[0].EpisodeTitle
+			res.EpisodeID = configuredID
+			res.MatchMode = "metadata"
+			if len(matched) > 1 {
+				res.Alternatives = matched
+			}
+		}
+	}
+
+	// 3) 按播放的文件名 + 集数搜索（keyword 手动覆盖时跳过，直接走第 4 层）。
 	if target == "" && !manualKeyword && media != nil && media.Path != "" {
 		if fileName := danmakuMatchFileName(media.Path); fileName != "" && fileName != term.name {
-			if candidates, err := s.searchCandidatesWithFallback(ctx, configured, official, fileName, term.episode); err == nil &&
+			if candidates, base, err := s.searchCandidatesWithSource(ctx, configured, official, fileName, term.episode); err == nil &&
 				len(candidates) == 1 && len(candidates[0].Episodes) > 0 {
 				target = fmt.Sprintf("%d", candidates[0].Episodes[0].EpisodeID)
+				targetBase = base
 				res.AnimeTitle = candidates[0].AnimeTitle
 				res.EpisodeTitle = candidates[0].Episodes[0].EpisodeTitle
 				res.EpisodeID = candidates[0].Episodes[0].EpisodeID
@@ -273,10 +535,10 @@ func (s *DanmakuService) Fetch(ctx context.Context, mediaID, keyword, episodeID
 		}
 	}

-	// 3) 现有自动识别：标题层级（original_name → title → 文件名）+ 集数，
+	// 4) 现有自动识别：标题层级（original_name → title → 文件名）+ 集数，
 	//    多结果返回候选列表交给播放器（歧义处理）。
 	if target == "" {
-		candidates, err := s.searchCandidatesWithFallback(ctx, configured, official, term.name, term.episode)
+		candidates, base, err := s.searchCandidatesWithSource(ctx, configured, official, term.name, term.episode)
 		if err != nil {
 			s.log.Warn("danmaku search failed", zap.String("media_id", mediaID), zap.String("name", term.name), zap.String("episode", term.episode), zap.Error(err))
 			return res, err
@@ -289,21 +551,159 @@ func (s *DanmakuService) Fetch(ctx context.Context, mediaID, keyword, episodeID
 			return res, errors.New("no danmaku library found for this video")
 		}
 		target = fmt.Sprintf("%d", candidates[0].Episodes[0].EpisodeID)
+		targetBase = base
 		res.AnimeTitle = candidates[0].AnimeTitle
 		res.EpisodeTitle = candidates[0].Episodes[0].EpisodeTitle
 		res.EpisodeID = candidates[0].Episodes[0].EpisodeID
 		res.MatchMode = "search"
 	}

-	raw, st, err := s.fetchCommentWithFallback(ctx, configured, official, target)
+	raw, st, err := s.fetchCommentWithFallback(ctx, targetBase, official, target)
 	if err != nil {
 		s.log.Warn("danmaku comment fetch failed", zap.String("media_id", mediaID), zap.String("episode_id", target), zap.Error(err))
 		return res, err
 	}
+	// 第三方目录里存在该集，不代表它真的收录了弹幕（实测部分条目返回
+	// count=0）。这种「拿到空库」的情况要用官方 episodeId 再试一次，否则
+	// 重定位后反而会静默变成无弹幕 —— 旧写法是靠官方 ID 撞 404 才走到官方
+	// 兜底的，改用重定位就必须显式补上这一步。
+	if hashOfficialID != 0 && danmakuCommentCount(raw) == 0 {
+		officialTarget := strconv.FormatInt(hashOfficialID, 10)
+		if officialRaw, officialType, officialErr := s.fetchCommentFromBase(ctx, official, officialTarget); officialErr == nil &&
+			danmakuCommentCount(officialRaw) > 0 {
+			raw, st = officialRaw, officialType
+			res.EpisodeID = hashOfficialID
+		} else if officialErr != nil {
+			s.log.Debug("danmaku official fallback for empty configured library failed",
+				zap.String("episode_id", officialTarget), zap.Error(officialErr))
+		}
+	}
+	// 合并多来源：仅在上游确实返回了多个同集来源时才有意义。
+	if opts.MergeSources && len(res.Alternatives) > 1 {
+		if mergedRaw, mergedCount, ok := s.mergeAlternativeSources(ctx, targetBase, res.Alternatives, res.EpisodeID, raw); ok {
+			raw, st = mergedRaw, "json"
+			res.MergedSources = mergedCount
+		}
+	}
 	res.Raw, res.SourceType = raw, st
 	return res, nil
 }

+// mergeAlternativeSources 并发抓取同一集的多个来源，按「时间 + 内容」去重后
+// 合并成单个载荷。已有载荷（existingRaw）会被复用，避免重复请求。
+// 返回合并后的载荷、实际参与合并的来源数与是否成功。
+func (s *DanmakuService) mergeAlternativeSources(ctx context.Context, base string, alternatives []DanmakuAnime, existingID int64, existingRaw string) (string, int, bool) {
+	ids := make([]int64, 0, len(alternatives)+1)
+	seen := map[int64]bool{}
+	if existingID > 0 {
+		seen[existingID] = true
+		ids = append(ids, existingID)
+	}
+	for _, anime := range alternatives {
+		for _, ep := range anime.Episodes {
+			if ep.EpisodeID <= 0 || seen[ep.EpisodeID] {
+				continue
+			}
+			seen[ep.EpisodeID] = true
+			ids = append(ids, ep.EpisodeID)
+			if len(ids) >= danmakuMergeMaxSources {
+				break
+			}
+		}
+		if len(ids) >= danmakuMergeMaxSources {
+			break
+		}
+	}
+	// 少于两个来源时无需合并。
+	if len(ids) < 2 {
+		return "", 0, false
+	}
+
+	var (
+		mu        sync.Mutex
+		collected [][]danmakuComment
+		wg        sync.WaitGroup
+		sem       = make(chan struct{}, danmakuMergeConcurrency)
+	)
+	collect := func(raw string) {
+		comments := parseDanmakuComments(raw)
+		if len(comments) == 0 {
+			return
+		}
+		mu.Lock()
+		collected = append(collected, comments)
+		mu.Unlock()
+	}
+	for _, id := range ids {
+		if id == existingID && existingRaw != "" {
+			collect(existingRaw)
+			continue
+		}
+		wg.Add(1)
+		go func(id int64) {
+			defer wg.Done()
+			sem <- struct{}{}
+			defer func() { <-sem }()
+			body, _, err := s.fetchCommentFromBase(ctx, base, strconv.FormatInt(id, 10))
+			if err != nil {
+				// 单个来源失败不影响整体合并，静默跳过。
+				return
+			}
+			collect(body)
+		}(id)
+	}
+	wg.Wait()
+
+	if len(collected) < 2 {
+		return "", 0, false
+	}
+	merged := mergeDanmakuComments(collected)
+	if len(merged) == 0 {
+		return "", 0, false
+	}
+	encoded := encodeDanmakuComments(merged)
+	if encoded == "" {
+		return "", 0, false
+	}
+	return encoded, len(collected), true
+}
+
+// fetchCommentFromBase 从单个源拉取弹幕，不做任何回退。
+func (s *DanmakuService) fetchCommentFromBase(ctx context.Context, base, target string) (raw, sourceType string, err error) {
+	raw, err = s.fetchBody(ctx, fmt.Sprintf("%s/api/v2/comment/%s?withRelated=true", base, target), true)
+	if err != nil {
+		return "", "auto", err
+	}
+	return raw, detectDanmakuSourceType(raw), nil
+}
+
+// danmakuCommentCount 估算弹幕条数，用于判断某个源是否真的返回了内容。
+// 同时兼容 dandanplay JSON 与 Bilibili XML 两种载荷。
+func danmakuCommentCount(raw string) int {
+	trimmed := strings.TrimSpace(raw)
+	if trimmed == "" {
+		return 0
+	}
+	switch {
+	case strings.HasPrefix(trimmed, "{"):
+		var payload struct {
+			Count    int               `json:"count"`
+			Comments []json.RawMessage `json:"comments"`
+		}
+		if err := json.Unmarshal([]byte(trimmed), &payload); err != nil {
+			return 0
+		}
+		if payload.Count > 0 {
+			return payload.Count
+		}
+		return len(payload.Comments)
+	case strings.HasPrefix(trimmed, "<"):
+		return strings.Count(trimmed, "<d ")
+	default:
+		return 0
+	}
+}
+
 // detectDanmakuSourceType guesses the comment payload format from its body.
 // The dandanplay protocol historically returned Bilibili-style XML, but newer
 // and self-hosted implementations return the dandanplay JSON shape
@@ -724,7 +1124,10 @@ type danmakuMatch struct {

 // matchOfficial identifies the video via POST /api/v2/match on the official
 // endpoint (always official, signed with the app credentials). Returns the
-// candidate list; empty means nothing matched.
+// candidate list only when the upstream explicitly reports a confident match;
+// empty means nothing matched. The API may return fuzzy suggestions together
+// with isMatched=false; those are not safe to auto-select because their first
+// item can belong to an unrelated anime.
 //
 // fileName must be URL-escaped: the official API rejects raw non-ASCII file
 // names with errorCode 2 (verified against the live API — QueryEscape's
@@ -774,13 +1177,14 @@ func (s *DanmakuService) matchOfficial(ctx context.Context, fileName, fileHash s
 		return nil, fmt.Errorf("danmaku match returned HTTP %d", resp.StatusCode)
 	}
 	var out struct {
-		Success bool           `json:"success"`
-		Matches []danmakuMatch `json:"matches"`
+		Success   bool           `json:"success"`
+		IsMatched bool           `json:"isMatched"`
+		Matches   []danmakuMatch `json:"matches"`
 	}
 	if err := json.Unmarshal(raw, &out); err != nil {
 		return nil, fmt.Errorf("danmaku match returned invalid JSON: %w", err)
 	}
-	if !out.Success {
+	if !out.Success || !out.IsMatched {
 		return nil, nil
 	}
 	return out.Matches, nil
@@ -794,13 +1198,14 @@ func sameDanmakuBase(a, b string) bool {
 	return errA == nil && errB == nil && strings.EqualFold(ua.Host, ub.Host)
 }

-// fetchCommentWithFallback fetches a comment library from the configured
-// source first (when set and different from official), falling back to the
-// official endpoint on failure.
-func (s *DanmakuService) fetchCommentWithFallback(ctx context.Context, configured, official, target string) (raw, sourceType string, err error) {
+// fetchCommentWithFallback fetches a comment library from primary first (when
+// set and different from official), falling back to the official endpoint on
+// failure. primary must be the source that issued target: episode ids are only
+// meaningful inside the source that produced them.
+func (s *DanmakuService) fetchCommentWithFallback(ctx context.Context, primary, official, target string) (raw, sourceType string, err error) {
 	var bases []string
-	if configured != "" && !sameDanmakuBase(configured, official) {
-		bases = append(bases, configured)
+	if primary != "" && !sameDanmakuBase(primary, official) {
+		bases = append(bases, primary)
 	}
 	bases = append(bases, official)
 	var lastErr error
@@ -817,16 +1222,301 @@ func (s *DanmakuService) fetchCommentWithFallback(ctx context.Context, configure
 	return "", "auto", lastErr
 }

-// searchCandidatesWithFallback searches the configured source first (when
-// set and different from official), falling back to the official endpoint on
-// failure.
-func (s *DanmakuService) searchCandidatesWithFallback(ctx context.Context, configured, official, name, episode string) ([]DanmakuAnime, error) {
+// searchCandidatesWithSource searches the configured source first (when set
+// and different from official), falling back to the official endpoint on
+// failure. It also reports which base produced the hits, because the caller
+// must fetch comments from that same base — episode ids are source-local.
+func (s *DanmakuService) searchCandidatesWithSource(ctx context.Context, configured, official, name, episode string) ([]DanmakuAnime, string, error) {
 	if configured != "" && !sameDanmakuBase(configured, official) {
 		candidates, err := s.searchCandidates(ctx, configured, name, episode)
 		if err == nil {
-			return candidates, nil
+			return candidates, configured, nil
 		}
 		s.log.Warn("danmaku search failed on configured source, falling back to official", zap.String("source", configured), zap.Error(err))
 	}
-	return s.searchCandidates(ctx, official, name, episode)
+	candidates, err := s.searchCandidates(ctx, official, name, episode)
+	return candidates, official, err
+}
+
+// danmakuEpisodeNumberRE 从「第N话 / 第N話 / 第N集」里取出集数。各源标题格式
+// 不一（有的只有集数、有的带副标题），正则只认集数标记本身。
+var danmakuEpisodeNumberRE = regexp.MustCompile(`第\s*(\d+(?:\.\d+)?)\s*[话話集]`)
+
+// danmakuTitleYearRE 匹配搜索源标题里的年份，例如「命运石之门(2011)」。
+var danmakuTitleYearRE = regexp.MustCompile(`\((?:19|20)\d{2}\)`)
+
+// danmakuEpisodeNumber 返回标题中的集数，取不到时返回空串。
+func danmakuEpisodeNumber(title string) string {
+	m := danmakuEpisodeNumberRE.FindStringSubmatch(title)
+	if len(m) < 2 {
+		return ""
+	}
+	return m[1]
+}
+
+// danmakuEpisodeSubtitle 返回「第N话」之后的副标题，用于区分同名前作/续作。
+func danmakuEpisodeSubtitle(title string) string {
+	loc := danmakuEpisodeNumberRE.FindStringIndex(title)
+	if loc == nil {
+		return ""
+	}
+	return strings.TrimSpace(title[loc[1]:])
+}
+
+// normalizeDanmakuText 去掉标点与空白，便于跨源比对副标题。注意它只做字符
+// 归一化，不剥离集数标记 —— 调用方传入的可能已经是剥离后的副标题。
+func normalizeDanmakuText(s string) []rune {
+	out := make([]rune, 0, 32)
+	for _, r := range strings.ToLower(s) {
+		if unicode.IsLetter(r) || unicode.IsDigit(r) {
+			out = append(out, r)
+		}
+	}
+	return out
+}
+
+// danmakuTitleYear 返回标题中显式标注的年份；没有年份时返回 0。
+func danmakuTitleYear(title string) int {
+	m := danmakuTitleYearRE.FindString(title)
+	if len(m) != 6 {
+		return 0
+	}
+	year, _ := strconv.Atoi(m[1:5])
+	return year
+}
+
+// danmakuSubtitleMatches 判断两个源的副标题是否指向同一集。
+//
+// 完全一致直接判定相同，且不设长度门槛 —— 中文副标题常常只有两三个字
+// （「辛」「序曲」），但它们本身就是很强的标识。只有在做包含/前缀这类模糊
+// 比对时才要求足够长度，避免短串误配到别的集。同一集在不同源的副标题长度
+// 也可能不同（一侧带 "-Fractal Androgynous-" 之类后缀），故保留模糊分支。
+func danmakuSubtitleMatches(candidateTitle, subtitle string) bool {
+	// candidateTitle 是完整标题，subtitle 已经剥离过集数标记，两者处理方式不同。
+	a := normalizeDanmakuText(danmakuEpisodeSubtitle(candidateTitle))
+	b := normalizeDanmakuText(subtitle)
+	if len(a) == 0 || len(b) == 0 {
+		return false
+	}
+	if string(a) == string(b) {
+		return true
+	}
+	const fuzzyMinRunes = 4
+	if len(a) < fuzzyMinRunes || len(b) < fuzzyMinRunes {
+		return false
+	}
+	if strings.Contains(string(a), string(b)) || strings.Contains(string(b), string(a)) {
+		return true
+	}
+	if danmakuRuneSimilarity(a, b) >= 0.7 {
+		return true
+	}
+	n := len(a)
+	if len(b) < n {
+		n = len(b)
+	}
+	if n > 12 {
+		n = 12
+	}
+	return string(a[:n]) == string(b[:n])
+}
+
+// danmakuRuneSimilarity 返回两个字符串的 LCS 相似度，分母取较短长度。
+// 弹幕源的日文/英文副标题常比刮削标题更长，因此不能直接用整体编辑距离；
+// 例如「起始与终结的序章」和「始与终的序章-Turning Point-」应被视为同一集。
+func danmakuRuneSimilarity(a, b []rune) float64 {
+	if len(a) == 0 || len(b) == 0 {
+		return 0
+	}
+	prev := make([]int, len(b)+1)
+	for _, ra := range a {
+		cur := make([]int, len(b)+1)
+		for j, rb := range b {
+			if ra == rb {
+				cur[j+1] = prev[j] + 1
+			} else if cur[j] > prev[j+1] {
+				cur[j+1] = cur[j]
+			} else {
+				cur[j+1] = prev[j+1]
+			}
+		}
+		prev = cur
+	}
+	minLen := len(a)
+	if len(b) < minLen {
+		minLen = len(b)
+	}
+	return float64(prev[len(b)]) / float64(minLen)
+}
+
+// lookupConfiguredEpisodes 用官方 match 给出的「剧名 + 集数」在配置源里重新
+// 定位同一集，返回配置源里所有指向该集的结果。
+//
+// 必须重定位：各源 episodeId 空间互相独立，官方 ID（如 135500001）在第三方
+// 源上只是一个不存在的编号，直接请求必然 404。官方 match 返回的 animeTitle /
+// episodeTitle 正好提供了跨源检索所需的剧名、集数与副标题。
+//
+// 返回列表而非单条：LogVar 这类源聚合了多个视频网站，同一集常有多个库，
+// 调用方取第一条自动加载，其余作为可切换来源交给用户。
+func (s *DanmakuService) lookupConfiguredEpisodes(ctx context.Context, configured string, m danmakuMatch) ([]DanmakuAnime, bool) {
+	episodeNum := danmakuEpisodeNumber(m.EpisodeTitle)
+	if episodeNum == "" || strings.TrimSpace(m.AnimeTitle) == "" {
+		return nil, false
+	}
+	candidates, err := s.searchCandidates(ctx, configured, m.AnimeTitle, episodeNum)
+	if err != nil {
+		s.log.Debug("danmaku configured lookup failed",
+			zap.String("source", configured),
+			zap.String("anime", m.AnimeTitle),
+			zap.Error(err))
+		return nil, false
+	}
+	matched := matchDanmakuEpisodes(candidates, episodeNum, m.EpisodeTitle)
+	if len(matched) == 0 {
+		return nil, false
+	}
+	return matched, true
+}
+
+// lookupScrapedEpisodes uses already-scraped media metadata to locate the
+// correct library when hash identification missed. Unlike the generic title
+// search, this path requires an explicit episode-title match and, when known,
+// a matching release year. That prevents Steins;Gate (2011) from being
+// confused with Steins;Gate 0 (2018) or other same-name entries.
+func (s *DanmakuService) lookupScrapedEpisodes(ctx context.Context, configured, official string, media *model.Media) ([]DanmakuAnime, string, bool) {
+	title, episodeNum, episodeTitle, ok := scrapedDanmakuMetadata(media)
+	if !ok {
+		return nil, "", false
+	}
+	candidates, base, err := s.searchCandidatesWithSource(ctx, configured, official, title, episodeNum)
+	if err != nil {
+		s.log.Debug("danmaku scraped metadata lookup failed",
+			zap.String("title", title),
+			zap.String("episode", episodeNum),
+			zap.Error(err))
+		return nil, "", false
+	}
+	matched := matchScrapedDanmakuEpisodes(candidates, title, media.Year, episodeNum, episodeTitle)
+	if len(matched) == 0 {
+		return nil, "", false
+	}
+	return matched, base, true
+}
+
+// scrapedDanmakuMetadata returns the query fields only when the media has
+// enough scraped information to identify a specific episode.
+func scrapedDanmakuMetadata(media *model.Media) (title, episodeNum, episodeTitle string, ok bool) {
+	if media == nil {
+		return "", "", "", false
+	}
+	title = strings.TrimSpace(media.Title)
+	if title == "" {
+		title = strings.TrimSpace(media.OriginalName)
+	}
+	episodeTitle = strings.TrimSpace(media.EpisodeTitle)
+	if title == "" || media.EpisodeNum <= 0 || episodeTitle == "" {
+		return "", "", "", false
+	}
+	return title, strconv.Itoa(media.EpisodeNum), episodeTitle, true
+}
+
+// matchScrapedDanmakuEpisodes filters title search hits by release year and
+// episode subtitle. The returned list keeps the source grouping so multiple
+// libraries for the same episode remain switchable in the player.
+func matchScrapedDanmakuEpisodes(candidates []DanmakuAnime, title string, year int, episodeNum, episodeTitle string) []DanmakuAnime {
+	out := make([]DanmakuAnime, 0, len(candidates))
+	for _, anime := range candidates {
+		if !danmakuAnimeTitleMatches(anime.AnimeTitle, title, year) {
+			continue
+		}
+		hits := matchDanmakuEpisodeHits(anime.Episodes, episodeNum, episodeTitle)
+		if len(hits) == 0 {
+			continue
+		}
+		anime.Episodes = hits
+		out = append(out, anime)
+	}
+	return out
+}
+
+// danmakuAnimeTitleMatches checks the scraped title and, when present, the
+// candidate's year. A candidate with a conflicting explicit year is rejected
+// even if its title contains the scraped title.
+func danmakuAnimeTitleMatches(animeTitle, mediaTitle string, year int) bool {
+	candidate := string(normalizeDanmakuText(animeTitle))
+	target := string(normalizeDanmakuText(mediaTitle))
+	if candidate == "" || target == "" || !strings.Contains(candidate, target) {
+		return false
+	}
+	if year > 0 {
+		if candidateYear := danmakuTitleYear(animeTitle); candidateYear > 0 && candidateYear != year {
+			return false
+		}
+	}
+	return true
+}
+
+// firstDanmakuEpisodeID 返回匹配列表里的第一条 episodeId，作为自动选中的库。
+func firstDanmakuEpisodeID(matched []DanmakuAnime) int64 {
+	for _, anime := range matched {
+		for _, ep := range anime.Episodes {
+			if ep.EpisodeID > 0 {
+				return ep.EpisodeID
+			}
+		}
+	}
+	return 0
+}
+
+// pickDanmakuEpisodeID 从配置源的搜索结果里挑出与目标集最匹配的一条。
+//
+// 搜索按「剧名+集数」返回，但同名不同季/不同版本会同时命中，且顺序不保证
+// 正确：实测「命运石之门 第18话」首条是《命运石之门 0(2018)》、《战区88 OVA
+// 第1话》首条是《战区88(2004) TV》，两者内容都不对，只有副标题能区分。因此：
+//   - 目标带副标题时，必须找到副标题一致的候选，否则放弃（宁可回退官方，
+//     也不能给用户放错番的弹幕）；
+//   - 目标没有副标题（如「第11话」）时，退而要求集数一致。
+func pickDanmakuEpisodeID(candidates []DanmakuAnime, episodeNum, episodeTitle string) (int64, bool) {
+	if id := firstDanmakuEpisodeID(matchDanmakuEpisodes(candidates, episodeNum, episodeTitle)); id != 0 {
+		return id, true
+	}
+	return 0, false
+}
+
+// matchDanmakuEpisodes 在搜索结果里筛出所有指向目标集的结果，保留原有的番剧
+// 分组结构（只留下命中的集数），因此调用方既能取第一条自动加载，也能把整个
+// 列表作为可切换来源展示。
+func matchDanmakuEpisodes(candidates []DanmakuAnime, episodeNum, episodeTitle string) []DanmakuAnime {
+	out := make([]DanmakuAnime, 0, len(candidates))
+	for _, anime := range candidates {
+		hits := matchDanmakuEpisodeHits(anime.Episodes, episodeNum, episodeTitle)
+		if len(hits) == 0 {
+			continue
+		}
+		anime.Episodes = hits
+		out = append(out, anime)
+	}
+	return out
+}
+
+// matchDanmakuEpisodeHits 返回同一番剧里指向目标集的弹幕库。
+func matchDanmakuEpisodeHits(episodes []DanmakuEpisode, episodeNum, episodeTitle string) []DanmakuEpisode {
+	subtitle := danmakuEpisodeSubtitle(episodeTitle)
+	// 刮削后的 episode_title 通常只保存副标题本身（例如「起始与终结的序章」），
+	// 不带「第1话」前缀。此时把它整体作为副标题参与比对。
+	if subtitle == "" && danmakuEpisodeNumber(episodeTitle) == "" {
+		subtitle = strings.TrimSpace(episodeTitle)
+	}
+	hits := make([]DanmakuEpisode, 0, len(episodes))
+	for _, ep := range episodes {
+		if ep.EpisodeID <= 0 || danmakuEpisodeNumber(ep.EpisodeTitle) != episodeNum {
+			continue
+		}
+		// 目标带副标题时必须副标题一致；没有副标题时仅凭集数匹配。
+		if subtitle != "" && !danmakuSubtitleMatches(ep.EpisodeTitle, subtitle) {
+			continue
+		}
+		hits = append(hits, ep)
+	}
+	return hits
 }
@@ -6,6 +6,8 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"path/filepath"
+	"sync"
+	"sync/atomic"
 	"testing"

 	"github.com/glebarez/sqlite"
@@ -22,7 +24,8 @@ func newDanmakuTestService(t *testing.T) *DanmakuService {
 	// 独立临时文件库，避免测试间通过共享内存库串数据。
 	db, err := gorm.Open(sqlite.Open(filepath.Join(t.TempDir(), "danmaku-test.db")), &gorm.Config{})
 	require.NoError(t, err)
-	require.NoError(t, db.AutoMigrate(&model.Setting{}, &model.Media{}))
+	// 需要 users 表：弹幕合并偏好按用户存储在 user 行上。
+	require.NoError(t, db.AutoMigrate(&model.Setting{}, &model.Media{}, &model.User{}))
 	repos := repository.New(db)
 	t.Cleanup(func() {
 		sqlDB, err := db.DB()
@@ -325,3 +328,79 @@ func TestDanmakuFetchDetectsJSONSource(t *testing.T) {
 	require.Equal(t, "xml", res2.SourceType)
 	require.Contains(t, res2.Raw, "弹幕A")
 }
+
+// 同一集在缓存 TTL 内重复请求时不应再访问上游（搜索和评论都只发一次）。
+func TestDanmakuFetchCachesRepeatedRequests(t *testing.T) {
+	var searchCalls, commentCalls int32
+	mux := http.NewServeMux()
+	mux.HandleFunc("/api/v2/search/episodes", func(w http.ResponseWriter, r *http.Request) {
+		atomic.AddInt32(&searchCalls, 1)
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"hasMore":false,"animes":[{"animeId":1001,"animeTitle":"测试动画","episodes":[{"episodeId":25484,"episodeTitle":"第1话"}]}]}`)
+	})
+	mux.HandleFunc("/api/v2/comment/25484", func(w http.ResponseWriter, r *http.Request) {
+		atomic.AddInt32(&commentCalls, 1)
+		w.Header().Set("Content-Type", "application/xml")
+		fmt.Fprint(w, `<?xml version="1.0"?><i><d p="0.5,1,16777215,user1">缓存测试</d></i>`)
+	})
+	srv := httptest.NewServer(mux)
+	defer srv.Close()
+
+	svc := newDanmakuTestService(t)
+	ctx := context.Background()
+	require.NoError(t, svc.repo.Setting.Set(ctx, DanmakuSourceKey, srv.URL))
+	seedDanmakuMedia(t, svc, "cache-media", "测试动画", "", 1)
+
+	first, err := svc.Fetch(ctx, "cache-media", "", "")
+	require.NoError(t, err)
+	require.NotEmpty(t, first.Raw)
+
+	second, err := svc.Fetch(ctx, "cache-media", "", "")
+	require.NoError(t, err)
+	require.Equal(t, first.Raw, second.Raw)
+	require.EqualValues(t, 1, atomic.LoadInt32(&searchCalls))
+	require.EqualValues(t, 1, atomic.LoadInt32(&commentCalls))
+}
+
+// 并发的同一集请求应被 singleflight 合并，上游只被访问一次。
+func TestDanmakuFetchCoalescesConcurrentRequests(t *testing.T) {
+	var searchCalls int32
+	mux := http.NewServeMux()
+	mux.HandleFunc("/api/v2/search/episodes", func(w http.ResponseWriter, r *http.Request) {
+		atomic.AddInt32(&searchCalls, 1)
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"hasMore":false,"animes":[{"animeId":1001,"animeTitle":"测试动画","episodes":[{"episodeId":25484,"episodeTitle":"第1话"}]}]}`)
+	})
+	mux.HandleFunc("/api/v2/comment/25484", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/xml")
+		fmt.Fprint(w, `<?xml version="1.0"?><i><d p="0.5,1,16777215,user1">并发测试</d></i>`)
+	})
+	srv := httptest.NewServer(mux)
+	defer srv.Close()
+
+	svc := newDanmakuTestService(t)
+	ctx := context.Background()
+	require.NoError(t, svc.repo.Setting.Set(ctx, DanmakuSourceKey, srv.URL))
+	seedDanmakuMedia(t, svc, "concurrent-media", "测试动画", "", 1)
+
+	const workers = 8
+	start := make(chan struct{})
+	errs := make(chan error, workers)
+	var wg sync.WaitGroup
+	for i := 0; i < workers; i++ {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			<-start
+			_, err := svc.Fetch(ctx, "concurrent-media", "", "")
+			errs <- err
+		}()
+	}
+	close(start)
+	wg.Wait()
+	close(errs)
+	for err := range errs {
+		require.NoError(t, err)
+	}
+	require.EqualValues(t, 1, atomic.LoadInt32(&searchCalls))
+}
@@ -71,6 +71,54 @@ func (e *EmbyService) ImageURL(ctx context.Context, id, imageType string) (strin
 	return "", nil
 }

+// imageInfoTypes 是 GET /Items/{Id}/Images 会报告的图片类型。只列 MeBox
+// 真正存储的两类：ImageURL 对 Thumb / Logo / Banner 等其余类型会回退到
+// 主图，若一并列出会让客户端以为存在这些图并去请求，实际拿到的却是主图。
+var imageInfoTypes = []string{"Primary", "Backdrop"}
+
+// ImageInfos 返回条目的图片清单，对应 Emby 的 GET /Items/{Id}/Images。
+// 客户端用它在详情页决定要加载哪些图；缺失该接口会落到 404，部分客户端
+// 因此把条目当成"无图"而放弃渲染海报。
+func (e *EmbyService) ImageInfos(ctx context.Context, id string) []map[string]any {
+	id = strings.TrimSpace(id)
+	if id == "" {
+		return nil
+	}
+	out := make([]map[string]any, 0, 2)
+	seen := map[string]bool{}
+	for _, imageType := range imageInfoTypes {
+		raw, err := e.ImageURL(ctx, id, imageType)
+		if err != nil {
+			continue
+		}
+		raw = strings.TrimSpace(raw)
+		// 非 Backdrop 类型在缺图时会回退到主图，去重避免同一张图重复出现。
+		if raw == "" || seen[raw] {
+			continue
+		}
+		seen[raw] = true
+		out = append(out, map[string]any{
+			"ImageType":  imageType,
+			"ImageIndex": 0,
+			"ImageTag":   id,
+		})
+	}
+	return out
+}
+
+// UserAvatarURL 返回用户头像的来源地址；用户未设置头像时返回空串。
+func (e *EmbyService) UserAvatarURL(ctx context.Context, userID string) string {
+	userID = strings.TrimSpace(userID)
+	if userID == "" || e == nil || e.repo == nil || e.repo.User == nil {
+		return ""
+	}
+	user, err := e.repo.User.FindByID(ctx, userID)
+	if err != nil || user == nil {
+		return ""
+	}
+	return strings.TrimSpace(user.AvatarURL)
+}
+
 // cachedLibraryCover returns a previously resolved library cover URL within TTL.
 func (e *EmbyService) cachedLibraryCover(id string) (string, bool) {
 	if e == nil || strings.TrimSpace(id) == "" {
@@ -120,8 +120,8 @@ const (
 )

 var (
-	embySeasonDirRE    = regexp.MustCompile(`(?i)^(season[\s._-]*\d+|s\d+|specials?|sp|ova|oad|extra|extras|第\s*[0-9一二三四五六七八九十百零两]+\s*季|特别篇|特別篇|番外|特典)$`)
-	embySeasonSuffixRE = regexp.MustCompile(`(?i)(?:[\s._-]+(?:season[\s._-]*\d+|s\d+|第\s*[0-9一二三四五六七八九十百零两]+\s*季|specials?|sp|ova|oad|extra|extras|特别篇|特別篇|番外|特典)|\s*第\s*[0-9一二三四五六七八九十百零两]+\s*季)\s*$`)
+	embySeasonDirRE    = regexp.MustCompile(`(?i)^(season[\s._-]*\d+|s\d+|specials?|sp|ovas?|oads?|ovds?|onas?|extras?|bonus(?:es)?|omake|picture[\s._-]*drama|ncop|nced|第\s*[0-9一二三四五六七八九十百零两]+\s*季|特别篇|特別篇|番外|特典|画像特典)$`)
+	embySeasonSuffixRE = regexp.MustCompile(`(?i)(?:[\s._-]+(?:season[\s._-]*\d+|s\d+|第\s*[0-9一二三四五六七八九十百零两]+\s*季|specials?|sp|ovas?|oads?|ovds?|onas?|extras?|bonus(?:es)?|omake|picture[\s._-]*drama|ncop|nced|特别篇|特別篇|番外|特典|画像特典)|\s*第\s*[0-9一二三四五六七八九十百零两]+\s*季)\s*$`)
 	embyYearSuffixRE   = regexp.MustCompile(`\s*[\(（\[]\d{4}[\)）\]]\s*$`)
 	embyEpisodeTitleRE = regexp.MustCompile(`(?i)\s*[-_ ]*s\d{1,2}e\d{1,3}.*$`)
 )
@@ -47,6 +47,20 @@ func (e *EmbyService) embyLatestCacheKey(userID, parentID string, limit int) str
 	return "media:emby:" + hex.EncodeToString(sum[:])
 }

