v0.6.7

Changed:
Added tracked default addon_data for MCP Bridge and UI Lab.
Moved addon settings into per-addon addon_data settings files, with legacy addons.json fallback.
Improved optional TTS installer terminal launching on Linux/macOS.
Persisted optional TTS installer status across Settings reopen.
Hardened Linux Super/Hyper hotkey capture.
Updated website/docs/i18n release copy and bumped version to 0.6.7.
Fixed:
Kokoro installs no longer look healthy after reopen if runtime/Torch verification failed.
Linux terminal installer fallback when the first emulator exits immediately.
Linux Super+Shift+S capture crash in Settings.
CI workflow test was updated for the release branch behavior.