- Detect pastes >150 chars or >3 lines
- Convert long pastes to text attachments
- Show clipboard icon for text attachments
- Display summary (e.g., 'pasted #1 (10 lines)')
- Auto-increment paste counter
- Reset counter on message send
- Short pastes insert normally
- Add required 'url' field to file parts in API request
- Use url, mime, filename instead of path field
- Prevent duplicate attachments by checking if path already exists
- Show all files when picker opens with empty query (use space as query)
- Filter git files only when search query provided
- Enter key now works correctly when file list has items
- Insert @filename directly into textarea value when file selected
- Remove separate chip display above textarea
- Text now flows naturally: 'look at this file @app.tsx and tell me'
- Clear all ignored positions when @ is deleted (reset state)
- Show attachment count in hints when files attached
- Attachments tracked separately but appear as text to user
- Auto-resize textarea after inserting filename
- Clear ignored @ position when user moves away from it
- Track when @ position changes and remove old position from ignored set
- Allows file picker to work again on new @ mentions
- Example: @app (Escape) → @file (picker opens for new @)
- Move attachment chips inside textarea wrapper (appears inline)
- Keep textarea focused when pressing Escape (no focus stealing)
- Track ignored @ positions after Escape to prevent re-triggering picker
- Clear ignored positions on message send
- Use capture phase for Escape key handling (true flag on addEventListener)
- Escape now works like email: type @example.com naturally after dismissing picker
- Chips show above textarea input with better spacing (pt-2 pb-1)
- Change from modal dialog to inline popover (no focus stealing)
- Keep textarea focused while file picker is open
- Fix loading flickering by caching git files
- Debounce file search to prevent rapid refetching
- Escape closes picker without removing @ text
- Enter selects file from picker
- Arrow keys navigate picker when open, history when closed
- Position picker above textarea using absolute positioning
- Mouse hover updates selection index
- Remove blur/focus from picker input
- Create attachment type system with file, text, symbol, and agent sources
- Implement file picker with SDK integration (find.files, file.status)
- Add @ detection in prompt input to trigger file search
- Create attachment chips UI for managing attached files
- Add attachment state management per session
- Update message submission to include attachments
- Implement drag & drop support for adding files
- Show git-modified files first in file picker with +/- indicators
- Filter files as user types after @
- Clear attachments after successful message send
- Implement automatic agent/model selection for new sessions (first agent, prioritize Anthropic default)
- Extract and restore agent/model from last assistant message when resuming sessions
- Add subagent support: child sessions can select subagents, parent sessions cannot
- Display subagent badge in agent dropdown for identification
- Truncate agent descriptions to 50 characters in dropdown
- Improve model search to include full provider/model ID path
- Auto-select input text on focus for easy model search
- Add getDefaultModel() with priority: agent model → Anthropic → first provider
- Implement tool-specific rendering for all 14 tool types (read, edit, write, bash, webfetch, todowrite, task, etc.)
- Each tool shows contextually relevant information (file previews, diffs, command output, todo lists)
- Add metadata-driven content display using preview, diff, output, and todos from tool state
- Implement status-based rendering (pending, running, completed, error) with animations
- Create global state store for expandable items (tool calls and reasoning sections)
- Fix state persistence: expanded tool calls and reasoning sections remain expanded when new messages arrive
- Fix scroll position preservation during live message updates
- Fix reasoning toggle loop by replacing native details element with custom expandable
- Add comprehensive documentation in TOOL_CALL_IMPLEMENTATION.md
- Reduce font sizes for better readability in expanded tool content
- Add proper keying to For loops to prevent component recreation
- Match TUI patterns for tool names, actions, and content formatting
