feat(renderer): StatusBar reads from editor store (word count, cursor pos)

feat(renderer): wire EditorPane into AppShell
feat(renderer): EditorPane with empty state and CodeMirror rendering
2026-08-02 18:10:18 +05:30 · 2026-06-05 12:49:16 +05:30 · 2026-06-05 12:46:13 +05:30 · 2026-06-05 12:42:25 +05:30 · 2026-06-05 12:38:09 +05:30 · 2026-06-05 12:25:31 +05:30
133 changed files with 22014 additions and 17210 deletions
@@ -1,103 +0,0 @@
-# CLAUDE.md — MarkdownConverter (master)
-
-> General code-quality, JavaScript, git, security, and testing standards are in the **global CLAUDE.md**. This file holds project- and branch-specific notes.
-
-## Project Overview
-
-Electron desktop app for Markdown editing and universal file conversion powered by Pandoc. Cross-platform (Win/macOS/Linux). Features: multi-tab editor with live preview, 25+ themes, PDF viewer/editor (merge/split/compress/rotate/watermark/password), export to 20+ formats (PDF/DOCX/ODT/EPUB/HTML/LaTeX/RTF/PPTX), batch conversion, syntax highlighting, diagram support (Mermaid), Git integration, and a plugin system.
-
- **Version:** 4.4.3
- **License:** MIT
- **App ID:** `com.concreteinfo.markdownconverter`
-
-## Branch Specifics
-
-This is the **primary/release branch** — a vanilla JavaScript Electron app with no bundler or framework in the renderer. The renderer is a single large `renderer.js` (5,300+ lines) loaded directly via `src/index.html`. All UI is hand-rolled DOM manipulation.
-
-## Architecture
-
-### Main Process (`src/main.js` — 4,260 lines)
-Monolithic main process file. Contains all IPC handlers, Pandoc invocation, file operations, menu definitions (600+ lines), and window lifecycle. Key modules extracted:
- `src/main/PDFOperations.js` — PDF manipulation via `pdf-lib` (merge, split, compress, rotate, delete, reorder, watermark, encrypt, decrypt, permissions)
- `src/main/GitOperations.js` — Git status/stage/commit/log via `simple-git`
-
-### Renderer (`src/renderer.js` — 5,361 lines)
-Vanilla JS, no framework. Directly manipulates DOM. Loads CodeMirror 6 via `src/editor/codemirror-setup.js`. Uses `marked` + `highlight.js` + `DOMPurify` + `mermaid` for rendering. Lazy-loads sidebar panels, REPL, command palette, zen mode.
-
-### Preload (`src/preload.js` — 448 lines)
-Exists as IPC bridge, but **`contextIsolation: false` and `nodeIntegration: true`** — the renderer has full Node access. Preload is effectively a thin passthrough.
-
-### Security Model
- `contextIsolation: false` + `nodeIntegration: true` (legacy; the react-electron branch fixes this)
- Pandoc invoked via `execFile` (not `exec`) to prevent shell injection
- Path traversal protection: `validatePath()`, `resolveWritablePath()`, blocks sensitive system dirs
- Permission handler only allows `clipboard-read`/`clipboard-write`
- Rate limiter on conversions (2-second minimum interval)
- File size limit: 50MB
- Error message sanitization strips absolute paths
-
-### Plugin System (`src/plugins/`)
-Manifest-based discovery (`manifest.json`). Built-in `writing-studio` plugin with sprint/goal/snapshot management. Plugin API exposed via `src/plugins/plugin-api.js`.
-
-### Settings
-Custom JSON file store at `<userData>/settings.json` (NOT `electron-store` despite the dependency). Recent files at `<userData>/recent-files.json`.
-
-## System Dependencies
-
-| Dependency | Required | Notes |
-|---|---|---|
-| **Node.js** | >= 20 | Electron 41 bundles Node 20.x |
-| **Pandoc** | Yes (for exports) | Downloaded to `bin/<platform>/pandoc` via `scripts/download-tools.js` (v3.9.0.2). Falls back to system PATH. Must be present for DOCX/ODT/EPUB/LaTeX/PPTX export. |
-| **FFmpeg** | Bundled | `ffmpeg-static` npm package; `asarUnpacked` for packaged builds |
-| **MiKTeX / TeX Live** | Optional | For LaTeX PDF export; MiKTeX PATH injected on Windows automatically |
-| **ImageMagick** | Optional | Linux image conversion; listed as deb dependency |
-| **LibreOffice** | Optional | Enhanced document conversion; listed as deb dependency |
-
-## Development Commands
-
-```bash
-npm start                  # Launch Electron app (dev mode)
-npm test                   # Jest test suite
-npm test:watch             # Jest in watch mode
-npm test:coverage          # Jest with coverage report
-npm run lint               # ESLint check (src + tests)
-npm run lint:fix           # ESLint auto-fix
-npm run format             # Prettier write
-npm run format:check       # Prettier check only
-npm run download-tools     # Download Pandoc binaries to bin/
-npm run generate-icons     # Generate app icons via sharp
-```
-
-## Build & Package
-
-**Tool:** `electron-builder` (v26.0.12), config inline in `package.json` (no separate config file).
-
-| Target | Platforms |
-|---|---|
-| `npm run build` | electron-builder (default platform) |
-| `npm run build:win` | Windows: NSIS installer + portable + zip (x64) |
-| `npm run build:mac` | macOS: default dmg |
-| `npm run build:linux` | Linux: deb + AppImage + snap |
-| `npm run dist` | Build without publish |
-| `npm run dist:all` | Build for all platforms |
-
-**Bundled with builds:** Pandoc binary per platform. FFmpeg via `ffmpeg-static` (asarUnpacked). NSIS installer uses custom script at `scripts/nsis-installer.nsh`.
-
-**Output:** `dist/` directory.
-
-**CI:** GitHub Actions workflows in `.github/workflows/` (ci.yml, release.yml).
-
-## Project Conventions / Gotchas
-
- **No bundler/transpilation.** The app uses vanilla CommonJS JavaScript. `src/main.js` is loaded directly by Electron. No webpack, no Vite, no TypeScript, no Babel.
- **Monolithic files.** `main.js` (4,260 lines) and `renderer.js` (5,361 lines) contain most logic. Not ideal but is the current state of this branch.
- **CodeMirror 6** for the editor, configured in `src/editor/codemirror-setup.js`.
- **PDF rendering** uses `pdfjs-dist`; **PDF manipulation** uses `pdf-lib` in the main process.
- **Renderer security is weak** — full Node access in renderer. Do NOT introduce new privileged renderer code without understanding this.
- **Pandoc is external.** Must be installed separately or downloaded via `npm run download-tools`. HTML and built-in PDF export work without Pandoc; other formats require it.
- **PDF export fallback chain:** xelatex -> pdflatex -> lualatex -> Electron built-in `printToPDF()`.
- **ESLint flat config** (`eslint.config.js`) with ECMAScript 2022. Prettier with 2-space indent, single quotes, semicolons, 100-char width.
- **Tests:** Jest with jsdom environment, 15% coverage threshold. 24 test files in `tests/`.
- **File associations:** `.md`, `.markdown`, `.pdf` registered at install.
- **Single instance lock** enforced via `app.requestSingleInstanceLock()`.
- **Adapters layer** (`src/adapters/`) abstracts file system operations for potential future non-Electron targets.
@@ -162,4 +162,4 @@ Amit Haridas (amit.wh@gmail.com)

 ## Version

-v4.4.4
+v4.1.0
@@ -0,0 +1,20 @@
+{
+  "$schema": "https://ui.shadcn.com/schema.json",
+  "style": "new-york",
+  "rsc": false,
+  "tsx": true,
+  "tailwind": {
+    "config": "tailwind.config.js",
+    "css": "src/renderer/styles/globals.css",
+    "baseColor": "neutral",
+    "cssVariables": true,
+    "prefix": ""
+  },
+  "aliases": {
+    "components": "@/components",
+    "ui": "@/components/ui",
+    "lib": "@/lib",
+    "hooks": "@/hooks"
+  },
+  "iconLibrary": "lucide"
+}
@@ -0,0 +1,361 @@
+# MarkdownConverter — React + shadcn/ui UI Redesign
+
+**Date:** 2026-06-05
+**Status:** Design (awaiting user approval)
+**Branch:** `react-electron`
+**Author:** Brainstormed with user via superpowers:brainstorming
+
+## Summary
+
+Replace the legacy vanilla JS renderer (`src/renderer.js` is 213 KB; `src/styles.css` is 74 KB) with a modern React 19 + Vite + TypeScript + shadcn/ui renderer that achieves visual feature parity while delivering a Polished + Glassy (Raycast/Arc-style) aesthetic. The Electron main process, preload bridge, and IPC contracts stay unchanged. Work proceeds via vertical slices — each PR ships a demoable feature.
+
+## Goals
+
+1. Replace every render-time feature of the legacy renderer with an idiomatic React + shadcn/ui implementation.
+2. Adopt the "Polished + Glassy" visual language (subtle shadows, 8–12 px radii, gradient accents, gentle depth) on top of the existing ConcreteInfo brand tokens and design system.
+3. Use a single component foundation (shadcn/ui) and a single motion library (Motion / Framer Motion) to keep the dependency surface narrow and the design coherent.
+4. Keep the main process, preload, and IPC contracts untouched. The renderer is the only surface being rewritten.
+5. Keep the app runnable at every commit. No "big bang" merge.
+
+## Non-Goals
+
+- Migrating the main process to TypeScript (out of scope for this spec).
+- Adding new features the legacy renderer does not have (plugin system, AI features, etc. — those are future specs).
+- Replacing Pandoc/FFmpeg/ImageMagick orchestration.
+- Changing the packaging pipeline (electron-builder config stays).
+- Replacing the CodeMirror 6 editor — it is the right tool and is already wired up.
+
+## Decisions Locked During Brainstorming
+
+| Decision | Choice | Why |
+|---|---|---|
+| Scope | Full feature parity with legacy renderer | User-selected option. Renderer is one cohesive surface; splitting it across specs would force premature contracts. |
+| Visual style | **B — Polished + Glassy** (Raycast/Arc aesthetic) | "Fancy" comes from elevation, gradient accents, and material depth — not over-designed visuals. |
+| Layout | **2 — IDE-style** (equal editor/preview, draggable divider, collapsible sidebar) | Power-user markdown apps converge on this. Draggable divider + keyboard reset. |
+| Modal patterns | **A (Centered Dialog), B (Right Side-Sheet), D (Toasts)** | No command palette. |
+| Command palette | **No** — full menus, no ⌘K | Power users can use the OS-level launcher. App stays focused on writing. |
+| Animation | **Motion (Framer Motion)** | Best for layout transitions, modal/drawer enter/exit, drag. Sparingly used. |
+| Component library | **shadcn/ui** | Tailwind + Radix primitives, copy-paste ownership, perfect fit for the "glassy" aesthetic and the HSL-CSS-variable foundation that is already in place. |
+| Implementation strategy | **Vertical slices** — one feature end-to-end per PR | App stays runnable. Each PR is reviewable. |
+
+## Defaults (Used Unless Overridden Later)
+
+| Item | Default | Why |
+|---|---|---|
+| State management | Zustand (already in deps) + Immer for nested patches | Already in `package.json`; perfect for editor state. |
+| Theming | shadcn `next-themes`, dark default + light, system-aware | shadcn canonical pattern. Brand colors already in CSS vars. |
+| Icons | `lucide-react` (already in deps) | 1000+ tree-shakable icons. |
+| Forms | `react-hook-form` + `zod` | Standard for shadcn forms. |
+| Drag/drop (sortable lists) | `@dnd-kit/core` | De facto React drag lib (file tree reordering, plugin list reorder). |
+| Pane resize (split layout) | `react-resizable-panels` | Canonical React lib for resizable pane groups; handles drag, arrow keys, snap, persisted sizes. |
+| Testing | Vitest + RTL + Playwright (E2E + visual regression) | Standard for React + Electron. |
+| TypeScript | Strict mode (already wired) | Already in deps and `vite.renderer.config.ts`. |
+
+## Architecture
+
+The Electron app keeps its existing process model. Only the renderer is rewritten.
+
+```
+┌──────────────────────────────────────────────────────────┐
+│  Electron Main (UNCHANGED)                                │
+│  - BrowserWindow, IPC handlers, file/fs ops               │
+│  - Pandoc, FFmpeg, ImageMagick orchestration              │
+└────────────┬─────────────────────────────────────────────┘
+             │ contextBridge (UNCHANGED preload.js)
+┌────────────▼─────────────────────────────────────────────┐
+│  React Renderer (REWRITTEN)                                │
+│  ┌────────────────────────────────────────────────────┐  │
+│  │  AppShell (layout)                                  │  │
+│  │  ├─ MenuBar (native)                                │  │
+│  │  ├─ AppHeader (logo, breadcrumbs, theme toggle)     │  │
+│  │  ├─ TabBar (open files)                             │  │
+│  │  ├─ Toolbar (formatting)                            │  │
+│  │  ├─ ResizablePaneGroup (sidebar | editor | preview) │  │
+│  │  │   ├─ Sidebar (file tree, outline)                │  │
+│  │  │   ├─ EditorPane (CodeMirror 6)                   │  │
+│  │  │   └─ PreviewPane (marked + KaTeX + Mermaid)      │  │
+│  │  ├─ StatusBar (word count, encoding, cursor pos)    │  │
+│  │  └─ ModalLayer (Dialog, SideSheet, Toaster)         │  │
+│  └────────────────────────────────────────────────────┘  │
+│  ┌────────────────────────────────────────────────────┐  │
+│  │  Feature Modules (each owns UI + state slice)       │  │
+│  │  ├─ editor/    CodeMirror wrapper, syntax, themes   │  │
+│  │  ├─ preview/   markdown→html, KaTeX, Mermaid       │  │
+│  │  ├─ tabs/      open files, dirty state              │  │
+│  │  ├─ sidebar/   file tree, outline, search results   │  │
+│  │  ├─ modals/    export, settings, about, etc.        │  │
+│  │  ├─ tools/     zen, repl, ascii-gen, table-gen      │  │
+│  │  └─ export/    pdf, docx, html, image batch         │  │
+│  └────────────────────────────────────────────────────┘  │
+│  ┌────────────────────────────────────────────────────┐  │
+│  │  Shared Infrastructure                              │  │
+│  │  ├─ stores/  Zustand slices per feature             │  │
+│  │  ├─ hooks/   useFile, useEditor, useTheme, etc.     │  │
+│  │  ├─ lib/     cn, ipc, formatters, validators        │  │
+│  │  ├─ ui/      shadcn primitives: button, dialog…     │  │
+│  │  └─ types/   shared TS types                        │  │
+│  └────────────────────────────────────────────────────┘  │
+└──────────────────────────────────────────────────────────┘
+```
+
+### Architectural Rules
+
+- **Shell components** (`AppHeader`, `TabBar`, `StatusBar`) subscribe only to `useAppStore`.
+- **Feature components** subscribe to their own feature's store.
+- **Cross-feature access** goes through hooks, not direct store imports (e.g., `useFileTree()` wraps `useFileStore`).
+- **Feature modules are self-contained** — each owns its components, its Zustand slice, and its types. Safe to develop in parallel later.
+- **No direct `window.electronAPI` calls** from feature code. All IPC goes through `lib/ipc.ts` for type safety and error normalization.
+
+## State Management
+
+```
+stores/
+├─ useAppStore        // global UI: theme, sidebar, pane sizes, modals open
+├─ useFileStore       // file system: tree, open files, active tab
+├─ useEditorStore     // editor: per-file content, cursor, selection, dirty
+├─ usePreviewStore    // preview: scroll sync, zoom, theme
+├─ useSettingsStore   // user prefs (persisted to electron-store)
+└─ useCommandStore    // menu actions registry, recent actions
+```
+
+**Why slices instead of one mega-store?** Editor content can be megabytes. Keeping it in its own slice lets React avoid re-rendering the preview when only the editor changes — components subscribe with selectors.
+
+**Persistent state** (auto-saved to electron-store via Zustand `persist` middleware): theme, sidebar visibility, last open files, pane divider positions, settings.
+
+**Ephemeral state** (lost on quit): active modal, hover states, search query, current file content (saved to disk on idle).
+
+## Visual Design System
+
+### Color Tokens
+
+The existing `globals.css` HSL variables stay. Additions for the "glassy" aesthetic:
+
+```css
+--shadow-sm: 0 1px 2px rgba(13, 11, 9, 0.06);
+--shadow-md: 0 4px 12px rgba(13, 11, 9, 0.08), 0 0 0 1px rgba(13, 11, 9, 0.04);
+--shadow-lg: 0 12px 32px rgba(13, 11, 9, 0.12), 0 0 0 1px rgba(13, 11, 9, 0.06);
+--shadow-glow-brand: 0 0 24px rgba(229, 70, 31, 0.25);
+
+--glass-bg-light: rgba(255, 255, 255, 0.72);
+--glass-bg-dark:  rgba(13, 11, 9, 0.72);
+--glass-border-light: rgba(255, 255, 255, 0.4);
+--glass-border-dark:  rgba(255, 255, 255, 0.08);
+```
+
+### shadcn Components
+
+Install via `npx shadcn@latest add`:
+
+**Primitives** (need all of these): `button`, `dialog`, `sheet`, `popover`, `tooltip`, `select`, `dropdown-menu`, `tabs`, `separator`, `scroll-area`, `toggle`, `switch`, `slider`, `input`, `textarea`, `label`, `form`, `skeleton`, `sonner`, `command`.
+
+**Composite** (custom-built on top of primitives): `file-tree`, `pane-group`, `divider`, `status-bar`, `menu-bar`, `toast`.
+
+### Typography
+
+- Body: Plus Jakarta Sans 15 px / line-height 1.6
+- Code: JetBrains Mono 13.5 px
+- Display: Barlow Condensed 700/800 — used sparingly (page titles, big metrics)
+- Headings: Plus Jakarta Sans 600/700 with tight letter-spacing
+- Labels (`.label`): Plus Jakarta Sans 500, 12 px, uppercase, 0.05 em letter-spacing
+
+### Motion Choreography
+
+| Element | Motion | Duration | Easing |
+|---|---|---|---|
+| Modal (Dialog A) | Scale 0.96→1, opacity 0→1 | 200 ms | `ease-out` |
+| Side sheet (B) | TranslateX 100%→0, opacity 0→1 | 300 ms | `cubic-bezier(0.16, 1, 0.3, 1)` |
+| Toast | TranslateY 100%→0, opacity | 250 ms | spring(stiffness: 300, damping: 30) |
+| Sidebar toggle | Width 264 px↔72 px, content fade | 250 ms | `ease-in-out` |
+| Divider drag | Live width update | 0 ms | none (instant) |
+| Theme switch | CSS variables, opacity overlay | 300 ms | `ease-in-out` |
+| Tab switch | Underline slide | 200 ms | `ease-out` |
+| Hover (buttons) | `bg` + `shadow` shift | 150 ms | `ease-out` |
+| Focus ring | Outline grow | 100 ms | `ease-out` |
+
+**Rules:** Every motion has a purpose. No gratuitous animation. Respects `prefers-reduced-motion` (Motion handles this automatically).
+
+### Empty / Loading / Error States
+
+Every async surface ships all three. Sonner toasts for ephemeral feedback. Skeleton screens for content areas. Empty-state components with icon + message + primary CTA.
+
+## Modal/Overlay Patterns
+
+| Use case | Pattern | Why |
+|---|---|---|
+| Export (PDF/DOCX/HTML) | A — Centered Dialog | Focused decision, ~3–5 fields, "do one thing" |
+| Settings | B — Right Side-Sheet | Long form, tabbed sections, stays open while editing |
+| Find/Replace | Inline toolbar (not modal) | Always-visible utility |
+| About | A — Centered Dialog | Tiny info dump |
+| Confirm destructive (delete, close unsaved) | A — Centered Dialog | Forces attention |
+| File save error | D — Toast | Non-blocking info |
+| Pandoc/FFmpeg progress | D — Toast → sticky on >3 s | Background work feedback |
+| Plugin manager | B — Right Side-Sheet | Lists + per-item actions |
+| ASCII/Table generators | A — Centered Dialog | Tool-style focused input → output |
+| Print preview | A — Centered Dialog | Full-screen-ish modal overlay |
+| Welcome (first launch) | A — Centered Dialog | One-time onboarding |
+| Word export | A — Centered Dialog | Template selection |
+| Zen mode | Full-viewport toggle (no modal) | Replaces the editor entirely |
+| REPL | Bottom-pinned panel (split-pane) | Persistent terminal-like UI |
+| Quick file open | B — Right Side-Sheet | File tree, search, recent |
+
+### Dialog A Anatomy (Export as example)
+
+```
+┌─ Backdrop (rgba(13,11,9,0.45) + backdrop-blur 4px) ─────────┐
+│                                                            │
+│   ┌──── Modal (max-w-md, rounded-2xl, shadow-lg) ─────┐    │
+│   │ ┌── Header ────────────────────────────────────┐  │    │
+│   │ │ [Icon] Export as PDF                  [×]    │  │    │
+│   │ │ Choose format options                       │  │    │
+│   │ └─────────────────────────────────────────────┘  │    │
+│   │ ┌── Body ──────────────────────────────────────┐  │    │
+│   │ │ Format: [Letter] [A4] [Legal]                │  │    │
+│   │ │ Margins: ────●────                           │  │    │
+│   │ │ ☐ Include table of contents                  │  │    │
+│   │ │ ☐ Embed fonts                                │  │    │
+│   │ └─────────────────────────────────────────────┘  │    │
+│   │ ┌── Footer ────────────────────────────────────┐  │    │
+│   │ │                       [Cancel] [Export →]    │  │    │
+│   │ └─────────────────────────────────────────────┘  │    │
+│   └──────────────────────────────────────────────────┘    │
+│                                                            │
+└────────────────────────────────────────────────────────────┘
+```
+
+### Side-Sheet B Anatomy (Settings as example)
+
+Slides in from right, ~50 % width (max 560 px). Backdrop is `rgba(13,11,9,0.2)` with `backdrop-blur(2 px)` (lighter than dialog — the sheet is the focus). Tab navigation in the sheet header (Editor / Theme / Export / Plugins / About).
+
+### Toast D Anatomy (Sonner)
+
+Stacked bottom-right, max 3 visible. Glass background. Color-coded 3 px left border — success `#1a7a56`, error `#ef4444`, info `#0ea5e9`, warning `#eab308`. Icon + title + description. Optional action button. Auto-dismiss 4 s for success, sticky for error.
+
+## Data Flow (Editor → Preview Pipeline)
+
+```
+User types
+  ↓
+CodeMirror onChange
+  ↓
+useEditorStore.updateContent(tabId, content)  ← debounced 50 ms
+  ↓
+┌─ Persist to electron-store on idle (1 s) ─┐
+│                                            │
+└─ Publish to usePreviewStore (subscribed) ─┘
+  ↓
+marked(content) → sanitized HTML
+  ↓
+PreviewPane renders HTML
+  KaTeX post-processes $...$
+  Mermaid post-processes ```mermaid
+  Highlight.js post-processes ```lang
+  ↓
+useEffect: scroll-sync editor cursor → preview position
+```
+
+**Bidirectional scroll sync:** editor scroll → preview (primary), preview click → editor cursor (secondary). Throttled to 60 fps via `requestAnimationFrame`.
+
+## IPC Contract
+
+The preload bridge stays unchanged. A new `src/renderer/lib/ipc.ts` wraps every channel with TypeScript types and normalizes errors to a discriminated union:
+
+```ts
+type IpcResult<T> =
+  | { ok: true; data: T }
+  | { ok: false; error: { code: string; message: string } };
+
+export const ipc = {
+  file: {
+    open: (): Promise<IpcResult<FileResult>>,
+    read: (path: string): Promise<IpcResult<string>>,
+    write: (path: string, content: string): Promise<IpcResult<void>>,
+    list: (dir: string): Promise<IpcResult<FileEntry[]>>,
+    onChange: (cb: (path: string) => void) => () => void,
+  },
+  export: {
+    pdf: (opts: PdfOptions): Promise<IpcResult<ExportResult>>,
+    docx: (opts: DocxOptions): Promise<IpcResult<ExportResult>>,
+    html: (opts: HtmlOptions): Promise<IpcResult<ExportResult>>,
+    batch: (items: BatchItem[], opts: BatchOptions): Promise<IpcResult<BatchResult>>,
+  },
+  app: {
+    getVersion: (): Promise<IpcResult<string>>,
+    openExternal: (url: string): Promise<IpcResult<void>>,
+    showItemInFolder: (path: string): Promise<IpcResult<void>>,
+  },
+};
+```
+
+## Error Handling
+
+Layered defense — no single failure can crash the app:
+
+1. **IPC errors** → caught in `lib/ipc.ts` wrapper, returned as `IpcResult<T>` discriminated union. Components show toast on error.
+2. **Component errors** → React error boundary per feature area (one for editor, one for preview, one for modals). On error: show inline error UI with "Reload this panel" + "Copy details" actions.
+3. **Async operations** (export, file ops) → loading state on button + toast on completion. Long ops (>2 s) get a sticky toast with cancel.
+4. **Validation errors** (settings, export options) → inline form errors via `react-hook-form` + `zod`. shadcn `Form` component for consistent error display.
+5. **Pandoc/FFmpeg missing** → detected at startup, banner + disable export menu items. Don't surprise-fail at export time.
+
+## Testing Strategy
+
+- **Unit (Vitest):** stores, hooks, lib utilities, formatters, validators
+- **Component (Vitest + RTL):** shadcn wrappers, dialog interactions, sidebar toggle, divider drag, theme toggle
+- **Integration (Vitest + RTL):** editor ↔ preview flow, file open → tab add → content display, settings change persists
+- **E2E (Playwright):** app launches, file opens, markdown renders, export to PDF works
+- **Visual regression (Playwright snapshots):** locked-in screenshots for header, sidebar, dialogs, toasts — catch accidental style drift
+- **Target coverage:** stores/hooks/lib ≥ 90 %, components ≥ 75 %, E2E covers all critical paths
+
+## Accessibility (WCAG 2.1 AA)
+
+Baked in via shadcn + Radix:
+
+- All dialogs focus-trap, Esc to close, return focus to trigger
+- All interactive elements keyboard-reachable
+- Visible focus rings (2 px brand ring)
+- 4.5:1 contrast minimum (already met by brand colors)
+- `aria-label` on icon buttons, `role="alert"` on toasts
+- Respects `prefers-reduced-motion` (Motion handles this automatically)
+
+## Implementation Phases (Vertical Slices)
+
+Each phase is a shippable PR that keeps the app runnable. The legacy `renderer.js` is gradually replaced; until each phase is complete, the old renderer code still runs the missing parts.
+
+| # | Phase | Output | Acceptance |
+|---|---|---|---|
+| 1 | **Foundation** | shadcn installed; `next-themes`, `motion`, `react-hook-form`, `zod`, `@dnd-kit/core`, `react-resizable-panels`, `sonner` installed; design tokens finalized; `lib/utils.ts` (`cn`), `lib/ipc.ts` typed wrappers, `lib/motion.ts` preset transitions, `App.tsx` shell skeleton renders | `npm run build` succeeds; dev server shows the new shell with theme toggle working |
+| 2 | **App shell + layout** | `AppHeader`, `TabBar`, `Toolbar`, `Breadcrumb`, `StatusBar`, `ResizablePaneGroup` with sidebar toggle and draggable divider. Empty editor/preview panes. | Resize divider with mouse and arrow keys; sidebar collapses; pane sizes persist. |
+| 3 | **Editor pane** | CodeMirror 6 wrapped, dark/light themes wired to shadcn theme, syntax highlighting, line numbers, search, autocomplete | Open `.md` file → renders in editor; can edit and save. |
+| 4 | **Preview pane** | marked + DOMPurify + KaTeX + Mermaid + highlight.js. Bidirectional scroll sync with editor. | Open file → preview renders, follows cursor. |
+| 5 | **File tree + tabs** | Sidebar file tree (read directory on demand, lazy-expand children only on click). Tabs for open files. Dirty state indicator. File content is read from disk only when the tab is activated. | Open folder → root populates; click folder → children load; click file → opens in tab; close tab reverts dirty. |
+| 6 | **Native menus + toolbar** | Replace the legacy `CommandPalette` with full menus (File / Edit / View / Insert / Format / Tools / Help) bound to keyboard shortcuts. Toolbar buttons. | All menu items invoke the right action; shortcuts work; toolbar reflects active state. |
+| 7 | **Modals** | Export dialog (PDF/DOCX/HTML/batch), Settings side-sheet (Editor/Theme/Export/Plugins/About tabs), About dialog, Confirm-destructive dialog | All dialogs and sheet render with proper motion; settings persist; export works end-to-end. |
+| 8 | **Toasts** | Sonner wired into all async operations (save, export, errors, tool missing) | All operations give appropriate feedback; no silent failures. |
+| 9 | **Advanced tools** | Zen mode (full-viewport toggle), REPL (bottom-pinned panel), ASCII generator, Table generator, Word export template picker, Print preview | Each tool is feature-complete vs. legacy version. |
+| 10 | **Polish + delete legacy** | Visual regression snapshots locked; remove `renderer.js` and old `styles*.css` references from build; `npm run build:linux` produces a working installer | Final PR ships an installer with no legacy code paths. |
+
+## Risks and Mitigations
+
+| Risk | Mitigation |
+|---|---|
+| shadcn CLI requires Vite (not vanilla Electron renderer) | Vite is already configured for the renderer in `vite.renderer.config.ts`; the CLI works against the same project. |
+| shadcn CLI assumes Tailwind is at project root; we have it in renderer/ only | Point the CLI at `src/renderer/components.json` and set `tailwind.css` to the right path. |
+| Marked + KaTeX + Mermaid + highlight.js together is heavy | Lazy-load Mermaid (only when `mermaid` code block encountered). KaTeX is loaded once, cached. |
+| Editor content state can be megabytes → re-render storms | Editor content lives in its own slice; preview subscribes to a derived/cached HTML string; components use `useShallow` / selector subscriptions. |
+| Bidirectional scroll sync loops | `useEffect` debounce + ignore if cursor/selection is the sync source. |
+| CodeMirror 6 doesn't ship a Tailwind theme by default | Use `@codemirror/theme-one-dark` for dark; build a custom theme that pulls from CSS variables for light. |
+| The legacy `renderer.js` and `styles*.css` are referenced from `index.html` (now `src/renderer/index.html`) | Phase 10 deletes the references; until then, both run side-by-side and the new React app sits in a known root div. |
+| Electron `nodeIntegration` is off; we use contextBridge | Already the case. Document the contract clearly in `lib/ipc.ts`. |
+
+## Open Questions (to confirm before implementation)
+
+None. All major decisions are locked. Defaults will be used unless the user overrides them when reviewing the implementation plan.
+
+## References
+
+- `src/renderer.js` (213 KB) — legacy renderer being replaced
+- `src/styles.css` (74 KB), `src/styles-modern.css` (71 KB), `src/styles-concreteinfo.css` (21 KB) — legacy styles being replaced
+- `src/renderer/styles/globals.css` — already shadcn-compatible (HSL CSS variables)
+- `src/renderer/App.tsx` — empty skeleton that references components we will build
+- `tailwind.config.js` — brand colors and fonts already defined
+- `vite.renderer.config.ts` — Vite + React plugin already configured
+- `package.json` — CodeMirror 6, TanStack Table, lucide-react, cva, clsx, tailwind-merge, tailwindcss-animate already installed
@@ -1,6 +1,6 @@
 {
  "name": "markdown-converter",
-  "version": "4.4.4",
+  "version": "4.4.2",
  "description": "Professional Markdown editor and universal file converter with PDF editing, batch processing, and syntax highlighting",
  "main": "src/main.js",
  "scripts": {
@@ -8,6 +8,9 @@
    "test": "jest",
    "test:watch": "jest --watch",
    "test:coverage": "jest --coverage",
+    "test:renderer": "vitest run",
+    "test:renderer:watch": "vitest",
+    "test:renderer:coverage": "vitest run --coverage",
    "lint": "eslint src tests",
    "lint:fix": "eslint src tests --fix",
    "format": "prettier --write src tests",
@@ -43,7 +46,19 @@
    "url": "https://github.com/amitwh/markdown-converter"
  },
  "devDependencies": {
+    "@playwright/test": "^1.60.0",
    "@testing-library/dom": "^10.4.1",
+    "@testing-library/jest-dom": "^6.9.1",
+    "@testing-library/react": "^16.3.2",
+    "@testing-library/user-event": "^14.6.1",
+    "@types/node": "^25.9.1",
+    "@types/react": "^19.2.16",
+    "@types/react-dom": "^19.2.3",
+    "@vitejs/plugin-react": "^6.0.2",
+    "@vitest/ui": "^4.1.8",
+    "autoprefixer": "^10.5.0",
+    "class-variance-authority": "^0.7.1",
+    "clsx": "^2.1.1",
    "cross-env": "^10.0.0",
    "electron": "^41.1.1",
    "electron-builder": "^26.0.12",
@@ -52,8 +67,17 @@
    "eslint-plugin-prettier": "^5.5.4",
    "jest": "^30.2.0",
    "jest-environment-jsdom": "^30.2.0",
+    "jsdom": "^29.1.1",
+    "lucide-react": "^1.17.0",
+    "postcss": "^8.5.15",
    "prettier": "^3.7.4",
-    "sharp": "^0.34.3"
+    "sharp": "^0.34.3",
+    "tailwind-merge": "^3.6.0",
+    "tailwindcss": "^3.4.19",
+    "tailwindcss-animate": "^1.0.7",
+    "typescript": "^6.0.3",
+    "vite": "^8.0.16",
+    "vitest": "^4.1.8"
  },
  "dependencies": {
    "@codemirror/autocomplete": "^6.20.1",
@@ -70,6 +94,12 @@
    "@codemirror/state": "^6.5.4",
    "@codemirror/theme-one-dark": "^6.1.3",
    "@codemirror/view": "^6.39.16",
+    "@dnd-kit/core": "^6.3.1",
+    "@dnd-kit/sortable": "^10.0.0",
+    "@dnd-kit/utilities": "^3.2.2",
+    "@hookform/resolvers": "^5.4.0",
+    "@radix-ui/react-slot": "^1.2.4",
+    "@tanstack/react-table": "^8.21.3",
    "codemirror": "^6.0.2",
    "core-util-is": "^1.0.3",
    "docx": "^9.6.0",
@@ -79,16 +109,26 @@
    "ffmpeg-static": "^5.3.0",
    "highlight.js": "^11.11.1",
    "html2pdf.js": "^0.14.0",
+    "immer": "^11.1.8",
    "marked": "^17.0.3",
    "marked-footnote": "^1.4.0",
    "marked-highlight": "^2.2.3",
    "mermaid": "^11.12.3",
+    "motion": "^12.40.0",
+    "next-themes": "^0.4.6",
    "pdf-lib": "^1.17.1",
    "pdfjs-dist": "^5.5.207",
    "pdfkit": "^0.17.2",
    "pizzip": "^3.2.0",
+    "react": "^19.2.7",
+    "react-dom": "^19.2.7",
+    "react-hook-form": "^7.77.0",
+    "react-resizable-panels": "^4.11.2",
    "simple-git": "^3.32.3",
-    "tslib": "^2.8.1"
+    "sonner": "^2.0.7",
+    "tslib": "^2.8.1",
+    "zod": "^4.4.3",
+    "zustand": "^5.0.14"
  },
  "overrides": {
    "jszip": "^3.10.1",
@@ -0,0 +1,6 @@
+module.exports = {
+  plugins: {
+    tailwindcss: {},
+    autoprefixer: {},
+  },
+}
@@ -12,100 +12,100 @@
 * @type {import('../types').FileSystemAdapter}
 */
 const electronFsAdapter = {
-  /**
-   * Read file content
-   * @param {string} path - File path
-   * @returns {Promise<string>} File content
-   */
-  async readFile(path) {
-    return await window.electronAPI.file.read(path);
-  },
+    /**
+     * Read file content
+     * @param {string} path - File path
+     * @returns {Promise<string>} File content
+     */
+    async readFile(path) {
+        return await window.electronAPI.file.read(path);
+    },