+// defaultEmbyLatestCacheTTLSeconds 是 Emby「最新添加」缓存的兜底时长。
+const defaultEmbyLatestCacheTTLSeconds = 300
+
+// embyLatestCacheTTLSeconds 返回「最新添加」列表的缓存时长。它刻意比通用
+// 媒体缓存更长：客户端刷新首页时会同时请求全部媒体库的 Latest（生产环境
+// 观察到 73 个并发），缓存一旦集中过期，这批请求会同时穿透并各自重建
+// payload。延长后稳态下几乎全部命中缓存，冷启动频率也随之下降。
+func (e *EmbyService) embyLatestCacheTTLSeconds() int {
+	if e == nil || e.cfg == nil || e.cfg.Cache.EmbyLatestTTLSeconds < 1 {
+		return defaultEmbyLatestCacheTTLSeconds
+	}
+	return e.cfg.Cache.EmbyLatestTTLSeconds
+}
+
 func (e *EmbyService) mediaCacheTTLSeconds() int {
 	if e == nil || e.cfg == nil || e.cfg.Cache.MediaTTLSeconds < 1 {
 		return 90
@@ -140,7 +140,7 @@ func (e *EmbyService) LatestItems(ctx context.Context, userID, parentID string,
 		if episodic, err := e.libraryIsEpisodic(ctx, parentID); err == nil && episodic {
 			out, err := e.latestSeriesItemsForLibrary(ctx, userID, parentID, limit)
 			if err == nil && e.cache != nil {
-				e.cache.SetJSON(ctx, cacheKey, embyLatestCacheValue{Items: out}, time.Duration(e.mediaCacheTTLSeconds())*time.Second)
+				e.cache.SetJSON(ctx, cacheKey, embyLatestCacheValue{Items: out}, time.Duration(e.embyLatestCacheTTLSeconds())*time.Second)
 			}
 			return out, err
 		}
@@ -166,7 +166,7 @@ func (e *EmbyService) LatestItems(ctx context.Context, userID, parentID string,
 		return nil, err
 	}
 	if e.cache != nil {
-		e.cache.SetJSON(ctx, cacheKey, embyLatestCacheValue{Items: out}, time.Duration(e.mediaCacheTTLSeconds())*time.Second)
+		e.cache.SetJSON(ctx, cacheKey, embyLatestCacheValue{Items: out}, time.Duration(e.embyLatestCacheTTLSeconds())*time.Second)
 	}
 	return out, nil
 }
@@ -55,6 +55,17 @@ func (e *EmbyService) mediaVersionSiblings(ctx context.Context, m *model.Media)
 	if err := q.Find(&rows).Error; err != nil || len(rows) == 0 {
 		return []model.Media{*m}
 	}
+	targetKey := e.mediaVersionKey(ctx, m)
+	filtered := rows[:0]
+	for i := range rows {
+		if e.mediaVersionKey(ctx, &rows[i]) == targetKey {
+			filtered = append(filtered, rows[i])
+		}
+	}
+	rows = filtered
+	if len(rows) == 0 {
+		return []model.Media{*m}
+	}
 	rows = e.collapseExactPathRows(rows)
 	sort.SliceStable(rows, func(i, j int) bool {
 		if rows[i].ID == m.ID {
@@ -97,11 +108,28 @@ func (e *EmbyService) mediaVersionKey(ctx context.Context, m *model.Media) strin
 	if libraryGroup == "" {
 		libraryGroup = strings.TrimSpace(m.LibraryID)
 	}
+	kind := mediaSpecialKind(m.Path)
+	season, episode := m.SeasonNum, m.EpisodeNum
+	if kind != "" && kind != mediaSpecialTheatrical && episode <= 0 {
+		if parsedSeason, parsedEpisode := ParseEpisode(m.Path); parsedEpisode > 0 {
+			season, episode = parsedSeason, parsedEpisode
+		}
+	}
+	kindKey := ""
+	if kind != "" {
+		kindKey = "|kind:" + kind
+	}
+	if kind != "" && kind != mediaSpecialTheatrical && episode <= 0 {
+		if stemKey := mediaVersionStemGroupKey(*m, libraryGroup); stemKey != "" {
+			return stemKey + kindKey
+		}
+		return libraryGroup + "|special-item:" + kind + "|id:" + m.ID
+	}
 	if m.TMDbID > 0 {
-		return fmt.Sprintf("%s|tmdb:%d|s:%d|e:%d", libraryGroup, m.TMDbID, m.SeasonNum, m.EpisodeNum)
+		return fmt.Sprintf("%s|tmdb:%d|s:%d|e:%d%s", libraryGroup, m.TMDbID, season, episode, kindKey)
 	}
 	if m.BangumiID > 0 {
-		return fmt.Sprintf("%s|bangumi:%d|s:%d|e:%d", libraryGroup, m.BangumiID, m.SeasonNum, m.EpisodeNum)
+		return fmt.Sprintf("%s|bangumi:%d|s:%d|e:%d%s", libraryGroup, m.BangumiID, season, episode, kindKey)
 	}
 	title := strings.ToLower(strings.TrimSpace(m.Title))
 	if title == "" {
@@ -110,7 +138,7 @@ func (e *EmbyService) mediaVersionKey(ctx context.Context, m *model.Media) strin
 	if title == "" {
 		return ""
 	}
-	return fmt.Sprintf("%s|title:%s|y:%d|s:%d|e:%d", libraryGroup, title, m.Year, m.SeasonNum, m.EpisodeNum)
+	return fmt.Sprintf("%s|title:%s|y:%d|s:%d|e:%d%s", libraryGroup, title, m.Year, season, episode, kindKey)
 }

 func preferMediaVersion(candidate, current model.Media) bool {
@@ -220,7 +220,7 @@ func embyLikelyEpisodicPathSQL() (string, []any) {
 	patterns := []string{
 		"%/season %/%", "%/season.%/%", "%/season-%/%", "%/season_%/%",
 		"%/s0%/%", "%/s1%/%", "%/s2%/%", "%/s3%/%", "%/s4%/%", "%/s5%/%", "%/s6%/%", "%/s7%/%", "%/s8%/%", "%/s9%/%",
-		"%/special/%", "%/specials/%", "%/sp/%", "%/ova/%", "%/oad/%", "%/extra/%", "%/extras/%",
+		"%/special/%", "%/specials/%", "%/sp/%", "%/ova/%", "%/ovas/%", "%/oad/%", "%/oads/%", "%/ovd/%", "%/ovds/%", "%/ona/%", "%/onas/%", "%/extra/%", "%/extras/%", "%/bonus/%", "%/bonuses/%", "%/omake/%", "%/picture drama/%", "%/ncop/%", "%/nced/%",
 		"%/电视剧/%", "%/剧集/%", "%/连续剧/%", "%/短剧/%", "%/国产剧/%", "%/国剧/%", "%/大陆剧/%", "%/华语剧/%", "%/国产电视剧/%", "%/大陆电视剧/%", "%/华语电视剧/%", "%/欧美剧/%", "%/欧美电视剧/%", "%/美剧/%", "%/英剧/%", "%/日韩剧/%", "%/日韩电视剧/%", "%/日剧/%", "%/韩剧/%", "%/港剧/%", "%/台剧/%", "%/港台剧/%", "%/泰剧/%",
 		"%/日番/%", "%/国漫/%", "%/番剧/%", "%/动漫/%", "%/特别篇/%", "%/特別篇/%", "%/番外/%", "%/特典/%",
 	}
@@ -243,7 +243,7 @@ func embyMediaPathLooksEpisodic(path string) bool {
 		return false
 	}
 	for _, marker := range []string{
-		"/season ", "/season.", "/season-", "/season_", "/special/", "/specials/", "/sp/", "/ova/", "/oad/", "/extra/", "/extras/",
+		"/season ", "/season.", "/season-", "/season_", "/special/", "/specials/", "/sp/", "/ova/", "/ovas/", "/oad/", "/oads/", "/ovd/", "/ovds/", "/ona/", "/onas/", "/extra/", "/extras/", "/bonus/", "/bonuses/", "/omake/", "/picture drama/", "/ncop/", "/nced/",
 		"/电视剧/", "/剧集/", "/连续剧/", "/短剧/", "/国产剧/", "/国剧/", "/大陆剧/", "/华语剧/", "/国产电视剧/", "/大陆电视剧/", "/华语电视剧/", "/欧美剧/", "/欧美电视剧/", "/美剧/", "/英剧/", "/日韩剧/", "/日韩电视剧/", "/日剧/", "/韩剧/", "/港剧/", "/台剧/", "/港台剧/", "/泰剧/",
 		"/日番/", "/国漫/", "/番剧/", "/动漫/", "/特别篇/", "/特別篇/", "/番外/", "/特典/",
 	} {
@@ -19,7 +19,7 @@ const pollutedEpisodeCleanupSettingKey = "media.polluted_episode_cleanup_v2_done

 // seasonFolderTailRE 去掉路径末尾的「季文件夹 + 文件名」,得到整剧目录(show_dir)。
 // 例: /tv/国漫/遮天 (2023)/Season 01/遮天 - S01E01.mkv → /tv/国漫/遮天 (2023)
-var seasonFolderTailRE = regexp.MustCompile(`(?i)[\\/](?:season[\s._-]*\d+|s\d{1,2}|specials?|sp|ova|oad|extra|extras|第\s*[0-9一二三四五六七八九十百零两]+\s*季|特别篇|特別篇|番外|特典)[\\/][^\\/]*$`)
+var seasonFolderTailRE = regexp.MustCompile(`(?i)[\\/](?:season[\s._-]*\d+|s\d{1,2}|specials?|sp|ovas?|oads?|ovds?|onas?|extras?|bonus(?:es)?|omake|picture[\s._-]*drama|ncop|nced|第\s*[0-9一二三四五六七八九十百零两]+\s*季|特别篇|特別篇|番外|特典|画像特典)[\\/][^\\/]*$`)

 // showDirFromEpisodePath 从单集路径推出整剧目录, 作为「同一部剧」的聚合键。
 // 若没有季文件夹, 则退而去掉文件名取其父目录。
@@ -6,6 +6,11 @@
 //	1x02          / 01x02
 //	EP02 / E02
 //	第2集         / 第02集
+//	[01]          / [001]（字幕组方括号集号，如 [UHA-WINGS][…][01][BDRIP]）
+//
+// The "1x02" pattern only matches when it is not embedded in a larger number,
+// so pixel dimensions such as 1920x1080 / 3840x2160 are never mistaken for
+// season×episode (the old pattern read those as S20E108 / S40E216).
 //
 // For bare episode markers such as "EP02", the parser also looks at parent
 // folders like "Season 02" / "S02" / "第2季" before falling back to season 1.
@@ -14,6 +19,7 @@
 package service

 import (
+	"fmt"
 	"path/filepath"
 	"regexp"
 	"strconv"
@@ -22,20 +28,32 @@ import (
 )

 var (
-	patSEnE          = regexp.MustCompile(`(?i)s(\d{1,2})e(\d{1,3})`)
-	patSEnERange     = regexp.MustCompile(`(?i)s(\d{1,2})e(\d{1,3})\s*[-~–—]\s*(?:s(\d{1,2}))?e?(\d{1,3})(?:[^0-9]|$)`)
-	patDanglingSE    = regexp.MustCompile(`(?i)(?:^|[\s._-])s\d{1,2}e(?:[\s._-]|$)`)
-	patNxE           = regexp.MustCompile(`(\d{1,2})x(\d{1,3})`)
-	patEP            = regexp.MustCompile(`(?i)(?:^|[^a-z])(?:e|ep)\.?\s*(\d{1,3})(?:[^0-9]|$)`)
-	patCN            = regexp.MustCompile(`第\s*([0-9一二三四五六七八九十百零两]+)\s*[集话話期]`)
-	patCNRange       = regexp.MustCompile(`第\s*([0-9一二三四五六七八九十百零两]+)\s*[-~–—]\s*([0-9一二三四五六七八九十百零两]+)\s*[集话話期]`)
-	patDashEpisode   = regexp.MustCompile(`[\s._-][-–—]\s*(\d{1,3})(?:\s*(?:v\d+)?)?(?:\s*[\[\(._-]|$)`)
-	patSeasonFolder  = regexp.MustCompile(`(?i)(?:^|[^a-z])(?:s|season)\.?\s*(\d{1,2})(?:[^0-9]|$)|第\s*([0-9一二三四五六七八九十百零两]+)\s*季`)
-	patSeasonOnly    = regexp.MustCompile(`(?i)(?:^|[\s._-])(?:s|season)\.?\s*\d{1,2}(?:[\s._-]|$)`)
-	patBareEpisode   = regexp.MustCompile(`^(?:第\s*)?0?(\d{1,3})(?:\s*(?:v\d+)?)?$`)
-	patSpecialSeason = regexp.MustCompile(`(?i)^(?:s0+|season[\s._-]*0+|special[\s._-]*episodes?|specials?|sp|ovas?|oads?|extras?|bonus(?:es)?|omake|番外篇?|特别篇|特別篇|特典|外传|外傳|总集篇|總集篇)$`)
+	patSEnE       = regexp.MustCompile(`(?i)s(\d{1,2})e(\d{1,3})`)
+	patSEnERange  = regexp.MustCompile(`(?i)s(\d{1,2})e(\d{1,3})\s*[-~–—]\s*(?:s(\d{1,2}))?e?(\d{1,3})(?:[^0-9]|$)`)
+	patDanglingSE = regexp.MustCompile(`(?i)(?:^|[\s._-])s\d{1,2}e(?:[\s._-]|$)`)
+	// patNxE 匹配 1x02 这类季集写法的捕获组，同时用于从标题里剔除季集残留
+	// （ReplaceAllString），因此本身不带边界守卫。解析时改用 patNxEGuarded，
+	// 避免 "1920x1080" 被从中间匹配出 "20x108" 而误判成 S20E108。
+	patNxE        = regexp.MustCompile(`(\d{1,2})x(\d{1,3})`)
+	patNxEGuarded = regexp.MustCompile(`(?:^|[^0-9])(\d{1,2})x(\d{1,3})(?:[^0-9]|$)`)
+	// patBracketEpisode 匹配字幕组常见的纯数字方括号集号，如 [01] / [012]。
+	// 限定 1-3 位，避免把 [2024] 这类年份当成集号；含字母的 [NCOP]/[1080p]
+	// 自然不匹配。
+	patBracketEpisode    = regexp.MustCompile(`\[0*(\d{1,3})\]`)
+	patEP                = regexp.MustCompile(`(?i)(?:^|[^a-z])(?:e|ep)\.?\s*(\d{1,3})(?:[^0-9]|$)`)
+	patSpecialEpisode    = regexp.MustCompile(`(?i)(?:^|[^a-z0-9])(?:ova|oad|ovd|ona|sp|special(?:[\s._-]*episode)?|extra|bonus|omake)[\s._-]*0*(\d{1,3})(?:[^0-9]|$)`)
+	patCN                = regexp.MustCompile(`第\s*([0-9一二三四五六七八九十百零两]+)\s*[集话話期]`)
+	patCNRange           = regexp.MustCompile(`第\s*([0-9一二三四五六七八九十百零两]+)\s*[-~–—]\s*([0-9一二三四五六七八九十百零两]+)\s*[集话話期]`)
+	patDashEpisode       = regexp.MustCompile(`[\s._-][-–—]\s*(\d{1,3})(?:\s*(?:v\d+)?)?(?:\s*[\[\(._-]|$)`)
+	patSeasonFolder      = regexp.MustCompile(`(?i)(?:^|[^a-z])(?:s|season)\.?\s*(\d{1,2})(?:[^0-9]|$)|第\s*([0-9一二三四五六七八九十百零两]+)\s*季`)
+	patSeasonOnly        = regexp.MustCompile(`(?i)(?:^|[\s._-])(?:s|season)\.?\s*\d{1,2}(?:[\s._-]|$)`)
+	patBareEpisode       = regexp.MustCompile(`^(?:第\s*)?0?(\d{1,3})(?:\s*(?:v\d+)?)?$`)
+	patSpecialSeason     = regexp.MustCompile(`(?i)^(?:s0+|season[\s._-]*0+|special[\s._-]*episodes?|specials?|sp|ovas?|oads?|ovds?|onas?|extras?|bonus(?:es)?|omake|picture[\s._-]*drama|ncop|nced|番外篇?|特别篇|特別篇|特典|外传|外傳|总集篇|總集篇|画像特典)$`)
+	patSeasonEpisodeZero = regexp.MustCompile(`(?i)s0*([1-9]\d?)e0+(?:[^0-9]|$)`)
 	// patCNSeason 匹配中文季/部标记，支持阿拉伯数字与中文数字（如「第二季」「第2部」）。
 	patCNSeason = regexp.MustCompile(`第\s*[0-9一二三四五六七八九十百零两]+\s*[季部]`)
+	// patResolutionDims 匹配 1920x1080 / 3840×2160 这类像素尺寸。
+	patResolutionDims = regexp.MustCompile(`(?i)(\d{3,4})\s*[x×]\s*(\d{3,4})`)
 )

 // ParseEpisode tries to extract (season, episode) from an arbitrary filename.
@@ -51,11 +69,23 @@ func ParseEpisode(path string) (season, episode int) {
 		episode = mustAtoi(m[2])
 		return
 	}
-	if m := patNxE.FindStringSubmatch(name); len(m) == 3 {
+	if m := patNxEGuarded.FindStringSubmatch(name); len(m) == 3 {
 		season = mustAtoi(m[1])
 		episode = mustAtoi(m[2])
 		return
 	}
+	if m := patBracketEpisode.FindStringSubmatch(name); len(m) == 2 {
+		var found bool
+		season, found = seasonFromParents(path)
+		if !found {
+			season = 1
+		}
+		episode = mustAtoi(m[1])
+		return
+	}
+	if m := patSpecialEpisode.FindStringSubmatch(name); len(m) >= 2 {
+		return 0, mustAtoi(m[1])
+	}
 	if m := patEP.FindStringSubmatch(name); len(m) >= 2 {
 		var found bool
 		season, found = seasonFromParents(path)
@@ -93,6 +123,98 @@ func ParseEpisode(path string) (season, episode int) {
 	return 0, 0
 }

+// resolutionEpisodeArtifact returns the bogus (season, episode) pair the legacy
+// `(\d{1,2})x(\d{1,3})` pattern would extract from a WxH pixel-dimension token
+// in path — e.g. 1920x1080 -> (20, 108), 3840x2160 -> (40, 216). Reports ok=false
+// when the name carries no such token.
+//
+// MeBox used to persist these pairs into sidecar NFOs, so on rescan the NFO
+// would inject the wrong identity back even after the parser was fixed.
+func resolutionEpisodeArtifact(path string) (season, episode int, ok bool) {
+	name := mediaSidecarBase(path)
+	if name == "" {
+		return 0, 0, false
+	}
+	dims := patResolutionDims.FindStringSubmatch(name)
+	if len(dims) < 3 {
+		return 0, 0, false
+	}
+	m := patNxE.FindStringSubmatch(dims[1] + "x" + dims[2])
+	if len(m) != 3 {
+		return 0, 0, false
+	}
+	return mustAtoi(m[1]), mustAtoi(m[2]), true
+}
+
+// dropResolutionArtifactEpisodeIdentity clears a season/episode pair (and the
+// episode title generated from it) that only exists because a resolution token
+// was once mistaken for an SxxExx marker.
+func dropResolutionArtifactEpisodeIdentity(meta *LocalMetadata, mediaPath string) {
+	if meta == nil {
+		return
+	}
+	season, episode, ok := resolutionEpisodeArtifact(mediaPath)
+	if !ok || meta.SeasonNum != season || meta.EpisodeNum != episode {
+		return
+	}
+	// 只有当文件名本身也无法权威地解析出同一季集号时才判定为伪集号。
+	// 例如 Show.S20E108.1920x1080.mkv 的 S20E108 是真实标记，必须保留。
+	if parsedSeason, parsedEpisode := ParseEpisode(mediaPath); parsedEpisode > 0 &&
+		parsedSeason == meta.SeasonNum && parsedEpisode == meta.EpisodeNum {
+		return
+	}
+	meta.SeasonNum = 0
+	meta.EpisodeNum = 0
+	if isGeneratedEpisodeTitle(meta.EpisodeTitle, episode) {
+		meta.EpisodeTitle = ""
+	}
+}
+
+// isGeneratedEpisodeTitle reports whether title is the default "第 N 集" /
+// "Episode N" form auto-written from an episode number rather than a real name.
+func isGeneratedEpisodeTitle(title string, episode int) bool {
+	title = strings.TrimSpace(title)
+	if title == "" || episode <= 0 {
+		return false
+	}
+	for _, candidate := range []string{
+		fmt.Sprintf("第 %d 集", episode),
+		fmt.Sprintf("第%d集", episode),
+		fmt.Sprintf("第 %d 话", episode),
+		fmt.Sprintf("第%d话", episode),
+		fmt.Sprintf("第 %d 話", episode),
+		fmt.Sprintf("第%d話", episode),
+		fmt.Sprintf("Episode %d", episode),
+		fmt.Sprintf("EP%d", episode),
+	} {
+		if strings.EqualFold(title, candidate) {
+			return true
+		}
+	}
+	return false
+}
+
+// onlineEpisodeIdentityFromPath converts the common anime SxxE00 convention
+// to provider-style specials. For example, S01E00 becomes S00E01 and S02E00
+// becomes S00E02. Normal episodes retain their parsed identity.
+func onlineEpisodeIdentityFromPath(path string) (season, episode int) {
+	season, episode = ParseEpisode(path)
+	if episode != 0 {
+		return season, episode
+	}
+	name := mediaSidecarBase(path)
+	if name == "" {
+		name = strings.TrimSuffix(filepath.Base(path), filepath.Ext(path))
+	}
+	if m := patSeasonEpisodeZero.FindStringSubmatch(name); len(m) == 2 {
+		specialEpisode := mustAtoi(m[1])
+		if specialEpisode > 0 {
+			return 0, specialEpisode
+		}
+	}
+	return season, episode
+}
+
 type episodeRef struct {
 	Season  int
 	Episode int
@@ -29,7 +29,20 @@ func TestParseEpisode(t *testing.T) {
 		{`剧集/Specials/剧集 - 02.mkv`, 0, 2},
 		{`剧集/特别篇/03.mkv`, 0, 3},
 		{`剧集/剧集 - S00E04.mkv`, 0, 4},
+		{`动漫/摇曳露营/OVA/Season 3 [OVA01 [1080p].mkv`, 0, 1},
+		{`动漫/示例/OAD/示例.OAD02.mkv`, 0, 2},
+		{`动漫/示例/OVD/示例-OVD03.mkv`, 0, 3},
+		{`动漫/示例/ONA/示例_ONA04.mkv`, 0, 4},
 		{"Movie.2020.1080p.mkv", 0, 0},
+		// 分辨率不能被当成季集号：1920x1080 曾匹配出 20x108。
+		{"Movie.2020.1920x1080.mkv", 0, 0},
+		{"1920x1080.mkv", 0, 0},
+		{"[Group][Show][02][3840x2160].mkv", 1, 2},
+		// 字幕组方括号集号。
+		{"[UHA-WINGS][Peter Grill to Kenja no Jikan][01][BDRIP 1920x1080 HEVC-YUV420P10 FLAC].strm", 1, 1},
+		{"[UHA-WINGS][Peter Grill to Kenja no Jikan][12][BDRIP 1920x1080 HEVC-YUV420P10 FLAC].strm", 1, 12},
+		// 方括号里的年份/分辨率不是集号。
+		{"[Group][Show][2024][1080p].mkv", 0, 0},
 	}
 	for _, tc := range cases {
 		t.Run(tc.in, func(t *testing.T) {
@@ -68,3 +81,74 @@ func TestEpisodeRefsFromTitleParsesRanges(t *testing.T) {
 		}
 	}
 }
+
+func TestOnlineEpisodeIdentityFromPathMapsAnimeEpisodeZeroToSpecials(t *testing.T) {
+	cases := []struct {
+		path        string
+		wantSeason  int
+		wantEpisode int
+	}{
+		{`动漫/路人女主/Season 1/S01E00 - 爱与青春的杀必死回.mkv`, 0, 1},
+		{`动漫/路人女主/Season 2/S02E00 - 恋爱与纯情的杀必死回.mkv`, 0, 2},
+		{`动漫/路人女主/Season 2/S02E03 - 初稿与二稿.mkv`, 2, 3},
+		{`动漫/路人女主/Specials/S00E04.mkv`, 0, 4},
+	}
+	for _, tc := range cases {
+		season, episode := onlineEpisodeIdentityFromPath(tc.path)
+		if season != tc.wantSeason || episode != tc.wantEpisode {
+			t.Errorf("onlineEpisodeIdentityFromPath(%q) = (%d, %d), want (%d, %d)",
+				tc.path, season, episode, tc.wantSeason, tc.wantEpisode)
+		}
+	}
+}
+
+func TestResolutionEpisodeArtifact(t *testing.T) {
+	cases := []struct {
+		path        string
+		wantSeason  int
+		wantEpisode int
+		wantOK      bool
+	}{
+		{"[UHA-WINGS][Peter Grill to Kenja no Jikan][01][BDRIP 1920x1080 HEVC-YUV420P10 FLAC].strm", 20, 108, true},
+		{"今永纱奈/20170601000150_2,00x_3840x2160_amq-13.strm", 40, 216, true},
+		{"Movie.2020.1080p.mkv", 0, 0, false},
+		{"Show.S01E02.mkv", 0, 0, false},
+	}
+	for _, tc := range cases {
+		season, episode, ok := resolutionEpisodeArtifact(tc.path)
+		if season != tc.wantSeason || episode != tc.wantEpisode || ok != tc.wantOK {
+			t.Errorf("resolutionEpisodeArtifact(%q) = (%d, %d, %v), want (%d, %d, %v)",
+				tc.path, season, episode, ok, tc.wantSeason, tc.wantEpisode, tc.wantOK)
+		}
+	}
+}
+
+func TestDropResolutionArtifactEpisodeIdentity(t *testing.T) {
+	// 分辨率伪集号被剔除，并从生成的「第 N 集」标题里清掉。
+	polluted := &LocalMetadata{SeasonNum: 20, EpisodeNum: 108, EpisodeTitle: "第 108 集"}
+	dropResolutionArtifactEpisodeIdentity(polluted, "[G][Show][01][BDRIP 1920x1080 x].strm")
+	if polluted.SeasonNum != 0 || polluted.EpisodeNum != 0 || polluted.EpisodeTitle != "" {
+		t.Fatalf("resolution artifact not dropped: %+v", polluted)
+	}
+
+	// 真实单集号不受影响。
+	real := &LocalMetadata{SeasonNum: 1, EpisodeNum: 3, EpisodeTitle: "本地第三集"}
+	dropResolutionArtifactEpisodeIdentity(real, "Show/S01E03 1920x1080.mkv")
+	if real.SeasonNum != 1 || real.EpisodeNum != 3 || real.EpisodeTitle != "本地第三集" {
+		t.Fatalf("real episode identity was modified: %+v", real)
+	}
+
+	// 名称里没有分辨率时不改动任何值。
+	plain := &LocalMetadata{SeasonNum: 20, EpisodeNum: 108}
+	dropResolutionArtifactEpisodeIdentity(plain, "Show/S20E108.mkv")
+	if plain.SeasonNum != 20 || plain.EpisodeNum != 108 {
+		t.Fatalf("unrelated identity was cleared: %+v", plain)
+	}
+
+	// 文件名里 S20E108 是真实标记时，即使同时含分辨率也必须保留。
+	legit := &LocalMetadata{SeasonNum: 20, EpisodeNum: 108}
+	dropResolutionArtifactEpisodeIdentity(legit, "Show/Show.S20E108.1920x1080.mkv")
+	if legit.SeasonNum != 20 || legit.EpisodeNum != 108 {
+		t.Fatalf("legitimate S20E108 identity was cleared: %+v", legit)
+	}
+}
@@ -78,6 +78,13 @@ func pathHintMetadata(raw string, seriesLike bool) (*LocalMetadata, mediaExterna
 	title, year := "", 0
 	if seriesLike {
 		title, year = CleanQuery(source)
+	} else if patTheatricalTitle.MatchString(raw) || patTheatricalFolder.MatchString(raw) {
+		base := pathBaseSlash(raw)
+		stem := mediaFileStem(base)
+		if stem == "" {
+			stem = strings.TrimSuffix(base, filepath.Ext(base))
+		}
+		title, year = CleanQuery(stem)
 	} else {
 		title, year = cloudSeriesTitleFromMediaPath(source)
 		if title == "" {
@@ -73,7 +73,7 @@ func isLocalImagePath(raw string) bool {
 	}
 	ext := strings.ToLower(filepath.Ext(raw))
 	switch ext {
-	case ".jpg", ".jpeg", ".png", ".webp", ".gif", ".bmp", ".tbn":
+	case ".jpg", ".jpeg", ".png", ".webp", ".gif", ".bmp", ".tbn", ".img":
 		return true
 	default:
 		return false
@@ -55,26 +55,32 @@ func (p *ImageProxy) RemoveFailed(raw string) error {
 // Serve writes the requested image to w. Caller is expected to validate
 // the JWT before invoking it.
 func (p *ImageProxy) Serve(ctx context.Context, w http.ResponseWriter, r *http.Request, raw string) error {
+	// Emby 客户端用 maxWidth / maxHeight / quality 请求缩略图。不解析这些
+	// 参数就会把多兆字节的原图发给客户端，移动端往往在下载中途超时。
+	opts := parseImageResizeOptions(r)
 	if isLocalImagePath(raw) {
-		return p.serveLocalImage(w, r, raw)
+		return p.serveLocalImage(w, r, raw, opts)
 	}
-	return p.serveRemoteImage(ctx, w, r, raw)
+	return p.serveRemoteImage(ctx, w, r, raw, opts)
 }

-func (p *ImageProxy) serveLocalImage(w http.ResponseWriter, r *http.Request, raw string) error {
+func (p *ImageProxy) serveLocalImage(w http.ResponseWriter, r *http.Request, raw string, opts imageResizeOptions) error {
 	path := filepath.Clean(raw)
 	abs, err := filepath.Abs(path)
 	if err != nil || !p.isAllowedLocalPath(abs) {
 		servePlaceholder(w)
 		return nil
 	}
+	if opts.active() && p.serveResizedFromFile(w, r, abs, opts) {
+		return nil
+	}
 	if !serveImageFile(w, r, filepath.Base(abs), abs, imageBrowserCacheControl) {
 		servePlaceholder(w)
 	}
 	return nil
 }

-func (p *ImageProxy) serveRemoteImage(ctx context.Context, w http.ResponseWriter, r *http.Request, raw string) error {
+func (p *ImageProxy) serveRemoteImage(ctx context.Context, w http.ResponseWriter, r *http.Request, raw string, opts imageResizeOptions) error {
 	u, err := p.validateURL(raw)
 	if err != nil {
 		return err
@@ -83,14 +89,14 @@ func (p *ImageProxy) serveRemoteImage(ctx context.Context, w http.ResponseWriter
 	key, cachePath, failPath := p.remoteImageCachePathsForValidated(raw)
 	forceRefresh := r.URL.Query().Get("refresh") != ""
 	p.removeUnusableImageCache(cachePath, failPath)
-	if !forceRefresh && serveCachedImageFile(w, r, key, cachePath) {
+	if !forceRefresh && p.serveCachedImage(w, r, key, cachePath, opts) {
 		return nil
 	}
 	// No negative caching: a previously failed fetch is retried on every
 	// subsequent request, so the image recovers as soon as upstream does.
 	data, ctype, contentLength, err := p.fetchAndCacheRemoteImage(ctx, raw, host, cachePath, failPath)
 	if err != nil {
-		if forceRefresh && serveCachedImageFile(w, r, key, cachePath) {
+		if forceRefresh && p.serveCachedImage(w, r, key, cachePath, opts) {
 			return nil
 		}
 		if errors.Is(err, errImageProxyRequestSetup) {
@@ -100,6 +106,10 @@ func (p *ImageProxy) serveRemoteImage(ctx context.Context, w http.ResponseWriter
 		}
 		return nil
 	}
+	// 上游原图已落盘，缩放结果复用同一条缓存流水线。
+	if opts.active() && p.serveResizedFromFile(w, r, cachePath, opts) {
+		return nil
+	}
 	w.Header().Set("Content-Type", ctype)
 	if contentLength != "" {
 		w.Header().Set("Content-Length", contentLength)
@@ -114,6 +124,15 @@ func (p *ImageProxy) serveRemoteImage(ctx context.Context, w http.ResponseWriter
 	return nil
 }

+// serveCachedImage 在远程原图已缓存时提供服务。请求带缩放参数时优先命中
+// 缩放缓存，未命中则从已缓存的原图生成一份；缩放不可用时退回原图直出。
+func (p *ImageProxy) serveCachedImage(w http.ResponseWriter, r *http.Request, key, cachePath string, opts imageResizeOptions) bool {
+	if opts.active() && p.serveResizedFromFile(w, r, cachePath, opts) {
+		return true
+	}
+	return serveCachedImageFile(w, r, key, cachePath)
+}
+
 func (p *ImageProxy) removeUnusableImageCache(cachePath, failPath string) {
 	data, err := os.ReadFile(cachePath) // #nosec G304 -- cachePath is SHA-derived under cacheDir.
 	if err != nil {
@@ -13,6 +13,12 @@ import (
 	"github.com/truewhile/MeBox/internal/config"
 )

+func TestIsLocalImagePathAcceptsLegacyImgSidecar(t *testing.T) {
+	if !isLocalImagePath(filepath.Join(t.TempDir(), "movie-poster.img")) {
+		t.Fatal("legacy .img sidecar should remain displayable")
+	}
+}
+
 var testJPEG = []byte{
 	0xff, 0xd8, 0xff, 0xe0, 0x00, 0x10, 'J', 'F', 'I', 'F',
 	0x00, 0x01, 0x01, 0x00, 0x00, 0x01, 0x00, 0x01,
@@ -117,12 +123,12 @@ func TestIsPrivateHost(t *testing.T) {
 	// Hostnames must NOT be blocked even though GFW DNS poisoning may resolve
 	// them to private/loopback IPs — blocking them broke legitimate posters.
 	allowed := []string{"image.tmdb.org", "lain.bgm.tv", "example.com", "8.8.8.8"}
-		for _, h := range allowed {
-			if isPrivateHost(h) {
-				t.Errorf("isPrivateHost(%q) = true, want false", h)
-			}
+	for _, h := range allowed {
+		if isPrivateHost(h) {
+			t.Errorf("isPrivateHost(%q) = true, want false", h)
 		}
 	}
+}

