Vault password prompt is now the first thing shown when opening
uncloseai. No chat, no greeting, no data written until the user
creates or unlocks their vault. Each site has its own vault with
AES-256 encryption using password + device-specific salt.
- Add vault gate overlay blocking modal until password entered
- Remove plaintext conversation fallback from storage.js
- Route TTS mode, selected voice, language through vault
- Route custom API config reads through vault in models.js
- Add vault gate i18n strings (26 languages) explaining per-site
encryption of chat history, API keys, and settings
- Add missing keys to migration (voice, TTS mode)
- Re-show vault gate on lock from settings
- Permacomputer headers across all source files
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
