- Read/write ~/.claude.json (preserve unknown fields) for mcpServers
- Remove settings.local.json and mcp.json handling
- Drop enableAllProjectMcpServers command and UI toggle
- Update types, Tauri APIs, and MCP panel to reflect new status fields
- Keep atomic write and command validation behaviors
- Add McpPanel with enable toggle, server list and add/edit form
- Quick template: mcp-fetch (uvx mcp-server-fetch)
- Command validation UI and open ~/.claude shortcut
- Wire MCP button in App to open panel