-  /**
-   * Write content to file
-   * @param {string} path - File path
-   * @param {string} content - File content
-   * @returns {Promise<void>}
-   */
-  async writeFile(path, content) {
-    return await window.electronAPI.file.write(path, content);
-  },
+    /**
+     * Write content to file
+     * @param {string} path - File path
+     * @param {string} content - File content
+     * @returns {Promise<void>}
+     */
+    async writeFile(path, content) {
+        return await window.electronAPI.file.write(path, content);
+    },

-  /**
-   * Delete file
-   * @param {string} path - File path
-   * @returns {Promise<void>}
-   */
-  async deleteFile(path) {
-    return await window.electronAPI.file.delete(path);
-  },
+    /**
+     * Delete file
+     * @param {string} path - File path
+     * @returns {Promise<void>}
+     */
+    async deleteFile(path) {
+        return await window.electronAPI.file.delete(path);
+    },

-  /**
-   * Ensure directory exists
-   * @param {string} path - Directory path
-   * @returns {Promise<void>}
-   */
-  async ensureDir(path) {
-    return await window.electronAPI.file.ensureDir(path);
-  },
+    /**
+     * Ensure directory exists
+     * @param {string} path - Directory path
+     * @returns {Promise<void>}
+     */
+    async ensureDir(path) {
+        return await window.electronAPI.file.ensureDir(path);
+    },

-  /**
-   * List directory contents
-   * @param {string} path - Directory path
-   * @returns {Promise<Array<import('../types').FileInfo>>}
-   */
-  async listDirectory(path) {
-    const result = await window.electronAPI.invoke('list-directory', path);
-    if (!result?.entries) {
-      return [];
+    /**
+     * List directory contents
+     * @param {string} path - Directory path
+     * @returns {Promise<Array<import('../types').FileInfo>>}
+     */
+    async listDirectory(path) {
+        const result = await window.electronAPI.invoke('list-directory', path);
+        if (!result?.entries) {
+            return [];
+        }
+
+        return result.entries.map((entry) => ({
+            name: entry.name,
+            isDir: entry.isDirectory,
+            size: entry.size ?? 0,
+            modified: entry.modified ?? 0,
+            path: entry.path
+        }));
+    },
+
+    /**
+     * Check if path exists
+     * @param {string} path - Path to check
+     * @returns {Promise<boolean>}
+     */
+    async exists(path) {
+        return await window.electronAPI.file.exists(path);
+    },
+
+    /**
+     * Check if path is a directory
+     * @param {string} path - Path to check
+     * @returns {Promise<boolean>}
+     */
+    async isDirectory(path) {
+        return await window.electronAPI.file.isDirectory(path);
+    },
+
+    /**
+     * Copy file or directory
+     * @param {string} source - Source path
+     * @param {string} dest - Destination path
+     * @returns {Promise<void>}
+     */
+    async copy(source, dest) {
+        return await window.electronAPI.file.copy(source, dest);
+    },
+
+    /**
+     * Move file or directory
+     * @param {string} source - Source path
+     * @param {string} dest - Destination path
+     * @returns {Promise<void>}
+     */
+    async move(source, dest) {
+        return await window.electronAPI.file.move(source, dest);
    }
-
-    return result.entries.map((entry) => ({
-      name: entry.name,
-      isDir: entry.isDirectory,
-      size: entry.size ?? 0,
-      modified: entry.modified ?? 0,
-      path: entry.path,
-    }));
-  },
-
-  /**
-   * Check if path exists
-   * @param {string} path - Path to check
-   * @returns {Promise<boolean>}
-   */
-  async exists(path) {
-    return await window.electronAPI.file.exists(path);
-  },
-
-  /**
-   * Check if path is a directory
-   * @param {string} path - Path to check
-   * @returns {Promise<boolean>}
-   */
-  async isDirectory(path) {
-    return await window.electronAPI.file.isDirectory(path);
-  },
-
-  /**
-   * Copy file or directory
-   * @param {string} source - Source path
-   * @param {string} dest - Destination path
-   * @returns {Promise<void>}
-   */
-  async copy(source, dest) {
-    return await window.electronAPI.file.copy(source, dest);
-  },
-
-  /**
-   * Move file or directory
-   * @param {string} source - Source path
-   * @param {string} dest - Destination path
-   * @returns {Promise<void>}
-   */
-  async move(source, dest) {
-    return await window.electronAPI.file.move(source, dest);
-  },
 };

 module.exports = { electronFsAdapter };
@@ -129,5 +129,5 @@
 */

 module.exports = {
-  // Type definitions are JSDoc only, no runtime exports needed
+    // Type definitions are JSDoc only, no runtime exports needed
 };
@@ -5,19 +5,19 @@
 const { analyze } = require('./writing-analytics');

 function showAnalyticsModal(tabManager) {
-  const existing = document.getElementById('analytics-modal');
-  if (existing) existing.remove();
+    const existing = document.getElementById('analytics-modal');
+    if (existing) existing.remove();

-  const content = tabManager.getEditorContent();
-  const metrics = analyze(content);
+    const content = tabManager.getEditorContent();
+    const metrics = analyze(content);

-  const overlay = document.createElement('div');
-  overlay.id = 'analytics-modal';
-  overlay.className = 'analytics-overlay';
+    const overlay = document.createElement('div');
+    overlay.id = 'analytics-modal';
+    overlay.className = 'analytics-overlay';

-  const maxCount = metrics.topWords.length > 0 ? metrics.topWords[0].count : 1;
+    const maxCount = metrics.topWords.length > 0 ? metrics.topWords[0].count : 1;

-  overlay.innerHTML = `
+    overlay.innerHTML = `
        <div class="analytics-modal">
            <div class="analytics-header">
                <h2>Writing Analytics</h2>
@@ -61,15 +61,11 @@ function showAnalyticsModal(tabManager) {
                        <span class="analytics-label">Avg Sentence</span>
                        <span class="analytics-value">${metrics.avgSentenceLength} words</span>
                    </div>
-                    ${
-                      metrics.longestSentenceLength > 0
-                        ? `
+                    ${metrics.longestSentenceLength > 0 ? `
                    <div class="analytics-row analytics-longest">
                        <span class="analytics-label">Longest (${metrics.longestSentenceLength} words)</span>
                        <span class="analytics-value analytics-sentence-preview">${escapeHtml(metrics.longestSentence)}</span>
-                    </div>`
-                        : ''
-                    }
+                    </div>` : ''}
                </div>

                <div class="analytics-section">
@@ -78,45 +74,39 @@ function showAnalyticsModal(tabManager) {
                        <span class="analytics-label">Unique</span>
                        <span class="analytics-value">${metrics.uniqueWordCount} / ${metrics.wordCount}<small>${metrics.lexicalDiversity}%</small></span>
                    </div>
-                    ${
-                      metrics.topWords.length > 0
-                        ? `
+                    ${metrics.topWords.length > 0 ? `
                    <div class="word-cloud">
-                        ${metrics.topWords
-                          .map((w) => {
+                        ${metrics.topWords.map(w => {
                            const scale = 13 + Math.round((w.count / maxCount) * 3);
                            return `<span class="word-tag" style="font-size:${scale}px">${escapeHtml(w.word)}<small>${w.count}</small></span>`;
-                          })
-                          .join('')}
-                    </div>`
-                        : ''
-                    }
+                        }).join('')}
+                    </div>` : ''}
                </div>
            </div>
        </div>
    `;

-  const closeBtn = overlay.querySelector('.analytics-close');
-  closeBtn.addEventListener('click', () => overlay.remove());
-  overlay.addEventListener('click', (e) => {
-    if (e.target === overlay) overlay.remove();
-  });
+    const closeBtn = overlay.querySelector('.analytics-close');
+    closeBtn.addEventListener('click', () => overlay.remove());
+    overlay.addEventListener('click', (e) => {
+        if (e.target === overlay) overlay.remove();
+    });

-  const escHandler = (e) => {
-    if (e.key === 'Escape') {
-      overlay.remove();
-      document.removeEventListener('keydown', escHandler);
-    }
-  };
-  document.addEventListener('keydown', escHandler);
+    const escHandler = (e) => {
+        if (e.key === 'Escape') {
+            overlay.remove();
+            document.removeEventListener('keydown', escHandler);
+        }
+    };
+    document.addEventListener('keydown', escHandler);

-  document.body.appendChild(overlay);
+    document.body.appendChild(overlay);
 }

 function escapeHtml(str) {
-  const div = document.createElement('div');
-  div.textContent = str;
-  return div.innerHTML;
+    const div = document.createElement('div');
+    div.textContent = str;
+    return div.innerHTML;
 }

 module.exports = { showAnalyticsModal };
@@ -4,197 +4,124 @@
 */

 const STOP_WORDS = new Set([
-  'the',
-  'a',
-  'an',
-  'is',
-  'are',
-  'was',
-  'were',
-  'be',
-  'been',
-  'have',
-  'has',
-  'had',
-  'do',
-  'does',
-  'did',
-  'will',
-  'would',
-  'could',
-  'should',
-  'to',
-  'of',
-  'in',
-  'for',
-  'on',
-  'with',
-  'at',
-  'by',
-  'from',
-  'as',
-  'and',
-  'or',
-  'but',
-  'if',
-  'it',
-  'its',
-  'this',
-  'that',
-  'these',
-  'those',
-  'i',
-  'me',
-  'my',
-  'we',
-  'our',
-  'you',
-  'your',
-  'he',
-  'him',
-  'his',
-  'she',
-  'her',
-  'they',
-  'them',
-  'their',
-  'not',
-  'no',
-  'so',
-  'than',
-  'too',
-  'very',
-  'also',
-  'just',
-  'about',
-  'up',
-  'out',
-  'what',
-  'which',
-  'who',
+    'the', 'a', 'an', 'is', 'are', 'was', 'were', 'be', 'been',
+    'have', 'has', 'had', 'do', 'does', 'did', 'will', 'would',
+    'could', 'should', 'to', 'of', 'in', 'for', 'on', 'with',
+    'at', 'by', 'from', 'as', 'and', 'or', 'but', 'if', 'it',
+    'its', 'this', 'that', 'these', 'those', 'i', 'me', 'my',
+    'we', 'our', 'you', 'your', 'he', 'him', 'his', 'she', 'her',
+    'they', 'them', 'their', 'not', 'no', 'so', 'than', 'too',
+    'very', 'also', 'just', 'about', 'up', 'out', 'what', 'which', 'who'
 ]);

 function countSyllables(word) {
-  word = word.toLowerCase().replace(/(?:[^laeiouy]es|ed|[^laeiouy]e)$/, '');
-  word = word.replace(/^y/, '');
-  return word.match(/[aeiouy]{1,2}/gi)?.length || 1;
+    word = word.toLowerCase().replace(/(?:[^laeiouy]es|ed|[^laeiouy]e)$/, '');
+    word = word.replace(/^y/, '');
+    return word.match(/[aeiouy]{1,2}/gi)?.length || 1;
 }

 function extractWords(text) {
-  return text.match(/[a-zA-Z]+(?:['-][a-zA-Z]+)*/g) || [];
+    return text.match(/[a-zA-Z]+(?:['-][a-zA-Z]+)*/g) || [];
 }

 function getReadabilityLabel(score) {
-  if (score >= 90) return 'Very Easy';
-  if (score >= 70) return 'Easy';
-  if (score >= 50) return 'Standard';
-  if (score >= 30) return 'Difficult';
-  return 'Very Difficult';
+    if (score >= 90) return 'Very Easy';
+    if (score >= 70) return 'Easy';
+    if (score >= 50) return 'Standard';
+    if (score >= 30) return 'Difficult';
+    return 'Very Difficult';
 }

 function analyze(text) {
-  if (!text || !text.trim()) {
+    if (!text || !text.trim()) {
+        return {
+            wordCount: 0,
+            sentenceCount: 0,
+            paragraphCount: 0,
+            fleschEase: 0,
+            fleschGrade: 0,
+            readabilityLabel: 'N/A',
+            readingTime: 0,
+            speakingTime: 0,
+            uniqueWordCount: 0,
+            lexicalDiversity: 0,
+            avgSentenceLength: 0,
+            longestSentence: '',
+            longestSentenceLength: 0,
+            topWords: []
+        };
+    }
+
+    const words = extractWords(text);
+    const wordCount = words.length;
+
+    const sentences = text.split(/[.!?]+/).map(s => s.trim()).filter(Boolean);
+    const sentenceCount = Math.max(sentences.length, 1);
+
+    const paragraphs = text.split(/\n\s*\n/).map(p => p.trim()).filter(Boolean);
+    const paragraphCount = Math.max(paragraphs.length, 1);
+
+    let totalSyllables = 0;
+    for (const w of words) {
+        totalSyllables += countSyllables(w);
+    }
+
+    const fleschEase = Math.round((206.835 - 1.015 * (wordCount / sentenceCount) - 84.6 * (totalSyllables / wordCount)) * 10) / 10;
+    const fleschGrade = Math.round((0.39 * (wordCount / sentenceCount) + 11.8 * (totalSyllables / wordCount) - 15.59) * 10) / 10;
+    const readabilityLabel = getReadabilityLabel(fleschEase);
+
+    const readingTime = Math.ceil(wordCount / 200);
+    const speakingTime = Math.ceil(wordCount / 130);
+
+    const uniqueWords = new Set(words.map(w => w.toLowerCase()));
+    const uniqueWordCount = uniqueWords.size;
+    const lexicalDiversity = wordCount > 0 ? Math.round((uniqueWordCount / wordCount) * 1000) / 10 : 0;
+
+    const avgSentenceLength = Math.round((wordCount / sentenceCount) * 10) / 10;
+
+    let longestSentence = '';
+    let longestSentenceLength = 0;
+    for (const s of sentences) {
+        const sWords = extractWords(s);
+        if (sWords.length > longestSentenceLength) {
+            longestSentenceLength = sWords.length;
+            longestSentence = s.trim();
+        }
+    }
+
+    if (longestSentence.length > 80) {
+        longestSentence = longestSentence.substring(0, 80) + '...';
+    }
+
+    const wordFreq = {};
+    for (const w of words) {
+        const lower = w.toLowerCase();
+        if (!STOP_WORDS.has(lower) && lower.length > 1) {
+            wordFreq[lower] = (wordFreq[lower] || 0) + 1;
+        }
+    }
+
+    const topWords = Object.entries(wordFreq)
+        .sort((a, b) => b[1] - a[1])
+        .slice(0, 10)
+        .map(([word, count]) => ({ word, count }));
+
    return {
-      wordCount: 0,
-      sentenceCount: 0,
-      paragraphCount: 0,
-      fleschEase: 0,
-      fleschGrade: 0,
-      readabilityLabel: 'N/A',
-      readingTime: 0,
-      speakingTime: 0,
-      uniqueWordCount: 0,
-      lexicalDiversity: 0,
-      avgSentenceLength: 0,
-      longestSentence: '',
-      longestSentenceLength: 0,
-      topWords: [],
+        wordCount,
+        sentenceCount,
+        paragraphCount,
+        fleschEase,
+        fleschGrade,
+        readabilityLabel,
+        readingTime,
+        speakingTime,
+        uniqueWordCount,
+        lexicalDiversity,
+        avgSentenceLength,
+        longestSentence,
+        longestSentenceLength,
+        topWords
    };
-  }
-
-  const words = extractWords(text);
-  const wordCount = words.length;
-
-  const sentences = text
-    .split(/[.!?]+/)
-    .map((s) => s.trim())
-    .filter(Boolean);
-  const sentenceCount = Math.max(sentences.length, 1);
-
-  const paragraphs = text
-    .split(/\n\s*\n/)
-    .map((p) => p.trim())
-    .filter(Boolean);
-  const paragraphCount = Math.max(paragraphs.length, 1);
-
-  let totalSyllables = 0;
-  for (const w of words) {
-    totalSyllables += countSyllables(w);
-  }
-
-  const fleschEase =
-    Math.round(
-      (206.835 - 1.015 * (wordCount / sentenceCount) - 84.6 * (totalSyllables / wordCount)) * 10
-    ) / 10;
-  const fleschGrade =
-    Math.round(
-      (0.39 * (wordCount / sentenceCount) + 11.8 * (totalSyllables / wordCount) - 15.59) * 10
-    ) / 10;
-  const readabilityLabel = getReadabilityLabel(fleschEase);
-
-  const readingTime = Math.ceil(wordCount / 200);
-  const speakingTime = Math.ceil(wordCount / 130);
-
-  const uniqueWords = new Set(words.map((w) => w.toLowerCase()));
-  const uniqueWordCount = uniqueWords.size;
-  const lexicalDiversity =
-    wordCount > 0 ? Math.round((uniqueWordCount / wordCount) * 1000) / 10 : 0;
-
-  const avgSentenceLength = Math.round((wordCount / sentenceCount) * 10) / 10;
-
-  let longestSentence = '';
-  let longestSentenceLength = 0;
-  for (const s of sentences) {
-    const sWords = extractWords(s);
-    if (sWords.length > longestSentenceLength) {
-      longestSentenceLength = sWords.length;
-      longestSentence = s.trim();
-    }
-  }
-
-  if (longestSentence.length > 80) {
-    longestSentence = longestSentence.substring(0, 80) + '...';
-  }
-
-  const wordFreq = {};
-  for (const w of words) {
-    const lower = w.toLowerCase();
-    if (!STOP_WORDS.has(lower) && lower.length > 1) {
-      wordFreq[lower] = (wordFreq[lower] || 0) + 1;
-    }
-  }
-
-  const topWords = Object.entries(wordFreq)
-    .sort((a, b) => b[1] - a[1])
-    .slice(0, 10)
-    .map(([word, count]) => ({ word, count }));
-
-  return {
-    wordCount,
-    sentenceCount,
-    paragraphCount,
-    fleschEase,
-    fleschGrade,
-    readabilityLabel,
-    readingTime,
-    speakingTime,
-    uniqueWordCount,
-    lexicalDiversity,
-    avgSentenceLength,
-    longestSentence,
-    longestSentenceLength,
-    topWords,
-  };
 }

 module.exports = { analyze };
@@ -1,113 +1,109 @@
 class CommandPalette {
-  constructor() {
-    this.overlay = document.getElementById('command-palette-overlay');
-    this.input = document.getElementById('command-palette-input');
-    this.results = document.getElementById('command-palette-results');
-    this.commands = [];
-    this.selectedIndex = 0;
-    this.filteredCommands = [];
-    this.setupEventListeners();
-  }
+    constructor() {
+        this.overlay = document.getElementById('command-palette-overlay');
+        this.input = document.getElementById('command-palette-input');
+        this.results = document.getElementById('command-palette-results');
+        this.commands = [];
+        this.selectedIndex = 0;
+        this.filteredCommands = [];
+        this.setupEventListeners();
+    }

-  register(label, shortcut, action) {
-    this.commands.push({ label, shortcut, action });
-  }
+    register(label, shortcut, action) {
+        this.commands.push({ label, shortcut, action });
+    }

-  open() {
-    this.overlay.classList.remove('hidden');
-    this.input.value = '';
-    this.input.focus();
-    this.selectedIndex = 0;
-    this.renderResults('');
-  }
+    open() {
+        this.overlay.classList.remove('hidden');
+        this.input.value = '';
+        this.input.focus();
+        this.selectedIndex = 0;
+        this.renderResults('');
+    }

-  close() {
-    this.overlay.classList.add('hidden');
-  }
+    close() {
+        this.overlay.classList.add('hidden');
+    }

-  isOpen() {
-    return !this.overlay.classList.contains('hidden');
-  }
+    isOpen() {
+        return !this.overlay.classList.contains('hidden');
+    }

-  setupEventListeners() {
-    this.input.addEventListener('input', () => {
-      this.selectedIndex = 0;
-      this.renderResults(this.input.value);
-    });
+    setupEventListeners() {
+        this.input.addEventListener('input', () => {
+            this.selectedIndex = 0;
+            this.renderResults(this.input.value);
+        });

-    this.overlay.addEventListener('click', (e) => {
-      if (e.target === this.overlay) this.close();
-    });
+        this.overlay.addEventListener('click', (e) => {
+            if (e.target === this.overlay) this.close();
+        });

-    this.input.addEventListener('keydown', (e) => {
-      if (e.key === 'Escape') {
-        e.preventDefault();
-        this.close();
-      } else if (e.key === 'Enter') {
-        e.preventDefault();
-        this.executeSelected();
-      } else if (e.key === 'ArrowDown') {
-        e.preventDefault();
-        this.selectedIndex = Math.min(this.selectedIndex + 1, this.filteredCommands.length - 1);
-        this.updateSelection();
-      } else if (e.key === 'ArrowUp') {
-        e.preventDefault();
-        this.selectedIndex = Math.max(this.selectedIndex - 1, 0);
-        this.updateSelection();
-      }
-    });
-  }
+        this.input.addEventListener('keydown', (e) => {
+            if (e.key === 'Escape') {
+                e.preventDefault();
+                this.close();
+            } else if (e.key === 'Enter') {
+                e.preventDefault();
+                this.executeSelected();
+            } else if (e.key === 'ArrowDown') {
+                e.preventDefault();
+                this.selectedIndex = Math.min(this.selectedIndex + 1, this.filteredCommands.length - 1);
+                this.updateSelection();
+            } else if (e.key === 'ArrowUp') {
+                e.preventDefault();
+                this.selectedIndex = Math.max(this.selectedIndex - 1, 0);
+                this.updateSelection();
+            }
+        });
+    }

-  renderResults(query) {
-    this.filteredCommands = query
-      ? this.commands.filter((cmd) => cmd.label.toLowerCase().includes(query.toLowerCase()))
-      : [...this.commands];
+    renderResults(query) {
+        this.filteredCommands = query
+            ? this.commands.filter(cmd => cmd.label.toLowerCase().includes(query.toLowerCase()))
+            : [...this.commands];

-    this.results.innerHTML = this.filteredCommands
-      .map(
-        (cmd, i) => `
+        this.results.innerHTML = this.filteredCommands.map((cmd, i) => `
            <div class="command-item ${i === this.selectedIndex ? 'selected' : ''}" data-index="${i}">
                <span class="command-label">${this.highlightMatch(cmd.label, query)}</span>
                ${cmd.shortcut ? `<span class="command-shortcut">${cmd.shortcut}</span>` : ''}
            </div>
-        `
-      )
-      .join('');
+        `).join('');

-    this.results.querySelectorAll('.command-item').forEach((el) => {
-      el.addEventListener('click', () => {
-        const idx = parseInt(el.dataset.index);
-        this.filteredCommands[idx].action();
-        this.close();
-      });
-      el.addEventListener('mouseenter', () => {
-        this.selectedIndex = parseInt(el.dataset.index);
-        this.updateSelection();
-      });
-    });
-  }
+        this.results.querySelectorAll('.command-item').forEach((el) => {
+            el.addEventListener('click', () => {
+                const idx = parseInt(el.dataset.index);
+                this.filteredCommands[idx].action();
+                this.close();
+            });
+            el.addEventListener('mouseenter', () => {
+                this.selectedIndex = parseInt(el.dataset.index);
+                this.updateSelection();
+            });
+        });
+    }

-  highlightMatch(text, query) {
-    if (!query) return text;
-    const regex = new RegExp(`(${query.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')})`, 'gi');
-    return text.replace(regex, '<strong>$1</strong>');
-  }
+    highlightMatch(text, query) {
+        if (!query) return text;
+        const regex = new RegExp(`(${query.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')})`, 'gi');
+        return text.replace(regex, '<strong>$1</strong>');
+    }

-  updateSelection() {
-    this.results.querySelectorAll('.command-item').forEach((el, i) => {
-      el.classList.toggle('selected', i === this.selectedIndex);
-    });
-    // Scroll selected into view
-    const selected = this.results.querySelector('.command-item.selected');
-    if (selected) selected.scrollIntoView({ block: 'nearest' });
-  }
+    updateSelection() {
+        this.results.querySelectorAll('.command-item').forEach((el, i) => {
+            el.classList.toggle('selected', i === this.selectedIndex);
+        });
+        // Scroll selected into view
+        const selected = this.results.querySelector('.command-item.selected');
+        if (selected) selected.scrollIntoView({ block: 'nearest' });
+    }

-  executeSelected() {
-    if (this.filteredCommands[this.selectedIndex]) {
-      this.filteredCommands[this.selectedIndex].action();
-      this.close();
+    executeSelected() {
+        if (this.filteredCommands[this.selectedIndex]) {
+            this.filteredCommands[this.selectedIndex].action();
+            this.close();
+        }
    }
-  }
 }

 module.exports = { CommandPalette };
@@ -12,23 +12,38 @@ const { EditorState } = require('@codemirror/state');
 const { markdown, markdownLanguage } = require('@codemirror/lang-markdown');
 // Language extensions loaded lazily on first use
 let _javascript, _html, _css, _json, _python;
-const { defaultKeymap, history, historyKeymap, indentWithTab } = require('@codemirror/commands');
-const { searchKeymap, highlightSelectionMatches } = require('@codemirror/search');
-const { autocompletion, completionKeymap } = require('@codemirror/autocomplete');
-const { bracketMatching, foldGutter, indentOnInput } = require('@codemirror/language');
+const {
+  defaultKeymap,
+  history,
+  historyKeymap,
+  indentWithTab,
+} = require('@codemirror/commands');
+const {
+  searchKeymap,
+  highlightSelectionMatches,
+} = require('@codemirror/search');
+const {
+  autocompletion,
+  completionKeymap,
+} = require('@codemirror/autocomplete');
+const {
+  bracketMatching,
+  foldGutter,
+  indentOnInput,
+} = require('@codemirror/language');
 const { oneDark } = require('@codemirror/theme-one-dark');

 // Custom theme for JetBrains Mono font
 const jetBrainsMonoTheme = EditorView.theme({
  '&': {
-    fontFamily: "'JetBrains Mono', 'Fira Code', 'SF Mono', Monaco, 'Courier New', monospace",
+    fontFamily: "'JetBrains Mono', 'Fira Code', 'SF Mono', Monaco, 'Courier New', monospace"
  },
  '.cm-content': {
-    fontFamily: 'inherit',
+    fontFamily: 'inherit'
  },
  '.cm-scroller': {
-    fontFamily: 'inherit',
-  },
+    fontFamily: 'inherit'
+  }
 });

 /**
@@ -44,14 +59,7 @@ const jetBrainsMonoTheme = EditorView.theme({
 * @returns {EditorView} the created editor view
 */
 function createEditor(parentElement, options = {}) {
-  console.log(
-    '[createEditor] Called with parentElement:',
-    parentElement?.id,
-    'dimensions:',
-    parentElement?.clientWidth,
-    'x',
-    parentElement?.clientHeight
-  );
+  console.log('[createEditor] Called with parentElement:', parentElement?.id, 'dimensions:', parentElement?.clientWidth, 'x', parentElement?.clientHeight);
  if (!parentElement) {
    console.error('[createEditor] ERROR: parentElement is null or undefined!');
    return null;
@@ -117,26 +125,11 @@ function createEditor(parentElement, options = {}) {
 */
 function getLanguageExtension(lang) {
  const loaders = {
-    javascript: () => {
-      if (!_javascript) _javascript = require('@codemirror/lang-javascript').javascript;
-      return _javascript();
-    },
-    html: () => {
-      if (!_html) _html = require('@codemirror/lang-html').html;
-      return _html();
-    },
-    css: () => {
-      if (!_css) _css = require('@codemirror/lang-css').css;
-      return _css();
-    },
-    json: () => {
-      if (!_json) _json = require('@codemirror/lang-json').json;
-      return _json();
-    },
-    python: () => {
-      if (!_python) _python = require('@codemirror/lang-python').python;
-      return _python();
-    },
+    javascript: () => { if (!_javascript) _javascript = require('@codemirror/lang-javascript').javascript; return _javascript(); },
+    html: () => { if (!_html) _html = require('@codemirror/lang-html').html; return _html(); },
+    css: () => { if (!_css) _css = require('@codemirror/lang-css').css; return _css(); },
+    json: () => { if (!_json) _json = require('@codemirror/lang-json').json; return _json(); },
+    python: () => { if (!_python) _python = require('@codemirror/lang-python').python; return _python(); },
    markdown: () => markdown({ base: markdownLanguage }),
  };
  loaders.js = loaders.javascript;
@@ -2,74 +2,74 @@

 /* Inter Font Family */
@font-face {
-  font-family: 'Inter';
-  font-style: normal;
-  font-weight: 300;
-  font-display: swap;
-  src: url('../assets/fonts/Inter-Light.woff2') format('woff2');
+    font-family: 'Inter';
+    font-style: normal;
+    font-weight: 300;
+    font-display: swap;
+    src: url('../assets/fonts/Inter-Light.woff2') format('woff2');
 }

@font-face {
-  font-family: 'Inter';
-  font-style: normal;
-  font-weight: 400;
-  font-display: swap;
-  src: url('../assets/fonts/Inter-Regular.woff2') format('woff2');
+    font-family: 'Inter';
+    font-style: normal;
+    font-weight: 400;
+    font-display: swap;
+    src: url('../assets/fonts/Inter-Regular.woff2') format('woff2');
 }

@font-face {
-  font-family: 'Inter';
-  font-style: normal;
-  font-weight: 500;
-  font-display: swap;
-  src: url('../assets/fonts/Inter-Medium.woff2') format('woff2');
+    font-family: 'Inter';
+    font-style: normal;
+    font-weight: 500;
+    font-display: swap;
+    src: url('../assets/fonts/Inter-Medium.woff2') format('woff2');
 }

@font-face {
-  font-family: 'Inter';
-  font-style: normal;
-  font-weight: 600;
-  font-display: swap;
-  src: url('../assets/fonts/Inter-SemiBold.woff2') format('woff2');
+    font-family: 'Inter';
+    font-style: normal;
+    font-weight: 600;
+    font-display: swap;
+    src: url('../assets/fonts/Inter-SemiBold.woff2') format('woff2');
 }

@font-face {
-  font-family: 'Inter';
-  font-style: normal;
-  font-weight: 700;
-  font-display: swap;
-  src: url('../assets/fonts/Inter-Bold.woff2') format('woff2');
+    font-family: 'Inter';
+    font-style: normal;
+    font-weight: 700;
+    font-display: swap;
+    src: url('../assets/fonts/Inter-Bold.woff2') format('woff2');
 }

 /* JetBrains Mono Font Family - For code, markdown editor, and ASCII art */
@font-face {
-  font-family: 'JetBrains Mono';
-  font-style: normal;
-  font-weight: 400;
-  font-display: swap;
-  src: url('../assets/fonts/JetBrainsMono-Regular.woff2') format('woff2');
+    font-family: 'JetBrains Mono';
+    font-style: normal;
+    font-weight: 400;
+    font-display: swap;
+    src: url('../assets/fonts/JetBrainsMono-Regular.woff2') format('woff2');
 }

@font-face {
-  font-family: 'JetBrains Mono';
-  font-style: normal;
-  font-weight: 500;
-  font-display: swap;
-  src: url('../assets/fonts/JetBrainsMono-Medium.woff2') format('woff2');
+    font-family: 'JetBrains Mono';
+    font-style: normal;
+    font-weight: 500;
+    font-display: swap;
+    src: url('../assets/fonts/JetBrainsMono-Medium.woff2') format('woff2');
 }

@font-face {
-  font-family: 'JetBrains Mono';
-  font-style: normal;
-  font-weight: 600;
-  font-display: swap;
-  src: url('../assets/fonts/JetBrainsMono-SemiBold.woff2') format('woff2');
+    font-family: 'JetBrains Mono';
+    font-style: normal;
+    font-weight: 600;
+    font-display: swap;
+    src: url('../assets/fonts/JetBrainsMono-SemiBold.woff2') format('woff2');
 }

