Revert: roll back to the previous stable version

Subject: Improve language switching and SR robustness — add fallback & restart action

Fix language switching race condition and improve command parsing

fix(voice): reset session_id on failure, increase step limit & fix minor bugs

Merge remote-tracking branch 'origin/main'

feat: enable LLM-driven text input and home-screen search fallback

Initialize README with project description and goals

Initial commit