feat(health): improve path recovery robustness and webhook handling

internal/api/arrs_handlers.go

@@ -323,14 +323,14 @@ func (s *Server) handleArrsWebhook(c *fiber.Ctx) error {
 			var releaseDate *time.Time
 			var sourceNzb *string
 
-			// Handle Rename specifically: try to find and re-link old record
-			if req.EventType == "Rename" {
+			// Handle Rename and Download specifically: try to find and re-link old record
+			if req.EventType == "Rename" || req.EventType == "Download" {
 				fileName := filepath.Base(normalizedPath)
 				// Try to find a record with the same filename but currently under /complete/
 				// or with a NULL library_path
 				if err := s.healthRepo.RelinkFileByFilename(c.Context(), fileName, normalizedPath, path); err == nil {
-					slog.InfoContext(c.Context(), "Successfully re-linked health record during Rename webhook",
-						"filename", fileName, "new_library_path", path)
+					slog.InfoContext(c.Context(), "Successfully re-linked health record during webhook",
+						"event", req.EventType, "filename", fileName, "new_library_path", path)
 					continue // Successfully re-linked, no need to add new
 				}
 			}

internal/database/health_repository.go

@@ -1506,18 +1506,31 @@ func (r *HealthRepository) RenameHealthRecord(ctx context.Context, oldPath, newP
 	oldPath = strings.TrimPrefix(oldPath, "/")
 	newPath = strings.TrimPrefix(newPath, "/")
 
-	query := `
-		UPDATE file_health
-		SET file_path = ?,
-		    library_path = CASE 
-				WHEN library_path = ? THEN ? 
-				ELSE library_path 
-			END,
-		    updated_at = datetime('now')
-		WHERE file_path = ?
-	`
+		query := `
+
+			UPDATE file_health
+
+			SET file_path = ?,
+
+			    library_path = CASE 
 
-        _, err := r.db.ExecContext(ctx, query, newPath, oldPath, newPath, oldPath)
+					WHEN library_path IS NULL OR library_path = ? OR library_path = '/' || ? OR library_path LIKE '%' || ? THEN ? 
+
+					ELSE library_path 
+
+				END,
+
+			    updated_at = datetime('now')
+
+			WHERE file_path = ?
+
+		`
+
+
+
+		_, err := r.db.ExecContext(ctx, query, newPath, oldPath, oldPath, oldPath, newPath, oldPath)
+
+
         if err != nil {
                 return fmt.Errorf("failed to rename health record: %w", err)
         }