fix: use asyncio.run() in entrypoint for Python 3.12 compatibility

worker/src/entrypoint.sh

@@ -9,15 +9,13 @@ echo "[entrypoint] Waiting for database to be ready..."
 
 # Wait for PostgreSQL to accept connections (max 30s retries)
 for i in $(seq 1 30); do
-    if python -c "import asyncpg,os; asyncio.get_event_loop().run_until_complete(
-        asyncpg.connect(
+    if python -c "import asyncpg,os,asyncio; asyncio.run(asyncpg.connect(
         host=os.getenv('POSTGRES_HOST','db'),
         port=int(os.getenv('POSTGRES_PORT','5432')),
         user=os.getenv('POSTGRES_USER','postgres'),
         password=os.getenv('POSTGRES_PASSWORD'),
         database=os.getenv('POSTGRES_DB','postgres'),
-        )
-    )" 2>/dev/null; then
+    ))" 2>/dev/null; then
         echo "[entrypoint] Database is ready."
         break
     fi