Fix worker crash: remove broken gunicorn post_fork hook

Co-authored-by: Cursor <cursoragent@cursor.com>

init_db.py

@@ -1,3 +1,10 @@
-from app import create_app
+import sys
 
-create_app(setup_database=True)
+try:
+    from app import create_app
+
+    create_app(setup_database=True)
+    print("Database init OK", flush=True)
+except Exception as exc:
+    print(f"Database init FAILED: {exc}", file=sys.stderr, flush=True)
+    raise