@font-face {
-  font-family: 'JetBrains Mono';
-  font-style: normal;
-  font-weight: 700;
-  font-display: swap;
-  src: url('../assets/fonts/JetBrainsMono-Bold.woff2') format('woff2');
+    font-family: 'JetBrains Mono';
+    font-style: normal;
+    font-weight: 700;
+    font-display: swap;
+    src: url('../assets/fonts/JetBrainsMono-Bold.woff2') format('woff2');
 }
@@ -8,7 +8,7 @@ async function getStatus(dir) {
  try {
    const git = getGitInstance(dir);
    return await git.status();
-  } catch {
+  } catch (err) {
    return { error: 'Not a git repository' };
  }
 }
@@ -4,11 +4,11 @@ const { PDFDocument, rgb, degrees, StandardFonts } = require('pdf-lib');

 function parsePageRanges(rangeString, totalPages) {
  const pages = [];
-  const ranges = rangeString.split(',').map((r) => r.trim());
+  const ranges = rangeString.split(',').map(r => r.trim());

  for (const range of ranges) {
    if (range.includes('-')) {
-      const [start, end] = range.split('-').map((n) => parseInt(n.trim()));
+      const [start, end] = range.split('-').map(n => parseInt(n.trim()));
      for (let i = start; i <= end && i <= totalPages; i++) {
        if (i > 0 && !pages.includes(i - 1)) {
          pages.push(i - 1);
@@ -27,13 +27,11 @@ function parsePageRanges(rangeString, totalPages) {

 function hexToRgb(hex) {
  const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
-  return result
-    ? {
-        r: parseInt(result[1], 16) / 255,
-        g: parseInt(result[2], 16) / 255,
-        b: parseInt(result[3], 16) / 255,
-      }
-    : { r: 0, g: 0, b: 0 };
+  return result ? {
+    r: parseInt(result[1], 16) / 255,
+    g: parseInt(result[2], 16) / 255,
+    b: parseInt(result[3], 16) / 255
+  } : { r: 0, g: 0, b: 0 };
 }

 async function pdfMerge(data) {
@@ -44,7 +42,7 @@ async function pdfMerge(data) {
      const pdfBytes = fs.readFileSync(filePath);
      const pdf = await PDFDocument.load(pdfBytes);
      const copiedPages = await mergedPdf.copyPages(pdf, pdf.getPageIndices());
-      copiedPages.forEach((page) => mergedPdf.addPage(page));
+      copiedPages.forEach(page => mergedPdf.addPage(page));
    }

    const pdfBytes = await mergedPdf.save();
@@ -65,13 +63,13 @@ async function pdfSplit(data) {
    const splits = [];

    if (data.splitMode === 'pages') {
-      const ranges = data.pageRanges.split(',').map((r) => r.trim());
+      const ranges = data.pageRanges.split(',').map(r => r.trim());
      for (let i = 0; i < ranges.length; i++) {
        const range = ranges[i];
        const pages = [];

        if (range.includes('-')) {
-          const [start, end] = range.split('-').map((n) => parseInt(n.trim()));
+          const [start, end] = range.split('-').map(n => parseInt(n.trim()));
          for (let p = start; p <= end && p <= totalPages; p++) {
            pages.push(p - 1);
          }
@@ -110,7 +108,7 @@ async function pdfSplit(data) {
    for (const split of splits) {
      const newPdf = await PDFDocument.create();
      const copiedPages = await newPdf.copyPages(pdf, split.pages);
-      copiedPages.forEach((page) => newPdf.addPage(page));
+      copiedPages.forEach(page => newPdf.addPage(page));

      const outputPath = path.join(data.outputFolder, `${baseName}_${split.name}.pdf`);
      const newPdfBytes = await newPdf.save();
@@ -131,18 +129,18 @@ async function pdfCompress(data) {
    const compressedPdfBytes = await pdf.save({
      useObjectStreams: true,
      addDefaultPage: false,
-      objectsPerTick: 50,
+      objectsPerTick: 50
    });

    fs.writeFileSync(data.outputPath, compressedPdfBytes);

    const originalSize = fs.statSync(data.inputPath).size;
    const compressedSize = fs.statSync(data.outputPath).size;
-    const savings = (((originalSize - compressedSize) / originalSize) * 100).toFixed(1);
+    const savings = ((originalSize - compressedSize) / originalSize * 100).toFixed(1);

    return {
      success: true,
-      message: `PDF compressed. Size reduced by ${savings}% (${(originalSize / 1024).toFixed(1)}KB → ${(compressedSize / 1024).toFixed(1)}KB)`,
+      message: `PDF compressed. Size reduced by ${savings}% (${(originalSize / 1024).toFixed(1)}KB → ${(compressedSize / 1024).toFixed(1)}KB)`
    };
  } catch (error) {
    return { success: false, error: error.message };
@@ -162,7 +160,7 @@ async function pdfRotate(data) {
      pagesToRotate = Array.from({ length: totalPages }, (_, i) => i);
    }

-    pagesToRotate.forEach((pageIndex) => {
+    pagesToRotate.forEach(pageIndex => {
      const page = pdf.getPage(pageIndex);
      page.setRotation(degrees(data.angle));
    });
@@ -172,7 +170,7 @@ async function pdfRotate(data) {

    return {
      success: true,
-      message: `Successfully rotated ${pagesToRotate.length} page(s) by ${data.angle}\u00B0`,
+      message: `Successfully rotated ${pagesToRotate.length} page(s) by ${data.angle}\u00B0`
    };
  } catch (error) {
    return { success: false, error: error.message };
@@ -187,18 +185,16 @@ async function pdfDeletePages(data) {

    const pagesToDelete = parsePageRanges(data.pages, totalPages);

-    pagesToDelete
-      .sort((a, b) => b - a)
-      .forEach((pageIndex) => {
-        pdf.removePage(pageIndex);
-      });
+    pagesToDelete.sort((a, b) => b - a).forEach(pageIndex => {
+      pdf.removePage(pageIndex);
+    });

    const newPdfBytes = await pdf.save();
    fs.writeFileSync(data.outputPath, newPdfBytes);

    return {
      success: true,
-      message: `Successfully deleted ${pagesToDelete.length} page(s). New PDF has ${totalPages - pagesToDelete.length} pages`,
+      message: `Successfully deleted ${pagesToDelete.length} page(s). New PDF has ${totalPages - pagesToDelete.length} pages`
    };
  } catch (error) {
    return { success: false, error: error.message };
@@ -211,7 +207,7 @@ async function pdfReorder(data) {
    const pdf = await PDFDocument.load(pdfBytes);
    const totalPages = pdf.getPageCount();

-    const newOrder = data.newOrder.split(',').map((n) => parseInt(n.trim()) - 1);
+    const newOrder = data.newOrder.split(',').map(n => parseInt(n.trim()) - 1);

    if (newOrder.length !== totalPages) {
      return { success: false, error: `New order must include all ${totalPages} pages` };
@@ -219,7 +215,7 @@ async function pdfReorder(data) {

    const newPdf = await PDFDocument.create();
    const copiedPages = await newPdf.copyPages(pdf, newOrder);
-    copiedPages.forEach((page) => newPdf.addPage(page));
+    copiedPages.forEach(page => newPdf.addPage(page));

    const reorderedPdfBytes = await newPdf.save();
    fs.writeFileSync(data.outputPath, reorderedPdfBytes);
@@ -250,9 +246,7 @@ async function pdfWatermark(data) {
      const page = pdf.getPage(pageIndex);
      const { width, height } = page.getSize();

-      let x,
-        y,
-        rotation = 0;
+      let x, y, rotation = 0;

      switch (data.position) {
        case 'center':
@@ -300,7 +294,7 @@ async function pdfWatermark(data) {
        font,
        color: rgb(color.r, color.g, color.b),
        opacity: data.opacity,
-        rotate: degrees(rotation),
+        rotate: degrees(rotation)
      });
    }

@@ -309,7 +303,7 @@ async function pdfWatermark(data) {

    return {
      success: true,
-      message: `Successfully added watermark to ${pagesToWatermark.length} page(s)`,
+      message: `Successfully added watermark to ${pagesToWatermark.length} page(s)`
    };
  } catch (error) {
    return { success: false, error: error.message };
@@ -331,8 +325,8 @@ async function pdfEncrypt(data) {
        annotating: data.permissions.annotating,
        fillingForms: data.permissions.fillingForms,
        contentAccessibility: data.permissions.contentAccessibility,
-        documentAssembly: data.permissions.documentAssembly,
-      },
+        documentAssembly: data.permissions.documentAssembly
+      }
    });

    fs.writeFileSync(data.outputPath, encryptedPdfBytes);
@@ -342,8 +336,7 @@ async function pdfEncrypt(data) {
    if (error.message.includes('encrypt') || error.message.includes('password')) {
      return {
        success: false,
-        error:
-          'PDF encryption requires pdf-lib with encryption support. This feature may not be available in the current version.',
+        error: 'PDF encryption requires pdf-lib with encryption support. This feature may not be available in the current version.'
      };
    }
    return { success: false, error: error.message };
@@ -382,8 +375,8 @@ async function pdfSetPermissions(data) {
        annotating: data.permissions.annotating,
        fillingForms: data.permissions.fillingForms,
        contentAccessibility: data.permissions.contentAccessibility,
-        documentAssembly: data.permissions.documentAssembly,
-      },
+        documentAssembly: data.permissions.documentAssembly
+      }
    });

    fs.writeFileSync(data.outputPath, newPdfBytes);
@@ -393,8 +386,7 @@ async function pdfSetPermissions(data) {
    if (error.message.includes('encrypt') || error.message.includes('permission')) {
      return {
        success: false,
-        error:
-          'PDF permissions require pdf-lib with encryption support. This feature may not be available in the current version.',
+        error: 'PDF permissions require pdf-lib with encryption support. This feature may not be available in the current version.'
      };
    }
    return { success: false, error: error.message };
@@ -403,28 +395,17 @@ async function pdfSetPermissions(data) {

 function executeOperation(operation, data) {
  switch (operation) {
-    case 'merge':
-      return pdfMerge(data);
-    case 'split':
-      return pdfSplit(data);
-    case 'compress':
-      return pdfCompress(data);
-    case 'rotate':
-      return pdfRotate(data);
-    case 'delete':
-      return pdfDeletePages(data);
-    case 'reorder':
-      return pdfReorder(data);
-    case 'watermark':
-      return pdfWatermark(data);
-    case 'encrypt':
-      return pdfEncrypt(data);
-    case 'decrypt':
-      return pdfDecrypt(data);
-    case 'permissions':
-      return pdfSetPermissions(data);
-    default:
-      return Promise.resolve({ success: false, error: `Unknown operation: ${operation}` });
+    case 'merge': return pdfMerge(data);
+    case 'split': return pdfSplit(data);
+    case 'compress': return pdfCompress(data);
+    case 'rotate': return pdfRotate(data);
+    case 'delete': return pdfDeletePages(data);
+    case 'reorder': return pdfReorder(data);
+    case 'watermark': return pdfWatermark(data);
+    case 'encrypt': return pdfEncrypt(data);
+    case 'decrypt': return pdfDecrypt(data);
+    case 'permissions': return pdfSetPermissions(data);
+    default: return Promise.resolve({ success: false, error: `Unknown operation: ${operation}` });
  }
 }

@@ -448,5 +429,5 @@ module.exports = {
  pdfDecrypt,
  pdfSetPermissions,
  executeOperation,
-  getPageCount,
+  getPageCount
 };
@@ -5,7 +5,9 @@
  "description": "Demonstrates the plugin system. Safe to delete.",
  "icon": "puzzle",
  "extensionPoints": {
-    "commands": [{ "id": "hello", "label": "Sample: Hello World", "shortcut": "" }]
+    "commands": [
+      { "id": "hello", "label": "Sample: Hello World", "shortcut": "" }
+    ]
  },
  "settings": []
 }
@@ -9,7 +9,7 @@ class WritingStudioPlugin extends PluginAPI {
    this.context = context;

    this.sprintEngine = new SprintEngine({
-      onEvent: (name, data) => context.events.emit(name, data),
+      onEvent: (name, data) => context.events.emit(name, data)
    });
    this.goalTracker = new GoalTracker(context.settings);
    this.snapshotManager = new SnapshotManager(context.settings);
@@ -17,14 +17,14 @@ class WritingStudioPlugin extends PluginAPI {
      readFile: (p) => context.ipc.invoke('read-file', p),
      writeFile: (p, c) => context.ipc.invoke('write-file', p, c),
      fileExists: (p) => context.ipc.invoke('path-exists', p),
-      listDir: (p) => context.ipc.invoke('list-directory', p),
+      listDir: (p) => context.ipc.invoke('list-directory', p)
    });

    this._engines = {
      sprint: this.sprintEngine,
      goals: this.goalTracker,
      snapshots: this.snapshotManager,
-      projects: this.projectManager,
+      projects: this.projectManager
    };

    this._registerCommands(context);
@@ -34,89 +34,59 @@ class WritingStudioPlugin extends PluginAPI {
  _registerCommands(context) {
    const { sprintEngine, snapshotManager, goalTracker } = this;

-    context.commands.register(
-      'start-sprint',
-      'Studio: Start Sprint',
-      () => {
-        const duration = context.settings.get('sprintDuration') || 25;
-        const content = context.editor.getContent() || '';
-        const words = content.split(/\s+/).filter(Boolean).length;
-        sprintEngine.start(duration, words);
-      },
-      'Ctrl+Alt+S'
-    );
+    context.commands.register('start-sprint', 'Studio: Start Sprint', () => {
+      const duration = context.settings.get('sprintDuration') || 25;
+      const content = context.editor.getContent() || '';
+      const words = content.split(/\s+/).filter(Boolean).length;
+      sprintEngine.start(duration, words);
+    }, 'Ctrl+Alt+S');

-    context.commands.register(
-      'stop-sprint',
-      'Studio: Stop Sprint',
-      () => {
-        if (!sprintEngine.isActive()) return;
-        const content = context.editor.getContent() || '';
-        const words = content.split(/\s+/).filter(Boolean).length;
-        const result = sprintEngine.stop(words);
-        goalTracker.addWords(result.wordDelta);
-        context.events.emit('sprint:stopped', result);
-      },
-      'Ctrl+Alt+Shift+S'
-    );
+    context.commands.register('stop-sprint', 'Studio: Stop Sprint', () => {
+      if (!sprintEngine.isActive()) return;
+      const content = context.editor.getContent() || '';
+      const words = content.split(/\s+/).filter(Boolean).length;
+      const result = sprintEngine.stop(words);
+      goalTracker.addWords(result.wordDelta);
+      context.events.emit('sprint:stopped', result);
+    }, 'Ctrl+Alt+Shift+S');

-    context.commands.register(
-      'take-snapshot',
-      'Studio: Take Snapshot',
-      () => {
-        const content = context.editor.getContent() || '';
-        snapshotManager.create(content, 'manual');
-        context.events.emit('snapshot:created', {});
-      },
-      'Ctrl+Alt+N'
-    );
+    context.commands.register('take-snapshot', 'Studio: Take Snapshot', () => {
+      const content = context.editor.getContent() || '';
+      snapshotManager.create(content, 'manual');
+      context.events.emit('snapshot:created', {});
+    }, 'Ctrl+Alt+N');

-    context.commands.register(
-      'restore-last-snapshot',
-      'Studio: Restore Last Snapshot',
-      () => {
-        const snaps = snapshotManager.list();
-        if (snaps.length === 0) return;
-        const content = snapshotManager.restore(snaps[0].id);
-        context.editor.insertAtCursor(content);
-      },
-      'Ctrl+Alt+Z'
-    );
+    context.commands.register('restore-last-snapshot', 'Studio: Restore Last Snapshot', () => {
+      const snaps = snapshotManager.list();
+      if (snaps.length === 0) return;
+      const content = snapshotManager.restore(snaps[0].id);
+      context.editor.insertAtCursor(content);
+    }, 'Ctrl+Alt+Z');

    context.commands.register('new-project', 'Studio: New Project', () => {
      context.events.emit('studio:new-project', {});
    });

-    context.commands.register(
-      'compile-manuscript',
-      'Studio: Compile Manuscript',
-      () => {
-        context.events.emit('studio:compile', {});
-      },
-      'Ctrl+Alt+E'
-    );
+    context.commands.register('compile-manuscript', 'Studio: Compile Manuscript', () => {
+      context.events.emit('studio:compile', {});
+    }, 'Ctrl+Alt+E');

-    context.commands.register(
-      'proofread-document',
-      'Studio: Proofread Document',
-      () => {
-        if (context.events.hasHandler('ai:analyze')) {
-          const content = context.editor.getContent() || '';
-          context.events.emit('ai:analyze', { text: content, type: 'grammar' });
-        }
-      },
-      'Ctrl+Alt+G'
-    );
+    context.commands.register('proofread-document', 'Studio: Proofread Document', () => {
+      if (context.events.hasHandler('ai:analyze')) {
+        const content = context.editor.getContent() || '';
+        context.events.emit('ai:analyze', { text: content, type: 'grammar' });
+      }
+    }, 'Ctrl+Alt+G');
  }

  _registerStatusBar(context) {
    context.statusBar.registerIndicator('word-goal', {
      text: '0/1000',
-      tooltip: 'Daily word goal progress',
+      tooltip: 'Daily word goal progress'
    });
    context.statusBar.registerIndicator('sprint-timer', {
      text: '',
-      tooltip: 'Writing sprint timer',
+      tooltip: 'Writing sprint timer'
    });
  }

@@ -15,34 +15,17 @@
      { "id": "start-sprint", "label": "Studio: Start Sprint", "shortcut": "Ctrl+Alt+S" },
      { "id": "stop-sprint", "label": "Studio: Stop Sprint", "shortcut": "Ctrl+Alt+Shift+S" },
      { "id": "take-snapshot", "label": "Studio: Take Snapshot", "shortcut": "Ctrl+Alt+N" },
-      {
-        "id": "restore-last-snapshot",
-        "label": "Studio: Restore Last Snapshot",
-        "shortcut": "Ctrl+Alt+Z"
-      },
+      { "id": "restore-last-snapshot", "label": "Studio: Restore Last Snapshot", "shortcut": "Ctrl+Alt+Z" },
      { "id": "new-project", "label": "Studio: New Project", "shortcut": "" },
-      {
-        "id": "compile-manuscript",
-        "label": "Studio: Compile Manuscript",
-        "shortcut": "Ctrl+Alt+E"
-      },
-      {
-        "id": "proofread-document",
-        "label": "Studio: Proofread Document",
-        "shortcut": "Ctrl+Alt+G"
-      }
+      { "id": "compile-manuscript", "label": "Studio: Compile Manuscript", "shortcut": "Ctrl+Alt+E" },
+      { "id": "proofread-document", "label": "Studio: Proofread Document", "shortcut": "Ctrl+Alt+G" }
    ],
    "statusBar": { "indicators": ["sprint-timer", "word-goal"] }
  },
  "settings": [
    { "key": "dailyGoal", "type": "number", "default": 1000, "label": "Daily word goal" },
    { "key": "sprintDuration", "type": "number", "default": 25, "label": "Sprint duration (min)" },
-    {
-      "key": "autoSnapshotInterval",
-      "type": "number",
-      "default": 0,
-      "label": "Auto-snapshot interval (min, 0=off)"
-    },
+    { "key": "autoSnapshotInterval", "type": "number", "default": 0, "label": "Auto-snapshot interval (min, 0=off)" },
    { "key": "maxSnapshots", "type": "number", "default": 50, "label": "Max snapshots to keep" }
  ]
 }
@@ -29,8 +29,7 @@ function renderGoalsPanel(container, { engines, settings }) {
  const row = document.createElement('div');
  row.className = 'ws-stat-row';
  const label = document.createElement('span');
-  label.textContent =
-    progress.written.toLocaleString() + ' / ' + dailyGoal.toLocaleString() + ' words';
+  label.textContent = progress.written.toLocaleString() + ' / ' + dailyGoal.toLocaleString() + ' words';
  const pct = document.createElement('span');
  pct.className = 'ws-pct';
  pct.textContent = progress.pct + '%';
@@ -82,7 +81,7 @@ function renderGoalsPanel(container, { engines, settings }) {

  const chart = document.createElement('div');
  chart.className = 'ws-chart';
-  const maxWords = Math.max(...last30.map((d) => d.words), 1);
+  const maxWords = Math.max(...last30.map(d => d.words), 1);
  for (const day of last30) {
    const barEl = document.createElement('div');
    const height = Math.max(2, (day.words / maxWords) * 60);
@@ -69,8 +69,7 @@ function renderManuscriptPanel(container, { engines, editor, settings }) {
  const row = document.createElement('div');
  row.className = 'ws-stat-row';
  const label = document.createElement('span');
-  label.textContent =
-    stats.totalWords.toLocaleString() + ' / ' + stats.targetWords.toLocaleString() + ' words';
+  label.textContent = stats.totalWords.toLocaleString() + ' / ' + stats.targetWords.toLocaleString() + ' words';
  const pct = document.createElement('span');
  pct.className = 'ws-pct';
  pct.textContent = stats.pctComplete + '%';
@@ -42,7 +42,7 @@ function renderProofreadPanel(container, { events, editor }) {
        if (result && result.issues) {
          renderIssues(issuesList, result.issues);
        }
-      },
+      }
    });
  });
 }
@@ -80,10 +80,7 @@ function renderIssues(container, issues) {

    const actions = document.createElement('div');
    actions.className = 'ws-issue-actions';
-    for (const [, label] of [
-      ['accept', 'Accept'],
-      ['dismiss', 'Dismiss'],
-    ]) {
+    for (const [action, label] of [['accept', 'Accept'], ['dismiss', 'Dismiss']]) {
      const actionBtn = document.createElement('button');
      actionBtn.className = 'ws-btn ws-btn-sm';
      actionBtn.textContent = label;
@@ -45,11 +45,7 @@ function renderSnapshotsPanel(container, { engines, editor }) {

    const actions = document.createElement('div');
    actions.className = 'ws-snapshot-actions';
-    for (const [action, text, cls] of [
-      ['restore', 'Restore', ''],
-      ['diff', 'Diff', ''],
-      ['delete', 'Delete', 'ws-btn-danger'],
-    ]) {
+    for (const [action, text, cls] of [['restore', 'Restore', ''], ['diff', 'Diff', ''], ['delete', 'Delete', 'ws-btn-danger']]) {
      const actionBtn = document.createElement('button');
      actionBtn.className = 'ws-btn ws-btn-sm' + (cls ? ' ' + cls : '');
      actionBtn.textContent = text;
@@ -12,7 +12,7 @@ class ProjectManager {
      type: opts.type || 'manuscript',
      target: { words: opts.targetWords || 0, deadline: opts.deadline || null },
      chapters: [],
-      metadata: opts.metadata || {},
+      metadata: opts.metadata || {}
    };
    this.fs.writeFile(dir + '/.project.json', JSON.stringify(project, null, 2));
    return project;
@@ -66,7 +66,7 @@ class ProjectManager {
      totalWords,
      chapterCount: project.chapters.length,
      targetWords: target,
-      pctComplete: target > 0 ? Math.min(100, Math.round((totalWords / target) * 100)) : 0,
+      pctComplete: target > 0 ? Math.min(100, Math.round((totalWords / target) * 100)) : 0
    };
  }
 }
@@ -24,7 +24,7 @@ class SnapshotManager {
      timestamp: new Date().toISOString(),
      content,
      wordCount: content.split(/\s+/).filter(Boolean).length,
-      label,
+      label
    };
    snaps.unshift(snap);
    this._saveAll(snaps);
@@ -36,7 +36,7 @@ class SnapshotManager {
  }

  getById(id) {
-    return this._getAll().find((s) => s.id === id) || null;
+    return this._getAll().find(s => s.id === id) || null;
  }

  restore(id) {
@@ -46,7 +46,7 @@ class SnapshotManager {
  }

  delete(id) {
-    const snaps = this._getAll().filter((s) => s.id !== id);
+    const snaps = this._getAll().filter(s => s.id !== id);
    this._saveAll(snaps);
  }

@@ -59,12 +59,8 @@ class SnapshotManager {
    const newSet = new Set(newLines);
    let added = 0;
    let removed = 0;
-    for (const line of newLines) {
-      if (!oldSet.has(line)) added++;
-    }
-    for (const line of oldLines) {
-      if (!newSet.has(line)) removed++;
-    }
+    for (const line of newLines) { if (!oldSet.has(line)) added++; }
+    for (const line of oldLines) { if (!newSet.has(line)) removed++; }
    return { added, removed };
  }

@@ -40,9 +40,7 @@ class SprintEngine {
    }
  }

-  isActive() {
-    return this._active;
-  }
+  isActive() { return this._active; }

  getRemaining() {
    if (!this._active) return 0;
@@ -12,11 +12,10 @@ class PluginContext {
   * @param {object} deps.exportHooks - { preHooks: [], postHooks: [] }
   */
  constructor(deps) {
-    const { pluginId, sidebar, commands, statusBar, eventBus, settings, editor, ipc, exportHooks } =
-      deps;
+    const { pluginId, sidebar, commands, statusBar, eventBus, settings, editor, ipc, exportHooks } = deps;

    this.sidebar = {
-      registerPanel: (id, opts) => sidebar.registerPanel(`${pluginId}:${id}`, opts),
+      registerPanel: (id, opts) => sidebar.registerPanel(`${pluginId}:${id}`, opts)
    };

    this.commands = {
@@ -29,45 +28,41 @@ class PluginContext {
          }
        };
        commands.register(`${pluginId}:${id}`, label, safeHandler, shortcut);
-      },
+      }
    };

    this.statusBar = {
-      registerIndicator: (id, opts) => statusBar.registerIndicator(`${pluginId}:${id}`, opts),
+      registerIndicator: (id, opts) => statusBar.registerIndicator(`${pluginId}:${id}`, opts)
    };

    this.settings = {
      get: (key) => settings.get(`plugins.${pluginId}.${key}`),
      set: (key, value) => settings.set(`plugins.${pluginId}.${key}`, value),
-      onChanged: (key, cb) => settings.onChanged(`plugins.${pluginId}.${key}`, cb),
+      onChanged: (key, cb) => settings.onChanged(`plugins.${pluginId}.${key}`, cb)
    };

    this.editor = {
      getContent: () => editor.getContent(),
      getSelection: () => editor.getSelection(),
      insertAtCursor: (text) => editor.insertAtCursor(text),
-      onContentChanged: (cb) => editor.onContentChanged(cb),
+      onContentChanged: (cb) => editor.onContentChanged(cb)
    };

    this.events = {
      on: (event, handler) => eventBus.on(event, handler),
      off: (event, handler) => eventBus.off(event, handler),
      emit: (event, payload) => eventBus.emit(event, payload),
-      hasHandler: (event) => eventBus.hasHandler(event),
+      hasHandler: (event) => eventBus.hasHandler(event)
    };

    this.ipc = {
      invoke: (channel, ...args) => ipc.invoke(channel, ...args),
-      on: (channel, handler) => ipc.on(channel, handler),
+      on: (channel, handler) => ipc.on(channel, handler)
    };

    this.exports = {
-      registerPreHook: (handler) => {
-        if (exportHooks) exportHooks.preHooks.push(handler);
-      },
-      registerPostHook: (handler) => {
-        if (exportHooks) exportHooks.postHooks.push(handler);
-      },
+      registerPreHook: (handler) => { if (exportHooks) exportHooks.preHooks.push(handler); },
+      registerPostHook: (handler) => { if (exportHooks) exportHooks.postHooks.push(handler); }
    };
  }
 }
@@ -35,10 +35,7 @@ class PluginLoader {
              const loaded = require(indexPath);
              PluginClass = loaded.Plugin || loaded.default || null;
            } catch (err) {
-              console.error(
-                `[PluginLoader] Failed to load index.js for "${manifest.id}":`,
-                err.message
-              );
+              console.error(`[PluginLoader] Failed to load index.js for "${manifest.id}":`, err.message);
              continue;
            }
          }
@@ -49,7 +46,7 @@ class PluginLoader {
            description: manifest.description,
            manifest,
            PluginClass,
-            dir: pluginDir,
+            dir: pluginDir
          });
          this.loadedIds.add(manifest.id);
        } catch (err) {
@@ -32,7 +32,7 @@ class PluginRegistry {
      settings: this.deps.settings,
      editor: this.deps.editor,
      ipc: this.deps.ipc,
-      exportHooks: this.exportHooks,
+      exportHooks: this.exportHooks
    });

    try {
@@ -14,7 +14,7 @@ class SettingsStore {
    this.backend.set(key, value);
  }

-  onChanged(_key, _callback) {
+  onChanged(key, callback) {
    // Deferred: plugins read settings on init/activate for MVP.
    // Full change notification requires IPC watcher in main process.
  }
@@ -140,7 +140,7 @@ const ALLOWED_SEND_CHANNELS = [

  // Plugin settings
  'plugin-settings:get',
-  'plugin-settings:set',
+  'plugin-settings:set'
 ];

 const ALLOWED_RECEIVE_CHANNELS = [
@@ -237,7 +237,7 @@ const ALLOWED_RECEIVE_CHANNELS = [
  'load-template-menu',
  'toggle-command-palette',
  'toggle-sidebar-panel',
-  'toggle-bottom-panel',
+  'toggle-bottom-panel'
 ];

 /**
@@ -344,23 +344,23 @@ contextBridge.exposeInMainWorld('electronAPI', {
    exists: (filePath) => ipcRenderer.invoke('path-exists', filePath),
    isDirectory: (filePath) => ipcRenderer.invoke('is-directory', filePath),
    copy: (source, destination) => ipcRenderer.invoke('copy-path', { source, destination }),
-    move: (source, destination) => ipcRenderer.invoke('move-path', { source, destination }),
+    move: (source, destination) => ipcRenderer.invoke('move-path', { source, destination })
  },

  // Theme Operations
  theme: {
-    get: () => ipcRenderer.send('get-theme'),
+    get: () => ipcRenderer.send('get-theme')
  },

  // Print Operations
  print: {
-    doPrint: (options) => ipcRenderer.send('do-print', options),
+    doPrint: (options) => ipcRenderer.send('do-print', options)
  },

  // Export Operations
  export: {
    withOptions: (format, options) => ipcRenderer.send('export-with-options', { format, options }),
-    spreadsheet: (content, format) => ipcRenderer.send('export-spreadsheet', { content, format }),
+    spreadsheet: (content, format) => ipcRenderer.send('export-spreadsheet', { content, format })
  },

  // Batch Conversion
@@ -368,7 +368,7 @@ contextBridge.exposeInMainWorld('electronAPI', {
    convert: (inputFolder, outputFolder, format, options) => {
      ipcRenderer.send('batch-convert', { inputFolder, outputFolder, format, options });
    },
-    selectFolder: (type) => ipcRenderer.send('select-folder', type),
+    selectFolder: (type) => ipcRenderer.send('select-folder', type)
  },

  // Universal Converter
@@ -377,14 +377,8 @@ contextBridge.exposeInMainWorld('electronAPI', {
      ipcRenderer.send('universal-convert', { tool, fromFormat, toFormat, filePath });
    },
    convertBatch: (tool, fromFormat, toFormat, inputFolder, outputFolder) => {
-      ipcRenderer.send('universal-convert-batch', {
-        tool,
-        fromFormat,
-        toFormat,
-        inputFolder,
-        outputFolder,
-      });
-    },
+      ipcRenderer.send('universal-convert-batch', { tool, fromFormat, toFormat, inputFolder, outputFolder });
+    }
  },

  // Header/Footer Operations
@@ -392,23 +386,22 @@ contextBridge.exposeInMainWorld('electronAPI', {
    getSettings: () => ipcRenderer.send('get-header-footer-settings'),
    saveSettings: (settings) => ipcRenderer.send('save-header-footer-settings', settings),
    browseLogo: (position) => ipcRenderer.send('browse-header-footer-logo', position),
-    saveLogo: (position, filePath) =>
-      ipcRenderer.send('save-header-footer-logo', { position, filePath }),
-    clearLogo: (position) => ipcRenderer.send('clear-header-footer-logo', position),
+    saveLogo: (position, filePath) => ipcRenderer.send('save-header-footer-logo', { position, filePath }),
+    clearLogo: (position) => ipcRenderer.send('clear-header-footer-logo', position)
  },

  // Page Settings
  page: {
    getSettings: () => ipcRenderer.send('get-page-settings'),
    updateSettings: (settings) => ipcRenderer.send('update-page-settings', settings),
-    setCustomStartPage: (pageNumber) => ipcRenderer.send('set-custom-start-page', pageNumber),
+    setCustomStartPage: (pageNumber) => ipcRenderer.send('set-custom-start-page', pageNumber)
  },

  // PDF Operations
  pdf: {
    processOperation: (data) => ipcRenderer.send('process-pdf-operation', data),
    getPageCount: (filePath) => ipcRenderer.send('get-pdf-page-count', filePath),
-    selectFolder: (inputId) => ipcRenderer.send('select-pdf-folder', inputId),
+    selectFolder: (inputId) => ipcRenderer.send('select-pdf-folder', inputId)
  },

  // Image Converter Operations
@@ -417,7 +410,7 @@ contextBridge.exposeInMainWorld('electronAPI', {
    batchConvert: (data) => ipcRenderer.send('image-batch-convert', data),
    resize: (data) => ipcRenderer.send('image-resize', data),
    compress: (data) => ipcRenderer.send('image-compress', data),
-    rotate: (data) => ipcRenderer.send('image-rotate', data),
+    rotate: (data) => ipcRenderer.send('image-rotate', data)
  },

  // Audio Converter Operations
@@ -426,7 +419,7 @@ contextBridge.exposeInMainWorld('electronAPI', {
    batchConvert: (data) => ipcRenderer.send('audio-batch-convert', data),
    extract: (data) => ipcRenderer.send('audio-extract', data),
    trim: (data) => ipcRenderer.send('audio-trim', data),
-    merge: (data) => ipcRenderer.send('audio-merge', data),
+    merge: (data) => ipcRenderer.send('audio-merge', data)
  },

  // Video Converter Operations
@@ -436,16 +429,16 @@ contextBridge.exposeInMainWorld('electronAPI', {
    compress: (data) => ipcRenderer.send('video-compress', data),
    trim: (data) => ipcRenderer.send('video-trim', data),
    extractFrames: (data) => ipcRenderer.send('video-frames', data),
-    toGif: (data) => ipcRenderer.send('video-gif', data),
+    toGif: (data) => ipcRenderer.send('video-gif', data)
  },

  // Generator Windows
  generators: {
    openAscii: () => ipcRenderer.send('open-ascii-generator'),
-    openTable: () => ipcRenderer.send('open-table-generator'),
+    openTable: () => ipcRenderer.send('open-table-generator')
  },

-  getAppVersion: () => ipcRenderer.invoke('get-app-version'),
+  getAppVersion: () => ipcRenderer.invoke('get-app-version')
 });

 // Log successful preload initialization
@@ -1,85 +1,85 @@
 class PrintPreview {
-  constructor() {
-    this.overlay = document.getElementById('print-preview-overlay');
-    this.modal = window.modals?.printPreviewModal;
-    this._lastContent = '';
-    this.setupEventListeners();
-  }
-
-  open(htmlContent) {
-    this._lastContent = htmlContent;
-    if (this.modal) {
-      this.modal.open();
-    } else {
-      this.overlay.classList.remove('hidden');
+    constructor() {
+        this.overlay = document.getElementById('print-preview-overlay');
+        this.modal = window.modals?.printPreviewModal;
+        this._lastContent = '';
+        this.setupEventListeners();
    }
-    this.updatePreview(htmlContent);
-    this.updateScaleLabel();
-  }

-  close() {
-    if (this.modal) {
-      this.modal.close();
-    } else {
-      this.overlay.classList.add('hidden');
+    open(htmlContent) {
+        this._lastContent = htmlContent;
+        if (this.modal) {
+            this.modal.open();
+        } else {
+            this.overlay.classList.remove('hidden');
+        }
+        this.updatePreview(htmlContent);
+        this.updateScaleLabel();
    }
-  }

-  setupEventListeners() {
-    document.getElementById('print-preview-close')?.addEventListener('click', () => this.close());
-    document.getElementById('print-cancel')?.addEventListener('click', () => this.close());
-    document.getElementById('print-execute')?.addEventListener('click', () => this.executePrint());
+    close() {
+        if (this.modal) {
+            this.modal.close();
+        } else {
+            this.overlay.classList.add('hidden');
+        }
+    }

-    // Update preview on option changes
-    ['print-paper-size', 'print-orientation', 'print-margins'].forEach((id) => {
-      document.getElementById(id)?.addEventListener('change', () => this.refreshPreview());
-    });
+    setupEventListeners() {
+        document.getElementById('print-preview-close')?.addEventListener('click', () => this.close());
+        document.getElementById('print-cancel')?.addEventListener('click', () => this.close());
+        document.getElementById('print-execute')?.addEventListener('click', () => this.executePrint());

-    // Scale slider
-    const scaleSlider = document.getElementById('print-scale');
-    scaleSlider?.addEventListener('input', () => this.updateScaleLabel());
+        // Update preview on option changes
+        ['print-paper-size', 'print-orientation', 'print-margins'].forEach(id => {
+            document.getElementById(id)?.addEventListener('change', () => this.refreshPreview());
+        });

