fix(media): 修复emby电影库混入剧集/特别篇识别/剧集合集 + 新增手动编辑元数据

emby 兼容层(hills/yamby 等客户端):
- 电影库不再混入剧集:filterLikelyEpisodicPathsFromMovieQuery 按路径
  特征(Season/S0x/Specials/电视剧/日番/国漫等)剔除误入电影库的剧集
- itemPayload 改用 mediaShouldBeEpisode:有季集号且(属剧集库或路径像剧集)
  才标记为 Episode,修正电影库里剧集被当成 Movie

特别篇识别:
- episode_parser 新增 patSpecialSeason,识别 S0/Season 0/Specials/SP/OVA/
  OAD/番外/特别篇/特典 文件夹 → 第0季;seasonFromParents 返回 found 标志,
  区分"明确第0季"与"未识别默认第1季"
- emby seasonDir 正则同步支持 Specials/SP/OVA/特别篇 等

剧集合集:
- groupSeries 抽出 isSeriesCard,卡片链接按是否剧集判定,修复剧集卡片
  跳转;每集分离的根因(季集号/分组key)随入库识别修复一并改善

手动编辑元数据(自采集视频无TMDB信息时可自定义封面/标题/简介/分类):
- 新增 MediaService.UpdateMetadata + PATCH /media/:id/metadata(需admin)
- 前端 MetadataEditDialog 接入 LibraryPage 与 MediaDetailPage

其他:scanner/scraper/nfo/local+cloud_metadata/adult 元数据识别配套改进;
.gitignore 忽略本地 .dev-cache/.dev-data 运行产物。

internal/repository/repository.go

@@ -377,28 +377,31 @@ func (r *MediaRepository) upsert(ctx context.Context, m *model.Media) error {
 			}
 		}
 	}
-	if existing.ScrapeStatus == "pending" || existing.ScrapeStatus == "" || existing.ScrapeStatus == "no_match" {
-		backfilledExternalID := false
-		if m.TMDbID > 0 && existing.TMDbID <= 0 {
+	status := strings.TrimSpace(existing.ScrapeStatus)
+	canRefreshExternalIDs := status == "pending" || status == "" || status == "no_match" ||
+		m.ScrapeStatus == "matched" || strings.HasPrefix(strings.ToLower(strings.TrimSpace(m.Path)), "cloud://")
+	if canRefreshExternalIDs {
+		changedExternalID := false
+		if m.TMDbID > 0 && existing.TMDbID != m.TMDbID {
 			updates["tm_db_id"] = m.TMDbID
-			backfilledExternalID = true
+			changedExternalID = true
 		}
-		if m.BangumiID > 0 && existing.BangumiID <= 0 {
+		if m.BangumiID > 0 && existing.BangumiID != m.BangumiID {
 			updates["bangumi_id"] = m.BangumiID
-			backfilledExternalID = true
+			changedExternalID = true
 		}
-		if m.DoubanID != "" && existing.DoubanID == "" {
+		if m.DoubanID != "" && strings.TrimSpace(existing.DoubanID) != strings.TrimSpace(m.DoubanID) {
 			updates["douban_id"] = m.DoubanID
-			backfilledExternalID = true
+			changedExternalID = true
 		}
-		if m.TheTVDBID != "" && existing.TheTVDBID == "" {
+		if m.TheTVDBID != "" && strings.TrimSpace(existing.TheTVDBID) != strings.TrimSpace(m.TheTVDBID) {
 			updates["thetvdb_id"] = m.TheTVDBID
-			backfilledExternalID = true
+			changedExternalID = true
 		}
 		if m.Year > 0 && existing.Year <= 0 {
 			updates["year"] = m.Year
 		}
-		if backfilledExternalID && existing.ScrapeStatus == "no_match" {
+		if changedExternalID && (status == "no_match" || status == "matched") && m.ScrapeStatus != "matched" {
 			updates["scrape_status"] = "pending"
 		}
 	}
@@ -456,7 +459,7 @@ func (r *MediaRepository) upsert(ctx context.Context, m *model.Media) error {
 	if lib := m.LibraryID; lib != "" && lib != existing.LibraryID {
 		updates["library_id"] = m.LibraryID
 	}
-	if m.SeasonNum > 0 && existing.SeasonNum != m.SeasonNum {
+	if (m.SeasonNum > 0 || m.EpisodeNum > 0) && existing.SeasonNum != m.SeasonNum {
 		updates["season_num"] = m.SeasonNum
 	}
 	if m.EpisodeNum > 0 && existing.EpisodeNum != m.EpisodeNum {

internal/repository/repository_test.go

@@ -72,6 +72,52 @@ func TestMediaUpsertSkipsUnchangedExistingRow(t *testing.T) {
 	}
 }
 
+func TestMediaUpsertRefreshesCloudExternalIDFromPathHint(t *testing.T) {
+	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := database.AutoMigrate(db); err != nil {
+		t.Fatalf("migrate: %v", err)
+	}
+	repos := New(db)
+	lib := model.Library{Name: "OpenList · 国产剧", Path: "cloud://openlist/国产剧", Type: "tv", Enabled: true}
+	if err := repos.Library.Create(t.Context(), &lib); err != nil {
+		t.Fatal(err)
+	}
+	path := "cloud://openlist/国产剧/折腰 (2025) {tmdb-296753}/Season 1/折腰.S01E01.mkv"
+	existing := model.Media{
+		LibraryID:    lib.ID,
+		Title:        "折腰",
+		Path:         path,
+		SeasonNum:    1,
+		EpisodeNum:   1,
+		TMDbID:       220269,
+		ScrapeStatus: "matched",
+	}
+	if err := repos.Media.Upsert(t.Context(), &existing); err != nil {
+		t.Fatal(err)
+	}
+	next := model.Media{
+		LibraryID:  lib.ID,
+		Title:      "折腰",
+		Path:       path,
+		SeasonNum:  1,
+		EpisodeNum: 1,
+		TMDbID:     296753,
+	}
+	if err := repos.Media.Upsert(t.Context(), &next); err != nil {
+		t.Fatal(err)
+	}
+	var got model.Media
+	if err := repos.DB.Where("path = ?", path).First(&got).Error; err != nil {
+		t.Fatal(err)
+	}
+	if got.TMDbID != 296753 || got.ScrapeStatus != "pending" {
+		t.Fatalf("cloud path hint should refresh tmdb and retry scrape, got tmdb=%d status=%q", got.TMDbID, got.ScrapeStatus)
+	}
+}
+
 type fakeMediaSearchBackend struct {
 	ids []string
 	err error