update

CLAUDE.md

@@ -6,8 +6,8 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 **Phase 1 is scaffolded.** An `electron-vite` + React 18 + TypeScript app now lives at the repo root (`src/main`, `src/preload`, `src/renderer`). The prototype has been ported faithfully and renders against the **mock data** — full UI, git panel, four diff modes + Split, search, and the *simulated* terminals are all working. JetBrains Mono is bundled locally via `@fontsource/jetbrains-mono`; Prism is wired with the correct `markup-templating`→`php` load order; the renderer↔main clipboard bridge is in place (`src/preload/index.ts`).
 
-**Phase 2 (real integrations) — essentially complete.** All over IPC through the preload bridge (`src/preload/index.ts`):
-- **Filesystem** — tree, in-memory content index, `chokidar` watch (`src/main/fs-service.ts`).
+**Phase 2 (real integrations) — complete; DESIGN.md fully implemented.** The app is feature-complete against the functional spec (the only intentional exception is the separate Go-to-File overlay — `⌘P` aliases the unified search instead, per the resolved decision). Editor is writable (save · autosave · dirty tabs · discard); session restore brings back open tabs/active/view modes; close-dirty prompts Save/Don't-Save/Cancel. There's a vitest suite (`npm test`, 51 tests) + ESLint + electron-builder packaging. All over IPC through the preload bridge (`src/preload/index.ts`):
+- **Filesystem** — tree + in-memory content index, `chokidar` watch (`src/main/fs-service.ts`). The tree/index/search share one source of truth: `rg --files` (honors gitignore + `files.exclude`, includes dotfiles), with a recursive-walk fallback when ripgrep is unavailable.
 - **Git** — `simple-git`: status→A/M/D/R, the four diff views from HEAD-vs-worktree pairs, stage/unstage/commit/discard (`src/main/git-service.ts`).
 - **Terminals** — real PTYs via `node-pty` (`src/main/pty-service.ts`) rendered with `@xterm/xterm` (`src/renderer/src/terminals.tsx`). Agent pane is a shell that auto-launches `claude`; bottom pane is a plain shell. Pass-on-to-Agent writes bracketed paste (`\x1b[200~ … \x1b[201~`) to the agent PTY. node-pty is native — `npm run rebuild` (also a `postinstall`) rebuilds it for Electron; it's N-API so the binary is portable.
 
@@ -45,6 +45,7 @@ A dark-only (no light mode, no theme toggle) Electron desktop code workbench for
 
 - **Renderer never touches the filesystem, git, or PTYs directly.** All FS (`fs` + `chokidar`), git (`git` / `simple-git`), search (`rg` + fuzzy), terminals (`node-pty` + `xterm.js`), and clipboard go through the main process via IPC / the preload bridge. The prototype keeps all state in the top `App` component; in the real app, lift FS/git/terminal state into main and stream over IPC.
 - **Prism PHP load order:** `prism-php` requires `prism-markup-templating` to be loaded **first**, or every `Prism.highlight` call throws and silently falls back to plain text.
+- **Preload must be CommonJS `index.cjs`** and `main` must load `../preload/index.cjs` (see `electron.vite.config.ts` preload `rollupOptions.output`). If they mismatch (or you let it build as `.mjs`), Electron silently loads no preload, `window.helder` is undefined, and the renderer silently falls back to mock data + the "terminal not available" message. Keep the filename and the `main` path in sync.
 - **Pass on to Agent uses bracketed paste.** Write inserts to the agent PTY wrapped in `\x1b[200~ … \x1b[201~` so the `claude` CLI treats it as *pasted, unsubmitted* input. Insert must never submit — it lands as a new line so the user can stack several references before sending.
 - **The four diff view modes (Original / Updated / Diff / Split) all derive from one original-text + updated-text pair per changed file.** The prototype computes this with an LCS line diff (`buildDiff()` in `design/src/data.js`); production should prefer real `git diff` output but keep the same four derived views and the same color language everywhere: **red = removed/changed-from, green = added/changed-to**, syntax highlighting on in all modes.
 - **The agent pane is just a terminal running the `claude` CLI** (`ai.command`, default `claude`, auto-launched when `ai.autoLaunch` is on). The bottom pane is a normal shell PTY. The prototype's simulated agent session (`agentSeed`, `runAgent`, `bootAgent` in `terminals.jsx`) exists only to show the visual style — keep the styling, drop the fakery.
@@ -92,5 +93,8 @@ Canonical source is the `:root` block in `design_handoff_helder_workbench/design
 - `npm run build` — type-stripped production build into `out/` (`electron-vite build`). A frontend change is not done until this succeeds.
 - `npm run preview` / `npm start` — run the built app (`electron-vite preview`).
 - `npm run typecheck` — `tsc --noEmit` over the renderer (`tsconfig.web.json`) and main/preload (`tsconfig.node.json`). The build itself uses esbuild and does NOT type-check, so run this separately to catch type errors.
+- `npm test` — vitest suite in `test/` (pure logic + node-side services: diff, fuzzy, highlight, config, fs, git). `npm run test:watch` for watch mode.
+- `npm run lint` — ESLint (flat config in `eslint.config.js`). `.prettierrc.json` defines formatting (not auto-applied).
+- `npm run pack` — unpacked app into `dist/` (electron-builder, unsigned). `npm run dist` / `dist:mac` for distributables. App icon comes from `build/icon.png`. Native `node-pty` + `rg` are asar-unpacked so they load when packaged.
 
-No test/lint runner is wired up yet — add and document them here when introduced.
+Keep all five green (typecheck · lint · test · build, and pack when touching main/packaging) when changing code.