-    // Page range toggle
-    document.getElementById('print-pages')?.addEventListener('change', (e) => {
-      const rangeInput = document.getElementById('print-page-range');
-      if (rangeInput) {
-        rangeInput.classList.toggle('hidden', e.target.value !== 'custom');
-      }
-    });
+        // Scale slider
+        const scaleSlider = document.getElementById('print-scale');
+        scaleSlider?.addEventListener('input', () => this.updateScaleLabel());

-    // Note: Backdrop click and Escape key are now handled by ModalManager
-  }
+        // Page range toggle
+        document.getElementById('print-pages')?.addEventListener('change', (e) => {
+            const rangeInput = document.getElementById('print-page-range');
+            if (rangeInput) {
+                rangeInput.classList.toggle('hidden', e.target.value !== 'custom');
+            }
+        });

-  updateScaleLabel() {
-    const scale = document.getElementById('print-scale')?.value || 100;
-    const label = document.getElementById('print-scale-value');
-    if (label) label.textContent = `${scale}%`;
-  }
+        // Note: Backdrop click and Escape key are now handled by ModalManager
+    }

-  updatePreview(htmlContent) {
-    const frame = document.getElementById('print-preview-frame');
-    if (!frame) return;
+    updateScaleLabel() {
+        const scale = document.getElementById('print-scale')?.value || 100;
+        const label = document.getElementById('print-scale-value');
+        if (label) label.textContent = `${scale}%`;
+    }

-    this._lastContent = htmlContent;
+    updatePreview(htmlContent) {
+        const frame = document.getElementById('print-preview-frame');
+        if (!frame) return;

-    const orientation = document.getElementById('print-orientation')?.value || 'portrait';
-    const paperSize = document.getElementById('print-paper-size')?.value || 'A4';
+        this._lastContent = htmlContent;

-    // Get dimensions for paper size
-    const sizes = {
-      A3: { width: '297mm', height: '420mm' },
-      A4: { width: '210mm', height: '297mm' },
-      A5: { width: '148mm', height: '210mm' },
-      Letter: { width: '8.5in', height: '11in' },
-      Legal: { width: '8.5in', height: '14in' },
-      Tabloid: { width: '11in', height: '17in' },
-    };
+        const orientation = document.getElementById('print-orientation')?.value || 'portrait';
+        const paperSize = document.getElementById('print-paper-size')?.value || 'A4';

-    const size = sizes[paperSize] || sizes['A4'];
-    const width = orientation === 'landscape' ? size.height : size.width;
-    const height = orientation === 'landscape' ? size.width : size.height;
+        // Get dimensions for paper size
+        const sizes = {
+            'A3': { width: '297mm', height: '420mm' },
+            'A4': { width: '210mm', height: '297mm' },
+            'A5': { width: '148mm', height: '210mm' },
+            'Letter': { width: '8.5in', height: '11in' },
+            'Legal': { width: '8.5in', height: '14in' },
+            'Tabloid': { width: '11in', height: '17in' },
+        };

-    const previewHtml = `
+        const size = sizes[paperSize] || sizes['A4'];
+        const width = orientation === 'landscape' ? size.height : size.width;
+        const height = orientation === 'landscape' ? size.width : size.height;
+
+        const previewHtml = `
            <!DOCTYPE html>
            <html>
            <head>
@@ -105,34 +105,34 @@ class PrintPreview {
            </html>
        `;

-    frame.srcdoc = previewHtml;
-  }
-
-  refreshPreview() {
-    if (this._lastContent) {
-      this.updatePreview(this._lastContent);
+        frame.srcdoc = previewHtml;
    }
-  }

-  getOptions() {
-    return {
-      paperSize: document.getElementById('print-paper-size')?.value || 'A4',
-      orientation: document.getElementById('print-orientation')?.value || 'portrait',
-      margins: document.getElementById('print-margins')?.value || 'default',
-      scale: parseInt(document.getElementById('print-scale')?.value || '100'),
-      headers: document.getElementById('print-headers')?.checked ?? true,
-      background: document.getElementById('print-background')?.checked ?? true,
-      pages: document.getElementById('print-pages')?.value || 'all',
-      pageRange: document.getElementById('print-page-range')?.value || '',
-    };
-  }
+    refreshPreview() {
+        if (this._lastContent) {
+            this.updatePreview(this._lastContent);
+        }
+    }

-  executePrint() {
-    const options = this.getOptions();
-    const { ipcRenderer } = require('electron');
-    ipcRenderer.send('do-print-with-options', options);
-    this.close();
-  }
+    getOptions() {
+        return {
+            paperSize: document.getElementById('print-paper-size')?.value || 'A4',
+            orientation: document.getElementById('print-orientation')?.value || 'portrait',
+            margins: document.getElementById('print-margins')?.value || 'default',
+            scale: parseInt(document.getElementById('print-scale')?.value || '100'),
+            headers: document.getElementById('print-headers')?.checked ?? true,
+            background: document.getElementById('print-background')?.checked ?? true,
+            pages: document.getElementById('print-pages')?.value || 'all',
+            pageRange: document.getElementById('print-page-range')?.value || '',
+        };
+    }
+
+    executePrint() {
+        const options = this.getOptions();
+        const { ipcRenderer } = require('electron');
+        ipcRenderer.send('do-print-with-options', options);
+        this.close();
+    }
 }

 module.exports = { PrintPreview };
@@ -0,0 +1,7 @@
+import { AppShell } from './components/layout/AppShell';
+
+function App() {
+  return <AppShell />;
+}
+
+export default App;
@@ -0,0 +1,80 @@
+import { useEffect, useRef } from 'react';
+import { EditorState, Compartment } from '@codemirror/state';
+import { EditorView, keymap, lineNumbers, highlightActiveLine, drawSelection } from '@codemirror/view';
+import { defaultKeymap, history, historyKeymap, indentWithTab } from '@codemirror/commands';
+import { markdown, markdownLanguage } from '@codemirror/lang-markdown';
+import { searchKeymap, highlightSelectionMatches } from '@codemirror/search';
+import { autocompletion, completionKeymap } from '@codemirror/autocomplete';
+import { oneDark } from '@codemirror/theme-one-dark';
+import { useTheme } from 'next-themes';
+import { lightTheme, lightHighlight } from './themes/light';
+import { useEditorStore } from '@/stores/editor-store';
+
+interface Props {
+  bufferId: string;
+  initialContent: string;
+  onChange?: (content: string) => void;
+  onCursorChange?: (line: number, column: number) => void;
+}
+
+export function CodeMirrorEditor({ bufferId, initialContent, onChange, onCursorChange }: Props) {
+  const ref = useRef<HTMLDivElement>(null);
+  const viewRef = useRef<EditorView | null>(null);
+  const themeCompartment = useRef(new Compartment());
+  const { resolvedTheme } = useTheme();
+  const updateContent = useEditorStore((s) => s.updateContent);
+  const setCursor = useEditorStore((s) => s.setCursor);
+
+  useEffect(() => {
+    if (!ref.current) return;
+    const state = EditorState.create({
+      doc: initialContent,
+      extensions: [
+        lineNumbers(),
+        highlightActiveLine(),
+        highlightSelectionMatches(),
+        history(),
+        drawSelection(),
+        markdown({ base: markdownLanguage, codeLanguages: [] }),
+        autocompletion(),
+        keymap.of([...defaultKeymap, ...historyKeymap, ...searchKeymap, ...completionKeymap, indentWithTab]),
+        themeCompartment.current.of(resolvedTheme === 'dark' ? [oneDark] : [lightTheme, lightHighlight]),
+        EditorView.lineWrapping,
+        EditorView.updateListener.of((v) => {
+          if (v.docChanged) {
+            const content = v.state.doc.toString();
+            updateContent(bufferId, content);
+            onChange?.(content);
+          }
+          if (v.selectionSet || v.docChanged) {
+            const head = v.state.selection.main.head;
+            const line = v.state.doc.lineAt(head);
+            const lineNo = line.number;
+            const col = head - line.from + 1;
+            setCursor(bufferId, lineNo, col);
+            onCursorChange?.(lineNo, col);
+          }
+        }),
+      ],
+    });
+    const view = new EditorView({ state, parent: ref.current });
+    viewRef.current = view;
+    return () => {
+      view.destroy();
+      viewRef.current = null;
+    };
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [bufferId]);
+
+  useEffect(() => {
+    const view = viewRef.current;
+    if (!view) return;
+    view.dispatch({
+      effects: themeCompartment.current.reconfigure(
+        resolvedTheme === 'dark' ? [oneDark] : [lightTheme, lightHighlight]
+      ),
+    });
+  }, [resolvedTheme]);
+
+  return <div ref={ref} className="h-full overflow-hidden" />;
+}
@@ -0,0 +1,25 @@
+import { CodeMirrorEditor } from './CodeMirrorEditor';
+import { useEditorStore } from '@/stores/editor-store';
+
+export function EditorPane() {
+  const { buffers, activeId } = useEditorStore();
+  const buf = activeId ? buffers.get(activeId) : null;
+
+  if (!buf) {
+    return (
+      <div className="flex h-full items-center justify-center bg-background text-muted-foreground">
+        <p>No file open. Use File → Open to start.</p>
+      </div>
+    );
+  }
+
+  return (
+    <div className="h-full">
+      <CodeMirrorEditor
+        key={buf.id}
+        bufferId={buf.id}
+        initialContent={buf.content}
+      />
+    </div>
+  );
+}
@@ -0,0 +1,55 @@
+import { EditorView } from '@codemirror/view';
+import { HighlightStyle, syntaxHighlighting } from '@codemirror/language';
+import { tags as t } from '@lezer/highlight';
+
+const colors = {
+  background: '#ffffff',
+  foreground: '#0d0b09',
+  cursor: '#e5461f',
+  selection: 'rgba(229, 70, 31, 0.15)',
+  gutterBackground: '#fafbfc',
+  gutterForeground: '#7a7878',
+  lineHighlight: 'rgba(0, 0, 0, 0.04)',
+};
+
+export const lightTheme = EditorView.theme(
+  {
+    '&': {
+      backgroundColor: colors.background,
+      color: colors.foreground,
+      height: '100%',
+    },
+    '.cm-content': {
+      caretColor: colors.cursor,
+      fontFamily: 'JetBrains Mono, Fira Code, monospace',
+      fontSize: '13.5px',
+    },
+    '.cm-cursor, .cm-dropCursor': { borderLeftColor: colors.cursor },
+    '&.cm-focused .cm-selectionBackground, .cm-selectionBackground, ::selection': {
+      backgroundColor: colors.selection,
+    },
+    '.cm-gutters': {
+      backgroundColor: colors.gutterBackground,
+      color: colors.gutterForeground,
+      border: 'none',
+    },
+    '.cm-activeLine': { backgroundColor: colors.lineHighlight },
+    '.cm-activeLineGutter': { backgroundColor: 'transparent', color: '#e5461f' },
+  },
+  { dark: false }
+);
+
+const highlightStyle = HighlightStyle.define([
+  { tag: t.heading1, color: '#0d0b09', fontWeight: '700' },
+  { tag: t.heading2, color: '#0d0b09', fontWeight: '700' },
+  { tag: t.heading3, color: '#464646', fontWeight: '600' },
+  { tag: t.link, color: '#e5461f', textDecoration: 'underline' },
+  { tag: t.url, color: '#e5461f' },
+  { tag: t.emphasis, fontStyle: 'italic' },
+  { tag: t.strong, fontWeight: '700' },
+  { tag: t.monospace, color: '#c93a18' },
+  { tag: t.list, color: '#0ea5e9' },
+  { tag: t.quote, color: '#7a7878', fontStyle: 'italic' },
+]);
+
+export const lightHighlight = syntaxHighlighting(highlightStyle);
@@ -0,0 +1,41 @@
+import { PanelLeft, PanelRight } from 'lucide-react';
+import { Button } from '@/components/ui/button';
+import { ThemeToggle } from '@/components/theme-toggle';
+import { useAppStore } from '@/stores/app-store';
+
+export function AppHeader() {
+  const { sidebarVisible, previewVisible, toggleSidebar, togglePreview } = useAppStore();
+
+  return (
+    <header className="flex h-14 items-center justify-between border-b border-border bg-card/40 px-4 backdrop-blur">
+      <div className="flex items-center gap-3">
+        <div
+          className="h-7 w-7 rounded-md bg-gradient-to-br from-brand to-brand-dark shadow-[var(--shadow-glow-brand)]"
+          aria-label="MarkdownConverter logo"
+        />
+        <h1 className="font-display text-lg font-bold tracking-tight">MarkdownConverter</h1>
+      </div>
+      <div className="flex items-center gap-1">
+        <Button
+          variant="ghost"
+          size="icon"
+          aria-label="Toggle sidebar"
+          aria-pressed={sidebarVisible}
+          onClick={toggleSidebar}
+        >
+          <PanelLeft className="h-4 w-4" />
+        </Button>
+        <Button
+          variant="ghost"
+          size="icon"
+          aria-label="Toggle preview"
+          aria-pressed={previewVisible}
+          onClick={togglePreview}
+        >
+          <PanelRight className="h-4 w-4" />
+        </Button>
+        <ThemeToggle />
+      </div>
+    </header>
+  );
+}
@@ -0,0 +1,52 @@
+import { AppHeader } from './AppHeader';
+import { TabBar } from './TabBar';
+import { Toolbar } from './Toolbar';
+import { Breadcrumb } from './Breadcrumb';
+import { StatusBar } from './StatusBar';
+import { EditorPane } from '@/components/editor/EditorPane';
+import { useAppStore } from '@/stores/app-store';
+import { ResizablePanelGroup, ResizablePanel, ResizableHandle } from '@/components/ui/resizable';
+
+export function AppShell() {
+  const { sidebarVisible, previewVisible, paneSizes, setPaneSizes } = useAppStore();
+
+  return (
+    <div className="flex h-screen flex-col bg-background text-foreground">
+      <AppHeader />
+      <TabBar />
+      <Toolbar />
+      <Breadcrumb />
+      <main className="flex-1 overflow-hidden">
+        <ResizablePanelGroup
+          direction="horizontal"
+          onLayout={(sizes) => setPaneSizes({ sidebar: sizes[0], editor: sizes[1], preview: sizes[2] })}
+        >
+          {sidebarVisible && (
+            <>
+              <ResizablePanel defaultSize={paneSizes.sidebar} minSize={15} maxSize={40}>
+                <aside className="h-full border-r border-border bg-card/10 p-3 text-sm text-muted-foreground">
+                  File tree placeholder
+                </aside>
+              </ResizablePanel>
+              <ResizableHandle />
+            </>
+          )}
+          <ResizablePanel defaultSize={previewVisible ? paneSizes.editor : 100} minSize={20}>
+            <EditorPane />
+          </ResizablePanel>
+          {previewVisible && (
+            <>
+              <ResizableHandle />
+              <ResizablePanel defaultSize={paneSizes.preview} minSize={20}>
+                <section className="h-full border-l border-border bg-card/10 p-4 text-sm text-muted-foreground">
+                  Preview placeholder
+                </section>
+              </ResizablePanel>
+            </>
+          )}
+        </ResizablePanelGroup>
+      </main>
+      <StatusBar />
+    </div>
+  );
+}
@@ -0,0 +1,7 @@
+export function Breadcrumb() {
+  return (
+    <nav aria-label="File path" className="flex h-7 items-center border-b border-border bg-card/10 px-3 text-xs text-muted-foreground">
+      <span>No file selected</span>
+    </nav>
+  );
+}
@@ -0,0 +1,25 @@
+import { useEditorStore } from '@/stores/editor-store';
+
+function countWords(text: string): number {
+  return text.trim().length === 0 ? 0 : text.trim().split(/\s+/).length;
+}
+
+export function StatusBar() {
+  const { buffers, activeId } = useEditorStore();
+  const buf = activeId ? buffers.get(activeId) : null;
+  const wordCount = buf ? countWords(buf.content) : 0;
+  const cursor = buf?.cursor ?? { line: 1, column: 1 };
+
+  return (
+    <footer className="flex h-7 items-center justify-between border-t border-border bg-card/20 px-3 text-xs text-muted-foreground">
+      <div className="flex items-center gap-4">
+        <span>{wordCount} words</span>
+        <span>UTF-8</span>
+      </div>
+      <div className="flex items-center gap-4">
+        <span>Ln {cursor.line}, Col {cursor.column}</span>
+        <span>Markdown</span>
+      </div>
+    </footer>
+  );
+}
@@ -0,0 +1,7 @@
+export function TabBar() {
+  return (
+    <div className="flex h-9 items-center border-b border-border bg-card/20 px-3 text-xs text-muted-foreground">
+      <span>No files open</span>
+    </div>
+  );
+}
@@ -0,0 +1,15 @@
+import { Bold, Italic, List, ListOrdered, Code, Link as LinkIcon } from 'lucide-react';
+import { Button } from '@/components/ui/button';
+
+export function Toolbar() {
+  return (
+    <div className="flex h-10 items-center gap-1 border-b border-border bg-card/10 px-3">
+      <Button variant="ghost" size="icon" aria-label="Bold"><Bold className="h-4 w-4" /></Button>
+      <Button variant="ghost" size="icon" aria-label="Italic"><Italic className="h-4 w-4" /></Button>
+      <Button variant="ghost" size="icon" aria-label="Unordered list"><List className="h-4 w-4" /></Button>
+      <Button variant="ghost" size="icon" aria-label="Ordered list"><ListOrdered className="h-4 w-4" /></Button>
+      <Button variant="ghost" size="icon" aria-label="Code"><Code className="h-4 w-4" /></Button>
+      <Button variant="ghost" size="icon" aria-label="Link"><LinkIcon className="h-4 w-4" /></Button>
+    </div>
+  );
+}
@@ -0,0 +1,6 @@
+import { ThemeProvider as NextThemesProvider } from 'next-themes';
+import type { ComponentProps } from 'react';
+
+export function ThemeProvider({ children, ...props }: ComponentProps<typeof NextThemesProvider>) {
+  return <NextThemesProvider {...props}>{children}</NextThemesProvider>;
+}
@@ -0,0 +1,30 @@
+import { useTheme } from 'next-themes';
+import { Moon, Sun } from 'lucide-react';
+import { Button } from '@/components/ui/button';
+import { useEffect, useState } from 'react';
+
+export function ThemeToggle() {
+  const { resolvedTheme, setTheme } = useTheme();
+  const [mounted, setMounted] = useState(false);
+  useEffect(() => setMounted(true), []);
+
+  if (!mounted) {
+    return (
+      <Button variant="ghost" size="icon" aria-label="Toggle theme" className="opacity-0">
+        <Sun className="h-4 w-4" />
+      </Button>
+    );
+  }
+
+  const isDark = resolvedTheme === 'dark';
+  return (
+    <Button
+      variant="ghost"
+      size="icon"
+      aria-label="Toggle theme"
+      onClick={() => setTheme(isDark ? 'light' : 'dark')}
+    >
+      {isDark ? <Sun className="h-4 w-4" /> : <Moon className="h-4 w-4" />}
+    </Button>
+  );
+}
@@ -0,0 +1,57 @@
+import * as React from "react"
+import { Slot } from "@radix-ui/react-slot"
+import { cva, type VariantProps } from "class-variance-authority"
+
+import { cn } from "@/lib/utils"
+
+const buttonVariants = cva(
+  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0",
+  {
+    variants: {
+      variant: {
+        default:
+          "bg-primary text-primary-foreground shadow hover:bg-primary/90",
+        destructive:
+          "bg-destructive text-destructive-foreground shadow-sm hover:bg-destructive/90",
+        outline:
+          "border border-input bg-background shadow-sm hover:bg-accent hover:text-accent-foreground",
+        secondary:
+          "bg-secondary text-secondary-foreground shadow-sm hover:bg-secondary/80",
+        ghost: "hover:bg-accent hover:text-accent-foreground",
+        link: "text-primary underline-offset-4 hover:underline",
+      },
+      size: {
+        default: "h-9 px-4 py-2",
+        sm: "h-8 rounded-md px-3 text-xs",
+        lg: "h-10 rounded-md px-8",
+        icon: "h-9 w-9",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+      size: "default",
+    },
+  }
+)
+
+export interface ButtonProps
+  extends React.ButtonHTMLAttributes<HTMLButtonElement>,
+    VariantProps<typeof buttonVariants> {
+  asChild?: boolean
+}
+
+const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
+  ({ className, variant, size, asChild = false, ...props }, ref) => {
+    const Comp = asChild ? Slot : "button"
+    return (
+      <Comp
+        className={cn(buttonVariants({ variant, size, className }))}
+        ref={ref}
+        {...props}
+      />
+    )
+  }
+)
+Button.displayName = "Button"
+
+export { Button, buttonVariants }
@@ -0,0 +1,62 @@
+"use client"
+
+import * as React from "react"
+import { GripVertical } from "lucide-react"
+import * as ResizablePrimitive from "react-resizable-panels"
+
+import { cn } from "@/lib/utils"
+
+const ResizablePanelGroup = React.forwardRef<
+  React.ElementRef<typeof ResizablePrimitive.Group>,
+  React.ComponentPropsWithoutRef<typeof ResizablePrimitive.Group>
+>(({ className, ...props }, ref) => (
+  <ResizablePrimitive.Group
+    ref={ref}
+    className={cn(
+      "flex h-full w-full data-[panel-group-direction=vertical]:flex-col",
+      className
+    )}
+    {...props}
+  />
+))
+ResizablePanelGroup.displayName = "ResizablePanelGroup"
+
+const ResizablePanel = React.forwardRef<
+  React.ElementRef<typeof ResizablePrimitive.Panel>,
+  React.ComponentPropsWithoutRef<typeof ResizablePrimitive.Panel>
+>(({ className, ...props }, ref) => (
+  <ResizablePrimitive.Panel
+    ref={ref}
+    className={cn(
+      "h-full w-full overflow-hidden",
+      className
+    )}
+    {...props}
+  />
+))
+ResizablePanel.displayName = "ResizablePanel"
+
+const ResizableHandle = ({
+  withHandle,
+  className,
+  ...props
+}: React.ComponentPropsWithoutRef<typeof ResizablePrimitive.Separator> & {
+  withHandle?: boolean
+}) => (
+  <ResizablePrimitive.Separator
+    className={cn(
+      "relative flex w-px items-center justify-center bg-border after:absolute after:inset-y-0 after:left-1/2 after:w-1 after:-translate-x-1/2 focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring focus-visible:ring-offset-1 data-[panel-group-direction=vertical]:h-px data-[panel-group-direction=vertical]:w-full data-[panel-group-direction=vertical]:after:left-0 data-[panel-group-direction=vertical]:after:h-1 data-[panel-group-direction=vertical]:after:w-full data-[panel-group-direction=vertical]:after:-translate-y-1/2 data-[panel-group-direction=vertical]:after:translate-x-0 [&[data-panel-group-direction=vertical]>div]:rotate-90",
+      className
+    )}
+    {...props}
+  >
+    {withHandle && (
+      <div className="z-10 flex h-4 w-3 items-center justify-center rounded-sm border bg-border">
+        <GripVertical className="h-2.5 w-2.5" />
+      </div>
+    )}
+  </ResizablePrimitive.Separator>
+)
+ResizableHandle.displayName = "ResizableHandle"
+
+export { ResizablePanelGroup, ResizablePanel, ResizableHandle }
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob:; font-src 'self' data:; connect-src 'self';">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>MarkdownConverter</title>
+  <link rel="preconnect" href="https://fonts.googleapis.com">
+  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+  <link href="https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600;700&display=swap" rel="stylesheet">
+</head>
+<body class="font-sans antialiased">
+  <div id="root"></div>
+  <script type="module" src="./main.tsx"></script>
+</body>
+</html>
@@ -0,0 +1,94 @@
+import type {
+  IpcResult,
+  FileResult,
+  FileEntry,
+  PdfOptions,
+  DocxOptions,
+  HtmlOptions,
+  ExportResult,
+  BatchItem,
+  BatchOptions,
+  BatchResult,
+} from '@/types/ipc';
+
+type ChannelMissing = { code: 'CHANNEL_MISSING'; message: string };
+
+function wrap<T>(fn: () => Promise<T>): Promise<IpcResult<T | ChannelMissing>> {
+  if (typeof window === 'undefined' || !window.electronAPI) {
+    return Promise.resolve({
+      ok: false,
+      error: { code: 'NO_BRIDGE', message: 'window.electronAPI is unavailable' },
+    });
+  }
+  return fn().then(
+    (data) => ({ ok: true as const, data }),
+    (err: Error) => ({
+      ok: false as const,
+      error: { code: err.name || 'IPC_ERROR', message: err.message || String(err) },
+    }),
+  );
+}
+
+function safeCall<T extends (...args: any[]) => Promise<any>>(
+  channel: string,
+  method: string,
+  ...args: Parameters<T>
+): Promise<IpcResult<Awaited<ReturnType<T>> | ChannelMissing>> {
+  if (typeof window === 'undefined' || !window.electronAPI) {
+    return Promise.resolve({
+      ok: false,
+      error: { code: 'NO_BRIDGE', message: 'window.electronAPI is unavailable' },
+    });
+  }
+  const target = (window.electronAPI as any)[channel]?.[method];
+  if (!target) {
+    return Promise.resolve({
+      ok: false,
+      error: { code: 'CHANNEL_MISSING', message: `Missing channel: ${channel}.${method}` },
+    });
+  }
+  if (typeof target !== 'function') {
+    return Promise.resolve({
+      ok: false,
+      error: { code: 'CHANNEL_MISSING', message: `Not a function: ${channel}.${method}` },
+    });
+  }
+  return wrap(() => target(...args));
+}
+
+export const ipc = {
+  file: {
+    open: (): Promise<IpcResult<FileResult | ChannelMissing>> =>
+      safeCall('file', 'open'),
+    read: (path: string): Promise<IpcResult<string | ChannelMissing>> =>
+      safeCall('file', 'read', path),
+    write: (path: string, content: string): Promise<IpcResult<void | ChannelMissing>> =>
+      safeCall('file', 'write', path, content),
+    list: (dir: string): Promise<IpcResult<FileEntry[] | ChannelMissing>> =>
+      safeCall('file', 'list', dir),
+    onChange: (cb: (path: string) => void): (() => void) => {
+      if (typeof window === 'undefined' || !window.electronAPI?.file?.onChange) {
+        return () => {};
+      }
+      return window.electronAPI.file.onChange(cb);
+    },
+  },
+  export: {
+    pdf: (opts: PdfOptions): Promise<IpcResult<ExportResult | ChannelMissing>> =>
+      safeCall('export', 'pdf', opts),
+    docx: (opts: DocxOptions): Promise<IpcResult<ExportResult | ChannelMissing>> =>
+      safeCall('export', 'docx', opts),
+    html: (opts: HtmlOptions): Promise<IpcResult<ExportResult | ChannelMissing>> =>
+      safeCall('export', 'html', opts),
+    batch: (items: BatchItem[], opts: BatchOptions): Promise<IpcResult<BatchResult | ChannelMissing>> =>
+      safeCall('export', 'batch', items, opts),
+  },
+  app: {
+    getVersion: (): Promise<IpcResult<string | ChannelMissing>> =>
+      safeCall('app', 'getVersion'),
+    openExternal: (url: string): Promise<IpcResult<void | ChannelMissing>> =>
+      safeCall('app', 'openExternal', url),
+    showItemInFolder: (path: string): Promise<IpcResult<void | ChannelMissing>> =>
+      safeCall('app', 'showItemInFolder', path),
+  },
+};
@@ -0,0 +1,41 @@
+import type { Transition, Variants } from 'motion/react';
+
+export const fadeIn: Transition = {
+  duration: 0.2,
+  ease: 'easeOut',
+};
+
+export const slideInRight: Variants = {
+  x: '100%',
+  initial: { x: '100%', opacity: 0 },
+  animate: { x: 0, opacity: 1, transition: { duration: 0.3, ease: [0.16, 1, 0.3, 1] } },
+  exit: { x: '100%', opacity: 0, transition: { duration: 0.2, ease: 'easeIn' } },
+};
+
+export const modalPop: Variants = {
+  scale: 0.96,
+  opacity: 0,
+  initial: { scale: 0.96, opacity: 0 },
+  animate: { scale: 1, opacity: 1, transition: { duration: 0.2, ease: 'easeOut' } },
+  exit: { scale: 0.96, opacity: 0, transition: { duration: 0.15, ease: 'easeIn' } },
+};
+
+export const toastSpring: Transition = {
+  type: 'spring',
+  stiffness: 300,
+  damping: 30,
+};
+
+export const sidebarToggle: Transition = {
+  duration: 0.25,
+  ease: 'easeInOut',
+  width: {
+    duration: 0.25,
+    ease: 'easeInOut',
+  },
+};
+
+export const tabSwitch: Transition = {
+  duration: 0.2,
+  ease: 'easeOut',
+};
@@ -0,0 +1,6 @@
+import { clsx, type ClassValue } from 'clsx';
+import { twMerge } from 'tailwind-merge';
+
+export function cn(...inputs: ClassValue[]): string {
+  return twMerge(clsx(inputs));
+}
@@ -0,0 +1,13 @@
+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import App from './App';
+import { ThemeProvider } from './components/theme-provider';
+import './styles/globals.css';
+
+ReactDOM.createRoot(document.getElementById('root')!).render(
+  <React.StrictMode>
+    <ThemeProvider defaultTheme="dark" attribute="class" enableSystem>
+      <App />
+    </ThemeProvider>
+  </React.StrictMode>
+);
@@ -0,0 +1,35 @@
+import { create } from 'zustand';
+import { persist } from 'zustand/middleware';
+
+export interface PaneSizes {
+  sidebar: number;
+  editor: number;
+  preview: number;
+}
+
+interface AppState {
+  sidebarVisible: boolean;
+  previewVisible: boolean;
+  zenMode: boolean;
+  paneSizes: PaneSizes;
+  toggleSidebar: () => void;
+  togglePreview: () => void;
+  setZenMode: (value: boolean) => void;
+  setPaneSizes: (sizes: PaneSizes) => void;
+}
+
+export const useAppStore = create<AppState>()(
+  persist(
+    (set) => ({
+      sidebarVisible: true,
+      previewVisible: true,
+      zenMode: false,
+      paneSizes: { sidebar: 20, editor: 50, preview: 30 },
+      toggleSidebar: () => set((s) => ({ sidebarVisible: !s.sidebarVisible })),
+      togglePreview: () => set((s) => ({ previewVisible: !s.previewVisible })),
+      setZenMode: (value) => set({ zenMode: value }),
+      setPaneSizes: (sizes) => set({ paneSizes: sizes }),
+    }),
+    { name: 'mc-app-store' }
+  )
+);
@@ -0,0 +1,63 @@
+import { create } from 'zustand';
+import { immer } from 'zustand/middleware/immer';
+import { enableMapSet } from 'immer';
+
+enableMapSet();
+
+export interface Buffer {
+  id: string;
+  path: string;
+  content: string;
+  dirty: boolean;
+  cursor?: { line: number; column: number };
+}
+
+interface EditorState {
+  buffers: Map<string, Buffer>;
+  activeId: string | null;
+  openBuffer: (id: string, path: string, content: string) => void;
+  updateContent: (id: string, content: string) => void;
+  markSaved: (id: string) => void;
+  setCursor: (id: string, line: number, column: number) => void;
+  closeBuffer: (id: string) => void;
+  setActive: (id: string) => void;
+}
+
+export const useEditorStore = create<EditorState>()(
+  immer((set) => ({
+    buffers: new Map(),
+    activeId: null,
+    openBuffer: (id, path, content) =>
+      set((s) => {
+        s.buffers.set(id, { id, path, content, dirty: false });
+        s.activeId = id;
+      }),
+    updateContent: (id, content) =>
+      set((s) => {
+        const buf = s.buffers.get(id);
+        if (buf) {
+          buf.content = content;
+          buf.dirty = true;
+        }
+      }),
+    markSaved: (id) =>
+      set((s) => {
+        const buf = s.buffers.get(id);
+        if (buf) buf.dirty = false;
+      }),
+    setCursor: (id, line, column) =>
+      set((s) => {
+        const buf = s.buffers.get(id);
+        if (buf) buf.cursor = { line, column };
+      }),
+    closeBuffer: (id) =>
+      set((s) => {
+        s.buffers.delete(id);
+        if (s.activeId === id) s.activeId = null;
+      }),
+    setActive: (id) =>
+      set((s) => {
+        s.activeId = id;
+      }),
+  }))
+);
@@ -0,0 +1,98 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+@layer base {
+  :root {
+    --background: 0 0% 100%;
+    --foreground: 0 0% 9%;
+    --card: 0 0% 100%;
+    --card-foreground: 0 0% 9%;
+    --popover: 0 0% 100%;
+    --popover-foreground: 0 0% 9%;
+    --primary: 11 79% 51%;
+    --primary-foreground: 0 0% 100%;
+    --secondary: 0 0% 96%;
+    --secondary-foreground: 0 0% 9%;
+    --muted: 0 0% 96%;
+    --muted-foreground: 0 0% 45%;
+    --accent: 0 0% 96%;
+    --accent-foreground: 0 0% 9%;
+    --destructive: 0 84% 60%;
+    --destructive-foreground: 0 0% 100%;
+    --border: 0 0% 90%;
+    --input: 0 0% 90%;
+    --ring: 11 79% 51%;
+    --radius: 0.5rem;
+    --shadow-sm: 0 1px 2px rgba(13, 11, 9, 0.06);
+    --shadow-md: 0 4px 12px rgba(13, 11, 9, 0.08), 0 0 0 1px rgba(13, 11, 9, 0.04);
+    --shadow-lg: 0 12px 32px rgba(13, 11, 9, 0.12), 0 0 0 1px rgba(13, 11, 9, 0.06);
+    --shadow-glow-brand: 0 0 24px rgba(229, 70, 31, 0.25);
+    --glass-bg-light: rgba(255, 255, 255, 0.72);
+    --glass-bg-dark: rgba(13, 11, 9, 0.72);
+    --glass-border-light: rgba(255, 255, 255, 0.4);
+    --glass-border-dark: rgba(255, 255, 255, 0.08);
+  }
+
+  .dark {
+    --background: 30 14% 4%;
+    --foreground: 0 0% 98%;
+    --card: 30 14% 6%;
+    --card-foreground: 0 0% 98%;
+    --popover: 30 14% 6%;
+    --popover-foreground: 0 0% 98%;
+    --primary: 11 79% 51%;
+    --primary-foreground: 0 0% 100%;
+    --secondary: 30 6% 15%;
+    --secondary-foreground: 0 0% 98%;
+    --muted: 30 6% 15%;
+    --muted-foreground: 0 0% 63%;
+    --accent: 30 6% 15%;
+    --accent-foreground: 0 0% 98%;
+    --destructive: 0 62% 30%;
+    --destructive-foreground: 0 0% 100%;
+    --border: 30 6% 15%;
+    --input: 30 6% 15%;
+    --ring: 11 79% 51%;
+    --shadow-sm: 0 1px 2px rgba(13, 11, 9, 0.06);
+    --shadow-md: 0 4px 12px rgba(13, 11, 9, 0.08), 0 0 0 1px rgba(13, 11, 9, 0.04);
+    --shadow-lg: 0 12px 32px rgba(13, 11, 9, 0.12), 0 0 0 1px rgba(13, 11, 9, 0.06);
+    --shadow-glow-brand: 0 0 24px rgba(229, 70, 31, 0.25);
+    --glass-bg-light: rgba(255, 255, 255, 0.72);
+    --glass-bg-dark: rgba(13, 11, 9, 0.72);
+    --glass-border-light: rgba(255, 255, 255, 0.4);
+    --glass-border-dark: rgba(255, 255, 255, 0.08);
+  }
+
+  * {
+    @apply border-border;
+  }
+
+  body {
+    @apply bg-background text-foreground;
+  }
+}
+
+/* Custom scrollbar */
+::-webkit-scrollbar {
+  width: 6px;
+  height: 6px;
+}
+::-webkit-scrollbar-track {
+  background: transparent;
+}
+::-webkit-scrollbar-thumb {
+  background: hsl(var(--muted-foreground) / 0.3);
+  border-radius: 3px;
+}
+::-webkit-scrollbar-thumb:hover {
+  background: hsl(var(--muted-foreground) / 0.5);
+}
+
+/* CodeMirror integration */
+.cm-editor {
+  @apply h-full;
+}
+.cm-editor .cm-scroller {
+  @apply font-mono text-sm;
+}
@@ -0,0 +1,35 @@
+import '@testing-library/jest-dom/vitest';
+
+// Mock window.electronAPI for tests
+declare global {
+  interface Window {
+    electronAPI: any;
+  }
+}
+
+if (typeof window !== 'undefined' && !window.electronAPI) {
+  window.electronAPI = {};
+}
+
+// Mock matchMedia for next-themes (jsdom doesn't have it)
+if (typeof window !== 'undefined') {
+  Object.defineProperty(window, 'matchMedia', {
+    writable: true,
+    value: (query: string) => ({
+      matches: false,
+      media: query,
+      onchange: null,
+      addListener: () => {},
+      removeListener: () => {},
+      addEventListener: () => {},
+      removeEventListener: () => {},
+      dispatchEvent: () => true,
+    }),
+  });
+}
+
+// Mock react-resizable-panels for jsdom environment
+if (typeof window !== 'undefined') {
+  Object.defineProperty(window, 'innerWidth', { writable: true, value: 1920 });
+  Object.defineProperty(window, 'innerHeight', { writable: true, value: 1080 });
+}
@@ -0,0 +1,90 @@
+export interface ElectronAPI {
+  // App info
+  getAppVersion: () => Promise<string>;
+
+  // File operations
+  openFile: () => Promise<{ canceled: boolean; filePaths: string[] }>;
+  saveFile: (data: { path: string; content: string }) => Promise<void>;
+  readFile: (path: string) => Promise<string>;
+  setCurrentFile: (path: string | null) => void;
+
+  // Export
+  exportDocument: (format: string, options?: Record<string, any>) => Promise<void>;
+
+  // Theme
+  getTheme: () => void;
+  onThemeChanged: (callback: (theme: string) => void) => () => void;
+
+  // File events
+  onFileOpened: (callback: (data: { path: string; content: string }) => void) => () => void;
+  onFileNew: (callback: () => void) => () => void;
+  onFileSave: (callback: () => void) => () => void;
+
+  // Conversion status
+  onConversionStatus: (callback: (message: string) => void) => () => void;
+  onConversionComplete: (callback: (data: { format: string; outputPath: string }) => void) => () => void;
+
+  // Dialogs
+  showExportDialog: (format: string) => void;
+  showBatchDialog: () => void;
+  showUniversalConverterDialog: () => void;
+  showTableGenerator: () => void;
+  showPdfEditorDialog: () => void;
+  showHeaderFooterDialog: () => void;
+  showFieldPickerDialog: () => void;
+
+  // Settings
+  getSettings: (key: string) => Promise<any>;
+  setSettings: (key: string, value: any) => Promise<void>;
+
+  // Plugin settings
+  getPluginSetting: (key: string) => Promise<any>;
+  setPluginSetting: (key: string, value: any) => Promise<void>;
+
+  // Sidebar
+  toggleSidebar: () => void;
+  toggleBottomPanel: () => void;
+
+  // Print
+  doPrint: (options?: any) => void;
+
+  // PDF
+  openPdfViewer: (filePath: string) => void;
+  processPdfOperation: (data: any) => void;
+
+  // Images
+  selectFolder: () => Promise<string | null>;
+  savePastedImage: (data: { base64: string; ext: string }) => Promise<{ relativePath: string } | null>;
+
+  // Templates
+  loadTemplate: (file: string) => Promise<string>;
+  getSnippets: () => Promise<any[]>;
+  saveSnippet: (snippet: any) => Promise<void>;
+  deleteSnippet: (id: string) => Promise<void>;
+
+  // Git
+  gitStatus: () => Promise<any>;
+  gitDiff: (file: string) => Promise<any>;
+  gitStage: (files: string[]) => Promise<void>;
+  gitCommit: (message: string) => Promise<void>;
+  gitLog: () => Promise<any[]>;
+
+  // Directory
+  listDirectory: (dir: string) => Promise<any[] | null>;
+  openFilePath: (path: string) => void;
+
+  // Custom CSS
+  selectCustomCSS: () => Promise<string | null>;
+  loadCustomCSS: () => void;
+  clearCustomCSS: () => void;
+
+  // Generic invoke/on
+  invoke: (channel: string, data?: any) => Promise<any>;
+  on: (channel: string, callback: (...args: any[]) => void) => () => void;
+}
+
+declare global {
+  interface Window {
+    electronAPI: ElectronAPI;
+  }
+}
@@ -0,0 +1,62 @@
+export type IpcResult<T> =
+  | { ok: true; data: T }
+  | { ok: false; error: { code: string; message: string } };
+
+export interface FileEntry {
+  name: string;
+  path: string;
+  isDirectory: boolean;
+  size?: number;
+  modifiedAt?: string;
+}
+
+export interface FileResult {
+  path: string;
+  content: string;
+}
+
+export interface PdfOptions {
+  inputPath: string;
+  outputPath: string;
+  format?: 'letter' | 'a4' | 'legal';
+  margins?: { top: number; right: number; bottom: number; left: number };
+  toc?: boolean;
+  embedFonts?: boolean;
+}
+
+export interface DocxOptions {
+  inputPath: string;
+  outputPath: string;
+  template?: string;
+  referenceDoc?: string;
+}
+
+export interface HtmlOptions {
+  inputPath: string;
+  outputPath: string;
+  standalone?: boolean;
+  highlightStyle?: string;
+}
+
+export interface ExportResult {
+  outputPath: string;
+  bytes: number;
+  durationMs: number;
+}
+
+export interface BatchItem {
+  inputPath: string;
+  outputPath: string;
+}
+
+export interface BatchOptions {
+  format: 'pdf' | 'docx' | 'html' | 'png';
+  concurrency?: number;
+}
+
+export interface BatchResult {
+  total: number;
+  succeeded: number;
+  failed: number;
+  results: Array<{ item: BatchItem; ok: boolean; error?: string }>;
+}
@@ -1,49 +1,49 @@
 class ReplPanel {
-  constructor() {
-    this.panel = document.getElementById('bottom-panel');
-    this.output = document.getElementById('repl-output');
-    this.setupEventListeners();
-  }
+    constructor() {
+        this.panel = document.getElementById('bottom-panel');
+        this.output = document.getElementById('repl-output');
+        this.setupEventListeners();
+    }

