NetCat v0.3.0

NetCat 0.3.0\n\nChanges:\n- embedded Telegram WS proxy / local SOCKS mode\n- cleaner GUI update flow and packaged release manifest\n- fixed updater packaging and self-update smoke coverage\n- reduced runtime config/log noise and cleaned release artifacts\n- quick-rules file locking fix\n\nAssets:\n- NetCat-v0.3.0.zip\n- NetCat-v0.3.0.zip.sha256