- 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