-  setupEventListeners() {
-    document.getElementById('bottom-panel-toggle')?.addEventListener('click', () => this.toggle());
-    document.getElementById('repl-clear')?.addEventListener('click', () => this.clear());
-  }
+    setupEventListeners() {
+        document.getElementById('bottom-panel-toggle')?.addEventListener('click', () => this.toggle());
+        document.getElementById('repl-clear')?.addEventListener('click', () => this.clear());
+    }

-  toggle() {
-    this.panel.classList.toggle('collapsed');
-    const btn = document.getElementById('bottom-panel-toggle');
-    if (btn) btn.textContent = this.panel.classList.contains('collapsed') ? '\u25BC' : '\u25B2';
-  }
+    toggle() {
+        this.panel.classList.toggle('collapsed');
+        const btn = document.getElementById('bottom-panel-toggle');
+        if (btn) btn.textContent = this.panel.classList.contains('collapsed') ? '\u25BC' : '\u25B2';
+    }

-  show() {
-    this.panel.classList.remove('collapsed');
-    const btn = document.getElementById('bottom-panel-toggle');
-    if (btn) btn.textContent = '\u25B2';
-  }
+    show() {
+        this.panel.classList.remove('collapsed');
+        const btn = document.getElementById('bottom-panel-toggle');
+        if (btn) btn.textContent = '\u25B2';
+    }

-  clear() {
-    if (this.output) this.output.innerHTML = '';
-  }
+    clear() {
+        if (this.output) this.output.innerHTML = '';
+    }

-  appendOutput(command, result) {
-    const entry = document.createElement('div');
-    entry.className = 'repl-entry';
-    entry.innerHTML = `
+    appendOutput(command, result) {
+        const entry = document.createElement('div');
+        entry.className = 'repl-entry';
+        entry.innerHTML = `
            <div class="repl-command">\u25B6 ${command}</div>
            ${result.stdout ? `<div class="repl-stdout">${this.escapeHtml(result.stdout)}</div>` : ''}
            ${result.stderr ? `<div class="repl-stderr">${this.escapeHtml(result.stderr)}</div>` : ''}
            ${result.error ? `<div class="repl-error">Error: ${this.escapeHtml(result.error)}</div>` : ''}
        `;
-    this.output?.appendChild(entry);
-    this.output?.scrollTo(0, this.output.scrollHeight);
-  }
+        this.output?.appendChild(entry);
+        this.output?.scrollTo(0, this.output.scrollHeight);
+    }

-  escapeHtml(text) {
-    const div = document.createElement('div');
-    div.textContent = text;
-    return div.innerHTML;
-  }
+    escapeHtml(text) {
+        const div = document.createElement('div');
+        div.textContent = text;
+        return div.innerHTML;
+    }
 }

 module.exports = { ReplPanel };
@@ -1,5 +1,7 @@
+const path = require('path');
+
 function renderExplorerPanel(container, { listDirectory, onFileOpen, currentDir }) {
-  container.innerHTML = `
+    container.innerHTML = `
        <div class="explorer-panel">
            <div class="explorer-toolbar">
                <input type="text" class="explorer-path" id="explorer-path" value="${currentDir || ''}" placeholder="Open a folder..." readonly>
@@ -9,86 +11,60 @@ function renderExplorerPanel(container, { listDirectory, onFileOpen, currentDir
        </div>
    `;

-  document.getElementById('explorer-browse')?.addEventListener('click', async () => {
-    const dir = await listDirectory(null); // null means open folder dialog
-    if (dir) {
-      document.getElementById('explorer-path').value = dir.path;
-      renderTree(
-        document.getElementById('explorer-tree'),
-        dir.entries,
-        listDirectory,
-        onFileOpen,
-        dir.path
-      );
-    }
-  });
-
-  if (currentDir) {
-    listDirectory(currentDir).then((dir) => {
-      if (dir)
-        renderTree(
-          document.getElementById('explorer-tree'),
-          dir.entries,
-          listDirectory,
-          onFileOpen,
-          currentDir
-        );
+    document.getElementById('explorer-browse')?.addEventListener('click', async () => {
+        const dir = await listDirectory(null); // null means open folder dialog
+        if (dir) {
+            document.getElementById('explorer-path').value = dir.path;
+            renderTree(document.getElementById('explorer-tree'), dir.entries, listDirectory, onFileOpen, dir.path);
+        }
    });
-  }
+
+    if (currentDir) {
+        listDirectory(currentDir).then(dir => {
+            if (dir) renderTree(document.getElementById('explorer-tree'), dir.entries, listDirectory, onFileOpen, currentDir);
+        });
+    }
 }

-function renderTree(container, entries, listDirectory, onFileOpen, _basePath) {
-  container.innerHTML = entries
-    .map((entry) => {
-      if (entry.isDirectory) {
-        return `<div class="tree-item tree-folder collapsed" data-path="${entry.path}">
+function renderTree(container, entries, listDirectory, onFileOpen, basePath) {
+    container.innerHTML = entries.map(entry => {
+        if (entry.isDirectory) {
+            return `<div class="tree-item tree-folder collapsed" data-path="${entry.path}">
                <span class="tree-icon">&#x25B6;</span>
                <span class="tree-name">${entry.name}</span>
                <div class="tree-children"></div>
            </div>`;
-      }
-      return `<div class="tree-item tree-file" data-path="${entry.path}">
+        }
+        return `<div class="tree-item tree-file" data-path="${entry.path}">
            <span class="tree-icon">${getFileIcon(entry.name)}</span>
            <span class="tree-name">${entry.name}</span>
        </div>`;
-    })
-    .join('');
+    }).join('');

-  container.querySelectorAll('.tree-folder').forEach((el) => {
-    el.querySelector('.tree-name').addEventListener('click', async () => {
-      const isCollapsed = el.classList.contains('collapsed');
-      if (isCollapsed) {
-        const dir = await listDirectory(el.dataset.path);
-        if (dir) {
-          const childContainer = el.querySelector('.tree-children');
-          renderTree(childContainer, dir.entries, listDirectory, onFileOpen, el.dataset.path);
-        }
-      }
-      el.classList.toggle('collapsed');
-      el.querySelector('.tree-icon').textContent = el.classList.contains('collapsed')
-        ? '\u25B6'
-        : '\u25BC';
+    container.querySelectorAll('.tree-folder').forEach(el => {
+        el.querySelector('.tree-name').addEventListener('click', async () => {
+            const isCollapsed = el.classList.contains('collapsed');
+            if (isCollapsed) {
+                const dir = await listDirectory(el.dataset.path);
+                if (dir) {
+                    const childContainer = el.querySelector('.tree-children');
+                    renderTree(childContainer, dir.entries, listDirectory, onFileOpen, el.dataset.path);
+                }
+            }
+            el.classList.toggle('collapsed');
+            el.querySelector('.tree-icon').textContent = el.classList.contains('collapsed') ? '\u25B6' : '\u25BC';
+        });
    });
-  });

-  container.querySelectorAll('.tree-file').forEach((el) => {
-    el.addEventListener('click', () => onFileOpen(el.dataset.path));
-  });
+    container.querySelectorAll('.tree-file').forEach(el => {
+        el.addEventListener('click', () => onFileOpen(el.dataset.path));
+    });
 }

 function getFileIcon(filename) {
-  const ext = filename.split('.').pop().toLowerCase();
-  const icons = {
-    md: '\u{1F4DD}',
-    js: '\u{1F4DC}',
-    json: '{}',
-    html: '\u{1F310}',
-    css: '\u{1F3A8}',
-    py: '\u{1F40D}',
-    pdf: '\u{1F4D5}',
-    txt: '\u{1F4C4}',
-  };
-  return icons[ext] || '\u{1F4C4}';
+    const ext = filename.split('.').pop().toLowerCase();
+    const icons = { md: '\u{1F4DD}', js: '\u{1F4DC}', json: '{}', html: '\u{1F310}', css: '\u{1F3A8}', py: '\u{1F40D}', pdf: '\u{1F4D5}', txt: '\u{1F4C4}' };
+    return icons[ext] || '\u{1F4C4}';
 }

 module.exports = { renderExplorerPanel };
@@ -1,5 +1,5 @@
-function renderGitPanel(container, { gitStatus, _gitDiff, gitStage, gitCommit, gitLog }) {
-  container.innerHTML = `
+function renderGitPanel(container, { gitStatus, gitDiff, gitStage, gitCommit, gitLog }) {
+    container.innerHTML = `
        <div class="git-panel">
            <div class="git-section">
                <h4 class="git-section-title">Changes</h4>
@@ -19,76 +19,66 @@ function renderGitPanel(container, { gitStatus, _gitDiff, gitStage, gitCommit, g
        </div>
    `;

-  loadGitStatus();
+    loadGitStatus();

-  async function loadGitStatus() {
-    const status = await gitStatus();
-    const changesEl = document.getElementById('git-changes');
-    if (!status || !changesEl) return;
+    async function loadGitStatus() {
+        const status = await gitStatus();
+        const changesEl = document.getElementById('git-changes');
+        if (!status || !changesEl) return;

-    if (status.error) {
-      changesEl.innerHTML = `<p class="git-info">${status.error}</p>`;
-      return;
-    }
+        if (status.error) {
+            changesEl.innerHTML = `<p class="git-info">${status.error}</p>`;
+            return;
+        }

-    const files = [
-      ...status.modified.map((f) => ({ file: f, status: 'M', color: '#f59e0b' })),
-      ...status.not_added.map((f) => ({ file: f, status: '?', color: '#6b7280' })),
-      ...status.created.map((f) => ({ file: f, status: 'A', color: '#10b981' })),
-      ...status.deleted.map((f) => ({ file: f, status: 'D', color: '#ef4444' })),
-      ...status.staged.map((f) => ({ file: f, status: 'S', color: '#3b82f6' })),
-    ];
+        const files = [
+            ...status.modified.map(f => ({ file: f, status: 'M', color: '#f59e0b' })),
+            ...status.not_added.map(f => ({ file: f, status: '?', color: '#6b7280' })),
+            ...status.created.map(f => ({ file: f, status: 'A', color: '#10b981' })),
+            ...status.deleted.map(f => ({ file: f, status: 'D', color: '#ef4444' })),
+            ...status.staged.map(f => ({ file: f, status: 'S', color: '#3b82f6' })),
+        ];

-    if (files.length === 0) {
-      changesEl.innerHTML = '<p class="git-info">No changes</p>';
-    } else {
-      changesEl.innerHTML = files
-        .map(
-          (f) => `
+        if (files.length === 0) {
+            changesEl.innerHTML = '<p class="git-info">No changes</p>';
+        } else {
+            changesEl.innerHTML = files.map(f => `
                <div class="git-file" data-file="${f.file}">
                    <span class="git-file-status" style="color:${f.color}">${f.status}</span>
                    <span class="git-file-name">${f.file}</span>
                    <button class="git-stage-btn" data-file="${f.file}" title="Stage file">+</button>
                </div>
-            `
-        )
-        .join('');
+            `).join('');

-      changesEl.querySelectorAll('.git-stage-btn').forEach((btn) => {
-        btn.addEventListener('click', async (e) => {
-          e.stopPropagation();
-          await gitStage([btn.dataset.file]);
-          loadGitStatus();
-        });
-      });
-    }
+            changesEl.querySelectorAll('.git-stage-btn').forEach(btn => {
+                btn.addEventListener('click', async (e) => {
+                    e.stopPropagation();
+                    await gitStage([btn.dataset.file]);
+                    loadGitStatus();
+                });
+            });
+        }

-    // Load log
-    const log = await gitLog();
-    const logEl = document.getElementById('git-log');
-    if (log && logEl) {
-      logEl.innerHTML =
-        (log.all || [])
-          .slice(0, 10)
-          .map(
-            (entry) => `
+        // Load log
+        const log = await gitLog();
+        const logEl = document.getElementById('git-log');
+        if (log && logEl) {
+            logEl.innerHTML = (log.all || []).slice(0, 10).map(entry => `
                <div class="git-log-entry">
                    <div class="git-log-msg">${entry.message}</div>
                    <div class="git-log-meta">${entry.date?.substring(0, 10) || ''} &middot; ${entry.author_name || ''}</div>
                </div>
-            `
-          )
-          .join('') || '<p class="git-info">No commits</p>';
+            `).join('') || '<p class="git-info">No commits</p>';
+        }
    }
-  }

-  document.getElementById('git-commit-btn')?.addEventListener('click', async () => {
-    const msg = document.getElementById('git-commit-msg')?.value?.trim();
-    if (!msg) return;
-    await gitCommit(msg);
-    document.getElementById('git-commit-msg').value = '';
-    loadGitStatus();
-  });
+    document.getElementById('git-commit-btn')?.addEventListener('click', async () => {
+        const msg = document.getElementById('git-commit-msg')?.value?.trim();
+        if (!msg) return;
+        await gitCommit(msg);
+        document.getElementById('git-commit-msg').value = '';
+        loadGitStatus();
+    });
 }

 module.exports = { renderGitPanel };
@@ -4,54 +4,54 @@
 */

 function renderOutlinePanel(container, { getEditorContent, getActiveLine, onHeadingClick }) {
-  container.innerHTML = `
+    container.innerHTML = `
        <div class="outline-panel">
            <div class="outline-list" id="outline-list"></div>
        </div>
    `;

-  const listEl = document.getElementById('outline-list');
-  let headings = [];
-  let activeLine = 1;
-  let debounceTimer = null;
+    const listEl = document.getElementById('outline-list');
+    let headings = [];
+    let activeLine = 1;
+    let debounceTimer = null;

-  function parseHeadings(content) {
-    const result = [];
-    if (!content) return result;
-    const lines = content.split('\n');
-    const regex = /^(#{1,6})\s+(.+)$/;
-    for (let i = 0; i < lines.length; i++) {
-      const match = regex.exec(lines[i]);
-      if (match) {
-        result.push({
-          level: match[1].length,
-          text: match[2].trim(),
-          line: i + 1,
-        });
-      }
+    function parseHeadings(content) {
+        const result = [];
+        if (!content) return result;
+        const lines = content.split('\n');
+        const regex = /^(#{1,6})\s+(.+)$/;
+        for (let i = 0; i < lines.length; i++) {
+            const match = regex.exec(lines[i]);
+            if (match) {
+                result.push({
+                    level: match[1].length,
+                    text: match[2].trim(),
+                    line: i + 1
+                });
+            }
+        }
+        return result;
    }
-    return result;
-  }

-  function findActiveHeading(currentLine) {
-    let active = null;
-    for (const h of headings) {
-      if (h.line <= currentLine) {
-        active = h;
-      } else {
-        break;
-      }
+    function findActiveHeading(currentLine) {
+        let active = null;
+        for (const h of headings) {
+            if (h.line <= currentLine) {
+                active = h;
+            } else {
+                break;
+            }
+        }
+        return active;
    }
-    return active;
-  }

-  function renderHeadings() {
-    const content = getEditorContent();
-    headings = parseHeadings(content);
-    activeLine = getActiveLine();
+    function renderHeadings() {
+        const content = getEditorContent();
+        headings = parseHeadings(content);
+        activeLine = getActiveLine();

-    if (headings.length === 0) {
-      listEl.innerHTML = `
+        if (headings.length === 0) {
+            listEl.innerHTML = `
                <div class="outline-empty">
                    <p>No headings found</p>
                    <p class="outline-hint"># Heading 1</p>
@@ -59,62 +59,56 @@ function renderOutlinePanel(container, { getEditorContent, getActiveLine, onHead
                    <p class="outline-hint">### Heading 3</p>
                </div>
            `;
-      return;
-    }
+            return;
+        }

-    const activeHeading = findActiveHeading(activeLine);
+        const activeHeading = findActiveHeading(activeLine);

-    listEl.innerHTML =
-      headings
-        .map(
-          (h, idx) => `
+        listEl.innerHTML = headings.map((h, idx) => `
            <div class="outline-item outline-level-${h.level}${activeHeading && h.line === activeHeading.line ? ' active' : ''}"
                 data-line="${h.line}" data-index="${idx}">
                <span class="outline-text">${escapeHtml(h.text)}</span>
                <span class="outline-badge">H${h.level}</span>
            </div>
-        `
-        )
-        .join('') +
-      `<div class="outline-footer">${headings.length} heading${headings.length !== 1 ? 's' : ''}</div>`;
+        `).join('') + `<div class="outline-footer">${headings.length} heading${headings.length !== 1 ? 's' : ''}</div>`;

-    listEl.querySelectorAll('.outline-item').forEach((item) => {
-      item.addEventListener('click', () => {
-        const line = parseInt(item.dataset.line, 10);
-        onHeadingClick(line);
-      });
-    });
-  }
+        listEl.querySelectorAll('.outline-item').forEach(item => {
+            item.addEventListener('click', () => {
+                const line = parseInt(item.dataset.line, 10);
+                onHeadingClick(line);
+            });
+        });
+    }

-  function escapeHtml(text) {
-    const div = document.createElement('div');
-    div.textContent = text;
-    return div.innerHTML;
-  }
+    function escapeHtml(text) {
+        const div = document.createElement('div');
+        div.textContent = text;
+        return div.innerHTML;
+    }

-  function refresh() {
-    clearTimeout(debounceTimer);
-    debounceTimer = setTimeout(renderHeadings, 300);
-  }
+    function refresh() {
+        clearTimeout(debounceTimer);
+        debounceTimer = setTimeout(renderHeadings, 300);
+    }

-  function setActiveHeading(line) {
-    activeLine = line;
-    const activeHeading = findActiveHeading(line);
+    function setActiveHeading(line) {
+        activeLine = line;
+        const activeHeading = findActiveHeading(line);

-    listEl.querySelectorAll('.outline-item').forEach((item) => {
-      const itemLine = parseInt(item.dataset.line, 10);
-      if (activeHeading && itemLine === activeHeading.line) {
-        item.classList.add('active');
-      } else {
-        item.classList.remove('active');
-      }
-    });
-  }
+        listEl.querySelectorAll('.outline-item').forEach(item => {
+            const itemLine = parseInt(item.dataset.line, 10);
+            if (activeHeading && itemLine === activeHeading.line) {
+                item.classList.add('active');
+            } else {
+                item.classList.remove('active');
+            }
+        });
+    }

-  container._refreshOutline = refresh;
-  container._setActiveHeading = setActiveHeading;
+    container._refreshOutline = refresh;
+    container._setActiveHeading = setActiveHeading;

-  renderHeadings();
+    renderHeadings();
 }

 module.exports = { renderOutlinePanel };
@@ -1,52 +1,50 @@
 class SidebarManager {
-  constructor() {
-    this.sidebar = document.getElementById('sidebar');
-    this.panelContent = document.getElementById('sidebar-panel-content');
-    this.panelTitle = document.querySelector('.sidebar-panel-title');
-    this.activePanel = null;
-    this.panels = new Map();
-    this.setupEventListeners();
-  }
-
-  setupEventListeners() {
-    document.querySelectorAll('.sidebar-icon').forEach((btn) => {
-      btn.addEventListener('click', () => this.togglePanel(btn.dataset.panel));
-    });
-    document
-      .querySelector('.sidebar-panel-close')
-      ?.addEventListener('click', () => this.collapse());
-  }
-
-  registerPanel(name, { title, render }) {
-    this.panels.set(name, { title, render });
-  }
-
-  togglePanel(name) {
-    if (this.activePanel === name) {
-      this.collapse();
-    } else {
-      this.expand(name);
+    constructor() {
+        this.sidebar = document.getElementById('sidebar');
+        this.panelContent = document.getElementById('sidebar-panel-content');
+        this.panelTitle = document.querySelector('.sidebar-panel-title');
+        this.activePanel = null;
+        this.panels = new Map();
+        this.setupEventListeners();
    }
-  }

-  expand(name) {
-    const panel = this.panels.get(name);
-    if (!panel) return;
-    this.sidebar.classList.remove('collapsed');
-    this.panelTitle.textContent = panel.title;
-    this.panelContent.innerHTML = '';
-    panel.render(this.panelContent);
-    this.activePanel = name;
-    document.querySelectorAll('.sidebar-icon').forEach((btn) => {
-      btn.classList.toggle('active', btn.dataset.panel === name);
-    });
-  }
+    setupEventListeners() {
+        document.querySelectorAll('.sidebar-icon').forEach(btn => {
+            btn.addEventListener('click', () => this.togglePanel(btn.dataset.panel));
+        });
+        document.querySelector('.sidebar-panel-close')?.addEventListener('click', () => this.collapse());
+    }

-  collapse() {
-    this.sidebar.classList.add('collapsed');
-    this.activePanel = null;
-    document.querySelectorAll('.sidebar-icon').forEach((btn) => btn.classList.remove('active'));
-  }
+    registerPanel(name, { title, render }) {
+        this.panels.set(name, { title, render });
+    }
+
+    togglePanel(name) {
+        if (this.activePanel === name) {
+            this.collapse();
+        } else {
+            this.expand(name);
+        }
+    }
+
+    expand(name) {
+        const panel = this.panels.get(name);
+        if (!panel) return;
+        this.sidebar.classList.remove('collapsed');
+        this.panelTitle.textContent = panel.title;
+        this.panelContent.innerHTML = '';
+        panel.render(this.panelContent);
+        this.activePanel = name;
+        document.querySelectorAll('.sidebar-icon').forEach(btn => {
+            btn.classList.toggle('active', btn.dataset.panel === name);
+        });
+    }
+
+    collapse() {
+        this.sidebar.classList.add('collapsed');
+        this.activePanel = null;
+        document.querySelectorAll('.sidebar-icon').forEach(btn => btn.classList.remove('active'));
+    }
 }

 module.exports = { SidebarManager };
@@ -1,5 +1,5 @@
 function renderSnippetsPanel(container, { getSnippets, saveSnippet, deleteSnippet, onInsert }) {
-  container.innerHTML = `
+    container.innerHTML = `
        <div class="snippets-panel">
            <div class="snippets-toolbar">
                <input type="text" class="snippets-search" id="snippets-search" placeholder="Search snippets...">
@@ -9,29 +9,22 @@ function renderSnippetsPanel(container, { getSnippets, saveSnippet, deleteSnippe
        </div>
    `;

-  let snippets = [];
+    let snippets = [];

-  async function loadSnippets() {
-    snippets = (await getSnippets()) || [];
-    renderList(document.getElementById('snippets-search')?.value || '');
-  }
+    async function loadSnippets() {
+        snippets = await getSnippets() || [];
+        renderList(document.getElementById('snippets-search')?.value || '');
+    }

-  function renderList(query) {
-    const list = document.getElementById('snippets-list');
-    if (!list) return;
+    function renderList(query) {
+        const list = document.getElementById('snippets-list');
+        if (!list) return;

-    const filtered = query
-      ? snippets.filter(
-          (s) =>
-            s.name.toLowerCase().includes(query.toLowerCase()) ||
-            (s.language || '').toLowerCase().includes(query.toLowerCase())
-        )
-      : snippets;
+        const filtered = query
+            ? snippets.filter(s => s.name.toLowerCase().includes(query.toLowerCase()) || (s.language || '').toLowerCase().includes(query.toLowerCase()))
+            : snippets;

-    list.innerHTML = filtered.length
-      ? filtered
-          .map(
-            (s) => `
+        list.innerHTML = filtered.length ? filtered.map(s => `
            <div class="snippet-item" data-id="${s.id}">
                <div class="snippet-header">
                    <span class="snippet-name">${s.name}</span>
@@ -43,41 +36,36 @@ function renderSnippetsPanel(container, { getSnippets, saveSnippet, deleteSnippe
                    <button class="snippet-delete" data-id="${s.id}" title="Delete">&times;</button>
                </div>
            </div>
-        `
-          )
-          .join('')
-      : '<p class="git-info">No snippets yet. Click + to add one.</p>';
+        `).join('') : '<p class="git-info">No snippets yet. Click + to add one.</p>';

-    list.querySelectorAll('.snippet-insert').forEach((btn) => {
-      btn.addEventListener('click', () => {
-        const s = snippets.find((sn) => sn.id === btn.dataset.id);
-        if (s) onInsert(s.code);
-      });
+        list.querySelectorAll('.snippet-insert').forEach(btn => {
+            btn.addEventListener('click', () => {
+                const s = snippets.find(sn => sn.id === btn.dataset.id);
+                if (s) onInsert(s.code);
+            });
+        });
+
+        list.querySelectorAll('.snippet-delete').forEach(btn => {
+            btn.addEventListener('click', async () => {
+                await deleteSnippet(btn.dataset.id);
+                loadSnippets();
+            });
+        });
+    }
+
+    document.getElementById('snippets-search')?.addEventListener('input', (e) => renderList(e.target.value));
+
+    document.getElementById('snippets-add')?.addEventListener('click', () => {
+        const name = prompt('Snippet name:');
+        if (!name) return;
+        const language = prompt('Language (e.g., javascript, python, html):') || 'text';
+        const code = prompt('Paste your code snippet:');
+        if (!code) return;
+
+        saveSnippet({ id: Date.now().toString(), name, language, code }).then(() => loadSnippets());
    });

-    list.querySelectorAll('.snippet-delete').forEach((btn) => {
-      btn.addEventListener('click', async () => {
-        await deleteSnippet(btn.dataset.id);
-        loadSnippets();
-      });
-    });
-  }
-
-  document
-    .getElementById('snippets-search')
-    ?.addEventListener('input', (e) => renderList(e.target.value));
-
-  document.getElementById('snippets-add')?.addEventListener('click', () => {
-    const name = prompt('Snippet name:');
-    if (!name) return;
-    const language = prompt('Language (e.g., javascript, python, html):') || 'text';
-    const code = prompt('Paste your code snippet:');
-    if (!code) return;
-
-    saveSnippet({ id: Date.now().toString(), name, language, code }).then(() => loadSnippets());
-  });
-
-  loadSnippets();
+    loadSnippets();
 }

 module.exports = { renderSnippetsPanel };
@@ -1,39 +1,34 @@
+const fs = require('fs');
+const path = require('path');
+
 const templates = [
-  { name: 'Blog Post', file: 'blog-post.md', description: 'Article with frontmatter' },
-  { name: 'Meeting Notes', file: 'meeting-notes.md', description: 'Agenda, notes, action items' },
-  {
-    name: 'Technical Spec',
-    file: 'technical-spec.md',
-    description: 'Requirements and architecture',
-  },
-  { name: 'Changelog', file: 'changelog.md', description: 'Keep a Changelog format' },
-  { name: 'README', file: 'readme.md', description: 'Project documentation' },
-  { name: 'Project Plan', file: 'project-plan.md', description: 'Goals, milestones, timeline' },
-  { name: 'API Docs', file: 'api-docs.md', description: 'API endpoint documentation' },
-  { name: 'Tutorial', file: 'tutorial.md', description: 'Step-by-step guide' },
-  { name: 'Release Notes', file: 'release-notes.md', description: 'Version release summary' },
-  { name: 'Comparison', file: 'comparison.md', description: 'Feature comparison table' },
+    { name: 'Blog Post', file: 'blog-post.md', description: 'Article with frontmatter' },
+    { name: 'Meeting Notes', file: 'meeting-notes.md', description: 'Agenda, notes, action items' },
+    { name: 'Technical Spec', file: 'technical-spec.md', description: 'Requirements and architecture' },
+    { name: 'Changelog', file: 'changelog.md', description: 'Keep a Changelog format' },
+    { name: 'README', file: 'readme.md', description: 'Project documentation' },
+    { name: 'Project Plan', file: 'project-plan.md', description: 'Goals, milestones, timeline' },
+    { name: 'API Docs', file: 'api-docs.md', description: 'API endpoint documentation' },
+    { name: 'Tutorial', file: 'tutorial.md', description: 'Step-by-step guide' },
+    { name: 'Release Notes', file: 'release-notes.md', description: 'Version release summary' },
+    { name: 'Comparison', file: 'comparison.md', description: 'Feature comparison table' },
 ];

 function renderTemplatesPanel(container, onSelect) {
-  container.innerHTML = `
+    container.innerHTML = `
        <div class="panel-list">
-            ${templates
-              .map(
-                (t) => `
+            ${templates.map(t => `
                <div class="panel-list-item template-item" data-file="${t.file}">
                    <div class="panel-list-item-title">${t.name}</div>
                    <div class="panel-list-item-desc">${t.description}</div>
                </div>
-            `
-              )
-              .join('')}
+            `).join('')}
        </div>
    `;

