v0.6.5

Changed:
Added UI Lab label tooling, including label metadata support and a label editor UI.
Updated addon manager/store handling for the new UI Lab label workflow.
Improved bubble transcript, chat rendering, and text annotation handling.
Updated website/docs/packaging metadata for the 0.6.5 release.
Added regression coverage for UI crash recovery, Linux intent overlay key handling, macOS Quartz avoidance, and UI boundary rules.
Fixed:
Linux portable builds could crash when toggling context chips in the intent overlay because the UI process started a fragile native pynput keyboard listener.
Unexpected UI worker crashes now trigger a UI worker restart instead of bringing down all of Wisp.
Snip overlay delayed focus/grab logic no longer runs after the overlay is closed.
macOS Snip App-region preselect no longer imports Quartz inside the UI worker by default, reducing native UI-process crash risk.
CUDA/GPU TTS installation no longer fails quietly when the CUDA path cannot be installed correctly.