feat(logging): initialize logging on server startup

src/grist_mcp/main.py

@@ -11,6 +11,7 @@ from mcp.server.sse import SseServerTransport
 from grist_mcp.server import create_server
 from grist_mcp.config import Config, load_config
 from grist_mcp.auth import Authenticator, AuthError
+from grist_mcp.logging import setup_logging
 
 
 Scope = dict[str, Any]
@@ -195,6 +196,8 @@ def main():
     external_port = int(os.environ.get("EXTERNAL_PORT", str(port)))
     config_path = os.environ.get("CONFIG_PATH", "/app/config.yaml")
 
+    setup_logging()
+
     if not _ensure_config(config_path):
         return