 func TestImageProxyAllowedRemoteHostBypassesPrivateCheck(t *testing.T) {
 	proxy := NewImageProxy(&config.Config{Cache: config.CacheConfig{CacheDir: filepath.Join(t.TempDir(), "cache")}}, zap.NewNop())
@@ -0,0 +1,269 @@
+package service
+
+import (
+	"bytes"
+	"crypto/sha256"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"image"
+	"image/jpeg"
+	"image/png"
+	"math"
+	"net/http"
+	"net/url"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+
+	"go.uber.org/zap"
+
+	_ "golang.org/x/image/bmp" // register BMP decoder for .bmp/.tbn sidecar art
+	"golang.org/x/image/draw"
+	_ "golang.org/x/image/webp" // register WebP decoder for poster art
+)
+
+const (
+	imageResizeDefaultQuality = 90
+	imageResizeMinQuality     = 1
+	imageResizeMaxQuality     = 100
+
+	// imageResizeMaxSourcePixels 限制参与缩放的原图像素总量。解码一张
+	// N 像素的图在内存中约需 4N 字节；没有上限时，一张异常的超大图
+	// 就能在多张并发缩略图请求下打爆小内存主机。超过该上限时直接
+	// 回退为原图直出，宁可不缩放也不冒 OOM 风险。
+	imageResizeMaxSourcePixels = 30_000_000
+
+	// imageResizeCacheSubdir 存放缩放结果，与远程原图缓存分开放，
+	// 便于单独清理且不与原始字节流缓存互相覆盖。
+	imageResizeCacheSubdir = "resized"
+)
+
+// imageResizeOptions 描述客户端通过图片 URL 查询参数请求的目标尺寸。
+// Emby / Infuse / Yamby / RodelPlayer 等客户端普遍使用
+// maxWidth / maxHeight / quality，也有客户端使用 width / height。
+type imageResizeOptions struct {
+	MaxWidth  int
+	MaxHeight int
+	Quality   int
+}
+
+// active 报告是否需要缩放。没有任何尺寸参数时返回 false，调用方保持
+// 原有的原图直出路径（支持 Range / ETag，行为完全不变）。
+func (o imageResizeOptions) active() bool {
+	return o.MaxWidth > 0 || o.MaxHeight > 0
+}
+
+// encodingQuality 返回生效的 JPEG 编码质量，缺省 90。
+func (o imageResizeOptions) encodingQuality() int {
+	q := o.Quality
+	if q < imageResizeMinQuality || q > imageResizeMaxQuality {
+		return imageResizeDefaultQuality
+	}
+	return q
+}
+
+// parseImageResizeOptions 从请求查询串解析缩放参数。Emby 客户端对参数名
+// 大小写不敏感，这里逐项做 EqualFold 匹配。
+func parseImageResizeOptions(r *http.Request) imageResizeOptions {
+	if r == nil || r.URL == nil {
+		return imageResizeOptions{}
+	}
+	q := r.URL.Query()
+	return imageResizeOptions{
+		MaxWidth:  firstPositiveQueryInt(q, "maxWidth", "width"),
+		MaxHeight: firstPositiveQueryInt(q, "maxHeight", "height"),
+		Quality:   firstPositiveQueryInt(q, "quality"),
+	}
+}
+
+// firstPositiveQueryInt 按顺序返回第一个能解析为正数的查询参数。
+func firstPositiveQueryInt(q url.Values, names ...string) int {
+	for _, name := range names {
+		for key, values := range q {
+			if !strings.EqualFold(key, name) {
+				continue
+			}
+			for _, raw := range values {
+				raw = strings.TrimSpace(raw)
+				if n, err := strconv.Atoi(raw); err == nil && n > 0 {
+					return n
+				}
+				// Emby 客户端偶发传入 "400.0" 这类浮点字面量。
+				if f, err := strconv.ParseFloat(raw, 64); err == nil && f > 0 {
+					return int(f)
+				}
+			}
+		}
+	}
+	return 0
+}
+
+// fitSize 按等比缩放把 srcW x srcH 装进 maxW/maxH 边界，且从不放大。
+func fitSize(srcW, srcH, maxW, maxH int) (int, int) {
+	if srcW <= 0 || srcH <= 0 {
+		return srcW, srcH
+	}
+	scale := 1.0
+	if maxW > 0 && srcW > maxW {
+		scale = math.Min(scale, float64(maxW)/float64(srcW))
+	}
+	if maxH > 0 && srcH > maxH {
+		scale = math.Min(scale, float64(maxH)/float64(srcH))
+	}
+	if scale >= 1 {
+		return srcW, srcH
+	}
+	dstW := int(math.Round(float64(srcW) * scale))
+	dstH := int(math.Round(float64(srcH) * scale))
+	if dstW < 1 {
+		dstW = 1
+	}
+	if dstH < 1 {
+		dstH = 1
+	}
+	return dstW, dstH
+}
+
+var errImageResizeTooLarge = errors.New("image source exceeds resize pixel budget")
+
+// resizeImageData 按选项缩放图片并重新编码。返回 unchanged=true 表示原图
+// 本身已满足目标尺寸，调用方应直接输出原始字节（不重复编码、不损失质量）。
+func resizeImageData(data []byte, o imageResizeOptions) (out []byte, ctype string, unchanged bool, err error) {
+	if len(data) == 0 || !o.active() {
+		return data, detectContentType(data), true, nil
+	}
+	cfg, format, err := image.DecodeConfig(bytes.NewReader(data))
+	if err != nil {
+		return nil, "", false, err
+	}
+	if cfg.Width <= 0 || cfg.Height <= 0 {
+		return nil, "", false, errors.New("invalid image dimensions")
+	}
+	// 先用 DecodeConfig 判断是否需要解码整图：图已够小就零成本返回原字节。
+	dstW, dstH := fitSize(cfg.Width, cfg.Height, o.MaxWidth, o.MaxHeight)
+	if dstW == cfg.Width && dstH == cfg.Height {
+		return data, detectContentType(data), true, nil
+	}
+	if int64(cfg.Width)*int64(cfg.Height) > imageResizeMaxSourcePixels {
+		return nil, "", false, errImageResizeTooLarge
+	}
+
+	src, _, err := image.Decode(bytes.NewReader(data))
+	if err != nil {
+		return nil, "", false, err
+	}
+	dst := image.NewRGBA(image.Rect(0, 0, dstW, dstH))
+	draw.CatmullRom.Scale(dst, dst.Bounds(), src, src.Bounds(), draw.Src, nil)
+
+	// 只有可能带透明的源格式才需要逐像素确认，避免 JPEG 的无谓遍历。
+	// 写实海报的 PNG 通常比等价 JPEG 大一个数量级，因此在确认不含透明
+	// 像素后统一转 JPEG —— 客户端本来就只按缩略图显示。
+	if strings.EqualFold(format, "png") && !isOpaqueImage(dst) {
+		var buf bytes.Buffer
+		if err := png.Encode(&buf, dst); err != nil {
+			return nil, "", false, err
+		}
+		return buf.Bytes(), "image/png", false, nil
+	}
+
+	var buf bytes.Buffer
+	if err := jpeg.Encode(&buf, dst, &jpeg.Options{Quality: o.encodingQuality()}); err != nil {
+		return nil, "", false, err
+	}
+	return buf.Bytes(), "image/jpeg", false, nil
+}
+
+// isOpaqueImage 逐像素确认图像不含透明像素。
+func isOpaqueImage(img *image.RGBA) bool {
+	bounds := img.Bounds()
+	for y := bounds.Min.Y; y < bounds.Max.Y; y++ {
+		for x := bounds.Min.X; x < bounds.Max.X; x++ {
+			if _, _, _, a := img.At(x, y).RGBA(); a != 0xffff {
+				return false
+			}
+		}
+	}
+	return true
+}
+
+// resizeCacheKey 生成缩放结果的缓存键，覆盖源文件身份（路径 + 大小 +
+// 修改时间）与全部影响输出的参数，源文件被替换后不会命中陈旧缩略图。
+func (o imageResizeOptions) resizeCacheKey(sourceID string, stat os.FileInfo) string {
+	h := sha256.New()
+	_, _ = fmt.Fprintf(h, "v1|%s|%dx%d|q%d", sourceID, o.MaxWidth, o.MaxHeight, o.encodingQuality())
+	if stat != nil {
+		_, _ = fmt.Fprintf(h, "|%d|%d", stat.Size(), stat.ModTime().UnixNano())
+	}
+	return hex.EncodeToString(h.Sum(nil))
+}
+
+func (p *ImageProxy) resizeCachePath(key string) string {
+	return filepath.Join(p.cacheDir, imageResizeCacheSubdir, key+".img")
+}
+
+// serveResizedFromFile 从 srcPath 读取图片，按选项缩放后写出，并把结果缓存
+// 到磁盘以免每次请求都重新解码。原图已满足目标尺寸时直接输出原文件。
+// 返回 false 表示缩放不可用，调用方应回退到原图直出。
+func (p *ImageProxy) serveResizedFromFile(w http.ResponseWriter, r *http.Request, srcPath string, o imageResizeOptions) bool {
+	stat, err := os.Stat(srcPath)
+	if err != nil || stat.IsDir() || stat.Size() <= 0 {
+		return false
+	}
+	data, err := os.ReadFile(srcPath) // #nosec G304 -- srcPath comes from an allowed local path or a SHA-derived cache path.
+	if err != nil {
+		return false
+	}
+	out, ctype, unchanged, err := resizeImageData(data, o)
+	if err != nil {
+		return false
+	}
+	if unchanged {
+		// 原图已经在目标尺寸内：直接流式输出，保留 ETag / Range 语义。
+		return serveImageFile(w, r, filepath.Base(srcPath), srcPath, imageBrowserCacheControl)
+	}
+
+	key := o.resizeCacheKey(srcPath, stat)
+	cachePath := p.resizeCachePath(key)
+	if serveCachedImageFile(w, r, key, cachePath) {
+		return true
+	}
+	p.writeResizeCache(cachePath, out)
+	w.Header().Set("Content-Type", ctype)
+	w.Header().Set("Cache-Control", imageBrowserCacheControl)
+	http.ServeContent(w, r, key, stat.ModTime(), bytes.NewReader(out))
+	return true
+}
+
+// writeResizeCache 原子写入缩放结果；失败只记日志，不影响本次响应。
+func (p *ImageProxy) writeResizeCache(cachePath string, data []byte) {
+	dir := filepath.Dir(cachePath)
+	if err := os.MkdirAll(dir, 0o750); err != nil {
+		p.warn("imageproxy: resize cache mkdir failed", err)
+		return
+	}
+	p.mu.Lock()
+	defer p.mu.Unlock()
+	tmp, err := os.CreateTemp(dir, "resized-*.tmp")
+	if err != nil {
+		p.warn("imageproxy: resize cache temp failed", err)
+		return
+	}
+	if _, err := tmp.Write(data); err != nil {
+		_ = tmp.Close()
+		_ = os.Remove(tmp.Name())
+		return
+	}
+	_ = tmp.Close()
+	if err := os.Rename(tmp.Name(), cachePath); err != nil {
+		_ = os.Remove(tmp.Name())
+	}
+}
+
+func (p *ImageProxy) warn(msg string, err error) {
+	if p == nil || p.log == nil {
+		return
+	}
+	p.log.Warn(msg, zap.Error(err))
+}
@@ -0,0 +1,232 @@
+package service
+
+import (
+	"bytes"
+	"image"
+	"image/color"
+	"image/png"
+	"net/http/httptest"
+	"os"
+	"testing"
+)
+
+// encodeTestPNG 生成一张结构规则、易于压缩的测试用 PNG。
+func encodeTestPNG(t *testing.T, w, h int, alpha uint8) []byte {
+	t.Helper()
+	img := image.NewRGBA(image.Rect(0, 0, w, h))
+	for y := 0; y < h; y++ {
+		for x := 0; x < w; x++ {
+			img.Set(x, y, color.RGBA{R: uint8(x % 16 * 16), G: uint8(y % 16 * 16), B: 200, A: alpha})
+		}
+	}
+	var buf bytes.Buffer
+	if err := png.Encode(&buf, img); err != nil {
+		t.Fatalf("encode test png: %v", err)
+	}
+	return buf.Bytes()
+}
+
+func TestParseImageResizeOptionsReadsEmbyParams(t *testing.T) {
+	r := httptest.NewRequest("GET", "/emby/Items/x/Images/Primary?maxWidth=400&maxHeight=600&quality=80", nil)
+	o := parseImageResizeOptions(r)
+	if o.MaxWidth != 400 || o.MaxHeight != 600 || o.Quality != 80 {
+		t.Fatalf("unexpected options: %+v", o)
+	}
+	if !o.active() {
+		t.Fatal("expected options to be active")
+	}
+}
+
+func TestParseImageResizeOptionsIsCaseInsensitive(t *testing.T) {
+	r := httptest.NewRequest("GET", "/x?MaxWidth=250&QUALITY=70", nil)
+	o := parseImageResizeOptions(r)
+	if o.MaxWidth != 250 {
+		t.Fatalf("MaxWidth = %d, want 250", o.MaxWidth)
+	}
+	if o.Quality != 70 {
+		t.Fatalf("Quality = %d, want 70", o.Quality)
+	}
+}
+
+func TestParseImageResizeOptionsAcceptsWidthAndHeightAliases(t *testing.T) {
+	r := httptest.NewRequest("GET", "/x?width=320&height=180", nil)
+	o := parseImageResizeOptions(r)
+	if o.MaxWidth != 320 || o.MaxHeight != 180 {
+		t.Fatalf("unexpected options: %+v", o)
+	}
+}
+
+func TestParseImageResizeOptionsInactiveWithoutDimensions(t *testing.T) {
+	r := httptest.NewRequest("GET", "/x?quality=90&tag=abc", nil)
+	o := parseImageResizeOptions(r)
+	if o.active() {
+		t.Fatalf("expected inactive options, got %+v", o)
+	}
+}
+
+func TestFitSizePreservesAspectAndNeverUpscales(t *testing.T) {
+	cases := []struct {
+		name                   string
+		srcW, srcH, maxW, maxH int
+		wantW, wantH           int
+	}{
+		{"max-width-only", 529, 911, 400, 0, 400, 689},
+		{"max-height-only", 529, 911, 0, 500, 290, 500},
+		{"never-upscales", 529, 911, 2000, 2000, 529, 911},
+		{"both-bounds", 1000, 500, 400, 400, 400, 200},
+		{"exact-size", 400, 600, 400, 600, 400, 600},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			gotW, gotH := fitSize(tc.srcW, tc.srcH, tc.maxW, tc.maxH)
+			if gotW != tc.wantW || gotH != tc.wantH {
+				t.Fatalf("fitSize(%d,%d,%d,%d) = %dx%d, want %dx%d",
+					tc.srcW, tc.srcH, tc.maxW, tc.maxH, gotW, gotH, tc.wantW, tc.wantH)
+			}
+		})
+	}
+}
+
+func TestResizeImageDataScalesDownAndReencodesAsJPEG(t *testing.T) {
+	data := encodeTestPNG(t, 529, 911, 255)
+	out, ctype, unchanged, err := resizeImageData(data, imageResizeOptions{MaxWidth: 400, Quality: 90})
+	if err != nil {
+		t.Fatalf("resize: %v", err)
+	}
+	if unchanged {
+		t.Fatal("expected the image to be resized")
+	}
+	if ctype != "image/jpeg" {
+		t.Fatalf("content type = %q, want image/jpeg", ctype)
+	}
+	cfg, format, err := image.DecodeConfig(bytes.NewReader(out))
+	if err != nil {
+		t.Fatalf("decode resized: %v", err)
+	}
+	if cfg.Width != 400 || cfg.Height != 689 {
+		t.Fatalf("resized to %dx%d, want 400x689", cfg.Width, cfg.Height)
+	}
+	if format != "jpeg" {
+		t.Fatalf("format = %q, want jpeg", format)
+	}
+	// 这里只断言"重新编码生效且输出可解码"。合成图的压缩率不代表真实海报
+	// （规则色块 PNG 极小，而 JPEG 压规则图案反而更大）；真实海报的体积
+	// 收益在服务器上用线上素材实测。
+	if len(out) == 0 {
+		t.Fatal("expected a non-empty resized image")
+	}
+	if len(out) == len(data) {
+		t.Fatal("expected the resized image to be re-encoded")
+	}
+}
+
+func TestResizeImageDataLeavesImagesWithinBoundsUntouched(t *testing.T) {
+	data := encodeTestPNG(t, 200, 300, 255)
+	out, _, unchanged, err := resizeImageData(data, imageResizeOptions{MaxWidth: 400, MaxHeight: 600})
+	if err != nil {
+		t.Fatalf("resize: %v", err)
+	}
+	if !unchanged {
+		t.Fatal("expected an image already within bounds to be returned unchanged")
+	}
+	if !bytes.Equal(out, data) {
+		t.Fatal("expected the original bytes to be returned verbatim")
+	}
+}
+
+func TestResizeImageDataKeepsTransparencyAsPNG(t *testing.T) {
+	data := encodeTestPNG(t, 600, 900, 128)
+	out, ctype, unchanged, err := resizeImageData(data, imageResizeOptions{MaxWidth: 300, Quality: 90})
+	if err != nil {
+		t.Fatalf("resize: %v", err)
+	}
+	if unchanged {
+		t.Fatal("expected the image to be resized")
+	}
+	if ctype != "image/png" {
+		t.Fatalf("content type = %q, want image/png so transparency is preserved", ctype)
+	}
+	cfg, format, err := image.DecodeConfig(bytes.NewReader(out))
+	if err != nil {
+		t.Fatalf("decode resized: %v", err)
+	}
+	if format != "png" {
+		t.Fatalf("format = %q, want png", format)
+	}
+	if cfg.Width != 300 || cfg.Height != 450 {
+		t.Fatalf("resized to %dx%d, want 300x450", cfg.Width, cfg.Height)
+	}
+}
+
+func TestImageResizeOptionsCacheKeyVariesWithParametersAndSource(t *testing.T) {
+	stat, err := os.Stat("image_resize_test.go")
+	if err != nil {
+		t.Fatalf("stat: %v", err)
+	}
+	base := imageResizeOptions{MaxWidth: 400, Quality: 90}
+	if base.resizeCacheKey("a", stat) != base.resizeCacheKey("a", stat) {
+		t.Fatal("cache key must be stable for identical inputs")
+	}
+	if base.resizeCacheKey("a", stat) == base.resizeCacheKey("b", stat) {
+		t.Fatal("cache key must differ between sources")
+	}
+	if base.resizeCacheKey("a", stat) == (imageResizeOptions{MaxWidth: 200, Quality: 90}).resizeCacheKey("a", stat) {
+		t.Fatal("cache key must differ when max width changes")
+	}
+	if base.resizeCacheKey("a", stat) == (imageResizeOptions{MaxWidth: 400, Quality: 60}).resizeCacheKey("a", stat) {
+		t.Fatal("cache key must differ when quality changes")
+	}
+}
+
+func TestImageResizeOptionsEncodingQualityFallsBackToDefault(t *testing.T) {
+	for _, tc := range []struct {
+		in   int
+		want int
+	}{
+		{0, imageResizeDefaultQuality},
+		{-5, imageResizeDefaultQuality},
+		{500, imageResizeDefaultQuality},
+		{1, 1},
+		{100, 100},
+		{75, 75},
+	} {
+		if got := (imageResizeOptions{Quality: tc.in}).encodingQuality(); got != tc.want {
+			t.Fatalf("encodingQuality(%d) = %d, want %d", tc.in, got, tc.want)
+		}
+	}
+}
+
+func TestServeResizedFromFileCachesScaledResult(t *testing.T) {
+	dir := t.TempDir()
+	mediaDir := dir + string(os.PathSeparator) + "media"
+	if err := os.MkdirAll(mediaDir, 0o755); err != nil {
+		t.Fatalf("mkdir: %v", err)
+	}
+	src := mediaDir + string(os.PathSeparator) + "poster.png"
+	if err := os.WriteFile(src, encodeTestPNG(t, 529, 911, 255), 0o644); err != nil {
+		t.Fatalf("write source: %v", err)
+	}
+
+	proxy := &ImageProxy{cacheDir: dir + string(os.PathSeparator) + "cache"}
+	opts := imageResizeOptions{MaxWidth: 400, Quality: 90}
+
+	first := httptest.NewRecorder()
+	if !proxy.serveResizedFromFile(first, httptest.NewRequest("GET", "/x?maxWidth=400", nil), src, opts) {
+		t.Fatal("expected serveResizedFromFile to handle the request")
+	}
+	if got := first.Header().Get("Content-Type"); got != "image/jpeg" {
+		t.Fatalf("content type = %q, want image/jpeg", got)
+	}
+
+	// 第二次请求应命中磁盘缓存，返回与首次完全相同的字节。
+	second := httptest.NewRecorder()
+	if !proxy.serveResizedFromFile(second, httptest.NewRequest("GET", "/x?maxWidth=400", nil), src, opts) {
+		t.Fatal("expected second call to be served")
+	}
+	if !bytes.Equal(first.Body.Bytes(), second.Body.Bytes()) {
+		t.Fatal("expected the cached scaled image to be reused")
+	}
+	if len(first.Body.Bytes()) == 0 {
+		t.Fatal("expected a non-empty body")
+	}
+}
@@ -74,12 +74,15 @@ func localPosterCandidates(mediaPath string) []string {
 		add(base + "-cover")
 		add(base + ".cover")
 		add(base)
+	}
+	for _, name := range []string{"poster", "folder", "cover", "movie", "show"} {
+		add(name)
+	}
+	for _, base := range mediaSidecarBaseVariants(mediaPath) {
 		add(base + "-thumb")
 		add(base + ".thumb")
 	}
-	for _, name := range []string{"poster", "folder", "cover", "movie", "show", "thumb"} {
-		add(name)
-	}
+	add("thumb")
 	return append(adultArtworkNameCandidates(mediaPath, "poster"), names...)
 }

@@ -155,7 +158,7 @@ func firstExistingImage(dir string, names ...string) string {
 		return ""
 	}
 	for _, name := range names {
-		for _, ext := range []string{".jpg", ".jpeg", ".png", ".webp", ".gif", ".bmp", ".tbn"} {
+		for _, ext := range []string{".jpg", ".jpeg", ".png", ".webp", ".gif", ".bmp", ".tbn", ".img"} {
 			path := filepath.Join(dir, name+ext)
 			if fileExists(path) {
 				return filepath.Clean(path)
@@ -218,7 +221,7 @@ func firstExistingPosterImage(dir string, names ...string) string {
 		if isRejectedPosterName(name) {
 			continue
 		}
-		for _, ext := range []string{".jpg", ".jpeg", ".png", ".webp", ".gif", ".bmp", ".tbn"} {
+		for _, ext := range []string{".jpg", ".jpeg", ".png", ".webp", ".gif", ".bmp", ".tbn", ".img"} {
 			path := filepath.Join(dir, name+ext)
 			if fileExists(path) && likelyPosterImage(path) {
 				return filepath.Clean(path)
@@ -237,7 +240,7 @@ func firstAdultLooseImage(dir, kind string) string {
 	fallback := []string{}
 	for _, path := range matches {
 		ext := strings.ToLower(filepath.Ext(path))
-		if ext != ".jpg" && ext != ".jpeg" && ext != ".png" && ext != ".webp" && ext != ".gif" && ext != ".bmp" && ext != ".tbn" {
+		if ext != ".jpg" && ext != ".jpeg" && ext != ".png" && ext != ".webp" && ext != ".gif" && ext != ".bmp" && ext != ".tbn" && ext != ".img" {
 			continue
 		}
 		name := strings.ToLower(strings.TrimSuffix(filepath.Base(path), ext))
@@ -23,6 +23,9 @@ func ReadLocalMetadata(mediaPath, libraryRoot string, seriesLike bool) (*LocalMe
 	}
 	meta := metadataFromDoc(doc, filepath.Dir(path), false)
 	mergeArtworkMetadata(meta, mediaPath, filepath.Dir(path))
+	// A sidecar written while resolution tokens were misread as SxxExx must not
+	// reintroduce the bogus season/episode on rescan.
+	dropResolutionArtifactEpisodeIdentity(meta, mediaPath)
 	return meta, nil
 }

@@ -116,6 +119,9 @@ func readSeriesMetadata(mediaPath, libraryRoot string) (*LocalMetadata, error) {
 	} else {
 		mergeArtworkMetadata(meta, mediaPath, showBaseDir)
 	}
+	// A sidecar written while resolution tokens were misread as SxxExx must not
+	// reintroduce the bogus season/episode on rescan.
+	dropResolutionArtifactEpisodeIdentity(meta, mediaPath)
 	return meta, nil
 }

@@ -6,6 +6,48 @@ import (
 	"testing"
 )

+func TestReadLocalMetadataDropsResolutionArtifactEpisode(t *testing.T) {
+	// 刮削曾把分辨率 1920x1080 误读成 S20E108 并回写进边车 NFO；
+	// 重扫时必须忽略这个伪季集号，否则旧文件会把错误身份灌回 DB。
+	root := t.TempDir()
+	showDir := filepath.Join(root, "彼得·格里尔的贤者时间")
+	if err := os.MkdirAll(showDir, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	mediaPath := filepath.Join(showDir,
+		"[UHA-WINGS][Peter Grill to Kenja no Jikan][01][BDRIP 1920x1080 HEVC-YUV420P10 FLAC].strm")
+	if err := os.WriteFile(mediaPath, []byte("x"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(nfoPath(mediaPath), []byte(`<?xml version="1.0" encoding="UTF-8"?>
+<episodedetails>
+  <title>第 108 集</title>
+  <showtitle>彼得·格里尔的贤者时间</showtitle>
+  <season>20</season>
+  <episode>108</episode>
+  <tmdbid>99080</tmdbid>
+</episodedetails>`), 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	got, err := ReadLocalMetadata(mediaPath, root, true)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got == nil {
+		t.Fatal("metadata is nil")
+	}
+	if got.SeasonNum != 0 || got.EpisodeNum != 0 {
+		t.Fatalf("resolution artifact season/episode not dropped: s=%d e=%d", got.SeasonNum, got.EpisodeNum)
+	}
+	if got.EpisodeTitle != "" {
+		t.Fatalf("generated episode title not dropped: %q", got.EpisodeTitle)
+	}
+	if got.Title != "彼得·格里尔的贤者时间" {
+		t.Fatalf("series title = %q, want 彼得·格里尔的贤者时间", got.Title)
+	}
+}
+
 func TestReadLocalMovieMetadata(t *testing.T) {
 	dir := t.TempDir()
 	mediaPath := filepath.Join(dir, "Inception.2010.mkv")
@@ -375,3 +417,22 @@ func TestReadLocalMetadataArtworkFallbackOnGarbageShowNFO(t *testing.T) {
 		t.Fatalf("expected episode artwork fallback, got %+v", got)
 	}
 }
+
+func TestReadLocalMetadataFindsLegacyImgPoster(t *testing.T) {
+	root := t.TempDir()
+	mediaPath := filepath.Join(root, "Jigokuraku.S01E14.mkv.strm")
+	poster := filepath.Join(root, "Jigokuraku.S01E14-poster.img")
+	if err := os.WriteFile(mediaPath, []byte("https://example.test/video"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(poster, testJPEG, 0o644); err != nil {
+		t.Fatal(err)
+	}
+	got, err := ReadLocalMetadata(mediaPath, root, true)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got == nil || got.PosterURL != poster {
+		t.Fatalf("PosterURL = %q, want legacy .img poster %q", got.PosterURL, poster)
+	}
+}
@@ -39,10 +39,19 @@ func (r ManualScrapeRequest) EpisodeArtworkOption() *bool {
 }

 func (s *ScraperService) ApplyManualMatch(ctx context.Context, mediaID string, req ManualScrapeRequest) (*model.Media, error) {
-	return s.ApplyManualMatchWithOptions(ctx, mediaID, req, ScrapeOptions{EpisodeArtwork: req.EpisodeArtworkOption()})
+	return s.ApplyManualMatchWithOptions(ctx, mediaID, req, ScrapeOptions{
+		EpisodeArtwork:  req.EpisodeArtworkOption(),
+		ForceRematch:    true,
+		RebuildIdentity: true,
+	})
 }

 func (s *ScraperService) ApplyManualMatchWithOptions(ctx context.Context, mediaID string, req ManualScrapeRequest, options ScrapeOptions) (*model.Media, error) {
+	// A user-triggered match is authoritative. Do not let metadata written by a
+	// previous scrape influence the new result.
+	options.ForceRematch = true
+	options.RebuildIdentity = true
+
 	media, err := s.repo.Media.FindByID(ctx, mediaID)
 	if err != nil || media == nil {
 		return nil, errors.New("media not found")
@@ -55,12 +64,32 @@ func (s *ScraperService) ApplyManualMatchWithOptions(ctx context.Context, mediaI
 	if strings.TrimSpace(match.Title) == "" {
 		return nil, errors.New("manual match title required")
 	}
+	rebuildManualScrapeIdentity(media, lib, match)
 	if err := s.applyProviderMatchWithOptions(ctx, media, lib, match, options); err != nil {
 		return nil, err
 	}
 	return s.repo.Media.FindByID(ctx, mediaID)
 }

+func rebuildManualScrapeIdentity(media *model.Media, lib *model.Library, match *Match) {
+	if media == nil || match == nil {
+		return
+	}
+	mediaType := normalizeOrganizeMediaType(match.MediaType)
+	if mediaType == "" && librarySupportsSeasons(lib) {
+		mediaType = "tv"
+	}
+	switch mediaType {
+	case "tv", "anime", "variety":
+		media.SeasonNum, media.EpisodeNum = onlineEpisodeIdentityFromPath(media.Path)
+		media.EpisodeTitle = ""
+	case "movie", "adult":
+		media.SeasonNum = 0
+		media.EpisodeNum = 0
+		media.EpisodeTitle = ""
+	}
+}
+
 func (s *ScraperService) manualRequestMatch(ctx context.Context, req ManualScrapeRequest) (*Match, error) {
 	source := strings.ToLower(strings.TrimSpace(req.Source))
 	mediaType := normalizeMediaType(req.MediaType, req.Title, "")
@@ -98,7 +127,22 @@ func (s *ScraperService) manualRequestMatch(ctx context.Context, req ManualScrap
 			}
 		}
 	case source == "adult":
-		if match := s.manualAdultMatch(ctx, firstText(req.OriginalName, req.Title)); match != nil {
+		var match *Match
+		if s.adult != nil {
+			match, _ = s.adult.GetMetaTubeCandidate(ctx, req.TheTVDBID, req.DoubanID)
+		}
+		if match == nil {
+			match = s.manualAdultMatch(ctx, firstText(req.OriginalName, req.Title))
+		}
+		if match != nil {
+			// Older search responses used the portrait poster as a backdrop
+			// fallback. Do not let that placeholder replace a real preview
+			// image or processed primary image fetched from MetaTube.
+			if strings.TrimSpace(match.BackdropURL) != "" &&
+				strings.TrimSpace(req.BackdropURL) == strings.TrimSpace(req.PosterURL) {
+				req.BackdropURL = ""
+				req.PosterURL = ""
+			}
 			return mergeManualRequestIntoMatch(match, req), nil
 		}
 	}
@@ -24,6 +24,13 @@ func (s *ScraperService) ManualSearch(ctx context.Context, media *model.Media, q
 			mediaType = lib.Type
 		}
 	}
+	// Keep manual scraping consistent with automatic scraping for theatrical
+	// features stored inside anime libraries. The UI may pass the library type
+	// ("anime"), which otherwise makes TMDb stop after a TV result and hide the
+	// actual movie candidate.
+	if mediaLooksLikeTheatricalFeature(media) {
+		mediaType = "movie"
+	}
 	mediaType = normalizeMediaType(mediaType, queries[0], "")
 	providers := manualSearchProviderSet(provider)
 	year := mediaYearHint(media)
@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"net/http"
 	"net/http/httptest"
+	"path/filepath"
 	"strings"
 	"sync/atomic"
 	"testing"
@@ -34,6 +35,74 @@ func TestManualRequestMatchFallsBackToCandidatePayload(t *testing.T) {
 	}
 }

+func TestManualAdultMatchUsesSelectedMetaTubeDetailsAndRealBackdrop(t *testing.T) {
+	var detailCalls atomic.Int32
+	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != "/v1/movies/AVE/94600" {
+			http.NotFound(w, r)
+			return
+		}
+		detailCalls.Add(1)
+		w.Header().Set("Content-Type", "application/json")
+		_ = json.NewEncoder(w).Encode(struct {
+			Data MetaTubeMovieInfo `json:"data"`
+		}{
+			Data: MetaTubeMovieInfo{
+				ID:            "94600",
+				Number:        "CWPBD-138",
+				Title:         "Selected title",
+				Provider:      "AVE",
+				CoverURL:      "https://example.com/poster.jpg",
+				PreviewImages: []string{"https://example.com/backdrop.jpg"},
+			},
+		})
+	}))
+	defer upstream.Close()
+
+	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := db.AutoMigrate(&model.Setting{}, &model.APIConfig{}); err != nil {
+		t.Fatal(err)
+	}
+	repos := repository.New(db)
+	if err := repos.Setting.Set(t.Context(), "adult.scraper.engine", "metatube"); err != nil {
+		t.Fatal(err)
+	}
+	if err := repos.Setting.Set(t.Context(), "adult.scraper.metatube_server", upstream.URL); err != nil {
+		t.Fatal(err)
+	}
+	adult := NewAdultProvider(zap.NewNop(), nil, repos)
+	scraper := &ScraperService{adult: adult}
+
+	match, err := scraper.manualRequestMatch(t.Context(), ManualScrapeRequest{
+		Source:       "adult",
+		MediaType:    "adult",
+		Title:        "CWPBD-138 Selected title",
+		OriginalName: "CWPBD-138",
+		PosterURL:    "https://example.com/search-cover.jpg",
+		BackdropURL:  "https://example.com/search-cover.jpg",
+		DoubanID:     "94600",
+		TheTVDBID:    "AVE",
+		NSFW:         true,
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if detailCalls.Load() != 1 {
+		t.Fatalf("selected MetaTube detail calls = %d, want 1", detailCalls.Load())
+	}
+	wantPoster := upstream.URL + "/v1/images/primary/AVE/94600?auto=true&pos=1&quality=90&ratio=-1&url=https%3A%2F%2Fexample.com%2Fposter.jpg"
+	if match.PosterURL != wantPoster {
+		t.Fatalf("selected poster = %q, want %q", match.PosterURL, wantPoster)
+	}
+	wantBackdrop := upstream.URL + "/v1/images/backdrop/AVE/94600?quality=90"
+	if match.BackdropURL != wantBackdrop {
+		t.Fatalf("backdrop = %q, want %q", match.BackdropURL, wantBackdrop)
+	}
+}
+
 func TestParsePositiveIDStringAcceptsProviderPrefixes(t *testing.T) {
 	cases := map[string]string{
 		"12345":          "12345",
@@ -244,6 +313,80 @@ func TestManualSearchReturnsMovieFallbackForTVTypedTMDbSearch(t *testing.T) {
 	}
 }

