v0.6.6

Changed:
Added repo/dev updater path from Settings.
Added Linux packaged update progress/failure UI.
Streamed TTS playback in chunks so fast-forward affects spoken audio.
Ignored native hotkeys while Settings is open.
Added pip recovery wrapper for broken package metadata.
Pinned shared AI/runtime/build dependencies more tightly.
Fixed:
Repo/dev update button trying to apply packaged release artifacts.
Silent/unclear Linux portable update installs.
TTS audio not respecting chat fast-forward.
Hotkey remapping triggering intent flow while recording.
Broken pip installs from missing RECORD metadata.
Dependency install failures from unavailable/floating pins like tokenizers, CUDA torch, and mismatched setuptools.