clean Temp files after download and on server start

src/server/fastapi_app.py

@@ -126,7 +126,29 @@ async def lifespan(_application: FastAPI):
     startup_error = None
     try:
         logger.info("Starting FastAPI application...")
-        
+
+        # Clean up any leftover temp download files from a previous run
+        try:
+            import shutil as _shutil
+            _temp_dir = Path(__file__).resolve().parents[2] / "Temp"
+            if _temp_dir.exists():
+                _removed = 0
+                for _item in _temp_dir.iterdir():
+                    try:
+                        if _item.is_file():
+                            _item.unlink()
+                        elif _item.is_dir():
+                            _shutil.rmtree(_item)
+                        _removed += 1
+                    except OSError as _exc:
+                        logger.warning("Could not remove temp item %s: %s", _item, _exc)
+                logger.info("Cleaned %d item(s) from Temp folder on startup", _removed)
+            else:
+                _temp_dir.mkdir(parents=True, exist_ok=True)
+                logger.debug("Created Temp folder: %s", _temp_dir)
+        except Exception as _exc:
+            logger.warning("Failed to clean Temp folder on startup: %s", _exc)
+
         # Initialize database first (required for other services)
         try:
             from src.server.database.connection import init_db