+func TestManualSearchAnimeTheatricalPrefersTMDbMovie(t *testing.T) {
+	var paths []string
+	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		paths = append(paths, r.URL.Path)
+		w.Header().Set("Content-Type", "application/json")
+		switch r.URL.Path {
+		case "/search/movie":
+			_ = json.NewEncoder(w).Encode(map[string]any{
+				"results": []map[string]any{{
+					"id":             635302,
+					"title":          "鬼灭之刃 剧场版 无限列车篇",
+					"original_title": "劇場版「鬼滅の刃」無限列車編",
+					"release_date":   "2020-10-16",
+				}},
+			})
+		case "/search/tv":
+			_ = json.NewEncoder(w).Encode(map[string]any{
+				"results": []map[string]any{{
+					"id":             85937,
+					"name":           "鬼灭之刃",
+					"original_name":  "鬼滅の刃",
+					"first_air_date": "2019-04-06",
+				}},
+			})
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer upstream.Close()
+
+	db, err := gorm.Open(sqlite.Open("file::memory:?cache=shared"), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := db.AutoMigrate(&model.Library{}, &model.Series{}, &model.Media{}); err != nil {
+		t.Fatal(err)
+	}
+	repos := repository.New(db)
+	cfg := &config.Config{}
+	cfg.Secrets.TMDbAPIKey = "test-key"
+	cfg.Secrets.TMDbAPIProxy = upstream.URL
+	log := zap.NewNop()
+	scraper := NewScraperService(cfg, log, repos, NewTMDbProvider(cfg, log, nil), nil, nil, nil, NewHub(log))
+
+	lib := model.Library{Name: "动漫", Path: `/media/anime`, Type: "anime", Enabled: true}
+	if err := repos.DB.Create(&lib).Error; err != nil {
+		t.Fatal(err)
+	}
+	media := model.Media{
+		LibraryID: lib.ID,
+		Title:     "鬼灭之刃 剧场版 无限列车篇",
+		Path:      `/media/anime/鬼灭之刃/鬼灭之刃 剧场版 无限列车篇.mkv`,
+	}
+	if err := repos.DB.Create(&media).Error; err != nil {
+		t.Fatal(err)
+	}
+
+	results, err := scraper.ManualSearch(t.Context(), &media, media.Title, "tmdb", "anime")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(results) == 0 || results[0].TMDbID != 635302 || results[0].MediaType != "movie" {
+		t.Fatalf("manual theatrical results=%#v, paths=%v", results, paths)
+	}
+	if len(paths) == 0 || paths[0] != "/search/movie" {
+		t.Fatalf("TMDb search paths=%v, want movie first", paths)
+	}
+	for _, path := range paths {
+		if path == "/search/tv" {
+			t.Fatalf("manual theatrical search unexpectedly queried TV after finding movie: paths=%v", paths)
+		}
+	}
+}
+
 func TestManualSearchAllProvidersTMDbNumericIDTriesMovieAndTVNamespaces(t *testing.T) {
 	var paths []string
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
@@ -627,3 +770,90 @@ func TestApplyManualMovieMatchClearsEpisodeMarkers(t *testing.T) {
 		t.Fatalf("stale external IDs were not cleared for manual movie fallback: tmdb=%d thetvdb=%q", got.TMDbID, got.TheTVDBID)
 	}
 }
+
+func TestApplyManualTVMatchRebuildsEpisodeIdentityFromPath(t *testing.T) {
+	var requestedEpisodePath string
+	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		switch r.URL.Path {
+		case "/tv/69367":
+			_ = json.NewEncoder(w).Encode(map[string]any{
+				"id":             69367,
+				"name":           "路人女主的养成方法",
+				"original_name":  "冴えない彼女の育てかた",
+				"overview":       "整剧简介",
+				"poster_path":    "/show.jpg",
+				"backdrop_path":  "/show-backdrop.jpg",
+				"first_air_date": "2015-01-09",
+				"vote_average":   7.0,
+			})
+		case "/tv/69367/season/0/episode/1":
+			requestedEpisodePath = r.URL.Path
+			_ = json.NewEncoder(w).Encode(map[string]any{
+				"name":         "爱与青春的杀必死回",
+				"overview":     "特别篇简介",
+				"still_path":   "/special.jpg",
+				"air_date":     "2015-01-07",
+				"vote_average": 7.5,
+				"runtime":      24,
+			})
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer upstream.Close()
+
+	db, err := gorm.Open(sqlite.Open("file::memory:?cache=shared"), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := db.AutoMigrate(&model.Library{}, &model.Series{}, &model.Media{}); err != nil {
+		t.Fatal(err)
+	}
+	repos := repository.New(db)
+	cfg := &config.Config{}
+	cfg.Secrets.TMDbAPIKey = "test-key"
+	cfg.Secrets.TMDbAPIProxy = upstream.URL
+	log := zap.NewNop()
+	scraper := NewScraperService(cfg, log, repos, NewTMDbProvider(cfg, log, nil), nil, nil, nil, NewHub(log))
+
+	root := t.TempDir()
+	lib := model.Library{Name: "动漫", Path: root, Type: "anime", Enabled: true}
+	if err := repos.DB.Create(&lib).Error; err != nil {
+		t.Fatal(err)
+	}
+	media := model.Media{
+		LibraryID:    lib.ID,
+		Title:        "旧标题",
+		Path:         filepath.Join(root, "路人女主的养成方法 (2015)", "Season 1", "S01E00 - 爱与青春的杀必死回.strm"),
+		SeasonNum:    1,
+		EpisodeNum:   1,
+		EpisodeTitle: "错误百出的序曲",
+		SeriesID:     "stale-series",
+		TMDbID:       111,
+		BangumiID:    222,
+		ScrapeStatus: "matched",
+	}
+	if err := repos.DB.Create(&media).Error; err != nil {
+		t.Fatal(err)
+	}
+
+	got, err := scraper.ApplyManualMatch(t.Context(), media.ID, ManualScrapeRequest{
+		Source:    "tmdb",
+		MediaType: "tv",
+		Title:     "路人女主的养成方法",
+		TMDbID:    69367,
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if requestedEpisodePath != "/tv/69367/season/0/episode/1" {
+		t.Fatalf("episode details path = %q, want season-zero special", requestedEpisodePath)
+	}
+	if got.SeasonNum != 0 || got.EpisodeNum != 1 || got.EpisodeTitle != "爱与青春的杀必死回" {
+		t.Fatalf("rebuilt episode identity = S%02dE%02d %q", got.SeasonNum, got.EpisodeNum, got.EpisodeTitle)
+	}
+	if got.SeriesID != "" || got.TMDbID != 69367 || got.BangumiID != 0 {
+		t.Fatalf("stale scrape identity survived manual rematch: %#v", got)
+	}
+}
@@ -62,7 +62,7 @@ func classifyMediaCategory(input mediaClassifyInput, categories map[string]strin
 	isWesternByCategory := containsAnyText(categoryText, "欧美剧", "欧美电视剧", "美剧", "英剧", "欧美电影", "外语电影")
 	isWestern := isWesternByMetadata || (!hasRegionMetadata && isWesternByCategory)
 	isUSAnime := hasAny(countries, "US")
-	hasAnimeText := containsAnyText(contentText, "动画", "动漫", "番剧", "年番", "国漫", "日番", "韩漫", "美漫", "bangumi", "anime", "b-global", "ani-one", "crunchyroll")
+	hasAnimeText := containsAnyText(contentText, "动画", "动漫", "番剧", "年番", "国漫", "日番", "韩漫", "美漫", "bangumi", "anime", "b-global", "ani-one", "crunchyroll", "剧场版", "劇場版", "动画电影", "動畫電影")
 	hasVarietyText := containsAnyText(contentText, "综艺", "真人秀", "脱口秀", "晚会", "春晚", "gala", "festival gala", "reality", "talk show")
 	hasDocumentaryText := containsAnyText(contentText, "纪录", "纪录片", "documentary", "docu", "national geographic", "natgeo")
 	hasConcertText := containsAnyText(contentText, "演唱会", "音乐会", "concert", "live concert")
@@ -191,21 +191,21 @@ func normalizeMediaType(mediaType, title, category string) string {
 		return "adult"
 	case containsAnyText(raw, "综艺", "真人秀"):
 		return "variety"
-	case (containsAnyText(raw, "国漫", "日漫", "日番", "韩漫", "美漫", "欧美动漫", "其他动漫", "动漫", "动画") || classifierAnimeRE.MatchString(raw)) && !containsAnyText(raw, "动画电影"):
-		return "anime"
-	case containsAnyText(raw, "电视剧", "剧集", "连续剧", "短剧", "国产剧", "国剧", "大陆剧", "华语剧", "国产电视剧", "大陆电视剧", "华语电视剧", "欧美剧", "欧美电视剧", "美剧", "英剧", "日韩剧", "日韩电视剧", "日剧", "韩剧", "港剧", "台剧", "港台剧", "泰剧") || classifierTVRE.MatchString(raw):
-		return "tv"
-	case containsAnyText(raw, "电影", "演唱会") || classifierMovieRE.MatchString(raw):
-		return "movie"
-	}
-	text := strings.ToLower(title + " " + category)
-	switch {
-	case strings.Contains(text, "adult") || strings.Contains(text, "nsfw") || strings.Contains(text, "成人") || strings.Contains(text, "番号") || strings.Contains(text, "jav") || strings.Contains(text, "9kg") || classifierJAVCodeRE.MatchString(strings.ToUpper(title+" "+category)):
-		return "adult"
-	case containsAnyText(text, "综艺", "真人秀", "脱口秀", "晚会", "春晚", "gala", "festival gala", "reality", "talk show"):
-		return "variety"
-	case strings.Contains(text, "电影") || classifierMovieRE.MatchString(text):
-		return "movie"
+		case (containsAnyText(raw, "国漫", "日漫", "日番", "韩漫", "美漫", "欧美动漫", "其他动漫", "动漫", "动画") || classifierAnimeRE.MatchString(raw)) && !containsAnyText(raw, "动画电影", "剧场版", "劇場版"):
+			return "anime"
+		case containsAnyText(raw, "电视剧", "剧集", "连续剧", "短剧", "国产剧", "国剧", "大陆剧", "华语剧", "国产电视剧", "大陆电视剧", "华语电视剧", "欧美剧", "欧美电视剧", "美剧", "英剧", "日韩剧", "日韩电视剧", "日剧", "韩剧", "港剧", "台剧", "港台剧", "泰剧") || classifierTVRE.MatchString(raw):
+			return "tv"
+		case containsAnyText(raw, "电影", "演唱会", "剧场版", "劇場版") || classifierMovieRE.MatchString(raw):
+			return "movie"
+		}
+		text := strings.ToLower(title + " " + category)
+		switch {
+		case strings.Contains(text, "adult") || strings.Contains(text, "nsfw") || strings.Contains(text, "成人") || strings.Contains(text, "番号") || strings.Contains(text, "jav") || strings.Contains(text, "9kg") || classifierJAVCodeRE.MatchString(strings.ToUpper(title+" "+category)):
+			return "adult"
+		case containsAnyText(text, "综艺", "真人秀", "脱口秀", "晚会", "春晚", "gala", "festival gala", "reality", "talk show"):
+			return "variety"
+		case containsAnyText(text, "电影", "剧场版", "劇場版") || classifierMovieRE.MatchString(text):
+			return "movie"
 	case classifierAnimeRE.MatchString(text) || strings.Contains(text, "动漫") || strings.Contains(text, "动画"):
 		return "anime"
 	case strings.Contains(text, "variety") || strings.Contains(text, "综艺") || strings.Contains(text, "真人秀"):
@@ -0,0 +1,101 @@
+package service
+
+import (
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+)
+
+// strmPathAliases returns sibling STRM names that can represent the same media
+// item when keep_ext is toggled on or off.
+//
+// Both directions are supported:
+//
+//	foo.strm      <-> foo.mkv.strm
+//	foo.strm      <-> foo.mp4.strm
+//
+// The caller must still verify that the aliases are no longer present on disk.
+// keep_ext intentionally allows foo.mkv.strm and foo.mp4.strm to coexist as
+// two real versions, so an existing sibling must never be absorbed.
+func strmPathAliases(path string) []string {
+	clean := filepath.Clean(strings.TrimSpace(path))
+	if clean == "" || clean == "." || !strings.EqualFold(filepath.Ext(clean), ".strm") {
+		return nil
+	}
+	base := mediaSidecarBase(clean)
+	if base == "" {
+		return nil
+	}
+	name := filepath.Base(clean)
+	stem := strings.TrimSuffix(name, filepath.Ext(name))
+	lastExt := strings.ToLower(filepath.Ext(stem))
+	_, hasVideoExt := videoExtensions[lastExt]
+	hasVideoExt = hasVideoExt && !strings.EqualFold(lastExt, ".strm")
+
+	dir := filepath.Dir(clean)
+	out := make([]string, 0, len(videoExtensions)+1)
+	seen := make(map[string]struct{}, len(videoExtensions)+1)
+	add := func(candidate string) {
+		candidate = filepath.Clean(candidate)
+		if candidate == "" || candidate == "." || samePath(candidate, clean) {
+			return
+		}
+		key := strings.ToLower(candidate)
+		if _, ok := seen[key]; ok {
+			return
+		}
+		seen[key] = struct{}{}
+		out = append(out, candidate)
+	}
+	if hasVideoExt {
+		// Current keep_ext shape: the only legacy shape is the stripped name.
+		add(filepath.Join(dir, base+".strm"))
+		return out
+	}
+	// Stripped shape: an old keep_ext file may use any configured video ext.
+	exts := make([]string, 0, len(videoExtensions))
+	for ext := range videoExtensions {
+		if strings.EqualFold(ext, ".strm") {
+			continue
+		}
+		exts = append(exts, strings.ToLower(ext))
+	}
+	sort.Strings(exts)
+	for _, ext := range exts {
+		add(filepath.Join(dir, base+ext+".strm"))
+		if upper := strings.ToUpper(ext); upper != ext {
+			add(filepath.Join(dir, base+upper+".strm"))
+		}
+	}
+	return out
+}
+
+// missingSTRMPathAliases keeps only aliases which no longer exist on disk.
+// This is the key protection for keep_ext=true multi-version libraries: an
+// existing foo.mp4.strm is a real second version, not a rename tombstone.
+func missingSTRMPathAliases(path string) []string {
+	aliases := strmPathAliases(path)
+	if len(aliases) == 0 {
+		return nil
+	}
+	out := make([]string, 0, len(aliases))
+	for _, alias := range aliases {
+		if _, err := os.Lstat(alias); err == nil {
+			continue
+		} else if !os.IsNotExist(err) {
+			continue
+		}
+		out = append(out, alias)
+	}
+	return out
+}
+
+func liveSTRMPathAlias(path string) bool {
+	for _, alias := range strmPathAliases(path) {
+		if info, err := os.Stat(alias); err == nil && !info.IsDir() {
+			return true
+		}
+	}
+	return false
+}
@@ -301,16 +301,8 @@ func groupMediaSeriesCards(items []model.Media) []SeriesCard {
 			if betterSeriesLinkMedia(item, card.LinkMedia) {
 				card.LinkMedia = item
 			}
-			currentArtwork := seriesArtworkScore(item)
-			representativeArtwork := seriesArtworkScore(card.Rep)
-			if currentArtwork > representativeArtwork {
+			if betterSeriesRepresentative(item, card.Rep) {
 				card.Rep = item
-			} else if currentArtwork == representativeArtwork {
-				cur := item.SeasonNum*10000 + item.EpisodeNum
-				rep := card.Rep.SeasonNum*10000 + card.Rep.EpisodeNum
-				if cur > 0 && (rep == 0 || cur < rep) {
-					card.Rep = item
-				}
 			}
 			continue
 		}
@@ -335,6 +327,27 @@ func groupMediaSeriesCards(items []model.Media) []SeriesCard {
 	return cards
 }

+func betterSeriesRepresentative(candidate, current model.Media) bool {
+	// A theatrical feature can have local poster.jpg/background.jpg files and
+	// therefore a higher artwork score than its TV episodes. Keep the TV row as
+	// the visible identity of a mixed series card so a movie cannot hijack the
+	// series title, overview, and artwork.
+	candidateTheatrical := mediaLooksLikeTheatricalFeature(&candidate)
+	currentTheatrical := mediaLooksLikeTheatricalFeature(&current)
+	if candidateTheatrical != currentTheatrical {
+		return !candidateTheatrical
+	}
+
+	currentArtwork := seriesArtworkScore(candidate)
+	representativeArtwork := seriesArtworkScore(current)
+	if currentArtwork != representativeArtwork {
+		return currentArtwork > representativeArtwork
+	}
+	cur := candidate.SeasonNum*10000 + candidate.EpisodeNum
+	rep := current.SeasonNum*10000 + current.EpisodeNum
+	return cur > 0 && (rep == 0 || cur < rep)
+}
+
 func seriesMediaTime(media model.Media) time.Time {
 	if releaseDate := strings.TrimSpace(media.ReleaseDate); releaseDate != "" {
 		if parsed, err := time.Parse("2006-01-02", releaseDate); err == nil {
@@ -9,7 +9,7 @@ import (
 	"github.com/truewhile/MeBox/internal/model"
 )

-var episodicPathRE = regexp.MustCompile(`(?i)[\\/](?:电视剧|剧集|连续剧|短剧|国产剧|国剧|大陆剧|华语剧|国产电视剧|大陆电视剧|华语电视剧|欧美剧|欧美电视剧|美剧|英剧|日韩剧|日韩电视剧|日剧|韩剧|港剧|台剧|港台剧|泰剧|综艺|纪录片|儿童|动漫|番剧|国漫|日番|韩漫|美漫|欧美动漫|欧美动画|其他动漫|tv|series|shows?|season[\s._-]*\d|s\d{1,2}(?:[\s._-]|[\\/])|special[\s._-]*episodes?|specials?|sp|ovas?|oads?|extras?|bonus(?:es)?|omake|特别篇|特別篇|番外篇?|特典|外传|外傳|总集篇|總集篇)[\\/]`)
+var episodicPathRE = regexp.MustCompile(`(?i)[\\/](?:电视剧|剧集|连续剧|短剧|国产剧|国剧|大陆剧|华语剧|国产电视剧|大陆电视剧|华语电视剧|欧美剧|欧美电视剧|美剧|英剧|日韩剧|日韩电视剧|日剧|韩剧|港剧|台剧|港台剧|泰剧|综艺|纪录片|儿童|动漫|番剧|国漫|日番|韩漫|美漫|欧美动漫|欧美动画|其他动漫|tv|series|shows?|season[\s._-]*\d|s\d{1,2}(?:[\s._-]|[\\/])|special[\s._-]*episodes?|specials?|sp|ovas?|oads?|ovds?|onas?|extras?|bonus(?:es)?|omake|picture[\s._-]*drama|ncop|nced|特别篇|特別篇|番外篇?|特典|外传|外傳|总集篇|總集篇|画像特典)[\\/]`)

 var genericMovieTitleRE = regexp.MustCompile(`(?i)^(?:cd\s*\d+|part\s*\d+|disc\s*\d+|disk\s*\d+|dvd\s*\d+|movie|film|video|main|feature|track\s*\d+|preview|sample|trailer|\d{3,4}p|4k|2160p|1080p|720p)$`)

@@ -123,9 +123,9 @@ var (
 	seriesIDRE          = regexp.MustCompile(`(?i)\s*\[(?:tmdb|tmdbid)[=-]\d+\]\s*`)
 	seriesBraceRE       = regexp.MustCompile(`(?i)\s*\{(?:tmdb|tmdbid|douban|bangumi|bgm|thetvdb|tvdb)[\s:=#-]*[a-z0-9_-]+\}\s*`)
 	seriesSpacerRE      = regexp.MustCompile(`[\s._-]+`)
-	seriesSeasonDirRE   = regexp.MustCompile(`(?i)^(?:s\d{1,2}|season[\s._-]*\d{1,2}|第\s*[0-9一二三四五六七八九十百零两]+\s*季|special[\s._-]*episodes?|specials?|sp|ovas?|oads?|extras?|bonus(?:es)?|omake|特别篇|特別篇|番外篇?|特典|外传|外傳|总集篇|總集篇)$`)
-	seriesSpecialCodeRE = regexp.MustCompile(`(?i)\s*[\[(（【]?\s*(?:s0+\s*e?\s*\d+|season\s*0+(?:\s*episode)?\s*\d*|special(?:\s*episode)?s?\s*\d*|sp\s*\d*|ovas?\s*\d*|oads?\s*\d*|extras?\s*\d*|bonus(?:es)?\s*\d*|omake\s*\d*)\s*[\])）】]?$`)
-	seriesSpecialCJKRE  = regexp.MustCompile(`(?i)\s*[\[(（【]?\s*(?:特别篇|特別篇|番外篇?|特典|外传|外傳|总集篇|總集篇)(?:\s*第?\s*[0-9一二三四五六七八九十百零两]+(?:[集话話期])?)?\s*[\])）】]?$`)
+	seriesSeasonDirRE   = regexp.MustCompile(`(?i)^(?:s\d{1,2}|season[\s._-]*\d{1,2}|第\s*[0-9一二三四五六七八九十百零两]+\s*季|special[\s._-]*episodes?|specials?|sp|ovas?|oads?|ovds?|onas?|extras?|bonus(?:es)?|omake|picture[\s._-]*drama|ncop|nced|特别篇|特別篇|番外篇?|特典|外传|外傳|总集篇|總集篇|画像特典)$`)
+	seriesSpecialCodeRE = regexp.MustCompile(`(?i)\s*[\[(（【]?\s*(?:s0+\s*e?\s*\d+|season\s*0+(?:\s*episode)?\s*\d*|special(?:\s*episode)?s?\s*\d*|sp\s*\d*|ovas?\s*\d*|oads?\s*\d*|ovds?\s*\d*|onas?\s*\d*|extras?\s*\d*|bonus(?:es)?\s*\d*|omake\s*\d*|picture[\s._-]*drama\s*\d*|ncop\s*\d*|nced\s*\d*)\s*[\])）】]?$`)
+	seriesSpecialCJKRE  = regexp.MustCompile(`(?i)\s*[\[(（【]?\s*(?:特别篇|特別篇|番外篇?|特典|外传|外傳|总集篇|總集篇|画像特典)(?:\s*第?\s*[0-9一二三四五六七八九十百零两]+(?:[集话話期])?)?\s*[\])）】]?$`)
 )

 func normalizeSeriesTitle(value string) string {
@@ -173,7 +173,7 @@ func seriesTitleFromMediaPath(path string) string {
 	if last := parts[len(parts)-1]; !seriesPathPartLooksLikeFile(last) && !seriesSeasonDirRE.MatchString(filepath.Base(last)) {
 		dirIndex = len(parts) - 1
 	}
-	for dirIndex >= 0 && seriesSeasonDirRE.MatchString(filepath.Base(parts[dirIndex])) {
+	for dirIndex >= 0 && (seriesSeasonDirRE.MatchString(filepath.Base(parts[dirIndex])) || isTheatricalFolder(parts[dirIndex])) {
 		dirIndex--
 	}
 	if dirIndex < 0 {
@@ -67,17 +67,20 @@ func newMediaSeriesKeyResolver(items []model.Media) mediaSeriesKeyResolver {

 func (r mediaSeriesKeyResolver) key(media model.Media) string {
 	if mediaLooksEpisodicForGrouping(media) {
-		if key := repeatedSeriesTitleKey(media); key != "" && r.titleCounts[key] > 1 {
-			return compactSeriesKey(key)
-		}
 		if pathKey := mediaSeriesRawKey(media); strings.HasPrefix(pathKey, "library-path") {
 			if titleKey := r.pathTitles[pathKey]; titleKey != "" {
 				return compactSeriesKey(titleKey)
 			}
+			// A series directory is the strongest identity for mixed rows:
+			// main episodes and specials (CM/NCOP/PV/OVA) may be scraped to
+			// slightly different titles, but they still belong to one show.
 			if r.pathCounts[pathKey] > 1 {
 				return compactSeriesKey(pathKey)
 			}
 		}
+		if key := repeatedSeriesTitleKey(media); key != "" && r.titleCounts[key] > 1 {
+			return compactSeriesKey(key)
+		}
 		if key := repeatedSeriesExternalKey(media); key != "" && r.externalCounts[key] > 1 {
 			return compactSeriesKey(key)
 		}
@@ -47,14 +47,14 @@ func TestListRecentSeriesCardsCountsAllEpisodesInSeries(t *testing.T) {
 	if len(cards) != 1 {
 		t.Fatalf("recent cards = %#v, want one series card", cards)
 	}
-		if cards[0].Count != 40 {
-			t.Fatalf("recent series count = %d, want full 40 episodes", cards[0].Count)
-		}
-		expectedLastAdded := now.Add(40 * time.Minute)
-		if cards[0].LastAddedAt == nil || !cards[0].LastAddedAt.Equal(expectedLastAdded) {
-			t.Fatalf("recent series LastAddedAt = %v, want %v", cards[0].LastAddedAt, expectedLastAdded)
-		}
+	if cards[0].Count != 40 {
+		t.Fatalf("recent series count = %d, want full 40 episodes", cards[0].Count)
 	}
+	expectedLastAdded := now.Add(40 * time.Minute)
+	if cards[0].LastAddedAt == nil || !cards[0].LastAddedAt.Equal(expectedLastAdded) {
+		t.Fatalf("recent series LastAddedAt = %v, want %v", cards[0].LastAddedAt, expectedLastAdded)
+	}
+}

 func TestMediaSeriesKeyCollapsesNestedSpecialFolders(t *testing.T) {
 	main := model.Media{
@@ -377,6 +377,51 @@ func TestGroupMediaSeriesCardsMergesPollutedEpisodeFoldersBySharedShowID(t *test
 	}
 }

+func TestGroupMediaSeriesCardsKeepsMixedTitlesInSameEpisodicDirectoryTogether(t *testing.T) {
+	items := []model.Media{
+		{
+			Base:         model.Base{ID: "main-1"},
+			LibraryID:    "anime",
+			Title:        "住在拔作岛上的我应该如何是好？",
+			Path:         `/media/影视库/动漫/拔作岛/[64bitsub][Nukitashi][01][AVC_2×FLAC].mkv.strm`,
+			SeasonNum:    1,
+			EpisodeNum:   1,
+			ScrapeStatus: "matched",
+		},
+		{
+			Base:         model.Base{ID: "main-2"},
+			LibraryID:    "anime",
+			Title:        "住在拔作岛上的我应该如何是好？",
+			Path:         `/media/影视库/动漫/拔作岛/[64bitsub][Nukitashi][02][AVC_2×FLAC].mkv.strm`,
+			SeasonNum:    1,
+			EpisodeNum:   2,
+			ScrapeStatus: "matched",
+		},
+		{
+			Base:         model.Base{ID: "special-1"},
+			LibraryID:    "anime",
+			Title:        "nukitashi",
+			Path:         `/media/影视库/动漫/拔作岛/[64bitsub][Nukitashi][CM_01][AVC_FLAC].mkv.strm`,
+			ScrapeStatus: "matched",
+		},
+		{
+			Base:         model.Base{ID: "special-2"},
+			LibraryID:    "anime",
+			Title:        "nukitashi",
+			Path:         `/media/影视库/动漫/拔作岛/[64bitsub][Nukitashi][PV_01][AVC_FLAC].mkv.strm`,
+			ScrapeStatus: "matched",
+		},
+	}
+
+	cards := groupMediaSeriesCards(items)
+	if len(cards) != 1 {
+		t.Fatalf("cards=%#v, want main episodes and specials in the same directory folded into one card", cards)
+	}
+	if cards[0].Count != 4 {
+		t.Fatalf("series count=%d, want 4 items", cards[0].Count)
+	}
+}
+
 func TestGroupMediaSeriesCardsKeepsMovieVersionsAsOneMovie(t *testing.T) {
 	items := []model.Media{
 		{
@@ -404,6 +449,42 @@ func TestGroupMediaSeriesCardsKeepsMovieVersionsAsOneMovie(t *testing.T) {
 	}
 }

+func TestGroupMediaSeriesCardsKeepsTheatricalMovieWithTVSeries(t *testing.T) {
+	episode := model.Media{
+		Base:       model.Base{ID: "episode"},
+		LibraryID:  "anime",
+		Title:      "摇曳露营△",
+		Path:       `/media/动漫/摇曳露营△ (2018)/Season 01/摇曳露营△.S01E01.mkv`,
+		PosterURL:  "https://image.tmdb.org/t/p/w500/episode.jpg",
+		SeasonNum:  1,
+		EpisodeNum: 1,
+	}
+	theatrical := model.Media{
+		Base:        model.Base{ID: "theatrical"},
+		LibraryID:   "anime",
+		Title:       "摇曳露营△ 剧场版",
+		Path:        `/media/动漫/摇曳露营△ (2018)/摇曳露营△ 剧场版 (2022)/Eiga.Yurukyan.2022.Bluray.mkv`,
+		PosterURL:   "/media/动漫/摇曳露营△ (2018)/剧场版/poster.jpg",
+		BackdropURL: "/media/动漫/摇曳露营△ (2018)/剧场版/background.jpg",
+		Overview:    "剧场版简介",
+		TMDbID:      566466,
+	}
+
+	cards := groupMediaSeriesCards([]model.Media{episode, theatrical})
+	if len(cards) != 1 {
+		t.Fatalf("cards=%#v, want theatrical movie retained with TV series", cards)
+	}
+	if cards[0].Count != 2 {
+		t.Fatalf("series card count=%d, want TV episode plus theatrical movie", cards[0].Count)
+	}
+	if cards[0].Rep.ID != episode.ID {
+		t.Fatalf("series representative=%q, want TV episode %q", cards[0].Rep.ID, episode.ID)
+	}
+	if cards[0].Rep.Title != episode.Title {
+		t.Fatalf("series representative title=%q, want %q", cards[0].Rep.Title, episode.Title)
+	}
+}
+
 func TestGroupMediaSeriesCardsDoesNotCollideMovieAndTVExternalIDs(t *testing.T) {
 	movie := model.Media{
 		Base:      model.Base{ID: "movie"},
@@ -467,11 +548,11 @@ func TestGroupMediaSeriesCardsKeepsIndependentMoviesSeparateInSharedSubdirectory
 		{LibraryID: "movies", Title: "cd1", Path: `/media/电影/指环王 (2001)/cd1.mkv`},
 		{LibraryID: "movies", Title: "cd2", Path: `/media/电影/指环王 (2001)/cd2.mkv`},
 	}
-		cdCards := groupMediaSeriesCards(cdItems)
-		if len(cdCards) != 1 {
-			t.Fatalf("got %d cards for cd1/cd2, want 1 folded movie card", len(cdCards))
-		}
+	cdCards := groupMediaSeriesCards(cdItems)
+	if len(cdCards) != 1 {
+		t.Fatalf("got %d cards for cd1/cd2, want 1 folded movie card", len(cdCards))
 	}
+}

 func TestListMediaEpisodesKeepsIndependentMoviesSeparate(t *testing.T) {
 	db := newServiceTestDB(t, &model.Library{}, &model.Media{})
@@ -512,4 +593,3 @@ func TestListMediaEpisodesKeepsIndependentMoviesSeparate(t *testing.T) {
 		t.Fatalf("ListMediaEpisodes got %#v, want exactly m1", eps)
 	}
 }
-
@@ -0,0 +1,54 @@
+package service
+
+import (
+	"regexp"
+	"strings"
+)
+
+const (
+	mediaSpecialTheatrical = "theatrical"
+	mediaSpecialOVA        = "ova"
+	mediaSpecialOAD        = "oad"
+	mediaSpecialOVD        = "ovd"
+	mediaSpecialONA        = "ona"
+	mediaSpecialExtra      = "extra"
+	mediaSpecialBonus      = "bonus"
+	mediaSpecialOmake      = "omake"
+	mediaSpecialPicture    = "picture_drama"
+	mediaSpecialNCOP       = "ncop"
+	mediaSpecialNCED       = "nced"
+	mediaSpecialGeneric    = "special"
+)
+
+var mediaSpecialKindPatterns = []struct {
+	kind string
+	re   *regexp.Regexp
+}{
+	{mediaSpecialOVA, regexp.MustCompile(`(?i)(?:^|[^a-z0-9])ova(?:s)?(?:[\s._-]*\d+)?(?:[^a-z0-9]|$)`)},
+	{mediaSpecialOAD, regexp.MustCompile(`(?i)(?:^|[^a-z0-9])oad(?:s)?(?:[\s._-]*\d+)?(?:[^a-z0-9]|$)`)},
+	{mediaSpecialOVD, regexp.MustCompile(`(?i)(?:^|[^a-z0-9])ovd(?:s)?(?:[\s._-]*\d+)?(?:[^a-z0-9]|$)`)},
+	{mediaSpecialONA, regexp.MustCompile(`(?i)(?:^|[^a-z0-9])ona(?:s)?(?:[\s._-]*\d+)?(?:[^a-z0-9]|$)`)},
+	{mediaSpecialPicture, regexp.MustCompile(`(?i)(?:^|[^a-z0-9])(?:picture[\s._-]*drama|画像特典)(?:[^a-z0-9]|$)`)},
+	{mediaSpecialNCOP, regexp.MustCompile(`(?i)(?:^|[^a-z0-9])ncop(?:\d+)?(?:[^a-z0-9]|$)`)},
+	{mediaSpecialNCED, regexp.MustCompile(`(?i)(?:^|[^a-z0-9])nced(?:\d+)?(?:[^a-z0-9]|$)`)},
+	{mediaSpecialExtra, regexp.MustCompile(`(?i)(?:^|[^a-z0-9])extras?(?:[\s._-]*\d+)?(?:[^a-z0-9]|$)`)},
+	{mediaSpecialBonus, regexp.MustCompile(`(?i)(?:^|[^a-z0-9])bonus(?:es)?(?:[\s._-]*\d+)?(?:[^a-z0-9]|$)`)},
+	{mediaSpecialOmake, regexp.MustCompile(`(?i)(?:^|[^a-z0-9])omake(?:[\s._-]*\d+)?(?:[^a-z0-9]|$)`)},
+	{mediaSpecialGeneric, regexp.MustCompile(`(?i)(?:^|[^a-z0-9])(?:special(?:[\s._-]*episodes?)?|specials|sps?)(?:[\s._-]*\d+)?(?:[^a-z0-9]|$)|特别篇|特別篇|番外篇?|特典|外传|外傳|总集篇|總集篇`)},
+}
+
+func mediaSpecialKind(path string) string {
+	if pathHasTheatricalFolder(path) || patTheatricalTitle.MatchString(path) {
+		return mediaSpecialTheatrical
+	}
+	for _, part := range strings.FieldsFunc(path, func(r rune) bool {
+		return r == '/' || r == '\\'
+	}) {
+		for _, pattern := range mediaSpecialKindPatterns {
+			if pattern.re.MatchString(part) {
+				return pattern.kind
+			}
+		}
+	}
+	return ""
+}
@@ -120,22 +120,57 @@ func GroupMediaVersions(items []model.Media) []MediaItem {
 	return groupMediaVersions(items)
 }

+// GroupEpisodeVersionsForDisplay folds encoding/container variants into one
+// episode while preserving season/episode ordering for episode-list APIs.
+func GroupEpisodeVersionsForDisplay(items []model.Media) []MediaItem {
+	grouped := groupMediaVersions(items)
+	if grouped == nil {
+		return []MediaItem{}
+	}
+	sort.SliceStable(grouped, func(i, j int) bool {
+		if grouped[i].SeasonNum != grouped[j].SeasonNum {
+			return grouped[i].SeasonNum < grouped[j].SeasonNum
+		}
+		if grouped[i].EpisodeNum != grouped[j].EpisodeNum {
+			return grouped[i].EpisodeNum < grouped[j].EpisodeNum
+		}
+		return grouped[i].CreatedAt.Before(grouped[j].CreatedAt)
+	})
+	return grouped
+}
+
 func mediaVersionGroupKey(m model.Media) string {
 	// 远程 Emby 挂载条目保持独立，不与其它远程条目或本地条目折叠合并。
 	if IsEmbyRemoteID(m.ID) {
 		return fmt.Sprintf("embyremote:%s", m.ID)
 	}

-	if m.SeasonNum > 0 || m.EpisodeNum > 0 {
+	libKey := strings.ToLower(strings.TrimSpace(m.LibraryID))
+	if libKey == "" {
+		libKey = strings.ToLower(strings.TrimSpace(m.DisplayLibraryID))
+	}
+	specialKind := mediaSpecialKind(m.Path)
+	season, episode := m.SeasonNum, m.EpisodeNum
+	if specialKind != "" && specialKind != mediaSpecialTheatrical && episode <= 0 {
+		if parsedSeason, parsedEpisode := ParseEpisode(m.Path); parsedEpisode > 0 {
+			season, episode = parsedSeason, parsedEpisode
+		}
+	}
+
+	if season > 0 || episode > 0 {
+		kind := specialKind
+		if kind == "" {
+			kind = "episode"
+		}
 		switch {
 		case m.TMDbID > 0:
-			return fmt.Sprintf("episode:tmdb:%d:%d:%d", m.TMDbID, m.SeasonNum, m.EpisodeNum)
+			return fmt.Sprintf("episode:%s:tmdb:%d:%d:%d", kind, m.TMDbID, season, episode)
 		case m.BangumiID > 0:
-			return fmt.Sprintf("episode:bangumi:%d:%d:%d", m.BangumiID, m.SeasonNum, m.EpisodeNum)
+			return fmt.Sprintf("episode:%s:bangumi:%d:%d:%d", kind, m.BangumiID, season, episode)
 		case strings.TrimSpace(m.DoubanID) != "":
-			return fmt.Sprintf("episode:douban:%s:%d:%d", strings.ToLower(strings.TrimSpace(m.DoubanID)), m.SeasonNum, m.EpisodeNum)
+			return fmt.Sprintf("episode:%s:douban:%s:%d:%d", kind, strings.ToLower(strings.TrimSpace(m.DoubanID)), season, episode)
 		case strings.TrimSpace(m.TheTVDBID) != "":
-			return fmt.Sprintf("episode:thetvdb:%s:%d:%d", strings.ToLower(strings.TrimSpace(m.TheTVDBID)), m.SeasonNum, m.EpisodeNum)
+			return fmt.Sprintf("episode:%s:thetvdb:%s:%d:%d", kind, strings.ToLower(strings.TrimSpace(m.TheTVDBID)), season, episode)
 		}
 		title := firstNonEmpty(m.OriginalName, m.Title)
 		if title == "" {
@@ -147,37 +182,61 @@ func mediaVersionGroupKey(m model.Media) string {
 		}
 		return strings.Join([]string{
 			"episode",
-			strings.ToLower(strings.TrimSpace(m.LibraryID)),
+			kind,
+			libKey,
 			title,
-			fmt.Sprintf("%d:%d", m.SeasonNum, m.EpisodeNum),
+			fmt.Sprintf("%d:%d", season, episode),
 		}, "|")
 	}

-	libKey := strings.ToLower(strings.TrimSpace(m.LibraryID))
-	if libKey == "" {
-		libKey = strings.ToLower(strings.TrimSpace(m.DisplayLibraryID))
+	if specialKind != "" && specialKind != mediaSpecialTheatrical {
+		return mediaVersionStemGroupKey(m, libKey)
 	}

 	switch {
 	case m.TMDbID > 0:
 		if libKey != "" {
+			if specialKind != "" {
+				return fmt.Sprintf("movie:%s:%s:tmdb:%d", specialKind, libKey, m.TMDbID)
+			}
 			return fmt.Sprintf("movie:%s:tmdb:%d", libKey, m.TMDbID)
 		}
+		if specialKind != "" {
+			return fmt.Sprintf("movie:%s:tmdb:%d", specialKind, m.TMDbID)
+		}
 		return fmt.Sprintf("tmdb:%d", m.TMDbID)
 	case m.BangumiID > 0:
 		if libKey != "" {
+			if specialKind != "" {
+				return fmt.Sprintf("movie:%s:%s:bangumi:%d", specialKind, libKey, m.BangumiID)
+			}
 			return fmt.Sprintf("movie:%s:bangumi:%d", libKey, m.BangumiID)
 		}
+		if specialKind != "" {
+			return fmt.Sprintf("movie:%s:bangumi:%d", specialKind, m.BangumiID)
+		}
 		return fmt.Sprintf("bangumi:%d", m.BangumiID)
 	case strings.TrimSpace(m.DoubanID) != "":
 		if libKey != "" {
+			if specialKind != "" {
+				return fmt.Sprintf("movie:%s:%s:douban:%s", specialKind, libKey, strings.ToLower(strings.TrimSpace(m.DoubanID)))
+			}
 			return fmt.Sprintf("movie:%s:douban:%s", libKey, strings.ToLower(strings.TrimSpace(m.DoubanID)))
 		}
+		if specialKind != "" {
+			return "movie:" + specialKind + ":douban:" + strings.ToLower(strings.TrimSpace(m.DoubanID))
+		}
 		return "douban:" + strings.ToLower(strings.TrimSpace(m.DoubanID))
 	case strings.TrimSpace(m.TheTVDBID) != "":
 		if libKey != "" {
+			if specialKind != "" {
+				return fmt.Sprintf("movie:%s:%s:thetvdb:%s", specialKind, libKey, strings.ToLower(strings.TrimSpace(m.TheTVDBID)))
+			}
 			return fmt.Sprintf("movie:%s:thetvdb:%s", libKey, strings.ToLower(strings.TrimSpace(m.TheTVDBID)))
 		}
+		if specialKind != "" {
+			return "movie:" + specialKind + ":thetvdb:" + strings.ToLower(strings.TrimSpace(m.TheTVDBID))
+		}
 		return "thetvdb:" + strings.ToLower(strings.TrimSpace(m.TheTVDBID))
 	}

@@ -1,6 +1,7 @@
 package service

 import (
+	"fmt"
 	"strings"
 	"testing"
 	"time"
@@ -49,6 +50,130 @@ func TestGroupMediaVersionsMergesEpisodeByExternalIDAcrossLibraries(t *testing.T
 	}
 }

