feat: add STRM repair workflow

internal/handler/routes_authenticated_features.go

@@ -55,6 +55,7 @@ func registerAuthedSTRMRoutes(authed *gin.RouterGroup, svc *service.Container) {
 	authed.POST("/strm/import", middleware.AdminRequired(), importSTRMHandler(svc))
 	authed.POST("/strm/generate", middleware.AdminRequired(), generateSTRMHandler(svc))
 	authed.POST("/strm/generate-from-tree", middleware.AdminRequired(), generateSTRMFromTreeHandler(svc))
+	authed.POST("/strm/repair", middleware.AdminRequired(), repairSTRMHandler(svc))
 }
 
 func registerAuthedDuplicateRoutes(authed *gin.RouterGroup, svc *service.Container) {

internal/handler/strm.go

@@ -123,6 +123,12 @@ type generateSTRMTreeReq struct {
 	TransferSubtitles bool     `json:"transfer_subtitles"`
 }
 
+type repairSTRMReq struct {
+	OutputDir string `json:"output_dir" binding:"required"`
+	BaseURL   string `json:"base_url"`
+	DryRun    bool   `json:"dry_run"`
+}
+
 func generateSTRMHandler(svc *service.Container) gin.HandlerFunc {
 	return func(c *gin.Context) {
 		var req generateSTRMReq
@@ -204,6 +210,34 @@ func generateSTRMFromTreeHandler(svc *service.Container) gin.HandlerFunc {
 	}
 }
 
+func repairSTRMHandler(svc *service.Container) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		var req repairSTRMReq
+		if err := c.ShouldBindJSON(&req); err != nil {
+			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+			return
+		}
+		strmSvc := svc.STRM
+		if strmSvc == nil {
+			strmSvc = service.NewSTRMService(svc.Log, svc.Repo, svc.Cfg)
+		}
+		baseURL := strings.TrimRight(strings.TrimSpace(req.BaseURL), "/")
+		if baseURL == "" {
+			baseURL = strings.TrimRight(absoluteRequestURL(c, "/"), "/")
+		}
+		res, err := strmSvc.RepairFiles(c.Request.Context(), service.RepairSTRMOptions{
+			OutputDir: req.OutputDir,
+			BaseURL:   baseURL,
+			DryRun:    req.DryRun,
+		})
+		if err != nil {
+			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+			return
+		}
+		c.JSON(http.StatusOK, res)
+	}
+}
+
 func strmPlaybackTokenForRequest(c *gin.Context, svc *service.Container) string {
 	if svc == nil || svc.Auth == nil || svc.Repo == nil || svc.Repo.User == nil {
 		return ""