likecode v1.0.2-likecode

Initial public likecode release.\n\nHighlights:\n- routed model aliases and custom modelRoutes\n- /mmodel lightweight multi-agent orchestration\n- welcome dashboard, HUD, rewind overlay, and background task improvements\n- packaged Linux x64 binary included\n\nAssets:\n- likecode-linux-x64: direct executable\n- likecode-linux-x64.tar.gz: compressed archive\n- sha256sums.txt: checksum file