- Split partials/chat.html (1513→70 lines) into 8 JS modules:
chat-state.js, chat-switchers.js, chat-mentions.js,
chat-messages.js, chat-suggestions.js, chat-theme.js,
chat-websocket.js, chat-init.js
- Centralized state in ChatState global object
- Switcher chips auto-activate on switch_context suggestion action
- active_switchers sent in every WS message payload
- Removed old chat-main.js (merged into modules)
- Split vibe.html into vibe/ module directory with CSS extraction
- Updated standalone chat/chat.html to use same modules
