Update app.py

app.py

@@ -39,9 +39,13 @@ HF_REPO_TYPE = "dataset"
 TOTAL_DIVISIONS = 25
 VALID_DIVISIONS = set(range(1, TOTAL_DIVISIONS + 1))
 
-# Local Temporary Storage (Fixed to use local dir to avoid permission issues)
-TEMP_DIR = os.path.abspath("temp_downloads")
-os.makedirs(TEMP_DIR, exist_ok=True)
+# Local Temporary Storage (Use system /tmp which is writable)
+TEMP_DIR = "/tmp/fundata_downloads"
+try:
+    os.makedirs(TEMP_DIR, exist_ok=True)
+except OSError:
+    # Fallback to python's temp dir if /tmp/fundata_downloads fails
+    TEMP_DIR = tempfile.mkdtemp()
 
 # ==================================================
 # ADMIN AUTH
@@ -289,7 +293,7 @@ async def get_asset_urls(base_url: str, guids: list) -> dict:
     return (await post_json("webasseturls", base_url, payload)).get("items", {})
 
 async def download_to_temp(url: str, filename: str) -> str:
-    # Use the explicitly created local temp directory
+    # Use the explicitly created safe temp directory
     path = os.path.join(TEMP_DIR, filename)
     
     # Remove if exists to ensure clean slate