-  container.querySelectorAll('.template-item').forEach((el) => {
-    el.addEventListener('click', () => onSelect(el.dataset.file));
-  });
+    container.querySelectorAll('.template-item').forEach(el => {
+        el.addEventListener('click', () => onSelect(el.dataset.file));
+    });
 }

 module.exports = { renderTemplatesPanel, templates };
@@ -675,33 +675,18 @@ body.theme-concreteinfo-dark .modal-footer {
   Animations
   ============================================ */
@keyframes fadeIn {
-  from {
-    opacity: 0;
-  }
-  to {
-    opacity: 1;
-  }
+  from { opacity: 0; }
+  to { opacity: 1; }
 }

@keyframes slideUp {
-  from {
-    transform: translateY(20px);
-    opacity: 0;
-  }
-  to {
-    transform: translateY(0);
-    opacity: 1;
-  }
+  from { transform: translateY(20px); opacity: 0; }
+  to { transform: translateY(0); opacity: 1; }
 }

@keyframes pulse {
-  0%,
-  100% {
-    transform: scale(1);
-  }
-  50% {
-    transform: scale(1.05);
-  }
+  0%, 100% { transform: scale(1); }
+  50% { transform: scale(1.05); }
 }

 .animate-fade-in {
@@ -60,15 +60,7 @@

 /* Base styles - Reset is in styles.css */
 body {
-  font-family:
-    'Inter',
-    -apple-system,
-    BlinkMacSystemFont,
-    'Segoe UI',
-    Roboto,
-    'Helvetica Neue',
-    Arial,
-    sans-serif;
+  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  overflow: hidden;
  height: 100vh;
  /* Background controlled by themes - do not set here */
@@ -76,15 +68,9 @@ body {
 }

@keyframes gradientShift {
-  0% {
-    background-position: 0% 50%;
-  }
-  50% {
-    background-position: 100% 50%;
-  }
-  100% {
-    background-position: 0% 50%;
-  }
+  0% { background-position: 0% 50%; }
+  50% { background-position: 100% 50%; }
+  100% { background-position: 0% 50%; }
 }

 .container {
@@ -359,9 +345,7 @@ body {
 }

 /* Preview Styles - Modern Typography */
-.preview-content h1,
-.preview-content h2,
-.preview-content h3 {
+.preview-content h1, .preview-content h2, .preview-content h3 {
  /* Color controlled by theme */
  font-weight: 700;
  margin-top: 28px;
@@ -711,7 +695,11 @@ body {
  left: 0;
  right: 0;
  bottom: 0;
-  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
+  background: linear-gradient(90deg,
+    transparent,
+    rgba(255, 255, 255, 0.3),
+    transparent
+  );
  animation: shimmer 2s infinite;
 }

@@ -810,9 +798,7 @@ body {
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  transform: translate(-50%, -50%);
-  transition:
-    width 0.6s,
-    height 0.6s;
+  transition: width 0.6s, height 0.6s;
 }

 .toolbar button:hover::before,
@@ -1060,7 +1046,7 @@ body.theme-paper .pdf-viewer-toolbar,
 body.theme-rosepine-dawn .pdf-viewer-toolbar {
  background: linear-gradient(180deg, #fafafa 0%, #f0f0f0 100%) !important;
  border-bottom: 1px solid #d0d0d0 !important;
-  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
+  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
 }

 body.theme-light .pdf-viewer-toolbar button,
@@ -1075,7 +1061,7 @@ body.theme-rosepine-dawn .pdf-viewer-toolbar button {
  background: #fff !important;
  border: 1px solid #ccc !important;
  color: #333 !important;
-  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
+  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
 }

 body.theme-light .pdf-viewer-toolbar button:hover,
@@ -1458,7 +1444,7 @@ body.theme-rosepine-dawn .pdf-viewer {
  .export-dialog,
  .batch-dialog,
  .editor-pane,
-  [id^='editor-pane-'],
+  [id^="editor-pane-"],
  .new-tab-button,
  .tab-close {
    display: none !important;
@@ -1466,9 +1452,9 @@ body.theme-rosepine-dawn .pdf-viewer {

  /* Show preview content */
  .preview-pane,
-  [id^='preview-pane-'],
+  [id^="preview-pane-"],
  .preview-content,
-  [id^='preview-'] {
+  [id^="preview-"] {
    display: block !important;
    width: 100% !important;
    padding: 20px !important;
@@ -1505,9 +1491,9 @@ body.theme-rosepine-dawn .pdf-viewer {
  body.printing-no-styles .tab-content,
  body.printing-no-styles .pane,
  body.printing-no-styles .preview-pane,
-  body.printing-no-styles [id^='preview-pane-'],
+  body.printing-no-styles [id^="preview-pane-"],
  body.printing-no-styles .preview-content,
-  body.printing-no-styles [id^='preview-'] {
+  body.printing-no-styles [id^="preview-"] {
    background: white !important;
    color: #000 !important;
  }
@@ -1553,27 +1539,27 @@ body.theme-rosepine-dawn .pdf-viewer {

 /* Common dark theme styles for preview content */
 body.theme-dark .preview-content,
-body.theme-dark [id^='preview-'],
+body.theme-dark [id^="preview-"],
 body.theme-one-dark .preview-content,
-body.theme-one-dark [id^='preview-'],
+body.theme-one-dark [id^="preview-"],
 body.theme-dracula .preview-content,
-body.theme-dracula [id^='preview-'],
+body.theme-dracula [id^="preview-"],
 body.theme-nord .preview-content,
-body.theme-nord [id^='preview-'],
+body.theme-nord [id^="preview-"],
 body.theme-tokyo-night .preview-content,
-body.theme-tokyo-night [id^='preview-'],
+body.theme-tokyo-night [id^="preview-"],
 body.theme-palenight .preview-content,
-body.theme-palenight [id^='preview-'],
+body.theme-palenight [id^="preview-"],
 body.theme-ayu-dark .preview-content,
-body.theme-ayu-dark [id^='preview-'],
+body.theme-ayu-dark [id^="preview-"],
 body.theme-ayu-mirage .preview-content,
-body.theme-ayu-mirage [id^='preview-'],
+body.theme-ayu-mirage [id^="preview-"],
 body.theme-oceanic-next .preview-content,
-body.theme-oceanic-next [id^='preview-'],
+body.theme-oceanic-next [id^="preview-"],
 body.theme-gruvbox-dark .preview-content,
-body.theme-gruvbox-dark [id^='preview-'],
+body.theme-gruvbox-dark [id^="preview-"],
 body.theme-cobalt2 .preview-content,
-body.theme-cobalt2 [id^='preview-'] {
+body.theme-cobalt2 [id^="preview-"] {
  color: #e6e6e6;
  background: transparent;
 }
@@ -2159,353 +2145,233 @@ body.theme-rosepine-dawn .batch-dialog-footer {
   Command Palette (Ctrl+Shift+P)
   ======================================== */
 .command-palette-overlay {
-  position: fixed;
-  top: 0;
-  left: 0;
-  right: 0;
-  bottom: 0;
-  background: rgba(0, 0, 0, 0.3);
-  z-index: 1000;
-  display: flex;
-  justify-content: center;
-  padding-top: 80px;
+    position: fixed;
+    top: 0;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    background: rgba(0, 0, 0, 0.3);
+    z-index: 1000;
+    display: flex;
+    justify-content: center;
+    padding-top: 80px;
 }
 .command-palette-overlay.hidden {
-  display: none;
+    display: none;
 }
 .command-palette {
-  width: 560px;
-  max-height: 400px;
-  background: #fff;
-  border-radius: 12px;
-  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
-  overflow: hidden;
-  display: flex;
-  flex-direction: column;
+    width: 560px;
+    max-height: 400px;
+    background: #fff;
+    border-radius: 12px;
+    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
+    overflow: hidden;
+    display: flex;
+    flex-direction: column;
 }
 .command-palette-input {
-  width: 100%;
-  padding: 14px 18px;
-  border: none;
-  outline: none;
-  font-size: 15px;
-  border-bottom: 1px solid #e5e7eb;
-  font-family: inherit;
+    width: 100%;
+    padding: 14px 18px;
+    border: none;
+    outline: none;
+    font-size: 15px;
+    border-bottom: 1px solid #e5e7eb;
+    font-family: inherit;
 }
 .command-palette-results {
-  overflow-y: auto;
-  max-height: 340px;
+    overflow-y: auto;
+    max-height: 340px;
 }
 .command-item {
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-  padding: 10px 18px;
-  cursor: pointer;
-  font-size: 14px;
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 10px 18px;
+    cursor: pointer;
+    font-size: 14px;
 }
 .command-item:hover,
 .command-item.selected {
-  background: #f3f4f6;
+    background: #f3f4f6;
 }
 .command-label strong {
-  color: #5661b3;
+    color: #5661b3;
 }
 .command-shortcut {
-  font-size: 12px;
-  color: #9ca3af;
-  background: #f3f4f6;
-  padding: 2px 8px;
-  border-radius: 4px;
-  font-family: 'JetBrains Mono', monospace;
+    font-size: 12px;
+    color: #9ca3af;
+    background: #f3f4f6;
+    padding: 2px 8px;
+    border-radius: 4px;
+    font-family: 'JetBrains Mono', monospace;
 }

 /* Dark theme command palette */
-body[class*='dark'] .command-palette {
-  background: #1e1e1e;
-  border: 1px solid #333;
+body[class*="dark"] .command-palette {
+    background: #1e1e1e;
+    border: 1px solid #333;
 }
-body[class*='dark'] .command-palette-input {
-  background: #1e1e1e;
-  color: #eee;
-  border-color: #333;
+body[class*="dark"] .command-palette-input {
+    background: #1e1e1e;
+    color: #eee;
+    border-color: #333;
 }
-body[class*='dark'] .command-item:hover,
-body[class*='dark'] .command-item.selected {
-  background: #2d2d2d;
+body[class*="dark"] .command-item:hover,
+body[class*="dark"] .command-item.selected {
+    background: #2d2d2d;
 }
-body[class*='dark'] .command-shortcut {
-  background: #333;
-  color: #888;
+body[class*="dark"] .command-shortcut {
+    background: #333;
+    color: #888;
 }

 /* ========================================
   Breadcrumb Bar
   ======================================== */
 .breadcrumb-bar {
-  padding: 4px 12px;
-  font-size: 12px;
-  color: var(--gray-500, #6b7280);
-  border-bottom: 1px solid var(--gray-200, #e5e7eb);
-  white-space: nowrap;
-  overflow: hidden;
-  text-overflow: ellipsis;
-  flex-shrink: 0;
-  background: var(--gray-50, #f9fafb);
-  font-family: 'JetBrains Mono', monospace;
+    padding: 4px 12px;
+    font-size: 12px;
+    color: var(--gray-500, #6b7280);
+    border-bottom: 1px solid var(--gray-200, #e5e7eb);
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    flex-shrink: 0;
+    background: var(--gray-50, #f9fafb);
+    font-family: 'JetBrains Mono', monospace;
 }
-body[class*='dark'] .breadcrumb-bar {
-  background: #1a1a1a;
-  color: #888;
-  border-color: #333;
+body[class*="dark"] .breadcrumb-bar {
+    background: #1a1a1a;
+    color: #888;
+    border-color: #333;
 }

 /* Print Preview Dialog */
 .print-preview-dialog {
-  width: 90vw;
-  max-width: 1200px;
-  height: 80vh;
-  display: flex;
-  flex-direction: column;
+    width: 90vw;
+    max-width: 1200px;
+    height: 80vh;
+    display: flex;
+    flex-direction: column;
 }
 .print-preview-body {
-  display: flex;
-  flex: 1;
-  overflow: hidden;
+    display: flex;
+    flex: 1;
+    overflow: hidden;
 }
 .print-preview-sidebar {
-  width: 260px;
-  padding: 16px;
-  border-right: 1px solid var(--gray-200, #e5e7eb);
-  overflow-y: auto;
-  flex-shrink: 0;
-  display: flex;
-  flex-direction: column;
-  gap: 16px;
+    width: 260px;
+    padding: 16px;
+    border-right: 1px solid var(--gray-200, #e5e7eb);
+    overflow-y: auto;
+    flex-shrink: 0;
+    display: flex;
+    flex-direction: column;
+    gap: 16px;
 }
 .print-preview-content {
-  flex: 1;
-  padding: 16px;
-  background: #e5e7eb;
-  display: flex;
-  justify-content: center;
-  overflow: auto;
+    flex: 1;
+    padding: 16px;
+    background: #e5e7eb;
+    display: flex;
+    justify-content: center;
+    overflow: auto;
 }
 .print-preview-content iframe {
-  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
-  border-radius: 4px;
+    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
+    border-radius: 4px;
 }
 .print-option-group {
-  display: flex;
-  flex-direction: column;
-  gap: 6px;
+    display: flex;
+    flex-direction: column;
+    gap: 6px;
 }
 .print-option-group label {
-  font-size: 13px;
-  font-weight: 500;
-  color: var(--gray-600, #4b5563);
+    font-size: 13px;
+    font-weight: 500;
+    color: var(--gray-600, #4b5563);
 }
 .print-option-group select,
-.print-option-group input[type='text'] {
-  padding: 8px 10px;
-  border: 1px solid var(--gray-300, #d1d5db);
-  border-radius: 8px;
-  font-size: 13px;
-  background: white;
+.print-option-group input[type="text"] {
+    padding: 8px 10px;
+    border: 1px solid var(--gray-300, #d1d5db);
+    border-radius: 8px;
+    font-size: 13px;
+    background: white;
 }
 .scale-control {
-  display: flex;
-  align-items: center;
-  gap: 8px;
+    display: flex;
+    align-items: center;
+    gap: 8px;
 }
-.scale-control input[type='range'] {
-  flex: 1;
+.scale-control input[type="range"] {
+    flex: 1;
 }
 .checkbox-label {
-  display: flex;
-  align-items: center;
-  gap: 8px;
-  cursor: pointer;
+    display: flex;
+    align-items: center;
+    gap: 8px;
+    cursor: pointer;
 }
 .print-range-input {
-  margin-top: 6px;
+    margin-top: 6px;
 }
 .print-actions {
-  display: flex;
-  gap: 8px;
-  margin-top: auto;
-  padding-top: 16px;
+    display: flex;
+    gap: 8px;
+    margin-top: auto;
+    padding-top: 16px;
 }
 .btn-primary {
-  flex: 1;
-  padding: 10px;
-  background: var(--primary-dark, #5661b3);
-  color: white;
-  border: none;
-  border-radius: 8px;
-  font-size: 14px;
-  font-weight: 500;
-  cursor: pointer;
+    flex: 1;
+    padding: 10px;
+    background: var(--primary-dark, #5661b3);
+    color: white;
+    border: none;
+    border-radius: 8px;
+    font-size: 14px;
+    font-weight: 500;
+    cursor: pointer;
 }
 .btn-primary:hover {
-  opacity: 0.9;
+    opacity: 0.9;
 }
 .btn-secondary {
-  flex: 1;
-  padding: 10px;
-  background: var(--gray-100, #f3f4f6);
-  color: var(--gray-700, #374151);
-  border: 1px solid var(--gray-300, #d1d5db);
-  border-radius: 8px;
-  font-size: 14px;
-  cursor: pointer;
+    flex: 1;
+    padding: 10px;
+    background: var(--gray-100, #f3f4f6);
+    color: var(--gray-700, #374151);
+    border: 1px solid var(--gray-300, #d1d5db);
+    border-radius: 8px;
+    font-size: 14px;
+    cursor: pointer;
 }

 /* Writing Analytics Modal */
-.analytics-overlay {
-  position: fixed;
-  inset: 0;
-  background: rgba(0, 0, 0, 0.5);
-  backdrop-filter: blur(4px);
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  z-index: 10000;
-  animation: analyticsFadeIn 0.2s ease;
-}
-.analytics-modal {
-  background: var(--bg-primary, #fff);
-  border-radius: 12px;
-  width: 520px;
-  max-height: 80vh;
-  overflow-y: auto;
-  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
-  animation: analyticsSlideUp 0.3s ease;
-}
-.analytics-header {
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-  padding: 20px 24px;
-  border-bottom: 1px solid var(--border-color, #e5e7eb);
-}
-.analytics-header h2 {
-  margin: 0;
-  font-size: 18px;
-  font-weight: 600;
-  color: var(--text-primary);
-}
-.analytics-close {
-  background: none;
-  border: none;
-  font-size: 24px;
-  cursor: pointer;
-  color: var(--text-muted);
-  padding: 4px 8px;
-  border-radius: 4px;
-}
-.analytics-close:hover {
-  background: var(--bg-tertiary);
-  color: var(--text-primary);
-}
-.analytics-body {
-  padding: 16px 24px 24px;
-}
-.analytics-section {
-  margin-bottom: 20px;
-}
-.analytics-section h3 {
-  font-size: 12px;
-  font-weight: 600;
-  text-transform: uppercase;
-  letter-spacing: 0.05em;
-  color: var(--text-muted, #9ca3af);
-  margin: 0 0 10px;
-}
-.analytics-row {
-  display: flex;
-  justify-content: space-between;
-  align-items: baseline;
-  padding: 6px 0;
-  font-size: 14px;
-}
-.analytics-label {
-  color: var(--text-secondary, #6b7280);
-}
-.analytics-value {
-  font-weight: 500;
-  color: var(--text-primary);
-}
-.analytics-value small {
-  color: var(--text-muted);
-  font-weight: 400;
-  margin-left: 6px;
-}
-.readability-meter {
-  height: 4px;
-  background: var(--bg-tertiary, #f3f4f6);
-  border-radius: 2px;
-  margin-top: 8px;
-  overflow: hidden;
-}
-.readability-fill {
-  height: 100%;
-  background: linear-gradient(90deg, #ef4444, #f59e0b, #10b981);
-  border-radius: 2px;
-  transition: width 0.5s ease;
-}
-.word-cloud {
-  display: flex;
-  flex-wrap: wrap;
-  gap: 8px;
-  margin-top: 8px;
-}
-.word-tag {
-  background: var(--bg-tertiary, #f3f4f6);
-  padding: 4px 10px;
-  border-radius: 12px;
-  font-size: 13px;
-  color: var(--text-secondary);
-}
-.word-tag small {
-  opacity: 0.5;
-  font-size: 10px;
-  margin-left: 2px;
-}
-.analytics-longest {
-  flex-direction: column;
-  gap: 4px;
-}
-.analytics-sentence-preview {
-  font-style: italic;
-  font-size: 13px;
-  color: var(--text-secondary);
-  font-weight: 400;
-}
-@keyframes analyticsFadeIn {
-  from {
-    opacity: 0;
-  }
-  to {
-    opacity: 1;
-  }
-}
-@keyframes analyticsSlideUp {
-  from {
-    transform: translateY(16px);
-    opacity: 0;
-  }
-  to {
-    transform: translateY(0);
-    opacity: 1;
-  }
-}
-body[class*='dark'] .analytics-modal {
-  background: var(--gray-800, #1f2937);
-}
-body[class*='dark'] .word-tag {
-  background: var(--gray-700, #374151);
-}
+.analytics-overlay { position:fixed; inset:0; background:rgba(0,0,0,0.5); backdrop-filter:blur(4px); display:flex; align-items:center; justify-content:center; z-index:10000; animation:analyticsFadeIn 0.2s ease; }
+.analytics-modal { background:var(--bg-primary,#fff); border-radius:12px; width:520px; max-height:80vh; overflow-y:auto; box-shadow:0 20px 60px rgba(0,0,0,0.3); animation:analyticsSlideUp 0.3s ease; }
+.analytics-header { display:flex; justify-content:space-between; align-items:center; padding:20px 24px; border-bottom:1px solid var(--border-color,#e5e7eb); }
+.analytics-header h2 { margin:0; font-size:18px; font-weight:600; color:var(--text-primary); }
+.analytics-close { background:none; border:none; font-size:24px; cursor:pointer; color:var(--text-muted); padding:4px 8px; border-radius:4px; }
+.analytics-close:hover { background:var(--bg-tertiary); color:var(--text-primary); }
+.analytics-body { padding:16px 24px 24px; }
+.analytics-section { margin-bottom:20px; }
+.analytics-section h3 { font-size:12px; font-weight:600; text-transform:uppercase; letter-spacing:0.05em; color:var(--text-muted,#9ca3af); margin:0 0 10px; }
+.analytics-row { display:flex; justify-content:space-between; align-items:baseline; padding:6px 0; font-size:14px; }
+.analytics-label { color:var(--text-secondary,#6b7280); }
+.analytics-value { font-weight:500; color:var(--text-primary); }
+.analytics-value small { color:var(--text-muted); font-weight:400; margin-left:6px; }
+.readability-meter { height:4px; background:var(--bg-tertiary,#f3f4f6); border-radius:2px; margin-top:8px; overflow:hidden; }
+.readability-fill { height:100%; background:linear-gradient(90deg,#ef4444,#f59e0b,#10b981); border-radius:2px; transition:width 0.5s ease; }
+.word-cloud { display:flex; flex-wrap:wrap; gap:8px; margin-top:8px; }
+.word-tag { background:var(--bg-tertiary,#f3f4f6); padding:4px 10px; border-radius:12px; font-size:13px; color:var(--text-secondary); }
+.word-tag small { opacity:0.5; font-size:10px; margin-left:2px; }
+.analytics-longest { flex-direction:column; gap:4px; }
+.analytics-sentence-preview { font-style:italic; font-size:13px; color:var(--text-secondary); font-weight:400; }
+@keyframes analyticsFadeIn { from{opacity:0} to{opacity:1} }
+@keyframes analyticsSlideUp { from{transform:translateY(16px);opacity:0} to{transform:translateY(0);opacity:1} }
+body[class*="dark"] .analytics-modal { background:var(--gray-800,#1f2937); }
+body[class*="dark"] .word-tag { background:var(--gray-700,#374151); }

 /* ========================================
   Interactive PDF Thumbnail Sidebar Styles
@@ -2583,7 +2449,7 @@ body[class*='dark'] .word-tag {
 }

 .pdf-thumbnail-card.marked-delete::after {
-  content: 'DELETE';
+  content: "DELETE";
  position: absolute;
  top: 50%;
  left: 50%;
@@ -2738,21 +2604,21 @@ body[class*='dark'] .word-tag {
 }

 /* Dark mode adjustments */
-body[class*='dark'] .pdf-thumbnail-card {
+body[class*="dark"] .pdf-thumbnail-card {
  background: var(--gray-800, #1f2937);
  border-color: var(--gray-700, #374151);
 }
-body[class*='dark'] .pdf-thumbnail-header .badge {
+body[class*="dark"] .pdf-thumbnail-header .badge {
  background: var(--gray-700, #374151);
  color: var(--gray-200);
 }
-body[class*='dark'] .canvas-container {
+body[class*="dark"] .canvas-container {
  background: var(--gray-900, #111827);
  border-color: var(--gray-700);
 }
-body[class*='dark'] .btn-rotate-thumbnail,
-body[class*='dark'] .btn-reorder-left,
-body[class*='dark'] .btn-reorder-right {
+body[class*="dark"] .btn-rotate-thumbnail,
+body[class*="dark"] .btn-reorder-left,
+body[class*="dark"] .btn-reorder-right {
  background: var(--gray-700, #374151);
  border-color: var(--gray-600);
  color: var(--gray-200);
@@ -1,523 +1,304 @@
 /* Sidebar */
 .main-content {
-  display: flex;
-  flex: 1;
-  overflow: hidden;
-  min-height: 0;
+    display: flex;
+    flex: 1;
+    overflow: hidden;
+    min-height: 0;
 }

 .sidebar {
-  display: flex;
-  flex-shrink: 0;
-  height: 100%;
-  transition: width 0.2s ease;
+    display: flex;
+    flex-shrink: 0;
+    height: 100%;
+    transition: width 0.2s ease;
 }

 .sidebar.collapsed {
-  width: 48px;
+    width: 48px;
 }

 .sidebar:not(.collapsed) {
-  width: 328px; /* 48px icons + 280px panel */
+    width: 328px; /* 48px icons + 280px panel */
 }

 .sidebar-icons {
-  display: flex;
-  flex-direction: column;
-  width: 48px;
-  background: var(--gray-100, #f3f4f6);
-  border-right: 1px solid var(--gray-200, #e5e7eb);
-  padding: 8px 0;
-  gap: 4px;
-  align-items: center;
+    display: flex;
+    flex-direction: column;
+    width: 48px;
+    background: var(--gray-100, #f3f4f6);
+    border-right: 1px solid var(--gray-200, #e5e7eb);
+    padding: 8px 0;
+    gap: 4px;
+    align-items: center;
 }

 .sidebar-icon {
-  width: 36px;
-  height: 36px;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  border: none;
-  background: transparent;
-  border-radius: 8px;
-  cursor: pointer;
-  color: var(--gray-500, #6b7280);
-  transition: all 0.15s ease;
+    width: 36px;
+    height: 36px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    border: none;
+    background: transparent;
+    border-radius: 8px;
+    cursor: pointer;
+    color: var(--gray-500, #6b7280);
+    transition: all 0.15s ease;
 }

 .sidebar-icon:hover {
-  background: var(--gray-200, #e5e7eb);
-  color: var(--gray-700, #374151);
+    background: var(--gray-200, #e5e7eb);
+    color: var(--gray-700, #374151);
 }

 .sidebar-icon.active {
-  background: var(--gray-200, #e5e7eb);
-  color: var(--primary-dark, #5661b3);
-  box-shadow: inset 3px 0 0 var(--primary-dark, #5661b3);
+    background: var(--gray-200, #e5e7eb);
+    color: var(--primary-dark, #5661b3);
+    box-shadow: inset 3px 0 0 var(--primary-dark, #5661b3);
 }

 .sidebar-icon:focus-visible {
-  outline: 2px solid var(--primary-dark, #5661b3);
-  outline-offset: 2px;
+    outline: 2px solid var(--primary-dark, #5661b3);
+    outline-offset: 2px;
 }

 .sidebar-panel {
-  width: 280px;
-  background: var(--gray-50, #f9fafb);
-  border-right: 1px solid var(--gray-200, #e5e7eb);
-  display: flex;
-  flex-direction: column;
-  overflow: hidden;
+    width: 280px;
+    background: var(--gray-50, #f9fafb);
+    border-right: 1px solid var(--gray-200, #e5e7eb);
+    display: flex;
+    flex-direction: column;
+    overflow: hidden;
 }

 .sidebar.collapsed .sidebar-panel {
-  display: none;
+    display: none;
 }

 .sidebar-panel-header {
-  display: flex;
-  align-items: center;
-  justify-content: space-between;
-  padding: 12px 16px;
-  border-bottom: 1px solid var(--gray-200, #e5e7eb);
-  font-weight: 600;
-  font-size: 13px;
-  text-transform: uppercase;
-  letter-spacing: 0.05em;
-  color: var(--gray-600, #4b5563);
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    padding: 12px 16px;
+    border-bottom: 1px solid var(--gray-200, #e5e7eb);
+    font-weight: 600;
+    font-size: 13px;
+    text-transform: uppercase;
+    letter-spacing: 0.05em;
+    color: var(--gray-600, #4b5563);
 }

 .sidebar-panel-close {
-  background: none;
-  border: none;
-  font-size: 18px;
-  cursor: pointer;
-  color: var(--gray-400, #9ca3af);
-  padding: 0 4px;
-  border-radius: 4px;
+    background: none;
+    border: none;
+    font-size: 18px;
+    cursor: pointer;
+    color: var(--gray-400, #9ca3af);
+    padding: 0 4px;
+    border-radius: 4px;
 }

 .sidebar-panel-close:hover {
-  background: var(--gray-200, #e5e7eb);
-  color: var(--gray-600, #4b5563);
+    background: var(--gray-200, #e5e7eb);
+    color: var(--gray-600, #4b5563);
 }

 .sidebar-panel-close:focus-visible {
-  outline: 2px solid var(--primary-dark, #5661b3);
-  outline-offset: 2px;
+    outline: 2px solid var(--primary-dark, #5661b3);
+    outline-offset: 2px;
 }

 .sidebar-panel-content {
-  flex: 1;
-  overflow-y: auto;
-  padding: 12px;
+    flex: 1;
+    overflow-y: auto;
+    padding: 12px;
 }

 /* Dark theme support */
-body[class*='dark'] .sidebar-icons,
-body[class*='dark'] .sidebar-panel {
-  background: #1e1e1e;
-  border-color: #333;
+body[class*="dark"] .sidebar-icons,
+body[class*="dark"] .sidebar-panel {
+    background: #1e1e1e;
+    border-color: #333;
 }

-body[class*='dark'] .sidebar-icon {
-  color: #888;
+body[class*="dark"] .sidebar-icon {
+    color: #888;
 }

-body[class*='dark'] .sidebar-icon:hover {
-  background: #333;
-  color: #ccc;
+body[class*="dark"] .sidebar-icon:hover {
+    background: #333;
+    color: #ccc;
 }

-body[class*='dark'] .sidebar-icon.active {
-  background: #333;
-  color: #8b9aff;
-  box-shadow: inset 3px 0 0 #8b9aff;
+body[class*="dark"] .sidebar-icon.active {
+    background: #333;
+    color: #8b9aff;
+    box-shadow: inset 3px 0 0 #8b9aff;
 }

-body[class*='dark'] .sidebar-panel-header {
-  border-color: #333;
-  color: #ccc;
+body[class*="dark"] .sidebar-panel-header {
+    border-color: #333;
+    color: #ccc;
 }

 /* Panel list items (templates, etc.) */
 .panel-list-item {
-  padding: 10px 12px;
-  border-radius: 6px;
-  cursor: pointer;
-  margin-bottom: 4px;
+    padding: 10px 12px;
+    border-radius: 6px;
+    cursor: pointer;
+    margin-bottom: 4px;
 }
 .panel-list-item:hover {
-  background: var(--gray-200, #e5e7eb);
+    background: var(--gray-200, #e5e7eb);
 }
 .panel-list-item-title {
-  font-size: 13px;
-  font-weight: 500;
-  color: var(--gray-800, #1f2937);
+    font-size: 13px;
+    font-weight: 500;
+    color: var(--gray-800, #1f2937);
 }
 .panel-list-item-desc {
-  font-size: 11px;
-  color: var(--gray-500, #6b7280);
-  margin-top: 2px;
+    font-size: 11px;
+    color: var(--gray-500, #6b7280);
+    margin-top: 2px;
 }

-body[class*='dark'] .panel-list-item:hover {
-  background: #333;
+body[class*="dark"] .panel-list-item:hover {
+    background: #333;
 }
-body[class*='dark'] .panel-list-item-title {
-  color: #ddd;
+body[class*="dark"] .panel-list-item-title {
+    color: #ddd;
 }
-body[class*='dark'] .panel-list-item-desc {
-  color: #888;
+body[class*="dark"] .panel-list-item-desc {
+    color: #888;
 }

 /* Explorer Panel */
 .explorer-toolbar {
-  display: flex;
-  gap: 4px;
-  margin-bottom: 8px;
+    display: flex;
+    gap: 4px;
+    margin-bottom: 8px;
 }
 .explorer-path {
-  flex: 1;
-  padding: 6px 8px;
-  border: 1px solid var(--gray-300, #d1d5db);
-  border-radius: 6px;
-  font-size: 12px;
-  background: white;
-  overflow: hidden;
-  text-overflow: ellipsis;
+    flex: 1;
+    padding: 6px 8px;
+    border: 1px solid var(--gray-300, #d1d5db);
+    border-radius: 6px;
+    font-size: 12px;
+    background: white;
+    overflow: hidden;
+    text-overflow: ellipsis;
 }
 .explorer-browse-btn {
-  border: 1px solid var(--gray-300, #d1d5db);
-  border-radius: 6px;
-  background: white;
-  cursor: pointer;
-  padding: 4px 8px;
+    border: 1px solid var(--gray-300, #d1d5db);
+    border-radius: 6px;
+    background: white;
+    cursor: pointer;
+    padding: 4px 8px;
 }
 .tree-item {
-  padding: 3px 0;
-  cursor: pointer;
-  font-size: 13px;
-  user-select: none;
+    padding: 3px 0;
+    cursor: pointer;
+    font-size: 13px;
+    user-select: none;
 }
 .tree-item:hover {
-  background: var(--gray-100, #f3f4f6);
-  border-radius: 4px;
+    background: var(--gray-100, #f3f4f6);
+    border-radius: 4px;
 }
 .tree-icon {
-  margin-right: 4px;
-  font-size: 12px;
+    margin-right: 4px;
+    font-size: 12px;
 }
 .tree-children {
-  padding-left: 16px;
+    padding-left: 16px;
 }
 .tree-folder.collapsed .tree-children {
-  display: none;
+    display: none;
 }
 .tree-name {
-  font-size: 13px;
+    font-size: 13px;
 }

 /* Git Panel */
-.git-section {
-  margin-bottom: 16px;
-}
-.git-section-title {
-  font-size: 11px;
-  text-transform: uppercase;
-  letter-spacing: 0.05em;
-  color: var(--gray-500);
-  margin-bottom: 8px;
-}
-.git-file {
-  display: flex;
-  align-items: center;
-  padding: 4px 6px;
-  border-radius: 4px;
-  font-size: 13px;
-  gap: 6px;
-}
-.git-file:hover {
-  background: var(--gray-100, #f3f4f6);
-}
-.git-file-status {
-  font-weight: 700;
-  font-family: monospace;
-  width: 16px;
-  text-align: center;
-}
-.git-file-name {
-  flex: 1;
-  overflow: hidden;
-  text-overflow: ellipsis;
-  white-space: nowrap;
-}
-.git-stage-btn {
-  border: none;
-  background: var(--gray-200);
-  border-radius: 4px;
-  cursor: pointer;
-  font-size: 14px;
-  width: 22px;
-  height: 22px;
-}
-.git-commit-input {
-  width: 100%;
-  padding: 8px;
-  border: 1px solid var(--gray-300);
-  border-radius: 6px;
-  font-size: 13px;
-  font-family: inherit;
-  resize: vertical;
-  box-sizing: border-box;
-}
-.git-commit-btn {
-  width: 100%;
-  margin-top: 8px;
-  padding: 8px;
-  background: var(--primary-dark, #5661b3);
-  color: white;
-  border: none;
-  border-radius: 6px;
-  font-size: 13px;
-  cursor: pointer;
-}
-.git-commit-btn:hover {
-  opacity: 0.9;
-}
-.git-log-entry {
-  padding: 6px 0;
-  border-bottom: 1px solid var(--gray-100);
-}
-.git-log-msg {
-  font-size: 13px;
-}
-.git-log-meta {
-  font-size: 11px;
-  color: var(--gray-500);
-  margin-top: 2px;
-}
-.git-info {
-  font-size: 13px;
-  color: var(--gray-500);
-  padding: 8px 0;
-}
-.git-loading {
-  font-size: 13px;
-  color: var(--gray-400);
-}
+.git-section { margin-bottom: 16px; }
+.git-section-title { font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--gray-500); margin-bottom: 8px; }
+.git-file { display: flex; align-items: center; padding: 4px 6px; border-radius: 4px; font-size: 13px; gap: 6px; }
+.git-file:hover { background: var(--gray-100, #f3f4f6); }
+.git-file-status { font-weight: 700; font-family: monospace; width: 16px; text-align: center; }
+.git-file-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.git-stage-btn { border: none; background: var(--gray-200); border-radius: 4px; cursor: pointer; font-size: 14px; width: 22px; height: 22px; }
+.git-commit-input { width: 100%; padding: 8px; border: 1px solid var(--gray-300); border-radius: 6px; font-size: 13px; font-family: inherit; resize: vertical; box-sizing: border-box; }
+.git-commit-btn { width: 100%; margin-top: 8px; padding: 8px; background: var(--primary-dark, #5661b3); color: white; border: none; border-radius: 6px; font-size: 13px; cursor: pointer; }
+.git-commit-btn:hover { opacity: 0.9; }
+.git-log-entry { padding: 6px 0; border-bottom: 1px solid var(--gray-100); }
+.git-log-msg { font-size: 13px; }
+.git-log-meta { font-size: 11px; color: var(--gray-500); margin-top: 2px; }
+.git-info { font-size: 13px; color: var(--gray-500); padding: 8px 0; }
+.git-loading { font-size: 13px; color: var(--gray-400); }