+func TestGroupEpisodeVersionsForDisplayMergesAndKeepsEpisodeOrder(t *testing.T) {
+	rows := []model.Media{
+		{Base: model.Base{ID: "ep2"}, LibraryID: "tv", Title: "Show", SeasonNum: 1, EpisodeNum: 2, TMDbID: 99, Path: "/show/s01e02.mkv"},
+		{Base: model.Base{ID: "ep1-small"}, LibraryID: "tv", Title: "Show", SeasonNum: 1, EpisodeNum: 1, TMDbID: 99, Path: "/show/s01e01.mp4", SizeBytes: 100},
+		{Base: model.Base{ID: "ep1-large"}, LibraryID: "tv", Title: "Show", SeasonNum: 1, EpisodeNum: 1, TMDbID: 99, Path: "/show/s01e01.mkv", SizeBytes: 200},
+	}
+
+	grouped := GroupEpisodeVersionsForDisplay(rows)
+	if len(grouped) != 2 {
+		t.Fatalf("grouped len = %d, want 2: %#v", len(grouped), grouped)
+	}
+	if grouped[0].EpisodeNum != 1 || len(grouped[0].Versions) != 2 {
+		t.Fatalf("episode 1 was not merged first: %#v", grouped)
+	}
+	if grouped[0].ID != "ep1-large" {
+		t.Fatalf("primary version = %q, want ep1-large", grouped[0].ID)
+	}
+	if grouped[1].EpisodeNum != 2 {
+		t.Fatalf("second item episode = %d, want 2", grouped[1].EpisodeNum)
+	}
+}
+
+func TestGroupMediaVersionsSeparatesAnimeSpecialKindsAndNumbers(t *testing.T) {
+	rows := []model.Media{
+		{
+			Base:      model.Base{ID: "movie"},
+			LibraryID: "anime",
+			Title:     "摇曳露营△",
+			Path:      "/media/动漫/摇曳露营△/摇曳露营△ 剧场版 (2022)/movie.strm",
+			TMDbID:    76075,
+		},
+		{
+			Base:      model.Base{ID: "ova-1"},
+			LibraryID: "anime",
+			Title:     "摇曳露营△",
+			Path:      "/media/动漫/摇曳露营△/OVA/Yuru Camp OVA01.strm",
+			TMDbID:    76075,
+		},
+		{
+			Base:      model.Base{ID: "ova-2"},
+			LibraryID: "anime",
+			Title:     "摇曳露营△",
+			Path:      "/media/动漫/摇曳露营△/OVA/Yuru Camp OVA02.strm",
+			TMDbID:    76075,
+		},
+		{
+			Base:      model.Base{ID: "oad-1"},
+			LibraryID: "anime",
+			Title:     "摇曳露营△",
+			Path:      "/media/动漫/摇曳露营△/OAD/Yuru Camp OAD01.strm",
+			TMDbID:    76075,
+		},
+	}
+
+	grouped := groupMediaVersions(rows)
+	if len(grouped) != 4 {
+		t.Fatalf("grouped len = %d, want theatrical, OVA01, OVA02 and OAD01 separate: %#v", len(grouped), grouped)
+	}
+	for _, item := range grouped {
+		if len(item.Versions) > 1 {
+			t.Fatalf("unrelated anime extras were merged as versions: %#v", item.Versions)
+		}
+	}
+}
+
+func TestGroupMediaVersionsKeepsBracketNumberedEpisodesSeparate(t *testing.T) {
+	// UHA-WINGS 命名：[组名][标题][01][BDRIP 1920x1080 ...].strm。
+	// 曾因 1920x1080 被解析成 S20E108，12 集全部折叠成一集的多个版本。
+	rows := make([]model.Media, 0, 12)
+	for episode := 1; episode <= 12; episode++ {
+		rows = append(rows, model.Media{
+			Base:      model.Base{ID: fmt.Sprintf("ep-%02d", episode)},
+			LibraryID: "anime",
+			Title:     "彼得·格里尔的贤者时间",
+			Path: fmt.Sprintf(
+				"/media/影视库/动漫/彼得·格里尔的贤者时间/[UHA-WINGS][Peter Grill to Kenja no Jikan][%02d][BDRIP 1920x1080 HEVC-YUV420P10 FLAC].strm",
+				episode),
+			TMDbID: 99080,
+		})
+	}
+	for i := range rows {
+		season, episode := ParseEpisode(rows[i].Path)
+		rows[i].SeasonNum = season
+		rows[i].EpisodeNum = episode
+	}
+
+	grouped := groupMediaVersions(rows)
+	if len(grouped) != 12 {
+		t.Fatalf("grouped len = %d, want 12 distinct episodes: %#v", len(grouped), grouped)
+	}
+	for _, item := range grouped {
+		if len(item.Versions) > 1 {
+			t.Fatalf("distinct episodes were folded into versions: %#v", item.Versions)
+		}
+		if item.SeasonNum != 1 || item.EpisodeNum < 1 || item.EpisodeNum > 12 {
+			t.Fatalf("unexpected episode identity s=%d e=%d", item.SeasonNum, item.EpisodeNum)
+		}
+	}
+}
+
+func TestGroupMediaVersionsMergesSameNumberedOVAEncodes(t *testing.T) {
+	rows := []model.Media{
+		{
+			Base:      model.Base{ID: "ova-1-hd"},
+			LibraryID: "anime",
+			Path:      "/media/动漫/示例/OVA/Show OVA01 1080p.mkv",
+			TMDbID:    123,
+			SizeBytes: 100,
+		},
+		{
+			Base:      model.Base{ID: "ova-1-uhd"},
+			LibraryID: "anime",
+			Path:      "/media/动漫/示例/OVA/Show OVA01 2160p.mkv",
+			TMDbID:    123,
+			SizeBytes: 200,
+		},
+	}
+
+	grouped := groupMediaVersions(rows)
+	if len(grouped) != 1 || len(grouped[0].Versions) != 2 {
+		t.Fatalf("same numbered OVA encodes should be versions: %#v", grouped)
+	}
+}
+
 func TestGroupMediaVersionsMergesMovieEncodingVariants(t *testing.T) {
 	hd := model.Media{
 		LibraryID:    "movies",
@@ -83,7 +83,7 @@ func (p *MetaTubeProvider) Search(ctx context.Context, cfg MetaTubeConfig, query

 	matches := make([]*Match, 0, len(results))
 	for _, res := range results {
-		match := p.convertSearchResultToMatch(query, &res)
+		match := p.convertSearchResultToMatch(cfg, query, &res)
 		if match != nil {
 			matches = append(matches, match)
 		}
@@ -134,7 +134,7 @@ func (p *MetaTubeProvider) GetMovie(ctx context.Context, cfg MetaTubeConfig, pro
 		return nil, fmt.Errorf("decode metatube movie response failed: %w", directErr)
 	}

-	return p.convertMovieInfoToMatch(&movie), nil
+	return p.convertMovieInfoToMatch(cfg, &movie), nil
 }

 // SearchAndGetBestMatch 执行搜索并拉取首个最佳结果的完整电影详情。
@@ -276,7 +276,7 @@ func (p *MetaTubeProvider) applyAuthHeader(req *http.Request, token string) {
 	req.Header.Set("User-Agent", "MeBox/1.0 (MetaTube Client)")
 }

-func (p *MetaTubeProvider) convertSearchResultToMatch(query string, res *MetaTubeSearchResult) *Match {
+func (p *MetaTubeProvider) convertSearchResultToMatch(cfg MetaTubeConfig, query string, res *MetaTubeSearchResult) *Match {
 	if res == nil {
 		return nil
 	}
@@ -300,14 +300,22 @@ func (p *MetaTubeProvider) convertSearchResultToMatch(query string, res *MetaTub
 		}
 	}

-	posterURL := firstNonEmpty(res.BigCoverURL, res.CoverURL, res.BigThumbURL, res.ThumbURL)
+	posterSource := firstNonEmpty(res.BigCoverURL, res.CoverURL, res.BigThumbURL, res.ThumbURL)
+	posterURL, backdropURL := metaTubeArtworkURLs(cfg, res.Provider, res.ID, posterSource)
+	if posterURL == "" {
+		posterURL = firstNonEmpty(res.BigThumbURL, res.ThumbURL, res.BigCoverURL, res.CoverURL)
+	}
+	if backdropURL == "" {
+		backdropURL = firstNonEmpty(res.BigCoverURL, res.CoverURL, posterURL)
+	}

 	return &Match{
+		Provider:     "metatube",
 		MediaType:    "adult",
 		Title:        formattedTitle,
 		OriginalName: code,
 		PosterURL:    posterURL,
-		BackdropURL:  posterURL,
+		BackdropURL:  backdropURL,
 		Year:         year,
 		ReleaseDate:  cleanDateString(res.ReleaseDate),
 		Rating:       res.Score,
@@ -318,7 +326,7 @@ func (p *MetaTubeProvider) convertSearchResultToMatch(query string, res *MetaTub
 	}
 }

-func (p *MetaTubeProvider) convertMovieInfoToMatch(movie *MetaTubeMovieInfo) *Match {
+func (p *MetaTubeProvider) convertMovieInfoToMatch(cfg MetaTubeConfig, movie *MetaTubeMovieInfo) *Match {
 	if movie == nil {
 		return nil
 	}
@@ -336,10 +344,17 @@ func (p *MetaTubeProvider) convertMovieInfoToMatch(movie *MetaTubeMovieInfo) *Ma

 	year := parseYearFromDate(movie.ReleaseDate)

-	posterURL := firstNonEmpty(movie.BigCoverURL, movie.CoverURL, movie.BigThumbURL, movie.ThumbURL)
-	backdropURL := posterURL
-	if len(movie.PreviewImages) > 0 && movie.PreviewImages[0] != "" {
-		backdropURL = movie.PreviewImages[0]
+	posterSource := firstNonEmpty(movie.BigCoverURL, movie.CoverURL, movie.BigThumbURL, movie.ThumbURL)
+	posterURL, backdropURL := metaTubeArtworkURLs(cfg, movie.Provider, movie.ID, posterSource)
+	if posterURL == "" {
+		posterURL = firstNonEmpty(movie.BigThumbURL, movie.ThumbURL, movie.BigCoverURL, movie.CoverURL)
+	}
+	if backdropURL == "" {
+		if len(movie.PreviewImages) > 0 && movie.PreviewImages[0] != "" {
+			backdropURL = movie.PreviewImages[0]
+		} else {
+			backdropURL = firstNonEmpty(movie.BigCoverURL, movie.CoverURL, posterURL)
+		}
 	}

 	genres := make([]string, 0, len(movie.Genres)+len(movie.Actors)+4)
@@ -369,6 +384,7 @@ func (p *MetaTubeProvider) convertMovieInfoToMatch(movie *MetaTubeMovieInfo) *Ma
 	}

 	return &Match{
+		Provider:     "metatube",
 		MediaType:    "adult",
 		Title:        formattedTitle,
 		OriginalName: code,
@@ -385,6 +401,37 @@ func (p *MetaTubeProvider) convertMovieInfoToMatch(movie *MetaTubeMovieInfo) *Ma
 	}
 }

+func metaTubeArtworkURLs(cfg MetaTubeConfig, provider, id, posterSource string) (string, string) {
+	serverURL := strings.TrimRight(strings.TrimSpace(cfg.ServerURL), "/")
+	provider = strings.TrimSpace(provider)
+	id = strings.TrimSpace(id)
+	if serverURL == "" || provider == "" || id == "" {
+		return "", ""
+	}
+
+	imageURL := func(kind string, primary bool) string {
+		base := fmt.Sprintf("%s/v1/images/%s/%s/%s", serverURL, kind, url.PathEscape(provider), url.PathEscape(id))
+		values := url.Values{}
+		values.Set("quality", "90")
+		if primary {
+			values.Set("ratio", "-1")
+			if strings.TrimSpace(posterSource) != "" {
+				values.Set("url", strings.TrimSpace(posterSource))
+			}
+			if cfg.CropCover {
+				values.Set("pos", "1")
+				values.Set("auto", "true")
+			} else {
+				values.Set("pos", "-1")
+				values.Set("auto", "false")
+			}
+		}
+		return base + "?" + values.Encode()
+	}
+
+	return imageURL("primary", true), imageURL("backdrop", false)
+}
+
 func parseYearFromDate(dateStr string) int {
 	dateStr = strings.TrimSpace(dateStr)
 	if len(dateStr) >= 4 {
@@ -62,6 +62,9 @@ func TestMetaTubeProviderSearch(t *testing.T) {
 		t.Fatalf("expected 1 match, got %d", len(matches))
 	}
 	m := matches[0]
+	if m.Provider != "metatube" {
+		t.Errorf("expected provider metatube, got %q", m.Provider)
+	}
 	if m.OriginalName != "IPX-235" {
 		t.Errorf("expected original name IPX-235, got %s", m.OriginalName)
 	}
@@ -74,6 +77,12 @@ func TestMetaTubeProviderSearch(t *testing.T) {
 	if len(m.Genres) != 1 || m.Genres[0] != "相沢みなみ" {
 		t.Errorf("unexpected genres: %v", m.Genres)
 	}
+	if want := server.URL + "/v1/images/primary/javdb/123456?auto=false&pos=-1&quality=90&ratio=-1&url=https%3A%2F%2Fexample.com%2Fcover.jpg"; m.PosterURL != want {
+		t.Errorf("poster URL = %q, want %q", m.PosterURL, want)
+	}
+	if want := server.URL + "/v1/images/backdrop/javdb/123456?quality=90"; m.BackdropURL != want {
+		t.Errorf("backdrop URL = %q, want %q", m.BackdropURL, want)
+	}
 }

 func TestMetaTubeProviderGetMovie(t *testing.T) {
@@ -112,6 +121,7 @@ func TestMetaTubeProviderGetMovie(t *testing.T) {
 	provider := NewMetaTubeProvider(zap.NewNop())
 	cfg := MetaTubeConfig{
 		ServerURL: server.URL,
+		CropCover: true,
 	}

 	match, err := provider.GetMovie(context.Background(), cfg, "javdb", "123456")
@@ -124,11 +134,11 @@ func TestMetaTubeProviderGetMovie(t *testing.T) {
 	if match.Overview != "超绝美少女相沢みなみ出道作品！" {
 		t.Errorf("unexpected overview: %s", match.Overview)
 	}
-	if match.PosterURL != "https://example.com/big_cover.jpg" {
-		t.Errorf("unexpected poster URL: %s", match.PosterURL)
+	if want := server.URL + "/v1/images/primary/javdb/123456?auto=true&pos=1&quality=90&ratio=-1&url=https%3A%2F%2Fexample.com%2Fbig_cover.jpg"; match.PosterURL != want {
+		t.Errorf("poster URL = %q, want %q", match.PosterURL, want)
 	}
-	if match.BackdropURL != "https://example.com/preview1.jpg" {
-		t.Errorf("unexpected backdrop URL: %s", match.BackdropURL)
+	if want := server.URL + "/v1/images/backdrop/javdb/123456?quality=90"; match.BackdropURL != want {
+		t.Errorf("backdrop URL = %q, want %q", match.BackdropURL, want)
 	}
 	if match.Year != 2018 {
 		t.Errorf("expected year 2018, got %d", match.Year)
@@ -55,7 +55,7 @@ func (o *OrganizerService) lookupOrganizeMetadata(ctx context.Context, src, sour
 				continue
 			}
 		}
-		match := o.scraper.lookup(ctx, lib, media, candidate, year)
+		match := o.scraper.lookup(ctx, lib, media, candidate, year, false)
 		if match != nil && strings.TrimSpace(match.Title) != "" {
 			if !organizeMetadataMatchTrusted(candidate, year, match) {
 				if cache != nil {
@@ -43,7 +43,7 @@ var artworkSidecarSuffixes = []string{
 // artworkSidecarExtensions are the image extensions a sidecar may use. Both
 // "base-poster.jpg" (bare separator) and "base.poster.jpg" (dotted separator)
 // rely on suffix matching, so we probe the common image extensions.
-var artworkSidecarExtensions = []string{".jpg", ".jpeg", ".png", ".webp", ".gif", ".bmp", ".tbn"}
+var artworkSidecarExtensions = []string{".jpg", ".jpeg", ".png", ".webp", ".gif", ".bmp", ".tbn", ".img"}

 // transferSidecarArtwork moves/copies/links the scraped poster/backdrop
 // sidecar files alongside its media using the same transfer mode, mirroring
@@ -84,6 +84,7 @@ func transferSidecarArtwork(srcMedia, dstMedia string, mode TransferMode) error
 	if dstBase == "" {
 		dstBase = strings.TrimSuffix(filepath.Base(dstMedia), filepath.Ext(dstMedia))
 	}
+	srcAdultCode := AdultCodeFromMediaPath(srcMedia)
 	for _, src := range sources {
 		name := filepath.Base(src)
 		// Remap any legacy "Title.mkv-poster.jpg" onto the shared destination stem.
@@ -97,7 +98,10 @@ func transferSidecarArtwork(srcMedia, dstMedia string, mode TransferMode) error
 			}
 		}
 		dstName := name
-		if suffix != "" && dstBase != "" {
+		if srcAdultCode != "" && strings.HasPrefix(strings.ToLower(name), strings.ToLower(srcAdultCode)) {
+			// Adult sidecars are keyed by code (e.g. ADN-188-poster.jpg) and should
+			// follow the media without being renamed to the display title stem.
+		} else if suffix != "" && dstBase != "" {
 			dstName = dstBase + suffix
 		}
 		dst := filepath.Join(dstDir, dstName)
@@ -27,12 +27,13 @@ func NewProfileService(log *zap.Logger, repo *repository.Container) *ProfileServ
 // ProfileUpdate is the patch object accepted by UpdateProfile. Empty
 // fields are ignored so the same payload can be reused across screens.
 type ProfileUpdate struct {
-	Username  *string `json:"username,omitempty"`
-	Nickname  *string `json:"nickname,omitempty"`
-	Email     *string `json:"email,omitempty"`
-	AvatarURL *string `json:"avatar_url,omitempty"`
-	HideAdult *bool   `json:"hide_adult,omitempty"`
-	Password  string  `json:"password,omitempty"`
+	Username            *string `json:"username,omitempty"`
+	Nickname            *string `json:"nickname,omitempty"`
+	Email               *string `json:"email,omitempty"`
+	AvatarURL           *string `json:"avatar_url,omitempty"`
+	HideAdult           *bool   `json:"hide_adult,omitempty"`
+	SubtitleChineseMode *string `json:"subtitle_chinese_mode,omitempty"`
+	Password            string  `json:"password,omitempty"`
 }

 // UpdateProfile applies a non-credential patch to the user.
@@ -73,6 +74,15 @@ func (p *ProfileService) UpdateProfile(ctx context.Context, userID string, patch
 	if patch.HideAdult != nil {
 		updates["hide_adult"] = *patch.HideAdult
 	}
+	if patch.SubtitleChineseMode != nil {
+		mode := strings.ToLower(strings.TrimSpace(*patch.SubtitleChineseMode))
+		switch mode {
+		case "original", "simplified", "traditional":
+			updates["subtitle_chinese_mode"] = mode
+		default:
+			return nil, errors.New("subtitle_chinese_mode must be original, simplified, or traditional")
+		}
+	}
 	if len(updates) > 0 {
 		if err := p.repo.DB.Model(&model.User{}).Where("id = ?", userID).
 			Updates(updates).Error; err != nil {
@@ -0,0 +1,60 @@
+package service
+
+import (
+	"testing"
+
+	"github.com/glebarez/sqlite"
+	"go.uber.org/zap"
+	"gorm.io/gorm"
+
+	"github.com/truewhile/MeBox/internal/model"
+	"github.com/truewhile/MeBox/internal/repository"
+)
+
+func TestProfileSubtitleChineseModePersistsAndValidates(t *testing.T) {
+	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := db.AutoMigrate(&model.User{}); err != nil {
+		t.Fatal(err)
+	}
+
+	repos := repository.New(db)
+	svc := NewProfileService(zap.NewNop(), repos)
+	user := &model.User{
+		Username:     "subtitle-viewer",
+		PasswordHash: "hash",
+		Role:         "user",
+		IsActive:     true,
+	}
+	if err := repos.User.Create(t.Context(), user); err != nil {
+		t.Fatal(err)
+	}
+
+	traditional := "traditional"
+	updated, err := svc.UpdateProfile(t.Context(), user.ID, ProfileUpdate{
+		SubtitleChineseMode: &traditional,
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if updated.SubtitleChineseMode != traditional {
+		t.Fatalf("subtitle mode = %q, want %q", updated.SubtitleChineseMode, traditional)
+	}
+
+	invalid := "automatic"
+	if _, err := svc.UpdateProfile(t.Context(), user.ID, ProfileUpdate{
+		SubtitleChineseMode: &invalid,
+	}); err == nil {
+		t.Fatal("invalid subtitle mode should be rejected")
+	}
+
+	reloaded, err := repos.User.FindByID(t.Context(), user.ID)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if reloaded.SubtitleChineseMode != traditional {
+		t.Fatalf("invalid update changed subtitle mode to %q", reloaded.SubtitleChineseMode)
+	}
+}
@@ -5,8 +5,10 @@ import (
 	"encoding/json"
 	"fmt"
 	"net/http"
+	"regexp"
 	"strconv"
 	"strings"
+	"sync"
 	"time"

 	"go.uber.org/zap"
@@ -61,8 +63,9 @@ func NewRecognitionWordsService(log *zap.Logger, repo *repository.Container) *Re
 }

 func (s *RecognitionWordsService) Config(ctx context.Context) RecognitionWordsConfig {
-	cfg := recognitionWordsConfig(ctx, s.repo)
-	cfg.RuleCount = len(parseRecognitionWordRules(recognitionWordsCombinedText(cfg)))
+	cfg, rules := recognitionWordsRuntime(ctx, s.repo)
+	cfg = cloneRecognitionWordsConfig(cfg)
+	cfg.RuleCount = len(rules)
 	return cfg
 }

@@ -80,7 +83,11 @@ func (s *RecognitionWordsService) SaveConfig(ctx context.Context, cfg Recognitio
 	if err != nil {
 		return err
 	}
-	return s.repo.Setting.Set(ctx, RecognitionWordsSharedURLsKey, string(rawURLs))
+	if err := s.repo.Setting.Set(ctx, RecognitionWordsSharedURLsKey, string(rawURLs)); err != nil {
+		return err
+	}
+	invalidateRecognitionWordsRuntime(s.repo)
+	return nil
 }

 func (s *RecognitionWordsService) SyncShared(ctx context.Context) (RecognitionWordsConfig, error) {
@@ -104,6 +111,7 @@ func (s *RecognitionWordsService) SyncShared(ctx context.Context) (RecognitionWo
 	if err := s.repo.Setting.Set(ctx, RecognitionWordsSyncedAtKey, now); err != nil {
 		return cfg, err
 	}
+	invalidateRecognitionWordsRuntime(s.repo)
 	return s.Config(ctx), nil
 }

@@ -120,11 +128,10 @@ func (s *RecognitionWordsService) Test(ctx context.Context, input string) Recogn
 }

 func ApplyRecognitionWords(ctx context.Context, repo *repository.Container, raw string) string {
-	cfg := recognitionWordsConfig(ctx, repo)
-	if !cfg.Enabled {
+	cfg, rules := recognitionWordsRuntime(ctx, repo)
+	if !cfg.Enabled || len(rules) == 0 {
 		return raw
 	}
-	rules := parseRecognitionWordRules(recognitionWordsCombinedText(cfg))
 	return applyRecognitionWordRules(raw, rules)
 }

@@ -189,9 +196,69 @@ func normalizeRecognitionWordURLs(values []string) []string {
 type recognitionWordRule struct {
 	raw         string
 	block       string
+	blockRE     *regexp.Regexp
 	replaceFrom string
 	replaceTo   string
+	replaceRE   *regexp.Regexp
 	offsetLeft  string
 	offsetRight string
 	offsetExpr  string
+	offsetRE    *regexp.Regexp
+}
+
+// recognitionWordsRuntime caches the parsed rule set (with pre-compiled
+// regexes) per repository. Reading five settings rows and parsing/recompiling
+// the whole shared word list used to happen on every query candidate, which is
+// the scraper's hottest path. Writes through SaveConfig/SyncShared invalidate
+// the entry immediately; the TTL only bounds staleness for out-of-process edits.
+type recognitionWordsRuntimeEntry struct {
+	repo      *repository.Container
+	cfg       RecognitionWordsConfig
+	rules     []recognitionWordRule
+	expiresAt time.Time
+}
+
+const recognitionWordsRuntimeTTL = 30 * time.Second
+
+var recognitionWordsRuntimeCache struct {
+	sync.RWMutex
+	entry recognitionWordsRuntimeEntry
+	valid bool
+}
+
+func recognitionWordsRuntime(ctx context.Context, repo *repository.Container) (RecognitionWordsConfig, []recognitionWordRule) {
+	now := time.Now()
+	recognitionWordsRuntimeCache.RLock()
+	cached := recognitionWordsRuntimeCache.entry
+	hit := recognitionWordsRuntimeCache.valid && cached.repo == repo && now.Before(cached.expiresAt)
+	recognitionWordsRuntimeCache.RUnlock()
+	if hit {
+		return cached.cfg, cached.rules
+	}
+
+	cfg := recognitionWordsConfig(ctx, repo)
+	rules := parseRecognitionWordRules(recognitionWordsCombinedText(cfg))
+	recognitionWordsRuntimeCache.Lock()
+	recognitionWordsRuntimeCache.entry = recognitionWordsRuntimeEntry{
+		repo:      repo,
+		cfg:       cfg,
+		rules:     rules,
+		expiresAt: now.Add(recognitionWordsRuntimeTTL),
+	}
+	recognitionWordsRuntimeCache.valid = true
+	recognitionWordsRuntimeCache.Unlock()
+	return cfg, rules
+}
+
+func invalidateRecognitionWordsRuntime(repo *repository.Container) {
+	recognitionWordsRuntimeCache.Lock()
+	if recognitionWordsRuntimeCache.entry.repo == repo {
+		recognitionWordsRuntimeCache.valid = false
+	}
+	recognitionWordsRuntimeCache.Unlock()
+}
+
+func cloneRecognitionWordsConfig(cfg RecognitionWordsConfig) RecognitionWordsConfig {
+	cfg.SharedURLs = append([]string(nil), cfg.SharedURLs...)
+	return cfg
 }
@@ -0,0 +1,49 @@
+package service
+
+import (
+	"testing"
+
+	"go.uber.org/zap"
+)
+
+// The rule set is cached process-wide, so a config write must invalidate it
+// immediately; otherwise the admin would have to wait out the TTL before a
+// saved word list takes effect.
+func TestRecognitionWordsCacheInvalidatedBySaveConfig(t *testing.T) {
+	repos := newOrganizerTestRepo(t)
+	svc := NewRecognitionWordsService(zap.NewNop(), repos)
+
+	if err := svc.SaveConfig(t.Context(), RecognitionWordsConfig{
+		Enabled:   true,
+		LocalText: "BADWORD => 好标题",
+	}); err != nil {
+		t.Fatal(err)
+	}
+	if got := ApplyRecognitionWords(t.Context(), repos, "BADWORD"); got != "好标题" {
+		t.Fatalf("first apply = %q, want 好标题", got)
+	}
+
+	if err := svc.SaveConfig(t.Context(), RecognitionWordsConfig{
+		Enabled:   true,
+		LocalText: "BADWORD => 新标题",
+	}); err != nil {
+		t.Fatal(err)
+	}
+	if got := ApplyRecognitionWords(t.Context(), repos, "BADWORD"); got != "新标题" {
+		t.Fatalf("cached rules were not invalidated after SaveConfig: got %q, want 新标题", got)
+	}
+}
+
+func TestRecognitionWordsDisabledReturnsRawInput(t *testing.T) {
+	repos := newOrganizerTestRepo(t)
+	svc := NewRecognitionWordsService(zap.NewNop(), repos)
+	if err := svc.SaveConfig(t.Context(), RecognitionWordsConfig{
+		Enabled:   false,
+		LocalText: "BADWORD => 好标题",
+	}); err != nil {
+		t.Fatal(err)
+	}
+	if got := ApplyRecognitionWords(t.Context(), repos, "BADWORD"); got != "BADWORD" {
+		t.Fatalf("disabled recognition words changed input: got %q", got)
+	}
+}
@@ -31,6 +31,11 @@ func parseRecognitionWordRule(line string) recognitionWordRule {
 		case strings.Contains(part, "<>") && strings.Contains(part, ">>"):
 			beforeAfter := strings.SplitN(part, ">>", 2)
 			bounds := strings.SplitN(beforeAfter[0], "<>", 2)
+			// A malformed rule without "<>" would otherwise index past the
+			// slice; word lists are fetched from the network, so stay defensive.
+			if len(bounds) < 2 {
+				continue
+			}
 			rule.offsetLeft = strings.TrimSpace(bounds[0])
 			rule.offsetRight = strings.TrimSpace(bounds[1])
 			rule.offsetExpr = strings.TrimSpace(beforeAfter[1])
@@ -38,56 +43,89 @@ func parseRecognitionWordRule(line string) recognitionWordRule {
 			rule.block = part
 		}
 	}
+	compileRecognitionWordRule(&rule)
 	return rule
 }

+var recognitionReplacementRE = regexp.MustCompile(`\\([0-9]+)`)
+
 func normalizeRecognitionReplacement(value string) string {
-	re := regexp.MustCompile(`\\([0-9]+)`)
-	return re.ReplaceAllString(value, "$$$1")
+	return recognitionReplacementRE.ReplaceAllString(value, "$$$1")
+}
+
+// compileRecognitionWordRule pre-compiles every pattern in a rule so the hot
+// clean-query path never recompiles regexes per candidate.
+func compileRecognitionWordRule(rule *recognitionWordRule) {
+	if rule == nil {
+		return
+	}
+	if rule.block != "" {
+		if re, err := regexp.Compile(rule.block); err == nil {
+			rule.blockRE = re
+		}
+	}
+	if rule.replaceFrom != "" {
+		if re, err := regexp.Compile(rule.replaceFrom); err == nil {
+			rule.replaceRE = re
+		}
+	}
+	if rule.offsetExpr != "" && (rule.offsetLeft != "" || rule.offsetRight != "") {
+		if re, err := compileRecognitionOffsetRE(rule.offsetLeft, rule.offsetRight); err == nil {
+			rule.offsetRE = re
+		}
+	}
+}
+
+func compileRecognitionOffsetRE(left, right string) (*regexp.Regexp, error) {
+	leftPattern := firstNonEmpty(left, `^`)
+	rightPattern := firstNonEmpty(right, `$`)
+	return regexp.Compile(`(?i)(` + leftPattern + `)(\d{1,5})(` + rightPattern + `)`)
 }

 func applyRecognitionWordRules(raw string, rules []recognitionWordRule) string {
 	out := strings.TrimSpace(raw)
 	for _, rule := range rules {
 		if rule.block != "" {
-			out = applyRecognitionBlock(out, rule.block)
+			out = applyRecognitionBlock(out, rule)
 		}
 		if rule.replaceFrom != "" {
-			out = applyRecognitionReplace(out, rule.replaceFrom, rule.replaceTo)
+			out = applyRecognitionReplace(out, rule)
 		}
 		if rule.offsetLeft != "" || rule.offsetRight != "" {
-			out = applyRecognitionOffset(out, rule.offsetLeft, rule.offsetRight, rule.offsetExpr)
+			out = applyRecognitionOffset(out, rule)
 		}
 	}
 	return strings.Join(strings.Fields(out), " ")
 }

-func applyRecognitionBlock(raw, block string) string {
-	if re, err := regexp.Compile(block); err == nil {
-		return re.ReplaceAllString(raw, " ")
+func applyRecognitionBlock(raw string, rule recognitionWordRule) string {
+	if rule.blockRE != nil {
+		return rule.blockRE.ReplaceAllString(raw, " ")
 	}
-	return strings.ReplaceAll(raw, block, " ")
+	return strings.ReplaceAll(raw, rule.block, " ")
 }

-func applyRecognitionReplace(raw, from, to string) string {
-	if re, err := regexp.Compile(from); err == nil {
-		return re.ReplaceAllString(raw, to)
+func applyRecognitionReplace(raw string, rule recognitionWordRule) string {
+	if rule.replaceRE != nil {
+		return rule.replaceRE.ReplaceAllString(raw, rule.replaceTo)
 	}
-	return strings.ReplaceAll(raw, from, to)
+	return strings.ReplaceAll(raw, rule.replaceFrom, rule.replaceTo)
 }

-func applyRecognitionOffset(raw, left, right, expr string) string {
-	if strings.TrimSpace(expr) == "" {
+func applyRecognitionOffset(raw string, rule recognitionWordRule) string {
+	if strings.TrimSpace(rule.offsetExpr) == "" {
 		return raw
 	}
-	leftPattern := firstNonEmpty(left, `^`)
-	rightPattern := firstNonEmpty(right, `$`)
-	re, err := regexp.Compile(`(?i)(` + leftPattern + `)(\d{1,5})(` + rightPattern + `)`)
-	if err != nil {
-		return raw
+	re := rule.offsetRE
+	if re == nil {
+		compiled, err := compileRecognitionOffsetRE(rule.offsetLeft, rule.offsetRight)
+		if err != nil {
+			return raw
+		}
+		re = compiled
 	}
 	return re.ReplaceAllStringFunc(raw, func(match string) string {
-		return applyRecognitionOffsetMatch(re, match, expr)
+		return applyRecognitionOffsetMatch(re, match, rule.offsetExpr)
 	})
 }

@@ -93,7 +93,11 @@ func (s *ScannerService) readLocalScanMetadata(lib *model.Library, root *model.L
 	if root != nil && strings.TrimSpace(root.Path) != "" {
 		rootPath = root.Path
 	}
-	localMeta, err := ReadLocalMetadata(path, rootPath, librarySupportsSeasons(lib) || parsedSeason > 0 || parsedEpisode > 0)
+	seriesLike := librarySupportsSeasons(lib) || parsedSeason > 0 || parsedEpisode > 0
+	if mediaLooksLikeTheatricalFeature(&model.Media{Path: path}) {
+		seriesLike = false
+	}
+	localMeta, err := ReadLocalMetadata(path, rootPath, seriesLike)
 	if err != nil {
 		s.log.Warn("read local metadata failed", zap.String("path", path), zap.Error(err))
 	}
@@ -196,7 +200,7 @@ func (s *ScannerService) writeLocalScanMedia(in localScanWriteInput) {
 		in.writeBatch.AddWithAfter(in.path, in.media, in.after)
 		return
 	}
-	if err := s.repo.Media.Upsert(in.ctx, in.media); err != nil {
+	if err := s.repo.Media.UpsertWithAliases(in.ctx, in.media, missingSTRMPathAliases(in.path)); err != nil {
 		addScanError(in.res, in.path, err)
 		s.log.Warn("upsert media failed", zap.String("path", in.path), zap.Error(err))
 		return
@@ -248,8 +252,10 @@ func (s *ScannerService) duplicateByFileID(ctx context.Context, fileID, path str
 }

 func (s *ScannerService) mediaPathExists(ctx context.Context, path string) bool {
+	paths := []string{path}
+	paths = append(paths, missingSTRMPathAliases(path)...)
 	var count int64
 	err := s.repo.DB.WithContext(ctx).Unscoped().Model(&model.Media{}).
-		Where("path = ?", path).Count(&count).Error
+		Where("path IN ?", paths).Count(&count).Error
 	return err == nil && count > 0
 }
@@ -69,6 +69,49 @@ func TestScanLibraryUsesLocalMetadata(t *testing.T) {
 	}
 }

+func TestScanAnimeTheatricalFolderUsesMovieNFO(t *testing.T) {
+	root := t.TempDir()
+	showDir := filepath.Join(root, "摇曳露营△ (2018)")
+	movieDir := filepath.Join(showDir, "摇曳露营△ 剧场版 (2022)")
+	if err := os.MkdirAll(movieDir, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(showDir, "tvshow.nfo"), []byte(
+		`<tvshow><title>错误的剧集标题</title><tmdbid>76075</tmdbid><year>2018</year></tvshow>`,
+	), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	mediaPath := filepath.Join(movieDir, "Eiga.Yurukyan.2022.Bluray.mkv")
+	if err := os.WriteFile(mediaPath, []byte("x"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(nfoPath(mediaPath), []byte(
+		`<movie><title>摇曳露营△ 剧场版</title><tmdbid>566466</tmdbid><year>2022</year></movie>`,
+	), 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	db := newServiceTestDB(t, &model.Library{}, &model.Media{}, &model.Setting{})
+	repos := repository.New(db)
+	lib := model.Library{Name: "动漫", Path: root, Type: "anime", Enabled: true}
+	if err := repos.Library.Create(t.Context(), &lib); err != nil {
+		t.Fatal(err)
+	}
+
+	scanner := NewScannerService(&config.Config{}, zap.NewNop(), repos, NewHub(zap.NewNop()), nil, nil)
+	if _, err := scanner.ScanLibrary(t.Context(), lib.ID); err != nil {
+		t.Fatal(err)
+	}
+
+	var media model.Media
+	if err := db.First(&media, "path = ?", mediaPath).Error; err != nil {
+		t.Fatal(err)
+	}
+	if media.Title != "摇曳露营△ 剧场版" || media.TMDbID != 566466 || media.Year != 2022 {
+		t.Fatalf("theatrical movie metadata = title %q tmdb %d year %d", media.Title, media.TMDbID, media.Year)
+	}
+}
+
 func TestScanLibraryDoesNotMarkArtworkOnlyAsMatched(t *testing.T) {
 	root := t.TempDir()
 	mediaPath := filepath.Join(root, "SSIS-001-CD1.mp4")
@@ -7,6 +7,7 @@ import (
 	"go.uber.org/zap"

