Add --base-url flag to serve command for correct feed links

src/cli.py

@@ -305,11 +305,12 @@ def cmd_serve(args: argparse.Namespace, db_path: str) -> None:
     """Start the HTTP server."""
     host = args.host or DEFAULT_SERVER_HOST
     port = args.port or DEFAULT_SERVER_PORT
+    base_url = getattr(args, 'base_url', None)
 
     from src.server import create_handler
     from http.server import ThreadingHTTPServer
 
-    handler = create_handler(db_path)
+    handler = create_handler(db_path, base_url)
     try:
         server = ThreadingHTTPServer((host, port), handler)
     except OSError as e:
@@ -364,6 +365,7 @@ def build_parser() -> argparse.ArgumentParser:
     p_serve = subparsers.add_parser("serve", help="Start HTTP server")
     p_serve.add_argument("--port", type=int, default=DEFAULT_SERVER_PORT, help="Server port")
     p_serve.add_argument("--host", default=DEFAULT_SERVER_HOST, help="Server host")
+    p_serve.add_argument("--base-url", default=None, help="Base URL for feed links (e.g., http://192.168.1.100:8080)")
 
     # daemon
     p_daemon = subparsers.add_parser("daemon", help="Run as background daemon")