 /* Snippets Panel */
-.snippets-toolbar {
-  display: flex;
-  gap: 4px;
-  margin-bottom: 8px;
-}
-.snippets-search {
-  flex: 1;
-  padding: 6px 10px;
-  border: 1px solid var(--gray-300);
-  border-radius: 6px;
-  font-size: 13px;
-}
-.snippets-add-btn {
-  width: 32px;
-  border: 1px solid var(--gray-300);
-  border-radius: 6px;
-  background: white;
-  font-size: 18px;
-  cursor: pointer;
-}
-.snippet-item {
-  padding: 8px;
-  border: 1px solid var(--gray-200);
-  border-radius: 6px;
-  margin-bottom: 6px;
-}
-.snippet-header {
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-  margin-bottom: 4px;
-}
-.snippet-name {
-  font-size: 13px;
-  font-weight: 500;
-}
-.snippet-lang {
-  font-size: 11px;
-  background: var(--gray-100);
-  padding: 2px 6px;
-  border-radius: 4px;
-  color: var(--gray-500);
-}
-.snippet-preview {
-  font-size: 12px;
-  background: var(--gray-50);
-  padding: 6px;
-  border-radius: 4px;
-  margin: 4px 0;
-  overflow: hidden;
-  max-height: 60px;
-}
-.snippet-preview code {
-  font-family: 'JetBrains Mono', monospace;
-}
-.snippet-actions {
-  display: flex;
-  gap: 4px;
-}
-.snippet-insert {
-  font-size: 12px;
-  padding: 4px 8px;
-  border: 1px solid var(--gray-300);
-  border-radius: 4px;
-  background: white;
-  cursor: pointer;
-}
-.snippet-delete {
-  font-size: 14px;
-  padding: 4px 8px;
-  border: 1px solid var(--gray-300);
-  border-radius: 4px;
-  background: white;
-  cursor: pointer;
-  color: #ef4444;
-}
+.snippets-toolbar { display: flex; gap: 4px; margin-bottom: 8px; }
+.snippets-search { flex: 1; padding: 6px 10px; border: 1px solid var(--gray-300); border-radius: 6px; font-size: 13px; }
+.snippets-add-btn { width: 32px; border: 1px solid var(--gray-300); border-radius: 6px; background: white; font-size: 18px; cursor: pointer; }
+.snippet-item { padding: 8px; border: 1px solid var(--gray-200); border-radius: 6px; margin-bottom: 6px; }
+.snippet-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px; }
+.snippet-name { font-size: 13px; font-weight: 500; }
+.snippet-lang { font-size: 11px; background: var(--gray-100); padding: 2px 6px; border-radius: 4px; color: var(--gray-500); }
+.snippet-preview { font-size: 12px; background: var(--gray-50); padding: 6px; border-radius: 4px; margin: 4px 0; overflow: hidden; max-height: 60px; }
+.snippet-preview code { font-family: 'JetBrains Mono', monospace; }
+.snippet-actions { display: flex; gap: 4px; }
+.snippet-insert { font-size: 12px; padding: 4px 8px; border: 1px solid var(--gray-300); border-radius: 4px; background: white; cursor: pointer; }
+.snippet-delete { font-size: 14px; padding: 4px 8px; border: 1px solid var(--gray-300); border-radius: 4px; background: white; cursor: pointer; color: #ef4444; }

 /* Dark theme for sidebar panels */
-body[class*='dark'] .explorer-path,
-body[class*='dark'] .explorer-browse-btn,
-body[class*='dark'] .snippets-search,
-body[class*='dark'] .snippets-add-btn,
-body[class*='dark'] .snippet-insert,
-body[class*='dark'] .snippet-delete {
-  background: #2d2d2d;
-  border-color: #444;
-  color: #ccc;
+body[class*="dark"] .explorer-path,
+body[class*="dark"] .explorer-browse-btn,
+body[class*="dark"] .snippets-search,
+body[class*="dark"] .snippets-add-btn,
+body[class*="dark"] .snippet-insert,
+body[class*="dark"] .snippet-delete {
+    background: #2d2d2d;
+    border-color: #444;
+    color: #ccc;
 }
-body[class*='dark'] .git-commit-input {
-  background: #2d2d2d;
-  border-color: #444;
-  color: #ccc;
+body[class*="dark"] .git-commit-input {
+    background: #2d2d2d;
+    border-color: #444;
+    color: #ccc;
 }
-body[class*='dark'] .snippet-item {
-  border-color: #444;
+body[class*="dark"] .snippet-item {
+    border-color: #444;
 }
-body[class*='dark'] .snippet-preview {
-  background: #2d2d2d;
+body[class*="dark"] .snippet-preview {
+    background: #2d2d2d;
 }
-body[class*='dark'] .tree-item:hover,
-body[class*='dark'] .git-file:hover {
-  background: #333;
+body[class*="dark"] .tree-item:hover,
+body[class*="dark"] .git-file:hover {
+    background: #333;
 }

 /* Outline Panel */
-.outline-panel {
-  display: flex;
-  flex-direction: column;
-  height: 100%;
-}
-.outline-list {
-  flex: 1;
-  overflow-y: auto;
-  padding: 4px 0;
-}
-.outline-item {
-  display: flex;
-  align-items: center;
-  justify-content: space-between;
-  padding: 4px 12px;
-  cursor: pointer;
-  font-size: 13px;
-  color: var(--text-secondary, #6b7280);
-  transition:
-    background 0.15s,
-    color 0.15s;
-  border-left: 2px solid transparent;
-}
-.outline-item:hover {
-  background: var(--bg-tertiary, #f3f4f6);
-  color: var(--text-primary, #1f2937);
-}
-.outline-item.active {
-  color: var(--accent-blue, #3b82f6);
-  background: rgba(59, 130, 246, 0.08);
-  border-left-color: var(--accent-blue, #3b82f6);
-  font-weight: 600;
-}
-.outline-level-1 {
-  padding-left: 12px;
-}
-.outline-level-2 {
-  padding-left: 24px;
-}
-.outline-level-3 {
-  padding-left: 36px;
-}
-.outline-level-4 {
-  padding-left: 48px;
-}
-.outline-level-5 {
-  padding-left: 56px;
-}
-.outline-level-6 {
-  padding-left: 64px;
-}
-.outline-text {
-  flex: 1;
-  overflow: hidden;
-  text-overflow: ellipsis;
-  white-space: nowrap;
-}
-.outline-badge {
-  font-size: 10px;
-  opacity: 0.5;
-  margin-left: 8px;
-  flex-shrink: 0;
-}
-.outline-empty {
-  display: flex;
-  flex-direction: column;
-  align-items: center;
-  justify-content: center;
-  padding: 32px 16px;
-  color: var(--text-muted, #9ca3af);
-  text-align: center;
-}
-.outline-empty p {
-  margin: 4px 0;
-}
-.outline-hint {
-  font-family: monospace;
-  font-size: 12px;
-  opacity: 0.7;
-}
-.outline-footer {
-  padding: 8px 12px;
-  border-top: 1px solid var(--border-color, #e5e7eb);
-  font-size: 11px;
-  color: var(--text-muted, #9ca3af);
-}
+.outline-panel { display: flex; flex-direction: column; height: 100%; }
+.outline-list { flex: 1; overflow-y: auto; padding: 4px 0; }
+.outline-item { display: flex; align-items: center; justify-content: space-between; padding: 4px 12px; cursor: pointer; font-size: 13px; color: var(--text-secondary, #6b7280); transition: background 0.15s, color 0.15s; border-left: 2px solid transparent; }
+.outline-item:hover { background: var(--bg-tertiary, #f3f4f6); color: var(--text-primary, #1f2937); }
+.outline-item.active { color: var(--accent-blue, #3b82f6); background: rgba(59, 130, 246, 0.08); border-left-color: var(--accent-blue, #3b82f6); font-weight: 600; }
+.outline-level-1 { padding-left: 12px; }
+.outline-level-2 { padding-left: 24px; }
+.outline-level-3 { padding-left: 36px; }
+.outline-level-4 { padding-left: 48px; }
+.outline-level-5 { padding-left: 56px; }
+.outline-level-6 { padding-left: 64px; }
+.outline-text { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.outline-badge { font-size: 10px; opacity: 0.5; margin-left: 8px; flex-shrink: 0; }
+.outline-empty { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 32px 16px; color: var(--text-muted, #9ca3af); text-align: center; }
+.outline-empty p { margin: 4px 0; }
+.outline-hint { font-family: monospace; font-size: 12px; opacity: 0.7; }
+.outline-footer { padding: 8px 12px; border-top: 1px solid var(--border-color, #e5e7eb); font-size: 11px; color: var(--text-muted, #9ca3af); }

 /* Outline dark mode */
-body[class*='dark'] .outline-item {
-  color: #9ca3af;
-}
-body[class*='dark'] .outline-item:hover {
-  background: #374151;
-  color: #e5e7eb;
-}
-body[class*='dark'] .outline-item.active {
-  color: #8b9aff;
-  background: rgba(139, 154, 255, 0.1);
-  border-left-color: #8b9aff;
-}
-body[class*='dark'] .outline-empty {
-  color: #6b7280;
-}
-body[class*='dark'] .outline-footer {
-  border-color: #333;
-  color: #6b7280;
-}
+body[class*="dark"] .outline-item { color: #9ca3af; }
+body[class*="dark"] .outline-item:hover { background: #374151; color: #e5e7eb; }
+body[class*="dark"] .outline-item.active { color: #8b9aff; background: rgba(139, 154, 255, 0.1); border-left-color: #8b9aff; }
+body[class*="dark"] .outline-empty { color: #6b7280; }
+body[class*="dark"] .outline-footer { border-color: #333; color: #6b7280; }
@@ -1,121 +1,24 @@
-.welcome-container {
-  padding: 40px;
-  max-width: 900px;
-  margin: 0 auto;
-}
-.welcome-hero {
-  text-align: center;
-  margin-bottom: 40px;
-}
-.welcome-title {
-  font-size: 32px;
-  font-weight: 700;
-  color: var(--gray-800, #1f2937);
-}
-.welcome-version {
-  font-size: 14px;
-  color: var(--primary-dark, #5661b3);
-  margin-top: 4px;
-  font-weight: 500;
-}
-.welcome-subtitle {
-  font-size: 16px;
-  color: var(--gray-500, #6b7280);
-  margin-top: 8px;
-}
-.welcome-grid {
-  display: grid;
-  gap: 32px;
-}
-.welcome-section h2 {
-  font-size: 18px;
-  margin-bottom: 16px;
-  color: var(--gray-700, #374151);
-}
-.welcome-cards {
-  display: grid;
-  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
-  gap: 12px;
-}
-.welcome-card {
-  padding: 20px;
-  border: 1px solid var(--gray-200, #e5e7eb);
-  border-radius: 12px;
-  cursor: pointer;
-  text-align: center;
-  transition: all 0.2s;
-}
-.welcome-card:hover {
-  border-color: var(--primary-dark, #5661b3);
-  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
-  transform: translateY(-2px);
-}
-.welcome-card-icon {
-  font-size: 28px;
-  margin-bottom: 8px;
-}
-.welcome-card h3 {
-  font-size: 15px;
-  margin-bottom: 4px;
-}
-.welcome-card p {
-  font-size: 13px;
-  color: var(--gray-500);
-}
-.welcome-card kbd {
-  display: inline-block;
-  margin-top: 8px;
-  padding: 2px 8px;
-  background: var(--gray-100);
-  border: 1px solid var(--gray-300);
-  border-radius: 4px;
-  font-size: 12px;
-  font-family: 'JetBrains Mono', monospace;
-}
-.welcome-features {
-  list-style: none;
-  padding: 0;
-}
-.welcome-features li {
-  padding: 6px 0;
-  font-size: 14px;
-  border-bottom: 1px solid var(--gray-100, #f3f4f6);
-}
-.welcome-features strong {
-  color: var(--primary-dark, #5661b3);
-}
-.welcome-recent-item {
-  padding: 8px 12px;
-  border-radius: 6px;
-  cursor: pointer;
-  margin-bottom: 4px;
-}
-.welcome-recent-item:hover {
-  background: var(--gray-100);
-}
-.welcome-recent-name {
-  font-size: 14px;
-  font-weight: 500;
-  display: block;
-}
-.welcome-recent-path {
-  font-size: 12px;
-  color: var(--gray-500);
-  display: block;
-  margin-top: 2px;
-  overflow: hidden;
-  text-overflow: ellipsis;
-}
-.welcome-muted {
-  color: var(--gray-400);
-  font-size: 14px;
-}
-.welcome-footer {
-  margin-top: 32px;
-  text-align: center;
-}
-.welcome-checkbox {
-  font-size: 13px;
-  color: var(--gray-500);
-  cursor: pointer;
-}
+.welcome-container { padding: 40px; max-width: 900px; margin: 0 auto; }
+.welcome-hero { text-align: center; margin-bottom: 40px; }
+.welcome-title { font-size: 32px; font-weight: 700; color: var(--gray-800, #1f2937); }
+.welcome-version { font-size: 14px; color: var(--primary-dark, #5661b3); margin-top: 4px; font-weight: 500; }
+.welcome-subtitle { font-size: 16px; color: var(--gray-500, #6b7280); margin-top: 8px; }
+.welcome-grid { display: grid; gap: 32px; }
+.welcome-section h2 { font-size: 18px; margin-bottom: 16px; color: var(--gray-700, #374151); }
+.welcome-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
+.welcome-card { padding: 20px; border: 1px solid var(--gray-200, #e5e7eb); border-radius: 12px; cursor: pointer; text-align: center; transition: all 0.2s; }
+.welcome-card:hover { border-color: var(--primary-dark, #5661b3); box-shadow: 0 4px 12px rgba(0,0,0,0.08); transform: translateY(-2px); }
+.welcome-card-icon { font-size: 28px; margin-bottom: 8px; }
+.welcome-card h3 { font-size: 15px; margin-bottom: 4px; }
+.welcome-card p { font-size: 13px; color: var(--gray-500); }
+.welcome-card kbd { display: inline-block; margin-top: 8px; padding: 2px 8px; background: var(--gray-100); border: 1px solid var(--gray-300); border-radius: 4px; font-size: 12px; font-family: 'JetBrains Mono', monospace; }
+.welcome-features { list-style: none; padding: 0; }
+.welcome-features li { padding: 6px 0; font-size: 14px; border-bottom: 1px solid var(--gray-100, #f3f4f6); }
+.welcome-features strong { color: var(--primary-dark, #5661b3); }
+.welcome-recent-item { padding: 8px 12px; border-radius: 6px; cursor: pointer; margin-bottom: 4px; }
+.welcome-recent-item:hover { background: var(--gray-100); }
+.welcome-recent-name { font-size: 14px; font-weight: 500; display: block; }
+.welcome-recent-path { font-size: 12px; color: var(--gray-500); display: block; margin-top: 2px; overflow: hidden; text-overflow: ellipsis; }
+.welcome-muted { color: var(--gray-400); font-size: 14px; }
+.welcome-footer { margin-top: 32px; text-align: center; }
+.welcome-checkbox { font-size: 13px; color: var(--gray-500); cursor: pointer; }
@@ -7,96 +7,96 @@ body.zen-mode .toolbar,
 body.zen-mode .status-bar,
 body.zen-mode .sidebar,
 body.zen-mode .breadcrumb-bar {
-  display: none !important;
+    display: none !important;
 }

 /* Main content fills viewport */
 body.zen-mode .main-content {
-  height: 100vh;
-  overflow: hidden;
+    height: 100vh;
+    overflow: hidden;
 }

 /* Editor container takes full width */
 body.zen-mode .editor-container {
-  width: 100% !important;
-  height: 100% !important;
+    width: 100% !important;
+    height: 100% !important;
 }

 /* Hide preview panes */
 body.zen-mode .preview-container,
 body.zen-mode .preview-pane,
 body.zen-mode .pane-resizer {
-  display: none !important;
+    display: none !important;
 }

 /* Center and style editor content for comfortable reading width */
 body.zen-mode .cm-content {
-  max-width: 700px;
-  margin: 0 auto;
-  font-size: 18px;
-  line-height: 1.8;
-  padding-top: 80px;
+    max-width: 700px;
+    margin: 0 auto;
+    font-size: 18px;
+    line-height: 1.8;
+    padding-top: 80px;
 }

 body.zen-mode .cm-line {
-  padding: 4px 0;
+    padding: 4px 0;
 }

 body.zen-mode .editor-wrapper {
-  display: flex;
-  justify-content: center;
+    display: flex;
+    justify-content: center;
 }

 /* Floating HUD pill */
 .zen-hud {
-  position: fixed;
-  bottom: 24px;
-  left: 50%;
-  transform: translateX(-50%);
-  background: rgba(0, 0, 0, 0.6);
-  backdrop-filter: blur(12px);
-  -webkit-backdrop-filter: blur(12px);
-  color: rgba(255, 255, 255, 0.8);
-  padding: 10px 24px;
-  border-radius: 24px;
-  font-size: 13px;
-  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
-  z-index: 9999;
-  pointer-events: none;
-  display: flex;
-  align-items: center;
-  gap: 16px;
-  transition: opacity 0.3s ease;
+    position: fixed;
+    bottom: 24px;
+    left: 50%;
+    transform: translateX(-50%);
+    background: rgba(0, 0, 0, 0.6);
+    backdrop-filter: blur(12px);
+    -webkit-backdrop-filter: blur(12px);
+    color: rgba(255, 255, 255, 0.8);
+    padding: 10px 24px;
+    border-radius: 24px;
+    font-size: 13px;
+    font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
+    z-index: 9999;
+    pointer-events: none;
+    display: flex;
+    align-items: center;
+    gap: 16px;
+    transition: opacity 0.3s ease;
 }

 .zen-hud-stat {
-  opacity: 0.7;
+    opacity: 0.7;
 }

 .zen-hud-sep {
-  opacity: 0.3;
-  margin: 0 4px;
+    opacity: 0.3;
+    margin: 0 4px;
 }

 /* Word goal progress bar */
 .zen-progress-container {
-  width: 120px;
-  height: 4px;
-  background: rgba(255, 255, 255, 0.15);
-  border-radius: 2px;
-  margin-top: 8px;
-  overflow: hidden;
-  display: none;
+    width: 120px;
+    height: 4px;
+    background: rgba(255, 255, 255, 0.15);
+    border-radius: 2px;
+    margin-top: 8px;
+    overflow: hidden;
+    display: none;
 }

 .zen-progress-bar {
-  height: 100%;
-  background: rgba(255, 178, 70, 0.85);
-  border-radius: 2px;
-  transition: width 0.3s ease;
+    height: 100%;
+    background: rgba(255, 178, 70, 0.85);
+    border-radius: 2px;
+    transition: width 0.3s ease;
 }

 /* Dark mode — HUD stays dark in both themes */
-body[class*='dark'].zen-mode .zen-hud {
-  background: rgba(0, 0, 0, 0.7);
+body[class*="dark"].zen-mode .zen-hud {
+    background: rgba(0, 0, 0, 0.7);
 }
@@ -9,13 +9,13 @@
 * ============================================ */

 .modal-backdrop {
-  position: fixed;
-  inset: 0;
-  background: rgba(0, 0, 0, 0.4);
-  backdrop-filter: blur(4px);
-  -webkit-backdrop-filter: blur(4px);
-  z-index: 0;
-  cursor: pointer;
+    position: fixed;
+    inset: 0;
+    background: rgba(0, 0, 0, 0.4);
+    backdrop-filter: blur(4px);
+    -webkit-backdrop-filter: blur(4px);
+    z-index: 0;
+    cursor: pointer;
 }

 /* ============================================
@@ -23,23 +23,22 @@
 * ============================================ */

 .modal {
-  position: fixed;
-  inset: 0;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  z-index: calc(var(--z-modal, 200) + 1);
-  opacity: 0;
-  visibility: hidden;
-  transition:
-    opacity var(--transition-normal, 200ms cubic-bezier(0.4, 0, 0.2, 1)),
-    visibility var(--transition-normal, 200ms cubic-bezier(0.4, 0, 0.2, 1));
-  padding: var(--spacing-4, 1rem);
+    position: fixed;
+    inset: 0;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    z-index: calc(var(--z-modal, 200) + 1);
+    opacity: 0;
+    visibility: hidden;
+    transition: opacity var(--transition-normal, 200ms cubic-bezier(0.4, 0, 0.2, 1)),
+                visibility var(--transition-normal, 200ms cubic-bezier(0.4, 0, 0.2, 1));
+    padding: var(--spacing-4, 1rem);
 }

 .modal.open {
-  opacity: 1;
-  visibility: visible;
+    opacity: 1;
+    visibility: visible;
 }

 /* ============================================
@@ -47,23 +46,23 @@
 * ============================================ */

 .modal-content {
-  position: relative;
-  z-index: 1;
-  width: 100%;
-  background: hsl(var(--background, 0 0% 100%));
-  border-radius: var(--radius-lg, 0.5rem);
-  box-shadow: var(--shadow-xl, 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1));
-  max-width: 90vw;
-  max-height: 90vh;
-  overflow: hidden;
-  display: flex;
-  flex-direction: column;
-  transform: scale(0.95);
-  transition: transform var(--transition-normal, 200ms cubic-bezier(0.4, 0, 0.2, 1));
+    position: relative;
+    z-index: 1;
+    width: 100%;
+    background: hsl(var(--background, 0 0% 100%));
+    border-radius: var(--radius-lg, 0.5rem);
+    box-shadow: var(--shadow-xl, 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1));
+    max-width: 90vw;
+    max-height: 90vh;
+    overflow: hidden;
+    display: flex;
+    flex-direction: column;
+    transform: scale(0.95);
+    transition: transform var(--transition-normal, 200ms cubic-bezier(0.4, 0, 0.2, 1));
 }

 .modal.open .modal-content {
-  transform: scale(1);
+    transform: scale(1);
 }

 /* ============================================
@@ -71,19 +70,19 @@
 * ============================================ */

 .modal-header {
-  display: flex;
-  align-items: center;
-  justify-content: space-between;
-  padding: var(--spacing-4, 1rem) var(--spacing-6, 1.5rem);
-  border-bottom: 1px solid hsl(var(--border, 214.3 31.8% 91.4%));
-  background: hsl(var(--muted, 210 40% 96.1%));
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    padding: var(--spacing-4, 1rem) var(--spacing-6, 1.5rem);
+    border-bottom: 1px solid hsl(var(--border, 214.3 31.8% 91.4%));
+    background: hsl(var(--muted, 210 40% 96.1%));
 }

 .modal-header h3 {
-  margin: 0;
-  font-size: var(--text-lg, 1.125rem);
-  font-weight: var(--font-semibold, 600);
-  color: hsl(var(--foreground, 222.2 84% 4.9%));
+    margin: 0;
+    font-size: var(--text-lg, 1.125rem);
+    font-weight: var(--font-semibold, 600);
+    color: hsl(var(--foreground, 222.2 84% 4.9%));
 }

 /* ============================================
@@ -91,32 +90,31 @@
 * ============================================ */

 .modal-close {
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  width: 32px;
-  height: 32px;
-  padding: 0;
-  border: none;
-  border-radius: var(--radius, 0.5rem);
-  background: transparent;
-  color: hsl(var(--muted-foreground, 215.4 16.3% 46.9%));
-  font-size: 24px;
-  line-height: 1;
-  cursor: pointer;
-  transition:
-    background-color var(--transition-fast, 150ms),
-    color var(--transition-fast, 150ms);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    width: 32px;
+    height: 32px;
+    padding: 0;
+    border: none;
+    border-radius: var(--radius, 0.5rem);
+    background: transparent;
+    color: hsl(var(--muted-foreground, 215.4 16.3% 46.9%));
+    font-size: 24px;
+    line-height: 1;
+    cursor: pointer;
+    transition: background-color var(--transition-fast, 150ms),
+                color var(--transition-fast, 150ms);
 }

 .modal-close:hover {
-  background: hsl(var(--accent, 210 40% 96.1%));
-  color: hsl(var(--foreground, 222.2 84% 4.9%));
+    background: hsl(var(--accent, 210 40% 96.1%));
+    color: hsl(var(--foreground, 222.2 84% 4.9%));
 }

 .modal-close:focus-visible {
-  outline: 2px solid hsl(var(--ring, 227 44% 52%));
-  outline-offset: 2px;
+    outline: 2px solid hsl(var(--ring, 227 44% 52%));
+    outline-offset: 2px;
 }

 /* ============================================
@@ -124,9 +122,9 @@
 * ============================================ */

 .modal-body {
-  padding: var(--spacing-6, 1.5rem);
-  overflow-y: auto;
-  flex: 1;
+    padding: var(--spacing-6, 1.5rem);
+    overflow-y: auto;
+    flex: 1;
 }

 /* ============================================
@@ -134,19 +132,19 @@
 * ============================================ */

 .modal-footer {
-  display: flex;
-  justify-content: flex-end;
-  gap: var(--spacing-3, 0.75rem);
-  padding: var(--spacing-4, 1rem) var(--spacing-6, 1.5rem);
-  border-top: 1px solid hsl(var(--border, 214.3 31.8% 91.4%));
-  background: hsl(var(--muted, 210 40% 96.1%));
+    display: flex;
+    justify-content: flex-end;
+    gap: var(--spacing-3, 0.75rem);
+    padding: var(--spacing-4, 1rem) var(--spacing-6, 1.5rem);
+    border-top: 1px solid hsl(var(--border, 214.3 31.8% 91.4%));
+    background: hsl(var(--muted, 210 40% 96.1%));
 }

 .modal-footer .btn {
-  min-width: 80px;
-  /* styles-modern.css sets flex:1 on .btn-primary/.btn-secondary globally
+    min-width: 80px;
+    /* styles-modern.css sets flex:1 on .btn-primary/.btn-secondary globally
     * which causes footer buttons to stretch to full width. Override here. */
-  flex: none;
+    flex: none;
 }

 /* ============================================
@@ -154,60 +152,60 @@
 * ============================================ */

 .modal-body .form-row {
-  display: flex;
-  align-items: center;
-  gap: var(--spacing-3, 0.75rem);
-  margin-bottom: var(--spacing-3, 0.75rem);
+    display: flex;
+    align-items: center;
+    gap: var(--spacing-3, 0.75rem);
+    margin-bottom: var(--spacing-3, 0.75rem);
 }

 .modal-body .form-row label {
-  min-width: 100px;
-  font-size: var(--text-sm, 0.875rem);
-  color: hsl(var(--foreground, 222.2 84% 4.9%));
+    min-width: 100px;
+    font-size: var(--text-sm, 0.875rem);
+    color: hsl(var(--foreground, 222.2 84% 4.9%));
 }

 .modal-body .form-row input,
 .modal-body .form-row select {
-  flex: 1;
-  padding: var(--spacing-2, 0.5rem) var(--spacing-3, 0.75rem);
-  border: 1px solid hsl(var(--input, 214.3 31.8% 91.4%));
-  border-radius: var(--radius, 0.5rem);
-  font-size: var(--text-sm, 0.875rem);
-  background: hsl(var(--background, 0 0% 100%));
-  color: hsl(var(--foreground, 222.2 84% 4.9%));
+    flex: 1;
+    padding: var(--spacing-2, 0.5rem) var(--spacing-3, 0.75rem);
+    border: 1px solid hsl(var(--input, 214.3 31.8% 91.4%));
+    border-radius: var(--radius, 0.5rem);
+    font-size: var(--text-sm, 0.875rem);
+    background: hsl(var(--background, 0 0% 100%));
+    color: hsl(var(--foreground, 222.2 84% 4.9%));
 }

 .modal-body .form-row input:focus,
 .modal-body .form-row select:focus {
-  outline: 2px solid hsl(var(--ring, 227 44% 52%));
-  outline-offset: 1px;
+    outline: 2px solid hsl(var(--ring, 227 44% 52%));
+    outline-offset: 1px;
 }

 .modal-body .export-section {
-  margin-bottom: var(--spacing-4, 1rem);
-  padding-bottom: var(--spacing-4, 1rem);
-  border-bottom: 1px solid hsl(var(--border, 214.3 31.8% 91.4%));
+    margin-bottom: var(--spacing-4, 1rem);
+    padding-bottom: var(--spacing-4, 1rem);
+    border-bottom: 1px solid hsl(var(--border, 214.3 31.8% 91.4%));
 }

 .modal-body .export-section:last-child {
-  border-bottom: none;
-  margin-bottom: 0;
+    border-bottom: none;
+    margin-bottom: 0;
 }

 .modal-body .export-section label {
-  display: block;
-  font-weight: var(--font-medium, 500);
-  margin-bottom: var(--spacing-2, 0.5rem);
-  color: hsl(var(--foreground, 222.2 84% 4.9%));
+    display: block;
+    font-weight: var(--font-medium, 500);
+    margin-bottom: var(--spacing-2, 0.5rem);
+    color: hsl(var(--foreground, 222.2 84% 4.9%));
 }

 .modal-body .checkbox-group label {
-  display: flex;
-  align-items: center;
-  gap: var(--spacing-2, 0.5rem);
-  margin-bottom: var(--spacing-2, 0.5rem);
-  font-weight: var(--font-normal, 400);
-  cursor: pointer;
+    display: flex;
+    align-items: center;
+    gap: var(--spacing-2, 0.5rem);
+    margin-bottom: var(--spacing-2, 0.5rem);
+    font-weight: var(--font-normal, 400);
+    cursor: pointer;
 }

 /* ============================================
@@ -215,19 +213,19 @@
 * ============================================ */

 .modal-content.small {
-  max-width: 400px;
-  min-width: 320px;
+    max-width: 400px;
+    min-width: 320px;
 }

 .modal-content.large {
-  max-width: 800px;
-  min-width: 560px;
+    max-width: 800px;
+    min-width: 560px;
 }

 .modal-content.full {
-  max-width: 95vw;
-  max-height: 95vh;
-  min-width: min(95vw, 700px);
+    max-width: 95vw;
+    max-height: 95vh;
+    min-width: min(95vw, 700px);
 }

 /* ============================================
@@ -235,18 +233,16 @@
 * ============================================ */

 .dark .modal-content,
-[data-theme='dark'] .modal-content {
-  background: hsl(var(--background));
-  box-shadow:
-    0 20px 25px -5px rgb(0 0 0 / 0.4),
-    0 8px 10px -6px rgb(0 0 0 / 0.3);
+[data-theme="dark"] .modal-content {
+    background: hsl(var(--background));
+    box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.4), 0 8px 10px -6px rgb(0 0 0 / 0.3);
 }

 .dark .modal-header,
 .dark .modal-footer,
-[data-theme='dark'] .modal-header,
-[data-theme='dark'] .modal-footer {
-  background: hsl(var(--muted));
+[data-theme="dark"] .modal-header,
+[data-theme="dark"] .modal-footer {
+    background: hsl(var(--muted));
 }

 /* ============================================
@@ -254,10 +250,10 @@
 * ============================================ */

@media (prefers-reduced-motion: reduce) {
-  .modal,
-  .modal-content {
-    transition: none;
-  }
+    .modal,
+    .modal-content {
+        transition: none;
+    }
 }

 /* ============================================
@@ -265,5 +261,5 @@
 * ============================================ */

 .modal.hidden {
-  display: none;
+    display: none;
 }
@@ -148,7 +148,7 @@
 * ============================================ */

 .dark,
-[data-theme='dark'] {
+[data-theme="dark"] {
  /* Background and foreground */
  --background: 222.2 84% 4.9%;
  --foreground: 210 40% 98%;
@@ -205,56 +205,24 @@
 * Semantic Color Classes
 * ============================================ */

-.bg-background {
-  background-color: hsl(var(--background));
-}
-.bg-foreground {
-  background-color: hsl(var(--foreground));
-}
-.bg-card {
-  background-color: hsl(var(--card));
-}
-.bg-primary {
-  background-color: hsl(var(--primary));
-}
-.bg-secondary {
-  background-color: hsl(var(--secondary));
-}
-.bg-muted {
-  background-color: hsl(var(--muted));
-}
-.bg-accent {
-  background-color: hsl(var(--accent));
-}
-.bg-destructive {
-  background-color: hsl(var(--destructive));
-}
+.bg-background { background-color: hsl(var(--background)); }
+.bg-foreground { background-color: hsl(var(--foreground)); }
+.bg-card { background-color: hsl(var(--card)); }
+.bg-primary { background-color: hsl(var(--primary)); }
+.bg-secondary { background-color: hsl(var(--secondary)); }
+.bg-muted { background-color: hsl(var(--muted)); }
+.bg-accent { background-color: hsl(var(--accent)); }
+.bg-destructive { background-color: hsl(var(--destructive)); }

-.text-foreground {
-  color: hsl(var(--foreground));
-}
-.text-primary {
-  color: hsl(var(--primary));
-}
-.text-secondary {
-  color: hsl(var(--secondary-foreground));
-}
-.text-muted-foreground {
-  color: hsl(var(--muted-foreground));
-}
-.text-destructive {
-  color: hsl(var(--destructive));
-}
+.text-foreground { color: hsl(var(--foreground)); }
+.text-primary { color: hsl(var(--primary)); }
+.text-secondary { color: hsl(var(--secondary-foreground)); }
+.text-muted-foreground { color: hsl(var(--muted-foreground)); }
+.text-destructive { color: hsl(var(--destructive)); }

-.border-border {
-  border-color: hsl(var(--border));
-}
-.border-primary {
-  border-color: hsl(var(--primary));
-}
-.border-input {
-  border-color: hsl(var(--input));
-}
+.border-border { border-color: hsl(var(--border)); }
+.border-primary { border-color: hsl(var(--primary)); }
+.border-input { border-color: hsl(var(--input)); }