 	"github.com/truewhile/MeBox/internal/model"
+	"github.com/truewhile/MeBox/internal/repository"
 )

 type localMediaWriteBatch struct {
@@ -18,9 +19,10 @@ type localMediaWriteBatch struct {
 }

 type localMediaWriteItem struct {
-	path  string
-	media *model.Media
-	after func()
+	path    string
+	media   *model.Media
+	aliases []string
+	after   func()
 }

 func newLocalMediaWriteBatch(scanner *ScannerService, ctx context.Context, res *ScanResult, limit int) *localMediaWriteBatch {
@@ -41,7 +43,12 @@ func (b *localMediaWriteBatch) AddWithAfter(path string, media *model.Media, aft
 	if media.ScrapeStatus == "" {
 		media.ScrapeStatus = "pending"
 	}
-	b.items = append(b.items, localMediaWriteItem{path: path, media: media, after: after})
+	b.items = append(b.items, localMediaWriteItem{
+		path:    path,
+		media:   media,
+		aliases: missingSTRMPathAliases(path),
+		after:   after,
+	})
 	if len(b.items) >= b.limit {
 		b.Flush()
 	}
@@ -53,39 +60,35 @@ func (b *localMediaWriteBatch) Flush() {
 	}
 	items := b.items
 	b.items = nil
-	media := make([]model.Media, 0, len(items))
-	for _, item := range items {
-		if item.media != nil {
-			media = append(media, *item.media)
-		}
-	}
-	if len(media) == 0 {
-		return
-	}
-	existingPaths := b.existingPaths(items)
-	upsertItems := make([]*model.Media, 0, len(items))
-	upsertAfter := make([]func(), 0, len(items))
+
+	existingPaths, lookupOK := b.existingPathOrAliasSet(items)
+	upsertItems := make([]localMediaWriteItem, 0, len(items))
 	createItems := make([]localMediaWriteItem, 0, len(items))
-	createMedia := make([]model.Media, 0, len(items))
 	for _, item := range items {
 		if item.media == nil {
 			continue
 		}
-		if existingPaths[filepath.Clean(item.media.Path)] {
-			// 已存在行：攒起来在一个事务里逐条 upsert（一批一次提交）。
-			after := item.after
-			upsertItems = append(upsertItems, item.media)
-			upsertAfter = append(upsertAfter, after)
+		// If the alias lookup failed, route through UpsertWithAliases instead of
+		// direct-create. That is slower but cannot create a duplicate row.
+		if !lookupOK || mediaPathOrAliasExists(item.media.Path, item.aliases, existingPaths) {
+			upsertItems = append(upsertItems, item)
 			continue
 		}
 		createItems = append(createItems, item)
-		createMedia = append(createMedia, *item.media)
 	}
-	b.flushUpserts(items, upsertItems, upsertAfter)
-	if len(createMedia) == 0 {
+
+	b.flushUpserts(upsertItems)
+	if len(createItems) == 0 {
 		b.publish()
 		return
 	}
+
+	createMedia := make([]model.Media, 0, len(createItems))
+	for _, item := range createItems {
+		if item.media != nil {
+			createMedia = append(createMedia, *item.media)
+		}
+	}
 	if err := b.scanner.repo.DB.WithContext(b.ctx).CreateInBatches(&createMedia, b.limit).Error; err == nil {
 		b.res.Added += len(createMedia)
 		for _, item := range createItems {
@@ -96,12 +99,13 @@ func (b *localMediaWriteBatch) Flush() {
 		b.publish()
 		return
 	}
+
 	for _, item := range createItems {
 		if item.media == nil {
 			continue
 		}
 		wasExisting := b.mediaPathExists(item.media.Path)
-		if err := b.scanner.repo.Media.Upsert(b.ctx, item.media); err != nil {
+		if err := b.scanner.repo.Media.UpsertWithAliases(b.ctx, item.media, item.aliases); err != nil {
 			addScanError(b.res, item.path, err)
 			b.scanner.log.Warn("upsert media failed", zap.String("path", item.path), zap.Error(err))
 			continue
@@ -118,47 +122,90 @@ func (b *localMediaWriteBatch) Flush() {
 	b.publish()
 }

-func (b *localMediaWriteBatch) existingPaths(items []localMediaWriteItem) map[string]bool {
+// existingPathOrAliasSet loads exact and alias paths in bounded query chunks. Aliases
+// have already been filtered against the filesystem by AddWithAfter, so an
+// existing keep_ext sibling is never treated as a rename.
+func (b *localMediaWriteBatch) existingPathOrAliasSet(items []localMediaWriteItem) (map[string]bool, bool) {
 	out := map[string]bool{}
 	if b == nil || b.scanner == nil || b.scanner.repo == nil || b.scanner.repo.DB == nil || len(items) == 0 {
-		return out
+		return out, false
+	}
+	seen := make(map[string]struct{}, len(items)*2)
+	paths := make([]string, 0, len(items)*2)
+	add := func(path string) {
+		path = filepath.Clean(path)
+		if path == "" || path == "." {
+			return
+		}
+		if _, ok := seen[path]; ok {
+			return
+		}
+		seen[path] = struct{}{}
+		paths = append(paths, path)
 	}
-	paths := make([]string, 0, len(items))
 	for _, item := range items {
 		if item.media == nil || item.media.Path == "" {
 			continue
 		}
-		paths = append(paths, item.media.Path)
+		add(item.media.Path)
+		for _, alias := range item.aliases {
+			add(alias)
+		}
 	}
 	if len(paths) == 0 {
-		return out
+		return out, true
 	}
-	var rows []string
-	if err := b.scanner.repo.DB.WithContext(b.ctx).
-		Unscoped().
-		Model(&model.Media{}).
-		Where("path IN ?", paths).
-		Pluck("path", &rows).Error; err != nil {
-		b.scanner.log.Debug("load existing media paths for scan batch failed", zap.Error(err))
-		return out
+	// Keep SQL variables below the legacy SQLite limit (999). A batch can
+	// contain 100 STRM rows and every row has many sibling aliases.
+	const pathLookupChunk = 400
+	for start := 0; start < len(paths); start += pathLookupChunk {
+		end := start + pathLookupChunk
+		if end > len(paths) {
+			end = len(paths)
+		}
+		var rows []string
+		if err := b.scanner.repo.DB.WithContext(b.ctx).
+			Unscoped().
+			Model(&model.Media{}).
+			Where("path IN ?", paths[start:end]).
+			Pluck("path", &rows).Error; err != nil {
+			b.scanner.log.Debug("load existing media paths for scan batch failed", zap.Error(err))
+			return nil, false
+		}
+		for _, path := range rows {
+			out[filepath.Clean(path)] = true
+		}
 	}
-	for _, path := range rows {
-		out[filepath.Clean(path)] = true
-	}
-	return out
+	return out, true
 }

-// flushUpserts 把已存在行的 upsert 攒成一个事务（一次提交/一组 fsync）。
-// 整批失败（如单条数据触发约束）时退回逐条 Upsert，只丢真正坏的那几条。
-func (b *localMediaWriteBatch) flushUpserts(allItems []localMediaWriteItem, upsertItems []*model.Media, upsertAfter []func()) {
+func mediaPathOrAliasExists(path string, aliases []string, existing map[string]bool) bool {
+	if existing[filepath.Clean(path)] {
+		return true
+	}
+	for _, alias := range aliases {
+		if existing[filepath.Clean(alias)] {
+			return true
+		}
+	}
+	return false
+}
+
+// flushUpserts 把已存在或可迁移路径的行攒成一个事务（一次提交/一组 fsync）。
+// 整批失败（如单条数据触发约束）时退回逐条 upsert，只丢真正坏的那几条。
+func (b *localMediaWriteBatch) flushUpserts(upsertItems []localMediaWriteItem) {
 	if len(upsertItems) == 0 {
 		return
 	}
-	if err := b.scanner.repo.Media.UpsertBatch(b.ctx, upsertItems); err == nil {
+	batchItems := make([]repository.MediaUpsertItem, 0, len(upsertItems))
+	for _, item := range upsertItems {
+		batchItems = append(batchItems, repository.MediaUpsertItem{Media: item.media, AliasPaths: item.aliases})
+	}
+	if err := b.scanner.repo.Media.UpsertBatchWithAliases(b.ctx, batchItems); err == nil {
 		b.res.Updated += len(upsertItems)
-		for _, after := range upsertAfter {
-			if after != nil {
-				after()
+		for _, item := range upsertItems {
+			if item.after != nil {
+				item.after()
 			}
 		}
 		return
@@ -166,13 +213,7 @@ func (b *localMediaWriteBatch) flushUpserts(allItems []localMediaWriteItem, upse
 		b.scanner.log.Warn("batch upsert failed; falling back to per-item upsert",
 			zap.Int("items", len(upsertItems)))
 	}
-	// 兜底：按原始顺序找回每个条目的 path/after（两个切片同序但可能含 nil）。
-	idx := 0
-	for _, item := range allItems {
-		if item.media == nil || idx >= len(upsertItems) || upsertItems[idx] != item.media {
-			continue
-		}
-		idx++
+	for _, item := range upsertItems {
 		b.upsertExistingItem(item)
 	}
 }
@@ -181,7 +222,7 @@ func (b *localMediaWriteBatch) upsertExistingItem(item localMediaWriteItem) {
 	if item.media == nil {
 		return
 	}
-	if err := b.scanner.repo.Media.Upsert(b.ctx, item.media); err != nil {
+	if err := b.scanner.repo.Media.UpsertWithAliases(b.ctx, item.media, item.aliases); err != nil {
 		addScanError(b.res, item.path, err)
 		b.scanner.log.Warn("upsert media failed", zap.String("path", item.path), zap.Error(err))
 		return
@@ -5,13 +5,15 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+	"time"

 	"go.uber.org/zap"

 	"github.com/truewhile/MeBox/internal/model"
 )

-// RemovePath 物理删除磁盘上已不存在的媒体记录。
+// RemovePath 移除磁盘上已不存在的媒体记录。普通的删除仍做物理删除；
+// 可确认是 STRM 扩展名改名的路径则先保留软删除墓碑，供后续 ingest 继承元数据。
 func (s *ScannerService) RemovePath(ctx context.Context, path string) (int64, error) {
 	if _, err := os.Stat(path); err == nil {
 		return 0, nil // still exists; nothing to remove
@@ -30,24 +32,64 @@ func (s *ScannerService) RemovePath(ctx context.Context, path string) (int64, er
 		Find(&rows).Error; err != nil {
 		return 0, err
 	}
-	ids := make([]string, 0, len(rows))
+	softIDs := make([]string, 0, len(rows))
+	hardIDs := make([]string, 0, len(rows))
 	for _, row := range rows {
 		// LIKE 里的 % _ 是通配符（候选集只会偏大），用 Go 前缀精确过滤，
 		// 避免对含 % / _ 的路径误删。
-		if row.Path == path || strings.HasPrefix(filepath.Clean(row.Path), prefix) {
-			ids = append(ids, row.ID)
+		if row.Path != path && !strings.HasPrefix(filepath.Clean(row.Path), prefix) {
+			continue
 		}
+		// A vanished STRM with a live sibling (foo.strm <-> foo.mkv.strm)
+		// is a rename. Keep a soft-deleted tombstone so the later ingest can
+		// adopt its ID and scraped metadata even if fsnotify delivers the
+		// remove event before the create event. A true deletion stays hard.
+		if row.Path == path && liveSTRMPathAlias(path) {
+			softIDs = append(softIDs, row.ID)
+			continue
+		}
+		hardIDs = append(hardIDs, row.ID)
 	}
-	if len(ids) == 0 {
-		return 0, nil
+	var removed int64
+	if len(softIDs) > 0 {
+		res := s.repo.DB.WithContext(ctx).
+			Where("id IN ?", softIDs).
+			Delete(&model.Media{})
+		if res.Error != nil {
+			return removed, res.Error
+		}
+		removed += res.RowsAffected
 	}
-	res := s.repo.DB.WithContext(ctx).Unscoped().
-		Where("id IN ?", ids).
-		Delete(&model.Media{})
-	if res.Error == nil && res.RowsAffected > 0 {
+	if len(hardIDs) > 0 {
+		res := s.repo.DB.WithContext(ctx).Unscoped().
+			Where("id IN ?", hardIDs).
+			Delete(&model.Media{})
+		if res.Error != nil {
+			return removed, res.Error
+		}
+		removed += res.RowsAffected
+	}
+	if removed > 0 {
 		s.invalidateMediaCache(ctx)
 	}
-	return res.RowsAffected, res.Error
+	if len(softIDs) > 0 {
+		s.purgeExpiredSTRMTombstones(ctx)
+	}
+	return removed, nil
+}
+
+const strmRenameTombstoneRetention = 7 * 24 * time.Hour
+
+// purgeExpiredSTRMTombstones keeps the soft-delete grace period bounded.
+// It is deliberately restricted to deleted media rows under a STRM alias
+// workflow; normal deletions are still hard-deleted immediately.
+func (s *ScannerService) purgeExpiredSTRMTombstones(ctx context.Context) {
+	cutoff := time.Now().Add(-strmRenameTombstoneRetention)
+	if err := s.repo.DB.WithContext(ctx).Unscoped().
+		Where("deleted_at IS NOT NULL AND deleted_at < ? AND path LIKE ?", cutoff, "%.strm").
+		Delete(&model.Media{}).Error; err != nil && s.log != nil {
+		s.log.Warn("purge expired STRM rename tombstones failed", zap.Error(err))
+	}
 }

 func (s *ScannerService) pruneMissingMedia(ctx context.Context, libraryID string, seen map[string]struct{}) (int64, error) {
@@ -117,6 +117,10 @@ func (s *ScannerService) scanLibrary(ctx context.Context, libraryID string, auto
 			}
 			continue
 		}
+		// Flush alias-aware upserts before pruning missing paths. This lets a
+		// foo.strm <-> foo.mkv.strm rename migrate the existing row (including
+		// scraped metadata) instead of deleting it as "old path missing".
+		writeBatch.Flush()
 		scannedRoots++
 		removed, err := s.pruneMissingMediaForRoot(ctx, lib.ID, root.ID, root.Path, seen)
 		if err != nil {
@@ -0,0 +1,212 @@
+package service
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"github.com/truewhile/MeBox/internal/model"
+)
+
+func TestSTRMPathAliasesCoverBothKeepExtDirections(t *testing.T) {
+	toKeepExt := strmPathAliases(filepath.Join(t.TempDir(), "Show.S01E01.strm"))
+	if !containsPathAlias(toKeepExt, "Show.S01E01.mkv.strm") {
+		t.Fatalf("missing keep_ext alias: %#v", toKeepExt)
+	}
+	fromKeepExt := strmPathAliases(filepath.Join(t.TempDir(), "Show.S01E01.mkv.strm"))
+	if !containsPathAlias(fromKeepExt, "Show.S01E01.strm") {
+		t.Fatalf("missing stripped alias: %#v", fromKeepExt)
+	}
+}
+
+func TestMissingSTRMPathAliasesKeepsRealKeepExtSiblingVersions(t *testing.T) {
+	dir := t.TempDir()
+	current := filepath.Join(dir, "Show.S01E01.mkv.strm")
+	sibling := filepath.Join(dir, "Show.S01E01.mp4.strm")
+	writeFileContent(t, current, "https://example.test/mkv")
+	writeFileContent(t, sibling, "https://example.test/mp4")
+
+	aliases := missingSTRMPathAliases(current)
+	if containsPathAlias(aliases, sibling) {
+		t.Fatalf("existing keep_ext sibling must remain a separate version: %#v", aliases)
+	}
+}
+
+func TestScanLibraryMigratesSTRMKeepExtRename(t *testing.T) {
+	cases := []struct {
+		name    string
+		oldName string
+		newName string
+	}{
+		{name: "add video extension", oldName: "Show.S01E01.strm", newName: "Show.S01E01.mkv.strm"},
+		{name: "remove video extension", oldName: "Show.S01E01.mkv.strm", newName: "Show.S01E01.strm"},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			sc, repos := newScannerTestEnv(t)
+			root := t.TempDir()
+			lib := model.Library{Name: "Anime", Path: root, Type: "anime", Enabled: true}
+			if err := repos.Library.Create(t.Context(), &lib); err != nil {
+				t.Fatal(err)
+			}
+			oldPath := filepath.Join(root, tc.oldName)
+			newPath := filepath.Join(root, tc.newName)
+			writeFileContent(t, oldPath, "https://example.test/video")
+			if _, err := sc.IngestPath(t.Context(), lib.ID, oldPath); err != nil {
+				t.Fatal(err)
+			}
+
+			var before model.Media
+			if err := repos.DB.First(&before, "path = ?", oldPath).Error; err != nil {
+				t.Fatal(err)
+			}
+			if err := repos.DB.Model(&model.Media{}).Where("id = ?", before.ID).Updates(map[string]any{
+				"title":         "地狱乐",
+				"original_name": "Jigokuraku",
+				"overview":      "preserved overview",
+				"poster_url":    "Jigokuraku-poster.jpg",
+				"backdrop_url":  "Jigokuraku-backdrop.jpg",
+				"year":          2023,
+				"rating":        8.6,
+				"tm_db_id":      12345,
+				"bangumi_id":    67890,
+				"genres":        "Action,Adventure",
+				"scrape_status": "matched",
+			}).Error; err != nil {
+				t.Fatal(err)
+			}
+			if err := os.Rename(oldPath, newPath); err != nil {
+				t.Fatal(err)
+			}
+
+			res, err := sc.ScanLibrary(t.Context(), lib.ID)
+			if err != nil {
+				t.Fatal(err)
+			}
+			if res.ErrorCount != 0 {
+				t.Fatalf("scan errors: %#v", res.Errors)
+			}
+			if got := countMedia(t, repos); got != 1 {
+				t.Fatalf("media count = %d, want 1", got)
+			}
+
+			var after model.Media
+			if err := repos.DB.First(&after, "id = ?", before.ID).Error; err != nil {
+				t.Fatalf("old media row was not preserved: %v", err)
+			}
+			if after.Path != newPath {
+				t.Fatalf("path = %q, want %q", after.Path, newPath)
+			}
+			if after.Title != "地狱乐" || after.OriginalName != "Jigokuraku" || after.Overview != "preserved overview" {
+				t.Fatalf("scraped identity metadata was lost: %#v", after)
+			}
+			if after.PosterURL != "Jigokuraku-poster.jpg" || after.BackdropURL != "Jigokuraku-backdrop.jpg" {
+				t.Fatalf("artwork was lost: poster=%q backdrop=%q", after.PosterURL, after.BackdropURL)
+			}
+			if after.TMDbID != 12345 || after.BangumiID != 67890 || after.ScrapeStatus != "matched" {
+				t.Fatalf("scrape IDs/status changed: tmdb=%d bgm=%d status=%q", after.TMDbID, after.BangumiID, after.ScrapeStatus)
+			}
+		})
+	}
+}
+
+func TestIngestPathAdoptsSoftDeletedSTRMRenameTombstone(t *testing.T) {
+	sc, repos := newScannerTestEnv(t)
+	root := t.TempDir()
+	lib := model.Library{Name: "Anime", Path: root, Type: "anime", Enabled: true}
+	if err := repos.Library.Create(t.Context(), &lib); err != nil {
+		t.Fatal(err)
+	}
+	oldPath := filepath.Join(root, "Show.S01E01.mkv.strm")
+	newPath := filepath.Join(root, "Show.S01E01.strm")
+	writeFileContent(t, oldPath, "https://example.test/video")
+	if _, err := sc.IngestPath(t.Context(), lib.ID, oldPath); err != nil {
+		t.Fatal(err)
+	}
+
+	var before model.Media
+	if err := repos.DB.First(&before, "path = ?", oldPath).Error; err != nil {
+		t.Fatal(err)
+	}
+	if err := repos.DB.Model(&model.Media{}).Where("id = ?", before.ID).Updates(map[string]any{
+		"title":         "拔作岛",
+		"overview":      "kept through remove-before-create",
+		"poster_url":    "nukitashi-poster.webp",
+		"tm_db_id":      222,
+		"scrape_status": "matched",
+	}).Error; err != nil {
+		t.Fatal(err)
+	}
+	if err := os.Rename(oldPath, newPath); err != nil {
+		t.Fatal(err)
+	}
+
+	// Simulate fsnotify delivering Remove(old) before Create(new).
+	if removed, err := sc.RemovePath(t.Context(), oldPath); err != nil || removed != 1 {
+		t.Fatalf("RemovePath() removed=%d err=%v, want 1", removed, err)
+	}
+	var tombstone model.Media
+	if err := repos.DB.Unscoped().First(&tombstone, "id = ?", before.ID).Error; err != nil {
+		t.Fatal(err)
+	}
+	if !tombstone.DeletedAt.Valid {
+		t.Fatal("rename tombstone should be soft-deleted")
+	}
+	if got := countMedia(t, repos); got != 0 {
+		t.Fatalf("active media count = %d, want 0 before create event", got)
+	}
+
+	if _, err := sc.IngestPath(t.Context(), lib.ID, newPath); err != nil {
+		t.Fatal(err)
+	}
+	var after model.Media
+	if err := repos.DB.First(&after, "id = ?", before.ID).Error; err != nil {
+		t.Fatalf("soft-deleted row was not restored: %v", err)
+	}
+	if after.Path != newPath || after.Title != "拔作岛" || after.Overview != "kept through remove-before-create" {
+		t.Fatalf("rename metadata was not adopted: %#v", after)
+	}
+	if after.TMDbID != 222 || after.ScrapeStatus != "matched" {
+		t.Fatalf("scrape metadata changed: tmdb=%d status=%q", after.TMDbID, after.ScrapeStatus)
+	}
+	if got := countMedia(t, repos); got != 1 {
+		t.Fatalf("media count = %d, want 1", got)
+	}
+}
+
+func TestRemovePathStillHardDeletesTrueDeletionWithoutAlias(t *testing.T) {
+	sc, repos := newScannerTestEnv(t)
+	root := t.TempDir()
+	lib := model.Library{Name: "Anime", Path: root, Type: "anime", Enabled: true}
+	if err := repos.Library.Create(t.Context(), &lib); err != nil {
+		t.Fatal(err)
+	}
+	path := filepath.Join(root, "Deleted.S01E01.mkv.strm")
+	writeFileContent(t, path, "https://example.test/video")
+	if _, err := sc.IngestPath(t.Context(), lib.ID, path); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.Remove(path); err != nil {
+		t.Fatal(err)
+	}
+	if removed, err := sc.RemovePath(t.Context(), path); err != nil || removed != 1 {
+		t.Fatalf("RemovePath() removed=%d err=%v, want 1", removed, err)
+	}
+	var count int64
+	if err := repos.DB.Unscoped().Model(&model.Media{}).Where("path = ?", path).Count(&count).Error; err != nil {
+		t.Fatal(err)
+	}
+	if count != 0 {
+		t.Fatalf("true deletion left %d tombstone row(s)", count)
+	}
+}
+
+func containsPathAlias(paths []string, name string) bool {
+	for _, path := range paths {
+		if strings.EqualFold(filepath.Base(path), filepath.Base(name)) {
+			return true
+		}
+	}
+	return false
+}
@@ -63,12 +63,17 @@ func (s *ScraperService) EnrichOneWithOptions(ctx context.Context, m *model.Medi
 		}
 	}

+	// Same stale-negative problem as the library path: a single-item retry
+	// (queue task / manual rescrape) must get a fresh provider round-trip.
+	if options.RetryNoMatch && s != nil {
+		s.lookupCache.clearNegatives()
+	}
 	candidates := scrapeQueryCandidatesWithRecognition(ctx, s.repo, m, lib)
 	var query string
 	match := (*Match)(nil)
 	for _, candidate := range candidates {
 		query = candidate
-		candidateMatch := s.lookup(ctx, lib, m, candidate, year)
+		candidateMatch := s.lookup(ctx, lib, m, candidate, year, options.ForceRematch)
 		if candidateMatch == nil {
 			continue
 		}
@@ -93,7 +98,11 @@ func (s *ScraperService) EnrichOneWithOptions(ctx context.Context, m *model.Medi
 	}
 	if match == nil {
 		if local != nil && !local.PathHint {
-			return s.applyLocalMetadataMatch(ctx, m, local)
+			err := s.applyLocalMetadataMatch(ctx, m, local)
+			if err == nil {
+				options.recordProvider("local")
+			}
+			return err
 		}
 		if err := s.repo.DB.WithContext(ctx).Model(&model.Media{}).Where("id = ?", m.ID).
 			Update("scrape_status", "no_match").Error; err != nil {
@@ -119,8 +128,22 @@ func (s *ScraperService) applyProviderMatch(ctx context.Context, m *model.Media,
 func (s *ScraperService) applyProviderMatchWithOptions(ctx context.Context, m *model.Media, lib *model.Library, match *Match, options ScrapeOptions) error {
 	posterCandidate := match.PosterURL
 	backdropCandidate := match.BackdropURL
-	posterURL, removePoster := s.prepareScrapedArtworkURL(ctx, m.ID, "poster_url", m.PosterURL, posterCandidate)
-	backdropURL, removeBackdrop := s.prepareScrapedArtworkURL(ctx, m.ID, "backdrop_url", m.BackdropURL, backdropCandidate)
+	currentPoster := m.PosterURL
+	currentBackdrop := m.BackdropURL
+	if options.RebuildIdentity {
+		currentPoster = ""
+		currentBackdrop = ""
+	}
+	posterURL, removePoster := s.prepareScrapedArtworkURL(ctx, m.ID, "poster_url", currentPoster, posterCandidate)
+	backdropURL, removeBackdrop := s.prepareScrapedArtworkURL(ctx, m.ID, "backdrop_url", currentBackdrop, backdropCandidate)
+	if options.RebuildIdentity {
+		if strings.TrimSpace(m.PosterURL) != posterURL {
+			removePoster = m.PosterURL
+		}
+		if strings.TrimSpace(m.BackdropURL) != backdropURL {
+			removeBackdrop = m.BackdropURL
+		}
+	}
 	updates := map[string]any{
 		"title":         match.Title,
 		"overview":      match.Overview,
@@ -142,6 +165,12 @@ func (s *ScraperService) applyProviderMatchWithOptions(ctx context.Context, m *m
 		updates["languages"] = strings.Join(match.Languages, ",")
 		updates["nsfw"] = match.NSFW
 	}
+	if options.RebuildIdentity {
+		updates["season_num"] = m.SeasonNum
+		updates["episode_num"] = m.EpisodeNum
+		updates["episode_title"] = ""
+		updates["series_id"] = ""
+	}
 	if match.ReleaseDate != "" {
 		updates["release_date"] = match.ReleaseDate
 	}
@@ -207,6 +236,11 @@ func (s *ScraperService) applyProviderMatchWithOptions(ctx context.Context, m *m
 		"thetvdb_id": match.TheTVDBID,
 		"source":     map[bool]string{true: "adult"}[match.NSFW],
 	})
+	provider := strings.ToLower(strings.TrimSpace(match.Provider))
+	if provider == "" {
+		provider = "unknown"
+	}
+	options.recordProvider(provider)
 	return nil
 }

@@ -0,0 +1,313 @@
+package service
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"go.uber.org/zap"
+
+	"github.com/truewhile/MeBox/internal/config"
+	"github.com/truewhile/MeBox/internal/model"
+)
+
+func TestTheatricalTitleVariants(t *testing.T) {
+	tests := []struct {
+		input string
+		want  []string
+	}{
+		{
+			input: "名侦探柯南 剧场版01 引爆摩天楼",
+			want:  []string{"名侦探柯南 引爆摩天楼", "名侦探柯南 剧场版01 引爆摩天楼"},
+		},
+		{
+			input: "名侦探柯南 剧场版26 黑铁的鱼影",
+			want:  []string{"名侦探柯南 黑铁的鱼影", "名侦探柯南 剧场版26 黑铁的鱼影"},
+		},
+		{
+			input: "鬼灭之刃 剧场版 无限列车篇",
+			want:  []string{"鬼灭之刃 无限列车篇", "鬼灭之刃 剧场版 无限列车篇"},
+		},
+		{
+			input: "航海王 The Movie 黄金之城",
+			want:  []string{"航海王 The Movie 黄金之城"},
+		},
+		{
+			input: "普通动漫 第01集",
+			want:  []string{"普通动漫 第01集"},
+		},
+	}
+
+	for _, tc := range tests {
+		got := theatricalTitleVariants(tc.input)
+		if len(got) != len(tc.want) {
+			t.Fatalf("theatricalTitleVariants(%q) = %v, want %v", tc.input, got, tc.want)
+		}
+		for i := range got {
+			if got[i] != tc.want[i] {
+				t.Fatalf("theatricalTitleVariants(%q)[%d] = %q, want %q", tc.input, i, got[i], tc.want[i])
+			}
+		}
+	}
+}
+
+func TestMetadataMatchCompatibilityForTheatricalFeatures(t *testing.T) {
+	animeMatch := &Match{MediaType: "anime"}
+
+	if metadataMatchCompatibleWithType("movie", animeMatch) {
+		t.Fatal("ordinary movie lookups must not accept anime matches")
+	}
+	if !metadataMatchCompatibleWithTheatrical("movie", true, animeMatch) {
+		t.Fatal("theatrical movie lookup should accept an anime provider match")
+	}
+	if metadataMatchCompatibleWithTheatrical("movie", false, animeMatch) {
+		t.Fatal("non-theatrical movie lookup must not accept an anime provider match")
+	}
+}
+
+func TestMediaLooksLikeTheatricalFeatureIgnoresStaleEpisodeIdentity(t *testing.T) {
+	media := &model.Media{
+		Title:      "未命名",
+		Path:       `/media/anime/超人高校生们/剧场版/超人高校生们 剧场版.mkv`,
+		SeasonNum:  1,
+		EpisodeNum: 1,
+	}
+	if !mediaLooksLikeTheatricalFeature(media) {
+		t.Fatal("theatrical path should override stale persisted season/episode fields")
+	}
+
+	namedFolder := &model.Media{
+		Title: "Eiga Yurukyan 2022 Bluray",
+		Path:  `/media/anime/摇曳露营△ (2018)/摇曳露营△ 剧场版 (2022)/Eiga.Yurukyan.2022.Bluray.mkv`,
+	}
+	if !mediaLooksLikeTheatricalFeature(namedFolder) {
+		t.Fatal("a named theatrical folder with a year should be detected from the full path")
+	}
+
+	realEpisode := &model.Media{
+		Title:      "剧场版制作幕后",
+		Path:       `/media/anime/超人高校生们/Season 01/超人高校生们.S01E01.mkv`,
+		SeasonNum:  1,
+		EpisodeNum: 1,
+	}
+	if mediaLooksLikeTheatricalFeature(realEpisode) {
+		t.Fatal("an actual episode marker in the path must remain episodic")
+	}
+}
+
+func TestScrapeQueryCandidatesForAnimeTheatricalMix(t *testing.T) {
+	lib := &model.Library{
+		Path: `/media/anime`,
+		Type: "anime",
+	}
+
+	// 1. 同目录下包含剧场版01
+	theatricalMedia := &model.Media{
+		Title: "名侦探柯南 剧场版01 引爆摩天楼",
+		Path:  `/media/anime/名侦探柯南/名侦探柯南 剧场版01 引爆摩天楼.mkv`,
+	}
+	candidates := scrapeQueryCandidates(theatricalMedia, lib)
+	if len(candidates) == 0 {
+		t.Fatal("scrapeQueryCandidates returned no candidates for theatrical media")
+	}
+	if candidates[0] != "名侦探柯南 引爆摩天楼" {
+		t.Fatalf("first candidate for theatrical media = %q, want cleaned movie title '名侦探柯南 引爆摩天楼'; all=%v", candidates[0], candidates)
+	}
+
+	// 2. 剧场版放在以剧场版命名的子目录
+	subfolderTheatricalMedia := &model.Media{
+		Title: "无限列车篇",
+		Path:  `/media/anime/鬼灭之刃/剧场版/无限列车篇.mkv`,
+	}
+	subCandidates := scrapeQueryCandidates(subfolderTheatricalMedia, lib)
+	if len(subCandidates) == 0 {
+		t.Fatal("scrapeQueryCandidates returned no candidates for subfolder theatrical media")
+	}
+	foundCombined := false
+	for _, c := range subCandidates {
+		if c == "鬼灭之刃 无限列车篇" {
+			foundCombined = true
+			break
+		}
+	}
+	if !foundCombined {
+		t.Fatalf("candidates for subfolder theatrical did not contain '鬼灭之刃 无限列车篇': %v", subCandidates)
+	}
+
+	// 3. 混合放置的普通剧集分集不应受剧场版影响
+	episodeMedia := &model.Media{
+		Title:      "名侦探柯南 - S01E01",
+		Path:       `/media/anime/名侦探柯南/名侦探柯南 - S01E01.mp4`,
+		SeasonNum:  1,
+		EpisodeNum: 1,
+	}
+	epCandidates := scrapeQueryCandidates(episodeMedia, lib)
+	if len(epCandidates) == 0 {
+		t.Fatal("scrapeQueryCandidates returned no candidates for episode media")
+	}
+	if epCandidates[0] != "名侦探柯南" {
+		t.Fatalf("first candidate for tv episode = %q, want series folder title '名侦探柯南'", epCandidates[0])
+	}
+}
+
+func TestEnrichOneAnimeMixedEpisodesAndTheatrical(t *testing.T) {
+	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		switch r.URL.Path {
+		case "/search/tv":
+			q := r.URL.Query().Get("query")
+			if q == "鬼灭之刃" {
+				_ = json.NewEncoder(w).Encode(map[string]any{
+					"results": []map[string]any{{
+						"id":             85937,
+						"name":           "鬼灭之刃",
+						"original_name":  "鬼滅の刃",
+						"overview":       "大正时期、日本...",
+						"first_air_date": "2019-04-06",
+					}},
+				})
+				return
+			}
+			_ = json.NewEncoder(w).Encode(map[string]any{"results": []any{}})
+		case "/search/movie":
+			q := r.URL.Query().Get("query")
+			if q == "鬼灭之刃 无限列车篇" || q == "鬼灭之刃 剧场版 无限列车篇" {
+				_ = json.NewEncoder(w).Encode(map[string]any{
+					"results": []map[string]any{{
+						"id":             635302,
+						"title":          "鬼灭之刃 剧场版 无限列车篇",
+						"original_title": "劇場版「鬼滅の刃」無限列車編",
+						"overview":       "在结束了蝴蝶屋的修业之后...",
+						"release_date":   "2020-10-16",
+					}},
+				})
+				return
+			}
+			_ = json.NewEncoder(w).Encode(map[string]any{"results": []any{}})
+		case "/tv/85937":
+			_ = json.NewEncoder(w).Encode(map[string]any{
+				"id":             85937,
+				"name":           "鬼灭之刃",
+				"original_name":  "鬼滅の刃",
+				"first_air_date": "2019-04-06",
+			})
+		case "/movie/635302":
+			_ = json.NewEncoder(w).Encode(map[string]any{
+				"id":             635302,
+				"title":          "鬼灭之刃 剧场版 无限列车篇",
+				"original_title": "劇場版「鬼滅の刃」無限列車編",
+				"release_date":   "2020-10-16",
+			})
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer upstream.Close()
+
+	repos := newOrganizerTestRepo(t)
+	cfg := &config.Config{}
+	cfg.Secrets.TMDbAPIKey = "test-key"
+	cfg.Secrets.TMDbAPIProxy = upstream.URL
+	log := zap.NewNop()
+	scraper := NewScraperService(cfg, log, repos, NewTMDbProvider(cfg, log, nil), nil, nil, nil, NewHub(log))
+
+	lib := model.Library{Name: "动漫", Path: `/media/anime`, Type: "anime", Enabled: true}
+	if err := repos.DB.Create(&lib).Error; err != nil {
+		t.Fatal(err)
+	}
+
+	// 1. 同一目录下的 TV 剧集
+	tvEpisode := model.Media{
+		LibraryID:    lib.ID,
+		Title:        "鬼灭之刃 S01E01",
+		Path:         `/media/anime/鬼灭之刃/Season 01/鬼灭之刃 - S01E01.mkv`,
+		SeasonNum:    1,
+		EpisodeNum:   1,
+		ScrapeStatus: "pending",
+	}
+	if err := repos.DB.Create(&tvEpisode).Error; err != nil {
+		t.Fatal(err)
+	}
+
+	// 2. 同一目录下的剧场版文件
+	movieMedia := model.Media{
+		LibraryID:    lib.ID,
+		Title:        "鬼灭之刃 剧场版 无限列车篇",
+		Path:         `/media/anime/鬼灭之刃/鬼灭之刃 剧场版 无限列车篇.mkv`,
+		ScrapeStatus: "pending",
+	}
+	if err := repos.DB.Create(&movieMedia).Error; err != nil {
+		t.Fatal(err)
+	}
+
+	// 刮削剧集
+	if err := scraper.EnrichOne(t.Context(), &tvEpisode); err != nil {
+		t.Fatalf("enrich tv episode: %v", err)
+	}
+	gotTV, err := repos.Media.FindByID(t.Context(), tvEpisode.ID)
+	if err != nil || gotTV == nil {
+		t.Fatalf("load tv episode: %v", err)
+	}
+	if gotTV.ScrapeStatus != "matched" || gotTV.TMDbID != 85937 {
+		t.Fatalf("tv episode scrape mismatch: status=%s, tmdb_id=%d", gotTV.ScrapeStatus, gotTV.TMDbID)
+	}
+
+	// 刮削剧场版
+	if err := scraper.EnrichOne(t.Context(), &movieMedia); err != nil {
+		t.Fatalf("enrich movie: %v", err)
+	}
+	gotMovie, err := repos.Media.FindByID(t.Context(), movieMedia.ID)
+	if err != nil || gotMovie == nil {
+		t.Fatalf("load movie: %v", err)
+	}
+	if gotMovie.ScrapeStatus != "matched" || gotMovie.TMDbID != 635302 {
+		t.Fatalf("theatrical movie scrape mismatch: status=%s, tmdb_id=%d, want 635302", gotMovie.ScrapeStatus, gotMovie.TMDbID)
+	}
+	if gotMovie.Title != "鬼灭之刃 剧场版 无限列车篇" {
+		t.Fatalf("theatrical movie title = %q, want '鬼灭之刃 剧场版 无限列车篇'", gotMovie.Title)
+	}
+}
+
+func TestClassifyAnimeTheatricalMovie(t *testing.T) {
+	categories := map[string]string{
+		"animation_movie": "动画电影",
+		"jp_anime":        "日番",
+		"chinese_movie":   "华语电影",
+	}
+	tests := []struct {
+		title     string
+		mediaType string
+		want      string
+	}{
+		{
+			title:     "名侦探柯南 剧场版01 引爆摩天楼",
+			mediaType: "movie",
+			want:      "动画电影",
+		},
+		{
+			title:     "鬼灭之刃 剧场版 无限列车篇",
+			mediaType: "movie",
+			want:      "动画电影",
+		},
+		{
+			title:     "鬼灭之刃 S01E01",
+			mediaType: "tv",
+			want:      "日番",
+		},
+	}
+
+	for _, tc := range tests {
+		input := mediaClassifyInput{
+			MediaType: tc.mediaType,
+			Title:     tc.title,
+			Languages: []string{"JA"},
+			Countries: []string{"JP"},
+			Genres:    []string{"Animation"},
+		}
+		got := classifyMediaCategory(input, categories)
+		if got != tc.want {
+			t.Fatalf("classifyMediaCategory(%q, %q) = %q, want %q", tc.title, tc.mediaType, got, tc.want)
+		}
+	}
+}
@@ -2,6 +2,7 @@ package service

 import (
 	"context"
+	"net/url"
 	"strings"
 	"time"

