- Refactor store to persist raw user intent (chatWidth/chatHeight/isExpanded) with no clamp logic
- Add ResizeObserver-based resize hook for dynamic container tracking
- Add drag-to-resize handles (left, top, corner) with pointer capture
- Expand/Restore button uses visual state (isAtMax) not internal flag
- Open/close animation (scale + opacity from bottom-right)
- Resize animation on button click, instant on drag (isDragging gate)
- Move ChatWindow inside content area (absolute, not fixed)
- Add input draft persistence, remove agent prop from message list
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Move chat queries, mutations, and store from apps/web/core/chat/ and
apps/web/features/chat/store.ts to packages/core/chat/. Refactor store
to use createChatStore({ storage }) factory pattern (mirrors auth store)
so it works in both web (localStorage) and desktop (Electron) without
direct browser API access. Register chat store in CoreProvider.initCore.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
