fix: log google auth error reason; export pipeline env vars in start.sh

backend/routes/auth.py

@@ -36,6 +36,7 @@ async def auth_google(body: GoogleTokenBody):
             GOOGLE_CLIENT_ID,
         )
     except ValueError as exc:
+        print(f"[auth] Google token verification failed: {exc}", flush=True)
         raise HTTPException(status_code=401, detail=f"Invalid Google token: {exc}")
 
     google_id = idinfo["sub"]

start.sh

@@ -2,7 +2,9 @@
 set -e
 
 MODEL_PATH="/data/yolov11x_best.pt"
-SESSIONS_DIR="${SESSIONS_DIR:-/data/sessions}"
+export SESSIONS_DIR="${SESSIONS_DIR:-/data/sessions}"
+export PIPELINE_DIR="/app/pdf-script"
+export YOLO_MODEL_PATH="/data/yolov11x_best.pt"
 
 # Create sessions directory in persistent storage
 mkdir -p "$SESSIONS_DIR"