@@ -20,10 +21,34 @@ func (s *ScraperService) prepareScrapedArtworkURL(ctx context.Context, mediaID,
 	if s == nil || s.images == nil || !isHTTPish(candidate) {
 		return candidate, ""
 	}
-	fetchCtx, cancel := context.WithTimeout(context.WithoutCancel(ctx), 15*time.Second)
+	originalSource := metaTubeOriginalArtworkURL(candidate)
+	timeout := 15 * time.Second
+	if originalSource != "" {
+		// MetaTube face processing can become very slow under a batch scrape.
+		// Fail over quickly so the same source can be processed locally.
+		timeout = 8 * time.Second
+	}
+	fetchCtx, cancel := context.WithTimeout(context.WithoutCancel(ctx), timeout)
 	err := s.images.PrefetchRemote(fetchCtx, candidate)
 	cancel()
 	if err != nil {
+		if originalSource != "" {
+			fallbackCtx, fallbackCancel := context.WithTimeout(context.WithoutCancel(ctx), 15*time.Second)
+			fallbackErr := s.images.PrefetchRemote(fallbackCtx, originalSource)
+			fallbackCancel()
+			if fallbackErr == nil {
+				s.log.Warn("MetaTube artwork processing failed; using local face-aware crop",
+					zap.String("media_id", mediaID),
+					zap.String("field", field),
+					zap.String("candidate", candidate),
+					zap.String("source", originalSource),
+					zap.Error(err))
+				if current != "" && isHTTPish(current) {
+					return originalSource, current
+				}
+				return originalSource, ""
+			}
+		}
 		if current != "" {
 			s.log.Warn("scrape artwork prefetch failed; keeping existing artwork",
 				zap.String("media_id", mediaID),
@@ -46,6 +71,18 @@ func (s *ScraperService) prepareScrapedArtworkURL(ctx context.Context, mediaID,
 	return candidate, ""
 }

+func metaTubeOriginalArtworkURL(raw string) string {
+	parsed, err := url.Parse(strings.TrimSpace(raw))
+	if err != nil || !strings.Contains(parsed.Path, "/v1/images/primary/") {
+		return ""
+	}
+	source := strings.TrimSpace(parsed.Query().Get("url"))
+	if !isHTTPish(source) {
+		return ""
+	}
+	return source
+}
+
 func (s *ScraperService) removeCachedScrapedArtwork(urls ...string) {
 	if s == nil || s.images == nil {
 		return
@@ -3,8 +3,11 @@ package service
 import (
 	"bytes"
 	"errors"
+	"image"
+	"image/color"
 	"io"
 	"net/http"
+	"net/url"
 	"os"
 	"path/filepath"
 	"strings"
@@ -67,10 +70,14 @@ func TestApplyProviderMatchInvalidatesMediaCache(t *testing.T) {
 	if err := repos.DB.Create(&media).Error; err != nil {
 		t.Fatal(err)
 	}
-	match := &Match{Title: "Matched", PosterURL: "https://image.tmdb.org/t/p/w500/poster.jpg", BackdropURL: "https://image.tmdb.org/t/p/w1280/backdrop.jpg"}
-	if err := scraper.applyProviderMatch(t.Context(), &media, &lib, match); err != nil {
+	match := &Match{Provider: "metatube", Title: "Matched", PosterURL: "https://image.tmdb.org/t/p/w500/poster.jpg", BackdropURL: "https://image.tmdb.org/t/p/w1280/backdrop.jpg"}
+	usedProvider := ""
+	if err := scraper.applyProviderMatchWithOptions(t.Context(), &media, &lib, match, ScrapeOptions{resultProvider: &usedProvider}); err != nil {
 		t.Fatal(err)
 	}
+	if usedProvider != "metatube" {
+		t.Fatalf("recorded provider = %q, want metatube", usedProvider)
+	}

 	var stale map[string]string
 	if cache.GetJSON(t.Context(), "media:list:stale", &stale) {
@@ -145,6 +152,92 @@ func TestApplyProviderMatchKeepsExistingArtworkWhenNewPrefetchFails(t *testing.T
 	}
 }

+func TestApplyProviderMatchFallsBackToLocalFaceCropWhenMetaTubeImageFails(t *testing.T) {
+	scraper, repos, closeServer := newTestScraper(t)
+	defer closeServer()
+
+	wideCover := createTestImage(
+		900,
+		600,
+		color.RGBA{R: 255, A: 255},
+		color.RGBA{B: 255, A: 255},
+	)
+	sourceURL := "https://images.example.com/wide-cover.jpg"
+	images := NewImageProxy(&config.Config{Cache: config.CacheConfig{CacheDir: filepath.Join(t.TempDir(), "cache")}}, zap.NewNop())
+	images.client = &http.Client{Transport: imageRoundTripFunc(func(req *http.Request) (*http.Response, error) {
+		if req.URL.Host == "metatube.example.com" {
+			return &http.Response{
+				StatusCode: http.StatusGatewayTimeout,
+				Status:     "504 Gateway Timeout",
+				Header:     make(http.Header),
+				Body:       io.NopCloser(strings.NewReader("timeout")),
+				Request:    req,
+			}, nil
+		}
+		return &http.Response{
+			StatusCode: http.StatusOK,
+			Status:     "200 OK",
+			Header:     http.Header{"Content-Type": []string{"image/jpeg"}},
+			Body:       io.NopCloser(bytes.NewReader(wideCover)),
+			Request:    req,
+		}, nil
+	})}
+	scraper.SetImageProxy(images)
+
+	libPath := t.TempDir()
+	lib := model.Library{Name: "Adult", Path: libPath, Type: "adult", Enabled: true}
+	if err := repos.Library.Create(t.Context(), &lib); err != nil {
+		t.Fatal(err)
+	}
+	media := model.Media{
+		LibraryID:    lib.ID,
+		Title:        "Raw",
+		Path:         filepath.Join(libPath, "IPX-235.mp4"),
+		PosterURL:    filepath.Join(libPath, "old-poster.jpg"),
+		NSFW:         true,
+		ScrapeStatus: "matched",
+	}
+	if err := repos.DB.Create(&media).Error; err != nil {
+		t.Fatal(err)
+	}
+	query := url.Values{
+		"auto":    {"true"},
+		"pos":     {"1"},
+		"quality": {"90"},
+		"ratio":   {"-1"},
+		"url":     {sourceURL},
+	}
+	match := &Match{
+		Title:     "IPX-235 Matched",
+		MediaType: "adult",
+		NSFW:      true,
+		PosterURL: "https://metatube.example.com/v1/images/primary/AVE/123?" + query.Encode(),
+	}
+	if err := scraper.applyProviderMatch(t.Context(), &media, &lib, match); err != nil {
+		t.Fatal(err)
+	}
+
+	var stored model.Media
+	if err := repos.DB.First(&stored, "id = ?", media.ID).Error; err != nil {
+		t.Fatal(err)
+	}
+	if filepath.Base(stored.PosterURL) != "IPX-235-poster.jpg" {
+		t.Fatalf("poster = %q, want local face-cropped sidecar", stored.PosterURL)
+	}
+	data, err := os.ReadFile(stored.PosterURL)
+	if err != nil {
+		t.Fatal(err)
+	}
+	cropped, _, err := image.Decode(bytes.NewReader(data))
+	if err != nil {
+		t.Fatal(err)
+	}
+	ratio := float64(cropped.Bounds().Dx()) / float64(cropped.Bounds().Dy())
+	if ratio < 0.65 || ratio > 0.68 {
+		t.Fatalf("local fallback poster ratio = %.3f", ratio)
+	}
+}
+
 func TestApplyProviderMatchReplacesArtworkAndRemovesOldCache(t *testing.T) {
 	scraper, repos, closeServer := newTestScraper(t)
 	defer closeServer()
@@ -8,6 +8,27 @@ import (
 )

 func (s *ScraperService) lookupAutomaticTMDb(ctx context.Context, kind, query string, year int) *Match {
+	if match := s.lookupAutomaticTMDbPrimary(ctx, kind, query, year); match != nil {
+		return match
+	}
+	fallbackKind := ""
+	normalized := normalizeOrganizeMediaType(kind)
+	if normalized == "anime" {
+		if isTVMetadataKind(kind) {
+			fallbackKind = "movie"
+		} else {
+			fallbackKind = "tv"
+		}
+	}
+	if fallbackKind != "" {
+		if fbMatch := s.lookupAutomaticTMDbPrimary(ctx, fallbackKind, query, year); fbMatch != nil {
+			return fbMatch
+		}
+	}
+	return nil
+}
+
+func (s *ScraperService) lookupAutomaticTMDbPrimary(ctx context.Context, kind, query string, year int) *Match {
 	var (
 		candidates []*Match
 		err        error
@@ -175,8 +196,10 @@ func metadataMatchCompatibleWithType(expectedType string, match *Match) bool {
 		return true
 	}
 	switch expectedType {
-	case "tv", "anime", "variety":
+	case "tv", "variety":
 		return matchType == "tv" || matchType == "anime" || matchType == "variety"
+	case "anime":
+		return matchType == "anime" || matchType == "tv" || matchType == "movie" || matchType == "variety"
 	case "movie", "adult":
 		return matchType == "movie" || matchType == "adult"
 	default:
@@ -184,6 +207,16 @@ func metadataMatchCompatibleWithType(expectedType string, match *Match) bool {
 	}
 }

+func metadataMatchCompatibleWithTheatrical(expectedType string, isTheatrical bool, match *Match) bool {
+	if isTheatrical &&
+		normalizeOrganizeMediaType(expectedType) == "movie" &&
+		match != nil &&
+		normalizeOrganizeMediaType(match.MediaType) == "anime" {
+		return true
+	}
+	return metadataMatchCompatibleWithType(expectedType, match)
+}
+
 func queryNeedsEnglishTMDbFallback(query string) bool {
 	for _, r := range query {
 		if (r >= 'a' && r <= 'z') || (r >= 'A' && r <= 'Z') {
@@ -13,7 +13,12 @@ import (
 // lookup runs the provider chain after local NFO has been considered:
 // TMDb -> Douban -> Bangumi -> TheTVDB. Douban and Bangumi do not require API
 // keys; providers that are unavailable or return an error are skipped.
-func (s *ScraperService) lookup(ctx context.Context, lib *model.Library, media *model.Media, query string, year int) *Match {
+//
+// Results are cached per (kind, theatrical, query, year) because every
+// episode of a show produces the same candidate; bypassCache forces a fresh
+// provider round-trip for user-triggered rematches but still refreshes the
+// cache so later episodes reuse the corrected result.
+func (s *ScraperService) lookup(ctx context.Context, lib *model.Library, media *model.Media, query string, year int, bypassCache bool) *Match {
 	kind := ""
 	if lib != nil {
 		kind = lib.Type
@@ -22,23 +27,50 @@ func (s *ScraperService) lookup(ctx context.Context, lib *model.Library, media *
 	// was previously polluted into S01E20x. Do not let the dirty path override
 	// that caller-supplied media type; TV/anime libraries still force TV below.
 	explicitEpisode := media != nil && (media.SeasonNum > 0 || media.EpisodeNum > 0)
-	if (normalizeOrganizeMediaType(kind) != "movie" || explicitEpisode) && mediaIsEpisodic(media, lib) {
+	isTheatrical := mediaLooksLikeTheatricalFeature(media)
+	if isTheatrical {
+		kind = "movie"
+	} else if (normalizeOrganizeMediaType(kind) != "movie" || explicitEpisode) && mediaIsEpisodic(media, lib) {
 		kind = "tv"
 	}
+
+	cacheKey := scrapeLookupCacheKey(kind, query, year, isTheatrical)
+	if !bypassCache {
+		if cached, ok := s.lookupCache.get(cacheKey); ok {
+			return cached
+		}
+	}
+	match := s.lookupUncached(ctx, kind, isTheatrical, query, year)
+	// Always refresh the cache, even on bypassed (forced) lookups, so a
+	// corrected rematch replaces the stale entry for later episodes.
+	s.lookupCache.set(cacheKey, match)
+	return match
+}
+
+func (s *ScraperService) lookupUncached(ctx context.Context, kind string, isTheatrical bool, query string, year int) *Match {
 	if s.tmdb != nil && s.tmdb.Enabled() {
 		if match := s.lookupAutomaticTMDb(ctx, kind, query, year); match != nil {
+			match.Provider = "tmdb"
 			return match
 		}
+		if isTheatrical {
+			if match := s.lookupAutomaticTMDb(ctx, "tv", query, year); match != nil {
+				match.Provider = "tmdb"
+				return match
+			}
+		}
 	}
 	if s.douban != nil && s.douban.Enabled() {
-		if m, err := s.douban.SearchMatch(ctx, query); err == nil && m != nil && metadataMatchCompatibleWithType(kind, m) {
+		if m, err := s.douban.SearchMatch(ctx, query); err == nil && m != nil && metadataMatchCompatibleWithTheatrical(kind, isTheatrical, m) {
+			m.Provider = "douban"
 			return m
 		} else if err != nil {
 			s.log.Debug("douban search failed", zap.String("query", query), zap.Error(err))
 		}
 	}
 	if s.bangumi != nil && s.bangumi.Enabled() {
-		if m, err := s.bangumi.Search(ctx, query); err == nil && m != nil && metadataMatchCompatibleWithType(kind, m) {
+		if m, err := s.bangumi.Search(ctx, query); err == nil && m != nil && metadataMatchCompatibleWithTheatrical(kind, isTheatrical, m) {
+			m.Provider = "bangumi"
 			return m
 		} else if err != nil {
 			s.log.Debug("bangumi search failed", zap.String("query", query), zap.Error(err))
@@ -46,6 +78,7 @@ func (s *ScraperService) lookup(ctx context.Context, lib *model.Library, media *
 	}
 	if (kind == "anime" || kind == "tv" || kind == "variety" || kind == "show" || kind == "shows") && s.thetvdb != nil && s.thetvdb.Enabled() {
 		if m, err := s.thetvdb.SearchSeries(ctx, query); err == nil && m != nil && metadataMatchCompatibleWithType(kind, m) {
+			m.Provider = "thetvdb"
 			return m
 		} else if err != nil {
 			s.log.Debug("thetvdb search failed", zap.String("query", query), zap.Error(err))
@@ -94,6 +127,13 @@ func (s *ScraperService) EnrichLibraryDetailed(ctx context.Context, libraryID st

 func (s *ScraperService) EnrichLibraryDetailedWithOptions(ctx context.Context, libraryID string, options ScrapeOptions) (EnrichLibraryResult, error) {
 	result := EnrichLibraryResult{LibraryID: libraryID}
+	// A manual retry must not reuse stale negative cache entries from the
+	// previous run, otherwise "重新刮削" looks like it did nothing. Positives
+	// are kept so the rest of the season still dedupes; the first re-queried
+	// episode refreshes the entry for the rows behind it.
+	if options.RetryNoMatch && s != nil {
+		s.lookupCache.clearNegatives()
+	}
 	rows, err := s.scrapeCandidateRows(ctx, libraryID, options)
 	if err != nil {
 		return result, err
@@ -23,6 +23,7 @@ func (s *ScraperService) matchFromMediaExternalIDs(ctx context.Context, m *model
 		}
 		if match := s.manualTMDbMatchByID(ctx, m.TMDbID, normalizeMediaType(mediaType, m.Title, "")); match != nil {
 			if s.mediaExternalIDMatchTrusted(m, lib, match, "tmdb") {
+				match.Provider = "tmdb"
 				preferExistingLocalizedEpisodeTitle(m, lib, match)
 				return match
 			}
@@ -31,6 +32,7 @@ func (s *ScraperService) matchFromMediaExternalIDs(ctx context.Context, m *model
 	if strings.TrimSpace(m.DoubanID) != "" && s.douban != nil && s.douban.Enabled() {
 		if match, err := s.douban.GetMatchByID(ctx, strings.TrimSpace(m.DoubanID)); err == nil && match != nil {
 			if s.mediaExternalIDMatchTrusted(m, lib, match, "douban") {
+				match.Provider = "douban"
 				preferExistingLocalizedEpisodeTitle(m, lib, match)
 				return match
 			}
@@ -41,6 +43,7 @@ func (s *ScraperService) matchFromMediaExternalIDs(ctx context.Context, m *model
 	if m.BangumiID > 0 && s.bangumi != nil && s.bangumi.Enabled() {
 		if match, err := s.bangumi.GetSubject(ctx, m.BangumiID); err == nil && match != nil {
 			if s.mediaExternalIDMatchTrusted(m, lib, match, "bangumi") {
+				match.Provider = "bangumi"
 				preferExistingLocalizedEpisodeTitle(m, lib, match)
 				return match
 			}
@@ -51,6 +54,7 @@ func (s *ScraperService) matchFromMediaExternalIDs(ctx context.Context, m *model
 	if strings.TrimSpace(m.TheTVDBID) != "" && s.thetvdb != nil && s.thetvdb.Enabled() {
 		if match, err := s.thetvdb.GetSeriesMatchByID(ctx, strings.TrimSpace(m.TheTVDBID)); err == nil && match != nil {
 			if s.mediaExternalIDMatchTrusted(m, lib, match, "thetvdb") {
+				match.Provider = "thetvdb"
 				preferExistingLocalizedEpisodeTitle(m, lib, match)
 				return match
 			}
@@ -0,0 +1,126 @@
+package service
+
+import (
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+)
+
+// A TV library scrapes one media row per episode, and every row in the same
+// show computes the same query candidate (the series folder title). Without a
+// cache each episode re-issues the identical TMDb/Douban/Bangumi/TheTVDB
+// search, so a 100-episode season costs 100x the network calls it needs.
+//
+// The cache lives on the ScraperService instance (not a package global) so that
+// two services with different provider configuration never share results. TTL
+// bounds staleness for out-of-band edits; explicit invalidation is unnecessary
+// because the key includes the effective media kind, theatrical flag, query
+// and year. Negative entries use a shorter TTL so a failed query is retried
+// sooner without manual intervention.
+const (
+	scrapeLookupCacheTTL         = 10 * time.Minute
+	scrapeLookupNegativeCacheTTL = 2 * time.Minute
+	scrapeLookupCacheMaxItems    = 1024
+)
+
+type scrapeLookupCache struct {
+	mu      sync.Mutex
+	entries map[string]scrapeLookupCacheEntry
+}
+
+type scrapeLookupCacheEntry struct {
+	match     *Match
+	expiresAt time.Time
+}
+
+func newScrapeLookupCache() *scrapeLookupCache {
+	return &scrapeLookupCache{entries: map[string]scrapeLookupCacheEntry{}}
+}
+
+func scrapeLookupCacheKey(kind, query string, year int, isTheatrical bool) string {
+	theatrical := "0"
+	if isTheatrical {
+		theatrical = "1"
+	}
+	return strings.ToLower(strings.TrimSpace(kind)) + "|" +
+		theatrical + "|" +
+		strconv.Itoa(year) + "|" +
+		strings.ToLower(strings.TrimSpace(query))
+}
+
+// get reports whether the key is cached. A hit may carry a nil match, which
+// means the provider chain already ran and found nothing (negative cache).
+// Use clearNegative before a user-triggered retry so stale negative entries
+// do not suppress the fresh provider round-trip.
+func (c *scrapeLookupCache) get(key string) (*Match, bool) {
+	if c == nil || key == "" {
+		return nil, false
+	}
+	now := time.Now()
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	item, ok := c.entries[key]
+	if !ok {
+		return nil, false
+	}
+	if now.After(item.expiresAt) {
+		delete(c.entries, key)
+		return nil, false
+	}
+	return cloneMatch(item.match), true
+}
+
+func (c *scrapeLookupCache) set(key string, match *Match) {
+	if c == nil || key == "" {
+		return
+	}
+	now := time.Now()
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	if len(c.entries) >= scrapeLookupCacheMaxItems {
+		for k, item := range c.entries {
+			if now.After(item.expiresAt) || len(c.entries) >= scrapeLookupCacheMaxItems {
+				delete(c.entries, k)
+			}
+			if len(c.entries) < scrapeLookupCacheMaxItems {
+				break
+			}
+		}
+	}
+	ttl := scrapeLookupCacheTTL
+	if match == nil {
+		ttl = scrapeLookupNegativeCacheTTL
+	}
+	c.entries[key] = scrapeLookupCacheEntry{match: cloneMatch(match), expiresAt: now.Add(ttl)}
+}
+
+// clearNegatives drops cached misses so a user-triggered retry gets a fresh
+// provider round-trip instead of reusing a stale negative entry.
+func (c *scrapeLookupCache) clearNegatives() {
+	if c == nil {
+		return
+	}
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	for k, item := range c.entries {
+		if item.match == nil {
+			delete(c.entries, k)
+		}
+	}
+}
+
+// cloneMatch returns an independent copy so callers that mutate the result
+// (localized title preference, local metadata merge, fanart artwork) cannot
+// corrupt the cached entry or leak state between media rows.
+func cloneMatch(m *Match) *Match {
+	if m == nil {
+		return nil
+	}
+	out := *m
+	out.Languages = append([]string(nil), m.Languages...)
+	out.Countries = append([]string(nil), m.Countries...)
+	out.Genres = append([]string(nil), m.Genres...)
+	out.Aliases = append([]string(nil), m.Aliases...)
+	return &out
+}
@@ -0,0 +1,165 @@
+package service
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"sync/atomic"
+	"testing"
+
+	"github.com/glebarez/sqlite"
+	"go.uber.org/zap"
+	"gorm.io/gorm"
+
+	"github.com/truewhile/MeBox/internal/config"
+	"github.com/truewhile/MeBox/internal/model"
+	"github.com/truewhile/MeBox/internal/repository"
+)
+
+// Every episode of a show produces the same query candidate (the series folder
+// title). Without the lookup cache each episode re-issues the identical search,
+// so a whole season costs one request per episode. This asserts the provider is
+// hit once and subsequent episodes reuse the cached match.
+func TestEnrichLibraryReusesLookupCacheAcrossEpisodes(t *testing.T) {
+	var searchCalls int32
+	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		switch r.URL.Path {
+		case "/search/tv":
+			if r.URL.Query().Get("query") != "折腰" {
+				_ = json.NewEncoder(w).Encode(map[string]any{"results": []any{}})
+				return
+			}
+			atomic.AddInt32(&searchCalls, 1)
+			_ = json.NewEncoder(w).Encode(map[string]any{
+				"results": []map[string]any{{
+					"id":             296753,
+					"name":           "折腰",
+					"overview":       "正确的剧集条目",
+					"poster_path":    "/zheyao.jpg",
+					"first_air_date": "2025-05-13",
+					"origin_country": []string{"CN"},
+				}},
+			})
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer upstream.Close()
+
+	db, err := gorm.Open(sqlite.Open("file::memory:?cache=shared"), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := db.AutoMigrate(&model.Library{}, &model.Series{}, &model.Media{}); err != nil {
+		t.Fatal(err)
+	}
+	repos := repository.New(db)
+	cfg := &config.Config{}
+	cfg.Secrets.TMDbAPIKey = "test-key"
+	cfg.Secrets.TMDbAPIProxy = upstream.URL
+	cfg.Secrets.TMDbImageProxy = upstream.URL + "/images"
+	log := zap.NewNop()
+	scraper := NewScraperService(cfg, log, repos, NewTMDbProvider(cfg, log, nil), nil, nil, nil, NewHub(log))
+
+	lib := model.Library{Name: "OpenList · 刮削缓存测试库", Path: "cloud://openlist/scrape-lookup-cache", Type: "tv", Enabled: true}
+	if err := repos.DB.Create(&lib).Error; err != nil {
+		t.Fatal(err)
+	}
+	const episodeCount = 4
+	for episode := 1; episode <= episodeCount; episode++ {
+		media := model.Media{
+			LibraryID:    lib.ID,
+			Title:        "折腰",
+			Path:         "cloud://openlist/scrape-lookup-cache/折腰 (2025)/Season 1/折腰.S01E0" + string(rune('0'+episode)) + ".mkv",
+			SeasonNum:    1,
+			EpisodeNum:   episode,
+			ScrapeStatus: "pending",
+		}
+		if err := repos.DB.Create(&media).Error; err != nil {
+			t.Fatal(err)
+		}
+	}
+
+	result, err := scraper.EnrichLibraryDetailedWithOptions(t.Context(), lib.ID, ScrapeOptions{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if result.Matched != episodeCount {
+		t.Fatalf("matched = %d, want %d", result.Matched, episodeCount)
+	}
+	if calls := atomic.LoadInt32(&searchCalls); calls != 1 {
+		t.Fatalf("tmdb /search/tv called %d times for %d episodes; want 1 (cache should dedupe identical queries)", calls, episodeCount)
+	}
+}
+
+// A cached match must be handed out as an independent copy: mutating one row's
+// result (localized title preference, local metadata merge) must not bleed into
+// the next row.
+func TestScrapeLookupCacheReturnsIndependentCopies(t *testing.T) {
+	cache := newScrapeLookupCache()
+	original := &Match{
+		Title:     "折腰",
+		TMDbID:    296753,
+		Genres:    []string{"剧情"},
+		Countries: []string{"CN"},
+		Aliases:   []string{"Zhe Yao"},
+	}
+	key := scrapeLookupCacheKey("tv", "折腰", 2025, false)
+	cache.set(key, original)
+
+	first, ok := cache.get(key)
+	if !ok || first == nil {
+		t.Fatal("expected a cache hit")
+	}
+	first.Title = "mutated"
+	first.Genres[0] = "mutated"
+	first.Aliases = append(first.Aliases, "extra")
+
+	second, ok := cache.get(key)
+	if !ok || second == nil {
+		t.Fatal("expected a second cache hit")
+	}
+	if second.Title != "折腰" || second.Genres[0] != "剧情" || len(second.Aliases) != 1 {
+		t.Fatalf("cached match was mutated through a returned copy: %+v", second)
+	}
+}
+
+// Negative results are cached too: a query that matched nothing must not be
+// re-issued for every remaining episode of the same show.
+func TestScrapeLookupCacheStoresNegativeResults(t *testing.T) {
+	cache := newScrapeLookupCache()
+	key := scrapeLookupCacheKey("tv", "no-such-show", 0, false)
+	cache.set(key, nil)
+	if _, ok := cache.get(key); !ok {
+		t.Fatal("negative result should be cached to avoid repeated provider calls")
+	}
+}
+
+// The theatrical flag is part of the key: a theatrical feature gets a tv
+// fallback lookup, so its result must not be shared with (or returned for)
+// the same query issued for a non-theatrical media row.
+func TestScrapeLookupCacheKeySeparatesTheatrical(t *testing.T) {
+	plain := scrapeLookupCacheKey("movie", "query", 2024, false)
+	theatrical := scrapeLookupCacheKey("movie", "query", 2024, true)
+	if plain == theatrical {
+		t.Fatalf("theatrical flag must be part of the cache key: %q", plain)
+	}
+}
+
+// A manual "retry no match" run clears stale negative entries so the provider
+// chain is actually re-queried instead of short-circuiting on the cached miss.
+func TestScrapeLookupCacheClearNegativesKeepsPositives(t *testing.T) {
+	cache := newScrapeLookupCache()
+	negKey := scrapeLookupCacheKey("tv", "missing", 0, false)
+	posKey := scrapeLookupCacheKey("tv", "found", 0, false)
+	cache.set(negKey, nil)
+	cache.set(posKey, &Match{Title: "found"})
+	cache.clearNegatives()
+	if _, ok := cache.get(negKey); ok {
+		t.Fatal("negative entry should be cleared before a manual retry")
+	}
+	if got, ok := cache.get(posKey); !ok || got == nil || got.Title != "found" {
+		t.Fatalf("positive entry should survive clearNegatives: %+v", got)
+	}
+}
@@ -7,6 +7,8 @@ type ScrapeOptions struct {
 	EpisodeArtwork      *bool
 	DeferEpisodeDetails bool
 	ForceRematch        bool
+	RebuildIdentity     bool
+	resultProvider      *string
 }

 func (o ScrapeOptions) episodeArtworkEnabled() bool {
@@ -17,3 +19,9 @@ func skipEpisodeArtworkOptions(retryNoMatch bool) ScrapeOptions {
 	episodeArtwork := false
 	return ScrapeOptions{RetryNoMatch: retryNoMatch, EpisodeArtwork: &episodeArtwork}
 }
+
+func (o ScrapeOptions) recordProvider(provider string) {
+	if o.resultProvider != nil {
+		*o.resultProvider = provider
+	}
+}
@@ -15,8 +15,42 @@ var (
 	episodeTitleQueryRE      = regexp.MustCompile(`^\s*第\s*[0-9一二三四五六七八九十百零两]+\s*[集期话話](?:\s*[上下])?\s*[:：].+`)
 	genericEpisodeWordsRE    = regexp.MustCompile(`^\s*第\s*[集期话話]\s*$`)
 	episodeReleaseTitleTagRE = regexp.MustCompile(`(?i)(?:^|[\s._-])s\d{1,2}e\d{1,3}(?:[\s._-]|$)`)
+	patTheatricalTitle       = regexp.MustCompile(`(?i)(?:剧场版|劇場版|动画电影|動畫電影|电影版|電影版|\bthe\s+movie\b|\bmovie\s*\d{1,2}\b)`)
+	patTheatricalFolder      = regexp.MustCompile(`(?i)[\\/][^\\/]*(?:剧场版|劇場版|動畫電影|动画电影|电影版|電影版)[^\\/]*[\\/]`)
+	theatricalNoiseRE        = regexp.MustCompile(`(?i)(?:剧场版|劇場版)\s*(?:第?\s*\d{1,3}\s*[部篇]?)?|电影版|電影版|动画电影|動畫電影`)
 )

+func theatricalTitleVariants(raw string) []string {
+	raw = strings.TrimSpace(raw)
+	if raw == "" {
+		return nil
+	}
+	if !theatricalNoiseRE.MatchString(raw) {
+		return []string{raw}
+	}
+	stripped := theatricalNoiseRE.ReplaceAllString(raw, " ")
+	stripped = strings.Join(strings.Fields(stripped), " ")
+	if stripped != "" && !strings.EqualFold(stripped, raw) {
+		return []string{stripped, raw}
+	}
+	return []string{raw}
+}
+
+func mediaLooksLikeTheatricalFeature(m *model.Media) bool {
+	if m == nil {
+		return false
+	}
+	// Trust an episode marker that is actually present in the path, but do not
+	// trust persisted season/episode fields here. Older scans could incorrectly
+	// assign those fields to a theatrical file, which would permanently prevent
+	// both manual re-scraping and separation from the TV series.
+	if season, ep := ParseEpisode(m.Path); season > 0 || ep > 0 {
+		return false
+	}
+	text := m.Title + " " + pathBaseSlash(m.Path)
+	return patTheatricalTitle.MatchString(text) || pathHasTheatricalFolder(m.Path)
+}
+
 func scrapeQueryCandidates(m *model.Media, lib *model.Library) []string {
 	return scrapeQueryCandidatesWithNormalizer(m, lib, func(raw string) (string, int) {
 		return CleanQuery(raw)
@@ -33,31 +67,59 @@ func scrapeQueryCandidatesWithNormalizer(m *model.Media, lib *model.Library, cle
 	seen := map[string]struct{}{}
 	var out []string
 	add := func(raw string) {
-		cleaned, _ := clean(raw)
-		if cleaned == "" {
-			cleaned = strings.TrimSpace(raw)
-		}
-		for _, candidate := range titleCandidates(cleaned) {
-			if unsafeAutomaticEpisodeQuery(candidate) {
-				continue
+		for _, variant := range theatricalTitleVariants(raw) {
+			cleaned, _ := clean(variant)
+			if cleaned == "" {
+				cleaned = strings.TrimSpace(variant)
 			}
-			key := strings.ToLower(candidate)
-			if _, ok := seen[key]; ok || candidate == "" {
-				continue
+			for _, candidate := range titleCandidates(cleaned) {
+				if unsafeAutomaticEpisodeQuery(candidate) {
+					continue
+				}
+				key := strings.ToLower(candidate)
+				if _, ok := seen[key]; ok || candidate == "" {
+					continue
+				}
+				seen[key] = struct{}{}
+				out = append(out, candidate)
 			}
-			seen[key] = struct{}{}
-			out = append(out, candidate)
 		}
 	}
-	episodic := mediaIsEpisodic(m, lib)
-	if lib != nil && episodic {
-		add(seriesFolderTitle(m.Path, lib.Path))
+
+	isTheatrical := mediaLooksLikeTheatricalFeature(m)
+	if isTheatrical {
+		add(m.Title)
+		add(m.Path)
+		if lib != nil {
+			seriesTitle := seriesFolderTitle(m.Path, lib.Path)
+			if seriesTitle != "" {
+				baseName := pathBaseSlash(m.Path)
+				stem := mediaFileStem(baseName)
+				if stem == "" {
+					stem = strings.TrimSuffix(baseName, filepath.Ext(baseName))
+				}
+				cleanStem, _ := clean(stem)
+				if cleanStem == "" {
+					cleanStem = stem
+				}
+				if !strings.Contains(strings.ToLower(cleanStem), strings.ToLower(seriesTitle)) {
+					add(seriesTitle + " " + cleanStem)
+				}
+			}
+			add(mediaFolderTitle(m.Path, lib.Path))
+		}
+	} else {
+		episodic := mediaIsEpisodic(m, lib)
+		if lib != nil && episodic {
+			add(seriesFolderTitle(m.Path, lib.Path))
+		}
+		if lib != nil {
+			add(mediaFolderTitle(m.Path, lib.Path))
+		}
+		add(m.Title)
+		add(m.Path)
 	}
-	if lib != nil {
-		add(mediaFolderTitle(m.Path, lib.Path))
-	}
-	add(m.Title)
-	add(m.Path)
+
 	if len(out) == 0 {
 		base := pathBaseSlash(m.Path)
 		out = append(out, strings.TrimSuffix(base, filepath.Ext(base)))
@@ -106,6 +168,9 @@ func containsCJK(s string) bool {
 }

 func mediaIsEpisodic(m *model.Media, lib *model.Library) bool {
+	if m != nil && mediaLooksLikeTheatricalFeature(m) {
+		return false
+	}
 	if m != nil && (m.SeasonNum > 0 || m.EpisodeNum > 0) {
 		return true
 	}
@@ -24,11 +24,15 @@ var noiseTokens = []string{
 	"hkfree", "yify", "rarbg", "ettv", "fgt", "tgx", "ctrlhd", "ntb", "flux", "qhstudio",

