# Dev Tools

- **Click-to-source:** `Ctrl+Shift+Cmd+C` toggles inspector. Custom Vite plugin in `src/vite.ts` injects `data-inspector-*` attributes; reads original source from disk for accurate line numbers.
- **HMR:** Vite 8 + `@vitejs/plugin-react` v6. `dedupeRefreshPlugin` in `src/vite.ts` prevents double React Refresh injection.
- **Editor:** Set `REACT_EDITOR` env var. `zed`/`subl` use `file:line:col`; others get `--goto file:line:col`.
- **Playwright MCP:** `bun run mcp:playwright` starts headless browser MCP server (config in `.qwen/settings.json`).