Fallback to TMDB when artwork cache fails (build 271261524)

.build_number

@@ -1 +1 @@
-271261335
+271261524

backend/app/routers/images.py

@@ -1,6 +1,7 @@
 import os
 import re
 import mimetypes
+import logging
 from typing import Optional
 from fastapi import APIRouter, HTTPException, Response
 from fastapi.responses import FileResponse, RedirectResponse
@@ -12,6 +13,7 @@ router = APIRouter(prefix="/images", tags=["images"])
 
 _TMDB_BASE = "https://image.tmdb.org/t/p"
 _ALLOWED_SIZES = {"w92", "w154", "w185", "w342", "w500", "w780", "original"}
+logger = logging.getLogger(__name__)
 
 
 def _safe_filename(path: str) -> str:
@@ -91,6 +93,8 @@ async def tmdb_image(path: str, size: str = "w342"):
         if os.path.exists(file_path):
             media_type = mimetypes.guess_type(file_path)[0] or "image/jpeg"
             return FileResponse(file_path, media_type=media_type, headers=headers)
-        raise HTTPException(status_code=502, detail="Image cache failed")
-    except httpx.HTTPError as exc:
-        raise HTTPException(status_code=502, detail=f"Image fetch failed: {exc}") from exc
+        logger.warning("TMDB cache miss after fetch: path=%s size=%s", path, size)
+    except (httpx.HTTPError, OSError) as exc:
+        logger.warning("TMDB cache failed: path=%s size=%s error=%s", path, size, exc)
+
+    return RedirectResponse(url=url)