 	// 流媒体平台 / 字幕组 / 国家版本（动漫常见）
-	"netflix", "nf", "amzn", "hulu", "disney", "max", "hbo",
+	// 注意：不要把同时是常见英文单词的标记放进来（如 max / web / judas），
+	// 否则 "Mad Max"、"Web Therapy" 这类正常标题会被误删。裸 "WEB" 发布标记
+	// 通常位于分辨率之后，由 releaseBoundary 截断规则处理；"WEB-DL" 则由
+	// multiWordNoise 单独匹配。
+	"netflix", "nf", "amzn", "hulu", "disney", "hbo",
 	"linetv", "ourtv", "iqiyi", "youku", "bilibili", "qiyi", "krj",
 	"atvp", "appletv", "apple-tv", "tx", "txweb",
 	"crunchyroll", "funimation", "anidb", "horriblesubs", "subsplease",
-	"erai-raws", "judas", "asw", "smcat", "leopard-raws", "ohys-raws", "colortv",
+	"erai-raws", "asw", "smcat", "leopard-raws", "ohys-raws", "colortv",
 	"mweb", "ubweb", "hhweb", "adweb", "chdweb", "kurosawa", "qhstudio",

 	// 中文字幕标记
@@ -55,6 +59,20 @@ var releaseBoundaryTokenSet = map[string]struct{}{
 	"x264": {}, "x265": {}, "h264": {}, "h265": {}, "h266": {}, "hevc": {}, "avc": {}, "av1": {}, "vvc": {},
 }

+// weakReleaseBoundaryTokenSet are release tags that double as plausible title
+// words. Before any release signal has been seen they are kept as part of the
+// title ("Mad Max", "Web Therapy"), so a title is never truncated to nothing;
+// after a real signal they behave like any other tag.
+var weakReleaseBoundaryTokenSet = map[string]struct{}{
+	"bd": {}, "dvd": {}, "web": {},
+}
+
+// releaseSignalToken marks the position of an extracted year. The year itself
+// is not a title token, but its presence still proves the following tokens are
+// release tags ("复仇者联盟4.2019.BD.1080p" must drop "BD"). A control rune is
+// used so it can never collide with a real filename token.
+const releaseSignalToken = "\u0001"
+
 var dynamicReleaseBoundaryTokenRE = regexp.MustCompile(`(?i)^(?:\d{3,4}p|\d{2,3}fps)$`)

 // bracketedTag matches "[anything]", "(anything)" or "{anything}" segments.
@@ -86,7 +104,9 @@ func CleanQuery(raw string) (title string, year int) {
 	if m := yearPattern.FindStringSubmatch(lower); len(m) >= 2 {
 		if v, err := strconv.Atoi(m[1]); err == nil {
 			year = v
-			lower = strings.ReplaceAll(lower, m[1], " ")
+			// Keep a positional marker: the year is not a title token, but its
+			// presence arms release-tag truncation for what follows.
+			lower = strings.ReplaceAll(lower, m[1], " "+releaseSignalToken+" ")
 		}
 	}

@@ -110,17 +130,35 @@ func CleanQuery(raw string) (title string, year int) {
 	}
 	// 拆分后丢掉过短（≤1）且全为 ASCII 数字 / 字母的"碎片"，避免
 	// 「2」「0」「v」之类残留干扰 TMDb 搜索。中文字符不算碎片。
+	//
+	// seenReleaseBoundary 只有在遇到分辨率/编码等强标记后才置位，置位后其余
+	// ASCII 词一律视为发布尾巴丢弃；releaseSignalled 则宽松得多，年份标记也会
+	// 置位，它只用来武装弱标记（bd/dvd/web）。这样 "Web Therapy" 不会被截空，
+	// 而 "2019.Avatar.1080p" 这种年份前置的标题也不会因为年份标记把后面的
+	// 真实标题词当成尾巴丢掉。
 	out := make([]string, 0, 8)
 	seenReleaseBoundary := false
+	releaseSignalled := false
 	for _, w := range strings.Fields(lower) {
+		if w == releaseSignalToken {
+			releaseSignalled = true
+			continue
+		}
 		if dynamicReleaseBoundaryTokenRE.MatchString(w) {
+			releaseSignalled = true
 			seenReleaseBoundary = true
 			continue
 		}
-		if _, ok := noiseTokenSet[w]; ok {
-			if _, boundary := releaseBoundaryTokenSet[w]; boundary {
+		if _, boundary := releaseBoundaryTokenSet[w]; boundary {
+			if _, weak := weakReleaseBoundaryTokenSet[w]; weak && !releaseSignalled {
+				// Ambiguous tag that is also a plausible title word; keep it
+				// until a real release signal proves we are past the title.
+			} else {
+				releaseSignalled = true
 				seenReleaseBoundary = true
+				continue
 			}
+		} else if _, ok := noiseTokenSet[w]; ok {
 			continue
 		}
 		if seenReleaseBoundary && isASCIIWord(w) {
@@ -0,0 +1,77 @@
+package service
+
+import "testing"
+
+// CleanQuery must not delete words that are also ordinary English title words
+// just because a release group reused them as a tag. Regression guard: "max"
+// and "web" used to be unconditional noise/boundary tokens, which turned
+// "Mad Max" into "mad" and "Web Therapy" into an empty query.
+func TestCleanQueryKeepsCommonEnglishTitleWords(t *testing.T) {
+	cases := []struct {
+		in        string
+		wantTitle string
+		wantYear  int
+	}{
+		{"Mad.Max.1979.1080p.BluRay.mkv", "mad max", 1979},
+		{"Max.Payne.2008.1080p.WEB-DL.mkv", "max payne", 2008},
+		{"Web.Therapy.S01E01.1080p.WEB-DL.mkv", "web therapy", 0},
+		{"The.Web.2019.1080p.mkv", "the web", 2019},
+	}
+	for _, tc := range cases {
+		t.Run(tc.in, func(t *testing.T) {
+			gotTitle, gotYear := CleanQuery(tc.in)
+			if gotTitle != tc.wantTitle || gotYear != tc.wantYear {
+				t.Errorf("CleanQuery(%q) = (%q, %d), want (%q, %d)",
+					tc.in, gotTitle, gotYear, tc.wantTitle, tc.wantYear)
+			}
+		})
+	}
+}
+
+// A title consisting only of an ambiguous tag plus a release tail must not be
+// truncated to nothing; the tag stays so the query still has a chance.
+func TestCleanQueryDoesNotTruncateAmbiguousTagToNothing(t *testing.T) {
+	for _, in := range []string{"Web.1080p.WEB-DL.mkv", "BD.720p.mkv"} {
+		title, _ := CleanQuery(in)
+		if title == "" {
+			t.Errorf("CleanQuery(%q) returned an empty title", in)
+		}
+	}
+}
+
+// A year-prefixed filename must keep its title: the year arms weak-tag
+// truncation but must not discard the real title words that follow it.
+func TestCleanQueryKeepsTitleAfterYearPrefix(t *testing.T) {
+	cases := map[string]string{
+		"2019.Avatar.1080p.BluRay.mkv":     "avatar",
+		"2024.Dune.Part.Two.2160p.WEB.mkv": "dune part two",
+	}
+	for in, want := range cases {
+		t.Run(in, func(t *testing.T) {
+			got, year := CleanQuery(in)
+			if got != want {
+				t.Errorf("CleanQuery(%q) = (%q, %d), want title %q", in, got, year, want)
+			}
+		})
+	}
+}
+
+// Release-tag truncation must still fire once a real release signal (an
+// extracted year, resolution or codec) has been seen, so tags after it are
+// dropped as before.
+func TestCleanQueryStillDropsTagsAfterReleaseSignal(t *testing.T) {
+	cases := map[string]string{
+		"复仇者联盟4.2019.BD.1080p.mkv":               "复仇者联盟4",
+		"The.Matrix.1999.1080p.WEB-DL.H265.mp4":  "the matrix",
+		"Oppenheimer.2023.2160p.UHD.BluRay.mkv":  "oppenheimer",
+		"Interstellar.2014.4k.hdr.dts.atmos.mkv": "interstellar",
+	}
+	for in, want := range cases {
+		t.Run(in, func(t *testing.T) {
+			got, _ := CleanQuery(in)
+			if got != want {
+				t.Errorf("CleanQuery(%q) = %q, want %q", in, got, want)
+			}
+		})
+	}
+}
@@ -1,6 +1,11 @@
 package service

-import "strings"
+import (
+	"regexp"
+	"strings"
+)
+
+var namedTheatricalFolderRE = regexp.MustCompile(`(?i)(?:剧场版|劇場版|动画电影|動畫電影|电影版|電影版)`)

 func mediaFolderTitle(mediaPath, libraryRoot string) string {
 	dir := parentSlashPath(mediaPath)
@@ -13,7 +18,7 @@ func mediaFolderTitle(mediaPath, libraryRoot string) string {
 		if base == "" || base == "." {
 			return ""
 		}
-		if isTechnicalMediaFolder(base) || strictSeasonFolderMatched(base) {
+		if isTechnicalMediaFolder(base) || strictSeasonFolderMatched(base) || isTheatricalFolder(base) {
 			dir = parentSlashPath(dir)
 			continue
 		}
@@ -104,7 +109,7 @@ func parentSlashPath(value string) string {

 func seriesFolderTitle(mediaPath, libraryRoot string) string {
 	dir := parentSlashPath(mediaPath)
-	if strictSeasonFolderMatched(pathBaseSlash(dir)) {
+	if strictSeasonFolderMatched(pathBaseSlash(dir)) || isTheatricalFolder(pathBaseSlash(dir)) {
 		dir = parentSlashPath(dir)
 	}
 	if root := comparableLibraryRoot(libraryRoot); root != "" && sameSlashPath(dir, root) {
@@ -114,12 +119,39 @@ func seriesFolderTitle(mediaPath, libraryRoot string) string {
 	if base == "" || base == "." {
 		return ""
 	}
-	if isGenericMediaCategoryFolder(base) || isTechnicalMediaFolder(base) || strictSeasonFolderMatched(base) {
+	if isGenericMediaCategoryFolder(base) || isTechnicalMediaFolder(base) || strictSeasonFolderMatched(base) || isTheatricalFolder(base) {
 		return ""
 	}
 	return base
 }

+func isTheatricalFolder(name string) bool {
+	key := strings.ToLower(strings.TrimSpace(name))
+	key = strings.Trim(key, `\/`)
+	if namedTheatricalFolderRE.MatchString(key) {
+		return true
+	}
+	switch key {
+	case "剧场版", "劇場版", "动画电影", "動畫電影", "特别篇", "特別篇",
+		"special", "specials", "sp", "ova", "ovas", "oad", "oads", "ovd", "ovds", "ona", "onas",
+		"extra", "extras", "bonus", "bonuses", "omake", "picture drama", "ncop", "nced", "画像特典":
+		return true
+	default:
+		return false
+	}
+}
+
+func pathHasTheatricalFolder(path string) bool {
+	for _, part := range strings.FieldsFunc(path, func(r rune) bool {
+		return r == '/' || r == '\\'
+	}) {
+		if isTheatricalFolder(part) && namedTheatricalFolderRE.MatchString(part) {
+			return true
+		}
+	}
+	return false
+}
+
 func libraryRootTitle(libraryRoot string) string {
 	base := ""
 	if info, ok := ParseCloudLibraryMount(libraryRoot); ok {
@@ -48,6 +48,17 @@ func TestCleanQuery(t *testing.T) {
 	}
 }

+func TestCleanQueryIgnoresKeepExtSTRMSuffix(t *testing.T) {
+	plain := filepath.Join("/media/anime", "Jigokuraku 2023 S01E14.strm")
+	keepExt := filepath.Join("/media/anime", "Jigokuraku 2023 S01E14.mkv.strm")
+	plainTitle, plainYear := CleanQuery(plain)
+	keepTitle, keepYear := CleanQuery(keepExt)
+	if plainTitle != keepTitle || plainYear != keepYear {
+		t.Fatalf("keep_ext changed scrape identity: plain=(%q,%d) keep_ext=(%q,%d)",
+			plainTitle, plainYear, keepTitle, keepYear)
+	}
+}
+
 func TestScrapeQueryCandidatesCleanDirtySeriesFolder(t *testing.T) {
 	lib := &model.Library{
 		Path: `F:\media\电视剧\欧美剧`,
@@ -115,10 +115,12 @@ func (s *ScraperService) processScrapeTask(ctx context.Context, task *model.Scra
 	}

 	epArtwork := task.EpisodeImages
+	usedProvider := ""
 	options := ScrapeOptions{
 		EpisodeArtwork: &epArtwork,
 		IncludeMatched: task.RefreshMatched,
 		RetryNoMatch:   true,
+		resultProvider: &usedProvider,
 	}

 	enrichErr := s.EnrichOneWithOptions(ctx, media, options)
@@ -133,16 +135,9 @@ func (s *ScraperService) processScrapeTask(ctx context.Context, task *model.Scra
 		task.MatchedYear = refreshed.Year
 		task.PosterURL = refreshed.PosterURL
 		task.BackdropURL = refreshed.BackdropURL
-		if refreshed.TMDbID > 0 {
-			task.Provider = "tmdb"
-		} else if strings.TrimSpace(refreshed.DoubanID) != "" {
-			task.Provider = "douban"
-		} else if refreshed.BangumiID > 0 {
-			task.Provider = "bangumi"
-		} else if strings.TrimSpace(refreshed.TheTVDBID) != "" {
-			task.Provider = "thetvdb"
-		} else {
-			task.Provider = "metatube"
+		task.Provider = strings.ToLower(strings.TrimSpace(usedProvider))
+		if task.Provider == "" {
+			task.Provider = "unknown"
 		}
 	} else {
 		task.Status = model.ScrapeTaskFailed
@@ -1,6 +1,7 @@
 package service

 import (
+	"sync"
 	"time"

 	"go.uber.org/zap"
@@ -24,6 +25,14 @@ type ScraperService struct {
 	hub     *Hub
 	cache   *RuntimeCacheService
 	images  *ImageProxy
+
+	// Caches provider-chain results keyed by media kind/query/year. Per-instance
+	// so services with different provider config never share results.
+	lookupCache *scrapeLookupCache
+
+	// Serializes final sidecar replacement. Windows cannot rename over an
+	// existing file, and concurrent scrapes can target the same sidecar.
+	artworkWriteMu sync.Mutex
 }

 // NewScraperService is the constructor.
@@ -45,6 +54,7 @@ func NewScraperService(
 	return &ScraperService{
 		cfg: cfg, log: log, repo: repo,
 		tmdb: tmdb, bangumi: bangumi, thetvdb: thetvdb, fanart: fanart, adult: adultProvider, hub: hub,
+		lookupCache: newScrapeLookupCache(),
 	}
 }

@@ -44,38 +44,91 @@ func (s *ScraperService) writeMediaArtworkFilesAfterScrape(ctx context.Context,
 	if base == "" || base == "." {
 		return
 	}
-	isAdult := IsAdultMediaPathOrMetadata(refreshed.Path, refreshed.LibraryID, refreshed.NSFW) || IsAdultArtworkURL(refreshed.PosterURL)
+	isAdult := shouldCropAdultPoster(refreshed, lib)
+	artworkUpdates := map[string]any{}
+	shouldPersistLocalArtworkURL := func(raw string) bool {
+		return isAdult || !isHTTPish(raw)
+	}
 	if refreshed.PosterURL != "" {
-		s.downloadArtworkToPathWithOptions(ctx, dir, base+"-poster", refreshed.PosterURL, isAdult)
+		if dst := s.downloadArtworkToPathWithOptions(ctx, dir, base+"-poster", refreshed.PosterURL, isAdult); dst != "" {
+			if shouldPersistLocalArtworkURL(refreshed.PosterURL) {
+				artworkUpdates["poster_url"] = filepath.Join(filepath.Dir(refreshed.Path), filepath.Base(dst))
+			}
+		}
 	}
 	if refreshed.BackdropURL != "" {
-		s.downloadArtworkToPathWithOptions(ctx, dir, base+"-backdrop", refreshed.BackdropURL, false)
+		if dst := s.downloadArtworkToPathWithOptions(ctx, dir, base+"-backdrop", refreshed.BackdropURL, false); dst != "" {
+			if shouldPersistLocalArtworkURL(refreshed.BackdropURL) {
+				artworkUpdates["backdrop_url"] = filepath.Join(filepath.Dir(refreshed.Path), filepath.Base(dst))
+			}
+		}
 	} else if isAdult && refreshed.PosterURL != "" {
 		// 番号海报原图为完整封套横图，在无独立背景图时直接作为背景图写出
-		s.downloadArtworkToPathWithOptions(ctx, dir, base+"-backdrop", refreshed.PosterURL, false)
+		if dst := s.downloadArtworkToPathWithOptions(ctx, dir, base+"-backdrop", refreshed.PosterURL, false); dst != "" {
+			artworkUpdates["backdrop_url"] = filepath.Join(filepath.Dir(refreshed.Path), filepath.Base(dst))
+		}
+	}
+	if len(artworkUpdates) > 0 {
+		if err := s.repo.DB.WithContext(ctx).Model(&model.Media{}).
+			Where("id = ?", refreshed.ID).Updates(artworkUpdates).Error; err != nil {
+			s.log.Warn("save local scraped artwork paths failed", zap.String("media_id", refreshed.ID), zap.Error(err))
+		}
 	}
 }

-func (s *ScraperService) downloadArtworkToPath(ctx context.Context, dir, name, raw string) {
-	s.downloadArtworkToPathWithOptions(ctx, dir, name, raw, false)
+func (s *ScraperService) downloadArtworkToPath(ctx context.Context, dir, name, raw string) string {
+	return s.downloadArtworkToPathWithOptions(ctx, dir, name, raw, false)
+}
+
+// shouldCropAdultPoster keeps adult-cover handling independent of which
+// metadata provider won. A code-numbered title may match TMDb first, so the
+// provider's NSFW flag or artwork host alone is not sufficient.
+func shouldCropAdultPoster(media *model.Media, lib *model.Library) bool {
+	if media == nil {
+		return false
+	}
+	mediaType := ""
+	if lib != nil {
+		mediaType = lib.Type
+	}
+	return IsAdultMediaPathOrMetadata(media.Path, mediaType, media.NSFW) ||
+		IsAdultArtworkURL(media.PosterURL)
 }

 // downloadArtworkToPathWithOptions fetches an artwork URL via the image proxy cache and
 // writes it under dir/<name>.<ext>. For adult posters, it crops the right half of the cover.
-func (s *ScraperService) downloadArtworkToPathWithOptions(ctx context.Context, dir, name, raw string, cropAdultPoster bool) {
-	if !isHTTPish(raw) {
-		return
+func (s *ScraperService) downloadArtworkToPathWithOptions(ctx context.Context, dir, name, raw string, cropAdultPoster bool) string {
+	var (
+		data  []byte
+		ctype string
+		err   error
+	)
+	switch {
+	case isHTTPish(raw):
+		data, ctype, err = s.images.Fetch(ctx, raw)
+	case isLocalImagePath(raw):
+		data, err = os.ReadFile(sanitizeLocalPath(resolveMappedDestinationPath(raw)))
+		if err == nil {
+			ctype = detectContentType(data)
+		}
+	default:
+		return ""
 	}
-	data, ctype, err := s.images.Fetch(ctx, raw)
 	if err != nil || len(data) == 0 {
 		s.log.Warn("scrape artwork download failed",
 			zap.String("name", name),
 			zap.String("url", raw),
 			zap.Error(err))
-		return
+		return ""
 	}
 	if !isImageContentType(ctype) || isTransparentPlaceholderData(data) {
-		return
+		return ""
+	}
+	// Upstreams sometimes report non-standard values such as image/jpg.
+	// Use the decoded bytes as the source of truth so sidecars receive a
+	// standard extension instead of the legacy .img fallback.
+	if detected := detectContentType(data); isImageContentType(detected) {
+		ctype = detected
 	}
 	if cropAdultPoster {
 		if cropped, croppedType, err := CropAdultCoverPoster(data); err == nil && len(cropped) > 0 {
@@ -83,7 +136,7 @@ func (s *ScraperService) downloadArtworkToPathWithOptions(ctx context.Context, d
 			ctype = croppedType
 		}
 	}
-	s.writeArtworkDataToPath(dir, name, ctype, data)
+	return s.writeArtworkDataToPath(dir, name, ctype, data)
 }

 // writeArtworkDataToPath writes in-memory artwork bytes to dir/<name>.<ext>
@@ -110,10 +163,23 @@ func (s *ScraperService) writeArtworkDataToPath(dir, name, ctype string, data []
 		s.log.Warn("scrape artwork write failed", zap.String("dst", dst), zap.Error(err))
 		return ""
 	}
-	_ = tmp.Close()
-	if err := os.Rename(tmp.Name(), dst); err != nil {
+	if err := tmp.Close(); err != nil {
 		_ = os.Remove(tmp.Name())
-		s.log.Warn("scrape artwork rename failed", zap.String("dst", dst), zap.Error(err))
+		s.log.Warn("scrape artwork close failed", zap.String("dst", dst), zap.Error(err))
+		return ""
+	}
+
+	// On Windows os.Rename does not replace dst. Serialize remove+rename so two
+	// concurrent scrapes cannot leave the previous uncropped DVD cover behind.
+	s.artworkWriteMu.Lock()
+	err = os.Remove(dst)
+	if err == nil || os.IsNotExist(err) {
+		err = os.Rename(tmp.Name(), dst)
+	}
+	s.artworkWriteMu.Unlock()
+	if err != nil {
+		_ = os.Remove(tmp.Name())
+		s.log.Warn("scrape artwork replace failed", zap.String("dst", dst), zap.Error(err))
 		return ""
 	}
 	s.log.Debug("scrape artwork written", zap.String("dst", dst))
@@ -125,7 +191,7 @@ func (s *ScraperService) writeArtworkDataToPath(dir, name, ctype string, data []
 // extension that could confuse media players.
 func imageExtForContentType(ctype string) string {
 	switch strings.ToLower(strings.TrimSpace(strings.Split(ctype, ";")[0])) {
-	case "image/jpeg", "image/pjpeg":
+	case "image/jpeg", "image/jpg", "image/pjpeg":
 		return ".jpg"
 	case "image/png", "image/x-png":
 		return ".png"
@@ -1,13 +1,22 @@
 package service

 import (
+	"bytes"
+	"image"
+	"image/color"
+	"net/http"
+	"net/http/httptest"
 	"os"
 	"path/filepath"
 	"testing"

+	"github.com/glebarez/sqlite"
 	"go.uber.org/zap"
+	"gorm.io/gorm"

+	"github.com/truewhile/MeBox/internal/config"
 	"github.com/truewhile/MeBox/internal/model"
+	"github.com/truewhile/MeBox/internal/repository"
 )

 // TestWriteArtworkDataToPathWritesJellyfinSidecar verifies that in-memory
@@ -33,11 +42,53 @@ func TestWriteArtworkDataToPathWritesJellyfinSidecar(t *testing.T) {
 	}
 }

+func TestWriteArtworkDataToPathReplacesExistingSidecar(t *testing.T) {
+	scraper := &ScraperService{log: zap.NewNop()}
+	mediaDir := t.TempDir()
+	dst := filepath.Join(mediaDir, "poster.jpg")
+	if err := os.WriteFile(dst, []byte("old DVD cover"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	if got := scraper.writeArtworkDataToPath(mediaDir, "poster", "image/jpeg", testJPEG); got != dst {
+		t.Fatalf("destination = %q, want %q", got, dst)
+	}
+	data, err := os.ReadFile(dst)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if string(data) != string(testJPEG) {
+		t.Fatal("existing sidecar was not replaced")
+	}
+}
+
+func TestShouldCropAdultPosterWhenTMDbArtworkMatchedCodePath(t *testing.T) {
+	media := &model.Media{
+		Path:      filepath.Join(t.TempDir(), "IPX-235.mp4"),
+		Title:     "TMDb matched title",
+		PosterURL: "https://image.tmdb.org/t/p/w500/poster.jpg",
+	}
+	if !shouldCropAdultPoster(media, &model.Library{Type: "movie"}) {
+		t.Fatal("code-numbered media should retain adult crop handling after a TMDb match")
+	}
+}
+
+func TestShouldCropAdultPosterUsesLibraryType(t *testing.T) {
+	media := &model.Media{
+		Path:      filepath.Join(t.TempDir(), "renamed.mp4"),
+		PosterURL: "https://image.tmdb.org/t/p/w500/poster.jpg",
+	}
+	if !shouldCropAdultPoster(media, &model.Library{Type: "adult"}) {
+		t.Fatal("adult library media should be cropped regardless of provider")
+	}
+}
+
 // TestImageExtForContentType verifies the MIME -> extension mapping used to
 // name Jellyfin sidecar files.
 func TestImageExtForContentType(t *testing.T) {
 	cases := map[string]string{
 		"image/jpeg":                 ".jpg",
+		"image/jpg":                  ".jpg",
 		"image/pjpeg":                ".jpg",
 		"image/png":                  ".png",
 		"image/webp":                 ".webp",
@@ -53,6 +104,32 @@ func TestImageExtForContentType(t *testing.T) {
 	}
 }

+func TestDownloadArtworkMigratesLocalImgToCanonicalCroppedJPEG(t *testing.T) {
+	scraper := &ScraperService{log: zap.NewNop()}
+	dir := t.TempDir()
+	legacy := filepath.Join(dir, "movie-poster.img")
+	wide := createTestImage(900, 600, color.RGBA{R: 255, A: 255}, color.RGBA{B: 255, A: 255})
+	if err := os.WriteFile(legacy, wide, 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	dst := scraper.downloadArtworkToPathWithOptions(t.Context(), dir, "movie-poster", legacy, true)
+	if filepath.Base(dst) != "movie-poster.jpg" {
+		t.Fatalf("destination = %q, want canonical JPEG sidecar", dst)
+	}
+	data, err := os.ReadFile(dst)
+	if err != nil {
+		t.Fatal(err)
+	}
+	cropped, _, err := image.Decode(bytes.NewReader(data))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got := float64(cropped.Bounds().Dx()) / float64(cropped.Bounds().Dy()); got < 0.65 || got > 0.68 {
+		t.Fatalf("migrated poster ratio = %.3f, want 2:3", got)
+	}
+}
+
 // TestWriteMediaArtworkFilesAfterScrapeSkipsCloud verifies that cloud media
 // never has artwork written anywhere.
 func TestWriteMediaArtworkFilesAfterScrapeSkipsCloud(t *testing.T) {
@@ -87,3 +164,65 @@ func TestSameDirectoryMediaUsesBaseScopedSidecars(t *testing.T) {
 		t.Fatalf("base = %q, want A-poster.jpg", filepath.Base(dst))
 	}
 }
+
+func TestLocalAdultArtworkStoresFaceAwarePosterPath(t *testing.T) {
+	wideCover := createTestImage(
+		900,
+		600,
+		color.RGBA{R: 255, A: 255},
+		color.RGBA{B: 255, A: 255},
+	)
+	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+		w.Header().Set("Content-Type", "image/jpeg")
+		_, _ = w.Write(wideCover)
+	}))
+	defer upstream.Close()
+
+	cfg := &config.Config{}
+	cfg.Cache.CacheDir = t.TempDir()
+	images := NewImageProxy(cfg, zap.NewNop())
+	images.allowedRemoteHostsFn = func() []string { return []string{"127.0.0.1"} }
+
+	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := db.AutoMigrate(&model.Media{}); err != nil {
+		t.Fatal(err)
+	}
+	repos := repository.New(db)
+	mediaDir := t.TempDir()
+	media := model.Media{
+		Title:        "IPX-235",
+		Path:         filepath.Join(mediaDir, "IPX-235.mp4"),
+		PosterURL:    upstream.URL + "/cover.jpg",
+		NSFW:         true,
+		ScrapeStatus: "matched",
+	}
+	if err := repos.DB.Create(&media).Error; err != nil {
+		t.Fatal(err)
+	}
+
+	scraper := &ScraperService{cfg: cfg, log: zap.NewNop(), repo: repos, images: images}
+	scraper.writeMediaArtworkFilesAfterScrape(t.Context(), &media, &model.Library{Type: "adult"})
+
+	var got model.Media
+	if err := repos.DB.First(&got, "id = ?", media.ID).Error; err != nil {
+		t.Fatal(err)
+	}
+	if filepath.Base(got.PosterURL) != "IPX-235-poster.jpg" {
+		t.Fatalf("poster URL = %q, want local face-aware sidecar", got.PosterURL)
+	}
+	data, err := os.ReadFile(got.PosterURL)
+	if err != nil {
+		t.Fatal(err)
+	}
+	cropped, _, err := image.Decode(bytes.NewReader(data))
+	if err != nil {
+		t.Fatal(err)
+	}
+	ratio := float64(cropped.Bounds().Dx()) / float64(cropped.Bounds().Dy())
+	if ratio < 0.65 || ratio > 0.68 {
+		t.Fatalf("local poster ratio = %.3f, want MetaTube primary ratio", ratio)
+	}
+}
@@ -124,6 +124,7 @@ func (b *serviceContainerBuilder) initContentServices() {
 	// STRM 直连失败后的 HLS 转码：把 .strm 解析成 ffmpeg 可读取的本地路径或 HTTP 直链。
 	b.c.Transcoder.SetStrmPlayTargetResolver(b.c.Strm.ResolvePlayTarget)
 	b.c.Transcoder.SetProbe(b.c.FFprobe)
+	b.c.Subtitle.SetStrmPlayTargetResolver(b.c.Strm.ResolvePlayTarget)
 	// 弹幕识别需要把远程 Emby 条目解析为 Media 元数据及可拉取前 16MB 的直链 URL。
 	if b.c.EmbyRemote != nil {
 		b.c.Danmaku.SetRemoteMediaResolver(func(ctx context.Context, encodedID string) (*model.Media, string, error) {
@@ -24,11 +24,18 @@ func (s *StreamService) ServeHLSPlaylist(w http.ResponseWriter, r *http.Request,
 		return ErrTranscodeDisabled
 	}
 	startSec := parseHLSStartSec(r)
-	if _, err := s.transcoder.EnsureJobFrom(r.Context(), mediaID, startSec); err != nil {
+	seekGen := parseHLSSeekGen(r)
+	subtitleStream := parseHLSSubtitleStream(r)
+	if _, err := s.transcoder.EnsureJobFromSubtitle(r.Context(), mediaID, startSec, seekGen, subtitleStream); err != nil {
 		return err
 	}
 	s.transcoder.TouchJob(mediaID)
-	if !s.transcoder.WaitReady(r.Context(), mediaID, 30*time.Second) {
+	readyTimeout := 45 * time.Second
+	if startSec > 0.05 {
+		// Mid-file HTTP seeks (esp. WMV) need longer before the first segment appears.
+		readyTimeout = 120 * time.Second
+	}
+	if !s.transcoder.WaitReady(r.Context(), mediaID, readyTimeout) {
 		return errors.New("hls playlist not ready")
 	}
 	playlist := s.transcoder.PlaylistPath(mediaID)
@@ -54,6 +61,21 @@ func (s *StreamService) ServeHLSPlaylist(w http.ResponseWriter, r *http.Request,
 	return nil
 }

+func parseHLSSubtitleStream(r *http.Request) int {
+	if r == nil {
+		return -1
+	}
+	raw := strings.TrimSpace(r.URL.Query().Get("subtitle"))
+	if raw == "" {
+		return -1
+	}
+	v, err := strconv.Atoi(raw)
+	if err != nil || v < 0 {
+		return -1
+	}
+	return v
+}
+
 func parseHLSStartSec(r *http.Request) float64 {
 	if r == nil {
 		return 0
@@ -69,12 +91,27 @@ func parseHLSStartSec(r *http.Request) float64 {
 	return v
 }

+func parseHLSSeekGen(r *http.Request) int64 {
+	if r == nil {
+		return 0
+	}
+	raw := strings.TrimSpace(r.URL.Query().Get("_seek"))
+	if raw == "" {
+		return 0
+	}
+	v, err := strconv.ParseInt(raw, 10, 64)
+	if err != nil || v < 0 {
+		return 0
+	}
+	return v
+}
+
 func appendQueryToHLSSegments(playlist, rawQuery string) string {
 	if strings.TrimSpace(rawQuery) == "" {
 		return playlist
 	}
-	// Segment fetches only need auth/profile tokens; drop start= so a seek
-	// restart does not keep forcing EnsureJobFrom on every .ts hit.
+	// Segment fetches do not need start=, but must keep _seek as a cache-busting
+	// generation because every transcode restart reuses seg_00000.ts names.
 	q := filterHLSSegmentQuery(rawQuery)
 	if q == "" {
 		return playlist
@@ -110,7 +147,7 @@ func filterHLSSegmentQuery(rawQuery string) string {
 			key = part[:i]
 		}
 		switch strings.ToLower(key) {
-		case "start", "_seek":
+		case "start":
 			continue
 		}
 		kept = append(kept, part)
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
truewhile	8f64f961ac	缓存弹幕抓取结果并合并并发请求	2026-09-12 11:02:24 +08:00
truewhile	6797394c5b	Serve font assets with caching and test missing-font handling	2026-09-12 10:33:51 +08:00
truewhile	e71d9d61d1	优先使用刮削元数据匹配弹幕剧集	2026-09-12 10:27:55 +08:00
truewhile	1ff60d5641	完善应用功能与界面交互	2026-09-12 01:00:19 +08:00
truewhile	3f361631d0	修复搜索下拉框异步响应导致的意外展开	2026-09-11 21:30:30 +08:00
truewhile	cfe0c0cf28	Preserve media metadata across STRM path renames	2026-09-11 20:45:54 +08:00
truewhile	d6355d5582	Keep TV episodes as mixed-series representatives	2026-09-11 19:52:49 +08:00
truewhile	0f06bdf929	支持 ASS 字幕原样渲染与字幕显示设置	2026-09-11 19:35:08 +08:00
truewhile	e840cbd2c9	处理bug	2026-09-11 15:35:02 +08:00
truewhile	2bb3610da7	添加繁体转简体，简体转繁体功能	2026-09-11 15:14:24 +08:00
truewhile	9ca1b28cb4	优化	2026-09-10 22:30:17 +08:00
truewhile	9effb1422b	优化	2026-09-10 22:06:28 +08:00
truewhile	b855e00345	优化	2026-09-10 16:58:41 +08:00
truewhile	8f2551a1b6	优化排序	2026-09-09 22:24:45 +08:00
truewhile	18e6cb40fd	完善动漫特别内容分类与版本判定 Co-authored-by: Cursor <cursoragent@cursor.com>	2026-09-09 22:03:52 +08:00
truewhile	92e693ccac	优化	2026-09-09 20:32:03 +08:00
truewhile	62206aa05a	优化	2026-09-09 19:26:22 +08:00
truewhile	f9dd082159	优化动漫刮削	2026-09-09 17:36:11 +08:00
truewhile	d489c1608e	优化strm多版本显示	2026-09-09 17:07:21 +08:00
truewhile	1ea29cca9e	bug处理	2026-09-09 00:39:00 +08:00
truewhile	ec5f81e6cb	bug处理	2026-09-09 00:18:04 +08:00
truewhile	8eb017fedc	优化	2026-09-09 00:03:14 +08:00
truewhile	fb4e762026	优化	2026-09-08 23:44:20 +08:00
truewhile	4239474100	优化	2026-09-08 23:11:57 +08:00
truewhile	8225b4e319	优化	2026-09-08 23:05:07 +08:00
truewhile	c086b01381	优化	2026-09-08 22:44:36 +08:00
truewhile	f196e5621f	优化	2026-09-08 22:12:26 +08:00
truewhile	13d60b3bd9	分集图片设置落库	2026-09-08 22:00:06 +08:00
truewhile	3d30f6f27c	bug处理	2026-09-08 21:08:47 +08:00
truewhile	bd02e194ff	优化	2026-09-08 20:52:35 +08:00
truewhile	1c9b742c8d	优化	2026-09-08 20:24:45 +08:00
truewhile	20e7d7fa99	bug处理	2026-09-08 18:12:52 +08:00
truewhile	394ea0382e	优化	2026-09-08 09:46:02 +08:00
truewhile	4d698d2757	优化播放	2026-09-08 09:24:29 +08:00
truewhile	fdfb2ee987	bug处理	2026-09-08 08:41:01 +08:00
truewhile	b23b1d728e	bug处理	2026-09-08 00:36:56 +08:00
truewhile	ad427fc0d2	bug处理	2026-09-08 00:10:25 +08:00