 /* ============================================
 * Utility Classes
@@ -22,10 +22,10 @@ GET /resources

 **Query Parameters:**

-| Parameter | Type    | Required | Description                  |
-| --------- | ------- | -------- | ---------------------------- |
-| page      | integer | No       | Page number (default: 1)     |
-| limit     | integer | No       | Items per page (default: 20) |
+| Parameter | Type | Required | Description |
+|-----------|------|----------|-------------|
+| page | integer | No | Page number (default: 1) |
+| limit | integer | No | Items per page (default: 20) |

 **Response:**

@@ -82,9 +82,9 @@ DELETE /resources/:id

 ## Error Codes

-| Code | Description           |
-| ---- | --------------------- |
-| 400  | Bad Request           |
-| 401  | Unauthorized          |
-| 404  | Not Found             |
-| 500  | Internal Server Error |
+| Code | Description |
+|------|-------------|
+| 400 | Bad Request |
+| 401 | Unauthorized |
+| 404 | Not Found |
+| 500 | Internal Server Error |
@@ -1,6 +1,6 @@
 ---
 title: Blog Post Title
-date: { { DATE } }
+date: {{DATE}}
 author: Your Name
 tags: []
 ---
@@ -3,23 +3,18 @@
 ## [Unreleased]

 ### Added
-
 - New feature

 ### Changed
-
 - Updated feature

 ### Fixed
-
 - Bug fix

 ### Removed
-
 - Removed feature

 ## [1.0.0] - {{DATE}}

 ### Added
-
 - Initial release
@@ -9,54 +9,50 @@ Brief description of what is being compared and why.

 ## Feature Comparison

-| Feature   | Option A | Option B |
-| --------- | -------- | -------- |
-| Feature 1 | Yes      | Yes      |
-| Feature 2 | Yes      | No       |
-| Feature 3 | No       | Yes      |
-| Feature 4 | Partial  | Yes      |
+| Feature | Option A | Option B |
+|---------|----------|----------|
+| Feature 1 | Yes | Yes |
+| Feature 2 | Yes | No |
+| Feature 3 | No | Yes |
+| Feature 4 | Partial | Yes |

 ## Pricing

-| Plan       | Option A | Option B |
-| ---------- | -------- | -------- |
-| Free       | Limited  | Limited  |
-| Pro        | $10/mo   | $15/mo   |
-| Enterprise | Custom   | Custom   |
+| Plan | Option A | Option B |
+|------|----------|----------|
+| Free | Limited | Limited |
+| Pro | $10/mo | $15/mo |
+| Enterprise | Custom | Custom |

 ## Pros and Cons

 ### Option A

 **Pros:**
-
 - Pro 1
 - Pro 2

 **Cons:**
-
 - Con 1
 - Con 2

 ### Option B

 **Pros:**
-
 - Pro 1
 - Pro 2

 **Cons:**
-
 - Con 1
 - Con 2

 ## Performance

-| Metric      | Option A | Option B  |
-| ----------- | -------- | --------- |
-| Speed       | Fast     | Moderate  |
-| Memory      | Low      | Medium    |
-| Scalability | Good     | Excellent |
+| Metric | Option A | Option B |
+|--------|----------|----------|
+| Speed | Fast | Moderate |
+| Memory | Low | Medium |
+| Scalability | Good | Excellent |

 ## Recommendation

@@ -2,7 +2,6 @@

 **Date:** {{DATE}}
 **Attendees:**
-
 - Name 1
 - Name 2

@@ -12,48 +12,43 @@
 ## Scope

 ### In Scope
-
 - Item 1
 - Item 2

 ### Out of Scope
-
 - Item 1

 ## Milestones

-| Milestone | Target Date | Status      |
-| --------- | ----------- | ----------- |
-| Kickoff   | {{DATE}}    | Not Started |
-| MVP       | TBD         | Not Started |
-| Launch    | TBD         | Not Started |
+| Milestone | Target Date | Status |
+|-----------|-------------|--------|
+| Kickoff | {{DATE}} | Not Started |
+| MVP | TBD | Not Started |
+| Launch | TBD | Not Started |

 ## Resources

-| Role      | Person | Allocation |
-| --------- | ------ | ---------- |
-| Lead      | Name   | 100%       |
-| Developer | Name   | 50%        |
+| Role | Person | Allocation |
+|------|--------|------------|
+| Lead | Name | 100% |
+| Developer | Name | 50% |

 ## Risks

-| Risk   | Impact | Likelihood | Mitigation |
-| ------ | ------ | ---------- | ---------- |
-| Risk 1 | High   | Medium     | Plan       |
+| Risk | Impact | Likelihood | Mitigation |
+|------|--------|------------|------------|
+| Risk 1 | High | Medium | Plan |

 ## Timeline

 ### Phase 1: Planning
-
 - [ ] Define requirements
 - [ ] Create design documents

 ### Phase 2: Development
-
 - [ ] Implement core features
 - [ ] Write tests

 ### Phase 3: Launch
-
 - [ ] Deploy to production
 - [ ] Monitor and iterate
@@ -21,9 +21,9 @@ const project = require('project-name');

 ## Configuration

-| Option  | Default | Description |
-| ------- | ------- | ----------- |
-| option1 | true    | Description |
+| Option | Default | Description |
+|--------|---------|-------------|
+| option1 | true | Description |

 ## Contributing

@@ -12,12 +12,10 @@ Brief description of what this feature does.
 ## Requirements

 ### Functional Requirements
-
 1. Requirement 1
 2. Requirement 2

 ### Non-Functional Requirements
-
 1. Performance requirement
 2. Security requirement

@@ -29,9 +27,9 @@ Describe the technical approach.

 ### Endpoints

-| Method | Path          | Description  |
-| ------ | ------------- | ------------ |
-| GET    | /api/resource | Get resource |
+| Method | Path | Description |
+|--------|------|-------------|
+| GET | /api/resource | Get resource |

 ## Testing Strategy

@@ -39,6 +37,6 @@ Describe how this will be tested.

 ## Timeline

-| Phase   | Duration | Deliverables        |
-| ------- | -------- | ------------------- |
-| Phase 1 | 1 week   | Core implementation |
+| Phase | Duration | Deliverables |
+|-------|----------|-------------|
+| Phase 1 | 1 week | Core implementation |
@@ -42,7 +42,7 @@ Walk through the implementation.
 ```javascript
 // Example code
 function example() {
-  return 'Hello';
+    return 'Hello';
 }
 ```

@@ -53,12 +53,10 @@ How to verify everything works.
 ## Common Issues

 ### Issue 1
-
 **Problem:** Description of the problem.
 **Solution:** How to fix it.

 ### Issue 2
-
 **Problem:** Description of the problem.
 **Solution:** How to fix it.

@@ -1,246 +1,245 @@
 /**
 * ModalManager - Unified modal system with accessibility support
- * @version 4.4.4
+ * @version 4.4.2
 */
 class ModalManager {
-  #modal;
-  #backdrop;
-  #options;
-  #lastFocusedElement;
-  #focusableElements;
-  #eventListeners;
-  #isOpen;
+    #modal;
+    #backdrop;
+    #options;
+    #lastFocusedElement;
+    #focusableElements;
+    #eventListeners;
+    #isOpen;

-  static #openModals = [];
+    static #openModals = [];

-  constructor(element, options = {}) {
-    this.#modal = typeof element === 'string' ? document.querySelector(element) : element;
-    this.#options = {
-      closeOnBackdrop: true,
-      closeOnEscape: true,
-      focusFirst: true,
-      onOpen: null,
-      onClose: null,
-      ...options,
-    };
-    this.#isOpen = false;
-    this.#eventListeners = [];
-    this.#init();
-  }
-
-  #init() {
-    // Ensure modal has required attributes
-    if (!this.#modal.hasAttribute('role')) {
-      this.#modal.setAttribute('role', 'dialog');
-    }
-    if (!this.#modal.hasAttribute('aria-modal')) {
-      this.#modal.setAttribute('aria-modal', 'true');
+    constructor(element, options = {}) {
+        this.#modal = typeof element === 'string' ? document.querySelector(element) : element;
+        this.#options = {
+            closeOnBackdrop: true,
+            closeOnEscape: true,
+            focusFirst: true,
+            onOpen: null,
+            onClose: null,
+            ...options
+        };
+        this.#isOpen = false;
+        this.#eventListeners = [];
+        this.#init();
    }

-    // Find or create backdrop
-    this.#backdrop = this.#modal.querySelector('.modal-backdrop');
-
-    // Setup close triggers
-    this.#setupCloseTriggers();
-  }
-
-  #setupCloseTriggers() {
-    // Close button
-    const closeBtn = this.#modal.querySelector('.modal-close');
-    if (closeBtn) {
-      const handler = (e) => {
-        e.preventDefault();
-        this.close();
-      };
-      closeBtn.addEventListener('click', handler);
-      this.#eventListeners.push({ el: closeBtn, type: 'click', handler });
-    }
-
-    // Elements with data-close attribute
-    const closeTriggers = this.#modal.querySelectorAll('[data-close]');
-    closeTriggers.forEach((el) => {
-      if (el.classList.contains('modal-backdrop') && !this.#options.closeOnBackdrop) {
-        return;
-      }
-      const handler = (e) => {
-        e.preventDefault();
-        this.close();
-      };
-      el.addEventListener('click', handler);
-      this.#eventListeners.push({ el, type: 'click', handler });
-    });
-  }
-
-  #getFocusableElements() {
-    const selector = [
-      'button:not([disabled])',
-      'input:not([disabled])',
-      'select:not([disabled])',
-      'textarea:not([disabled])',
-      'a[href]',
-      '[tabindex]:not([tabindex="-1"])',
-    ].join(', ');
-
-    return Array.from(this.#modal.querySelectorAll(selector)).filter(
-      (el) => el.offsetParent !== null && !el.classList.contains('modal-backdrop')
-    );
-  }
-
-  #trapFocus(e) {
-    if (e.key !== 'Tab') return;
-
-    const focusable = this.#getFocusableElements();
-    if (focusable.length === 0) return;
-
-    const firstEl = focusable[0];
-    const lastEl = focusable[focusable.length - 1];
-
-    if (e.shiftKey) {
-      if (document.activeElement === firstEl) {
-        e.preventDefault();
-        lastEl.focus();
-      }
-    } else {
-      if (document.activeElement === lastEl) {
-        e.preventDefault();
-        firstEl.focus();
-      }
-    }
-  }
-
-  #handleKeydown(e) {
-    if (e.key === 'Escape' && this.#options.closeOnEscape) {
-      e.preventDefault();
-      this.close();
-    }
-    this.#trapFocus(e);
-  }
-
-  open() {
-    if (this.#isOpen) return;
-
-    // Store last focused element
-    this.#lastFocusedElement = document.activeElement;
-
-    // Track open modals
-    ModalManager.#openModals.push(this);
-
-    // Show modal: remove hidden first, force a reflow so the browser
-    // records opacity:0 as the start state, then add 'open' to trigger
-    // the CSS transition. Without the reflow, both class changes are
-    // batched into one style recalculation and the transition is skipped.
-    this.#modal.classList.remove('hidden');
-    void this.#modal.offsetHeight; // Force reflow — do not remove
-    this.#modal.classList.add('open');
-    this.#isOpen = true;
-
-    // Prevent body scroll
-    document.body.style.overflow = 'hidden';
-
-    // Add keyboard listener
-    const keydownHandler = (e) => this.#handleKeydown(e);
-    document.addEventListener('keydown', keydownHandler);
-    this.#eventListeners.push({ el: document, type: 'keydown', handler: keydownHandler });
-
-    // Focus first element
-    if (this.#options.focusFirst) {
-      requestAnimationFrame(() => {
-        const focusable = this.#getFocusableElements();
-        if (focusable.length > 0) {
-          focusable[0].focus();
+    #init() {
+        // Ensure modal has required attributes
+        if (!this.#modal.hasAttribute('role')) {
+            this.#modal.setAttribute('role', 'dialog');
        }
-      });
+        if (!this.#modal.hasAttribute('aria-modal')) {
+            this.#modal.setAttribute('aria-modal', 'true');
+        }
+
+        // Find or create backdrop
+        this.#backdrop = this.#modal.querySelector('.modal-backdrop');
+
+        // Setup close triggers
+        this.#setupCloseTriggers();
    }

-    // Callback
-    if (this.#options.onOpen) {
-      this.#options.onOpen(this);
+    #setupCloseTriggers() {
+        // Close button
+        const closeBtn = this.#modal.querySelector('.modal-close');
+        if (closeBtn) {
+            const handler = (e) => {
+                e.preventDefault();
+                this.close();
+            };
+            closeBtn.addEventListener('click', handler);
+            this.#eventListeners.push({ el: closeBtn, type: 'click', handler });
+        }
+
+        // Elements with data-close attribute
+        const closeTriggers = this.#modal.querySelectorAll('[data-close]');
+        closeTriggers.forEach(el => {
+            if (el.classList.contains('modal-backdrop') && !this.#options.closeOnBackdrop) {
+                return;
+            }
+            const handler = (e) => {
+                e.preventDefault();
+                this.close();
+            };
+            el.addEventListener('click', handler);
+            this.#eventListeners.push({ el, type: 'click', handler });
+        });
    }

-    // Dispatch custom event
-    this.#modal.dispatchEvent(new CustomEvent('modal:open'));
-  }
+    #getFocusableElements() {
+        const selector = [
+            'button:not([disabled])',
+            'input:not([disabled])',
+            'select:not([disabled])',
+            'textarea:not([disabled])',
+            'a[href]',
+            '[tabindex]:not([tabindex="-1"])'
+        ].join(', ');

-  close() {
-    if (!this.#isOpen) return;
-
-    // Remove from open modals
-    const index = ModalManager.#openModals.indexOf(this);
-    if (index > -1) {
-      ModalManager.#openModals.splice(index, 1);
+        return Array.from(this.#modal.querySelectorAll(selector))
+            .filter(el => el.offsetParent !== null && !el.classList.contains('modal-backdrop'));
    }

-    // Start hide transition
-    this.#modal.classList.remove('open');
-    this.#isOpen = false;
+    #trapFocus(e) {
+        if (e.key !== 'Tab') return;

-    // Re-add 'hidden' after the CSS transition completes so the modal
-    // is fully removed from rendering (display:none), not just invisible.
-    // We use both transitionend and a setTimeout fallback because
-    // transitionend never fires when prefers-reduced-motion disables transitions.
-    let hidden = false;
-    const addHidden = () => {
-      if (hidden || this.#isOpen) return;
-      hidden = true;
-      this.#modal.removeEventListener('transitionend', onTransitionEnd);
-      this.#modal.classList.add('hidden');
-    };
-    const onTransitionEnd = (e) => {
-      if (e.target !== this.#modal) return;
-      addHidden();
-    };
-    this.#modal.addEventListener('transitionend', onTransitionEnd);
-    setTimeout(addHidden, 250); // fallback: slightly longer than 200ms transition
+        const focusable = this.#getFocusableElements();
+        if (focusable.length === 0) return;

-    // Restore body scroll if no modals open
-    if (ModalManager.#openModals.length === 0) {
-      document.body.style.overflow = '';
+        const firstEl = focusable[0];
+        const lastEl = focusable[focusable.length - 1];
+
+        if (e.shiftKey) {
+            if (document.activeElement === firstEl) {
+                e.preventDefault();
+                lastEl.focus();
+            }
+        } else {
+            if (document.activeElement === lastEl) {
+                e.preventDefault();
+                firstEl.focus();
+            }
+        }
    }

-    // Remove keyboard listener
-    const keydownListener = this.#eventListeners.find(
-      (l) => l.el === document && l.type === 'keydown'
-    );
-    if (keydownListener) {
-      document.removeEventListener('keydown', keydownListener.handler);
-      this.#eventListeners = this.#eventListeners.filter((l) => l !== keydownListener);
+    #handleKeydown(e) {
+        if (e.key === 'Escape' && this.#options.closeOnEscape) {
+            e.preventDefault();
+            this.close();
+        }
+        this.#trapFocus(e);
    }

-    // Restore focus
-    if (this.#lastFocusedElement && typeof this.#lastFocusedElement.focus === 'function') {
-      this.#lastFocusedElement.focus();
+    open() {
+        if (this.#isOpen) return;
+
+        // Store last focused element
+        this.#lastFocusedElement = document.activeElement;
+
+        // Track open modals
+        ModalManager.#openModals.push(this);
+
+        // Show modal: remove hidden first, force a reflow so the browser
+        // records opacity:0 as the start state, then add 'open' to trigger
+        // the CSS transition. Without the reflow, both class changes are
+        // batched into one style recalculation and the transition is skipped.
+        this.#modal.classList.remove('hidden');
+        void this.#modal.offsetHeight; // Force reflow — do not remove
+        this.#modal.classList.add('open');
+        this.#isOpen = true;
+
+        // Prevent body scroll
+        document.body.style.overflow = 'hidden';
+
+        // Add keyboard listener
+        const keydownHandler = (e) => this.#handleKeydown(e);
+        document.addEventListener('keydown', keydownHandler);
+        this.#eventListeners.push({ el: document, type: 'keydown', handler: keydownHandler });
+
+        // Focus first element
+        if (this.#options.focusFirst) {
+            requestAnimationFrame(() => {
+                const focusable = this.#getFocusableElements();
+                if (focusable.length > 0) {
+                    focusable[0].focus();
+                }
+            });
+        }
+
+        // Callback
+        if (this.#options.onOpen) {
+            this.#options.onOpen(this);
+        }
+
+        // Dispatch custom event
+        this.#modal.dispatchEvent(new CustomEvent('modal:open'));
    }

-    // Callback
-    if (this.#options.onClose) {
-      this.#options.onClose(this);
+    close() {
+        if (!this.#isOpen) return;
+
+        // Remove from open modals
+        const index = ModalManager.#openModals.indexOf(this);
+        if (index > -1) {
+            ModalManager.#openModals.splice(index, 1);
+        }
+
+        // Start hide transition
+        this.#modal.classList.remove('open');
+        this.#isOpen = false;
+
+        // Re-add 'hidden' after the CSS transition completes so the modal
+        // is fully removed from rendering (display:none), not just invisible.
+        // We use both transitionend and a setTimeout fallback because
+        // transitionend never fires when prefers-reduced-motion disables transitions.
+        let hidden = false;
+        const addHidden = () => {
+            if (hidden || this.#isOpen) return;
+            hidden = true;
+            this.#modal.removeEventListener('transitionend', onTransitionEnd);
+            this.#modal.classList.add('hidden');
+        };
+        const onTransitionEnd = (e) => {
+            if (e.target !== this.#modal) return;
+            addHidden();
+        };
+        this.#modal.addEventListener('transitionend', onTransitionEnd);
+        setTimeout(addHidden, 250); // fallback: slightly longer than 200ms transition
+
+        // Restore body scroll if no modals open
+        if (ModalManager.#openModals.length === 0) {
+            document.body.style.overflow = '';
+        }
+
+        // Remove keyboard listener
+        const keydownListener = this.#eventListeners.find(
+            l => l.el === document && l.type === 'keydown'
+        );
+        if (keydownListener) {
+            document.removeEventListener('keydown', keydownListener.handler);
+            this.#eventListeners = this.#eventListeners.filter(l => l !== keydownListener);
+        }
+
+        // Restore focus
+        if (this.#lastFocusedElement && typeof this.#lastFocusedElement.focus === 'function') {
+            this.#lastFocusedElement.focus();
+        }
+
+        // Callback
+        if (this.#options.onClose) {
+            this.#options.onClose(this);
+        }
+
+        // Dispatch custom event
+        this.#modal.dispatchEvent(new CustomEvent('modal:close'));
    }

-    // Dispatch custom event
-    this.#modal.dispatchEvent(new CustomEvent('modal:close'));
-  }
-
-  isOpen() {
-    return this.#isOpen;
-  }
-
-  destroy() {
-    // Close if open
-    if (this.#isOpen) {
-      this.close();
+    isOpen() {
+        return this.#isOpen;
    }

-    // Remove all event listeners
-    this.#eventListeners.forEach(({ el, type, handler }) => {
-      el.removeEventListener(type, handler);
-    });
-    this.#eventListeners = [];
-  }
+    destroy() {
+        // Close if open
+        if (this.#isOpen) {
+            this.close();
+        }
+
+        // Remove all event listeners
+        this.#eventListeners.forEach(({ el, type, handler }) => {
+            el.removeEventListener(type, handler);
+        });
+        this.#eventListeners = [];
+    }
 }

 // Export for use in renderer - avoid duplicate declaration
 if (typeof window !== 'undefined' && !window.ModalManager) {
-  window.ModalManager = ModalManager;
+    window.ModalManager = ModalManager;
 }

 // CommonJS export
@@ -1,14 +1,12 @@
 function createWelcomeContent(recentFiles = [], appVersion = '') {
-  const recentHtml = recentFiles.length
-    ? recentFiles
-        .map((f) => {
-          const name = f.split(/[/\\]/).pop();
-          return `<div class="welcome-recent-item" data-path="${f}"><span class="welcome-recent-name">${name}</span><span class="welcome-recent-path">${f}</span></div>`;
-        })
-        .join('')
-    : '<p class="welcome-muted">No recent files</p>';
+    const recentHtml = recentFiles.length
+        ? recentFiles.map(f => {
+            const name = f.split(/[/\\]/).pop();
+            return `<div class="welcome-recent-item" data-path="${f}"><span class="welcome-recent-name">${name}</span><span class="welcome-recent-path">${f}</span></div>`;
+        }).join('')
+        : '<p class="welcome-muted">No recent files</p>';

-  return `
+    return `
    <div class="welcome-container">
        <div class="welcome-hero">
            <h1 class="welcome-title">MarkdownConverter</h1>
@@ -4,154 +4,172 @@
 * Toggle with F11, exit with Escape.
 */

-const { EditorView, ViewPlugin, Decoration } = require('@codemirror/view');
+const {
+    EditorView,
+    ViewPlugin,
+    Decoration,
+    DecorationSet,
+} = require('@codemirror/view');
 const { RangeSetBuilder } = require('@codemirror/state');

 class ZenMode {
-  /**
-   * @param {import('./renderer').TabManager} tabManager
-   */
-  constructor(tabManager) {
-    this.tabManager = tabManager;
-    this.active = false;
-    this._hud = null;
-    this._timerInterval = null;
-    this._sessionStart = null;
-    this._extensions = [];
-  }
-
-  activate() {
-    if (this.active) return;
-    this.active = true;
-
-    document.body.classList.add('zen-mode');
-
-    // Collapse sidebar
-    const sidebar = document.getElementById('sidebar');
-    if (sidebar) sidebar.classList.add('collapsed');
-
-    // Hide preview pane for the active tab
-    const tab = this.tabManager.tabs.get(this.tabManager.activeTabId);
-    if (tab) {
-      const previewContainer = document.getElementById(`preview-pane-${tab.id}`);
-      if (previewContainer) previewContainer.classList.add('hidden');
-      const editorPane = document.getElementById(`editor-pane-${tab.id}`);
-      if (editorPane) editorPane.classList.add('full-width');
-
-      // Add CM6 extensions to the active editor
-      if (tab.editorView) {
-        this._extensions = [typewriterScrollExtension, lineDimmingExtension];
-        // Reconfigure is not straightforward with CM6's immutable state.
-        // Instead we dispatch effects or simply rebuild with new extensions.
-        // Since we cannot hot-swap extensions on an existing EditorView,
-        // we store a reference and the CSS + updateListener handle the rest.
-        // The typewriter + dimming plugins are applied via a compartment approach
-        // would be ideal, but for simplicity we use DOM + updateListener.
-        this._applyTypewriterBehavior(tab.editorView);
-      }
+    /**
+     * @param {import('./renderer').TabManager} tabManager
+     */
+    constructor(tabManager) {
+        this.tabManager = tabManager;
+        this.active = false;
+        this._hud = null;
+        this._timerInterval = null;
+        this._sessionStart = null;
+        this._extensions = [];
    }

-    // Create HUD
-    this._createHUD();
+    activate() {
+        if (this.active) return;
+        this.active = true;

-    // Start session timer
-    this._sessionStart = Date.now();
-    this._timerInterval = setInterval(() => this._updateHUD(), 1000);
+        document.body.classList.add('zen-mode');

-    // Focus editor
-    if (tab?.editorView) tab.editorView.focus();
-  }
+        // Collapse sidebar
+        const sidebar = document.getElementById('sidebar');
+        if (sidebar) sidebar.classList.add('collapsed');

-  deactivate() {
-    if (!this.active) return;
-    this.active = false;
+        // Hide preview pane for the active tab
+        const tab = this.tabManager.tabs.get(this.tabManager.activeTabId);
+        if (tab) {
+            const previewContainer = document.getElementById(`preview-pane-${tab.id}`);
+            if (previewContainer) previewContainer.classList.add('hidden');
+            const editorPane = document.getElementById(`editor-pane-${tab.id}`);
+            if (editorPane) editorPane.classList.add('full-width');

-    document.body.classList.remove('zen-mode');
-
-    // Restore preview pane for the active tab
-    const tab = this.tabManager.tabs.get(this.tabManager.activeTabId);
-    if (tab) {
-      const previewContainer = document.getElementById(`preview-pane-${tab.id}`);
-      if (previewContainer) previewContainer.classList.remove('hidden');
-      const editorPane = document.getElementById(`editor-pane-${tab.id}`);
-      if (editorPane) editorPane.classList.remove('full-width');
-
-      // Remove typewriter listener
-      if (tab.editorView && this._selectionListener) {
-        window.removeEventListener('zen-typewriter', this._selectionListener);
-        this._selectionListener = null;
-      }
-    }
-
-    // Remove HUD
-    if (this._hud && this._hud.parentNode) {
-      this._hud.parentNode.removeChild(this._hud);
-      this._hud = null;
-    }
-
-    // Stop timer
-    if (this._timerInterval) {
-      clearInterval(this._timerInterval);
-      this._timerInterval = null;
-    }
-    this._sessionStart = null;
-    this._extensions = [];
-  }
-
-  toggle() {
-    if (this.active) {
-      this.deactivate();
-    } else {
-      this.activate();
-    }
-  }
-
-  _applyTypewriterBehavior(view) {
-    // We use a custom update listener that scrolls the cursor to center.
-    const scrollFn = () => {
-      if (!this.active) return;
-      const pos = view.state.selection.main.head;
-      requestAnimationFrame(() => {
-        view.dispatch({
-          effects: EditorView.scrollIntoView(pos, { y: 'center' }),
-        });
-      });
-    };
-
-    // Use interval to keep cursor centered during typing
-    this._scrollInterval = setInterval(() => {
-      if (!this.active) {
-        clearInterval(this._scrollInterval);
-        this._scrollInterval = null;
-        return;
-      }
-      // Typewriter scroll: center the cursor line
-      try {
-        const pos = view.state.selection.main.head;
-        const coords = view.coordsAtPos(pos);
-        const scroller = view.scrollDOM;
-        if (coords && scroller) {
-          const scrollerRect = scroller.getBoundingClientRect();
-          const cursorCenter = coords.top + (coords.bottom - coords.top) / 2;
-          const viewCenter = scrollerRect.top + scrollerRect.height / 2;
-          const diff = cursorCenter - viewCenter;
-          if (Math.abs(diff) > 30) {
-            scroller.scrollTop += diff;
-          }
+            // Add CM6 extensions to the active editor
+            if (tab.editorView) {
+                this._extensions = [
+                    typewriterScrollExtension,
+                    lineDimmingExtension,
+                ];
+                // Reconfigure is not straightforward with CM6's immutable state.
+                // Instead we dispatch effects or simply rebuild with new extensions.
+                // Since we cannot hot-swap extensions on an existing EditorView,
+                // we store a reference and the CSS + updateListener handle the rest.
+                // The typewriter + dimming plugins are applied via a compartment approach
+                // would be ideal, but for simplicity we use DOM + updateListener.
+                this._applyTypewriterBehavior(tab.editorView);
+            }
        }
-      } catch {
-        // Ignore errors from destroyed views
-      }
-    }, 200);

-    // Initial scroll to center
-    scrollFn();
-  }
+        // Create HUD
+        this._createHUD();

-  _createHUD() {
-    const hud = document.createElement('div');
-    hud.className = 'zen-hud';
-    hud.innerHTML = `
+        // Start session timer
+        this._sessionStart = Date.now();
+        this._timerInterval = setInterval(() => this._updateHUD(), 1000);
+
+        // Focus editor
+        if (tab?.editorView) tab.editorView.focus();
+    }
+
+    deactivate() {
+        if (!this.active) return;
+        this.active = false;
+
+        document.body.classList.remove('zen-mode');
+
+        // Restore preview pane for the active tab
+        const tab = this.tabManager.tabs.get(this.tabManager.activeTabId);
+        if (tab) {
+            const previewContainer = document.getElementById(`preview-pane-${tab.id}`);
+            if (previewContainer) previewContainer.classList.remove('hidden');
+            const editorPane = document.getElementById(`editor-pane-${tab.id}`);
+            if (editorPane) editorPane.classList.remove('full-width');
+
+            // Remove typewriter listener
+            if (tab.editorView && this._selectionListener) {
+                window.removeEventListener('zen-typewriter', this._selectionListener);
+                this._selectionListener = null;
+            }
+        }
+
+        // Remove HUD
+        if (this._hud && this._hud.parentNode) {
+            this._hud.parentNode.removeChild(this._hud);
+            this._hud = null;
+        }
+
+        // Stop timer
+        if (this._timerInterval) {
+            clearInterval(this._timerInterval);
+            this._timerInterval = null;
+        }
+        this._sessionStart = null;
+        this._extensions = [];
+    }
+
+    toggle() {
+        if (this.active) {
+            this.deactivate();
+        } else {
+            this.activate();
+        }
+    }
+
+    _applyTypewriterBehavior(view) {
+        // We use a custom update listener that scrolls the cursor to center.
+        // This is stored on the instance so we can clean it up.
+        const scrollTimeout = null;
+
+        const scrollFn = () => {
+            if (!this.active) return;
+            const pos = view.state.selection.main.head;
+            requestAnimationFrame(() => {
+                view.dispatch({
+                    effects: EditorView.scrollIntoView(pos, { y: 'center' }),
+                });
+            });
+        };
+
+        // Listen for selection/doc changes via a polling approach
+        // since we cannot add extensions to an existing view.
+        // Instead, use the DOM scrollIntoView after selection changes.
+        const observer = new MutationObserver(() => {
+            // No-op, we use interval below
+        });
+
+        // Use interval to keep cursor centered during typing
+        this._scrollInterval = setInterval(() => {
+            if (!this.active) {
+                clearInterval(this._scrollInterval);
+                this._scrollInterval = null;
+                return;
+            }
+            // Typewriter scroll: center the cursor line
+            try {
+                const pos = view.state.selection.main.head;
+                const coords = view.coordsAtPos(pos);
+                const scroller = view.scrollDOM;
+                if (coords && scroller) {
+                    const scrollerRect = scroller.getBoundingClientRect();
+                    const cursorCenter = coords.top + (coords.bottom - coords.top) / 2;
+                    const viewCenter = scrollerRect.top + scrollerRect.height / 2;
+                    const diff = cursorCenter - viewCenter;
+                    if (Math.abs(diff) > 30) {
+                        scroller.scrollTop += diff;
+                    }
+                }
+            } catch (e) {
+                // Ignore errors from destroyed views
+            }
+        }, 200);
+
+        // Initial scroll to center
+        scrollFn();
+    }
+
+    _createHUD() {
+        const hud = document.createElement('div');
+        hud.className = 'zen-hud';
+        hud.innerHTML = `
            <span class="zen-hud-item" id="zen-words">0 words</span>
            <span class="zen-hud-sep">&middot;</span>
            <span class="zen-hud-item" id="zen-reading-time">0 min read</span>
@@ -161,124 +179,114 @@ class ZenMode {
                <div class="zen-progress-bar" id="zen-progress-bar"></div>
            </div>
        `;
-    document.body.appendChild(hud);
-    this._hud = hud;
-    this._updateHUD();
-  }
-
-  _updateHUD() {
-    if (!this.active || !this._hud) return;
-
-    const content = this.tabManager.getEditorContent();
-    const words = content.trim()
-      ? content
-          .trim()
-          .split(/\s+/)
-          .filter((w) => w.length > 0).length
-      : 0;
-    const readingTime = Math.max(1, Math.ceil(words / 200));
-
-    const wordsEl = document.getElementById('zen-words');
-    const readingEl = document.getElementById('zen-reading-time');
-    const timerEl = document.getElementById('zen-timer');
-
-    if (wordsEl) wordsEl.textContent = `${words.toLocaleString()} words`;
-    if (readingEl) readingEl.textContent = `${readingTime} min read`;
-
-    // Session timer
-    if (this._sessionStart) {
-      const elapsed = Math.floor((Date.now() - this._sessionStart) / 1000);
-      const minutes = String(Math.floor(elapsed / 60)).padStart(2, '0');
-      const seconds = String(elapsed % 60).padStart(2, '0');
-      if (timerEl) timerEl.textContent = `${minutes}:${seconds}`;
+        document.body.appendChild(hud);
+        this._hud = hud;
+        this._updateHUD();
    }

-    // Word goal progress
-    const goalStr = localStorage.getItem('zen-word-goal');
-    const progressBar = document.getElementById('zen-progress-bar');
-    const progressContainer = document.getElementById('zen-progress-container');
-    if (progressBar && progressContainer) {
-      if (goalStr) {
-        const goal = parseInt(goalStr, 10);
-        if (goal > 0) {
-          const pct = Math.min(100, Math.round((words / goal) * 100));
-          progressBar.style.width = `${pct}%`;
-          progressContainer.style.display = 'block';
-        } else {
-          progressContainer.style.display = 'none';
+    _updateHUD() {
+        if (!this.active || !this._hud) return;
+
+        const content = this.tabManager.getEditorContent();
+        const words = content.trim() ? content.trim().split(/\s+/).filter(w => w.length > 0).length : 0;
+        const readingTime = Math.max(1, Math.ceil(words / 200));
+
+        const wordsEl = document.getElementById('zen-words');
+        const readingEl = document.getElementById('zen-reading-time');
+        const timerEl = document.getElementById('zen-timer');
+
+        if (wordsEl) wordsEl.textContent = `${words.toLocaleString()} words`;
+        if (readingEl) readingEl.textContent = `${readingTime} min read`;
+
+        // Session timer
+        if (this._sessionStart) {
+            const elapsed = Math.floor((Date.now() - this._sessionStart) / 1000);
+            const minutes = String(Math.floor(elapsed / 60)).padStart(2, '0');
+            const seconds = String(elapsed % 60).padStart(2, '0');
+            if (timerEl) timerEl.textContent = `${minutes}:${seconds}`;
+        }
+
+        // Word goal progress
+        const goalStr = localStorage.getItem('zen-word-goal');
+        const progressBar = document.getElementById('zen-progress-bar');
+        const progressContainer = document.getElementById('zen-progress-container');
+        if (progressBar && progressContainer) {
+            if (goalStr) {
+                const goal = parseInt(goalStr, 10);
+                if (goal > 0) {
+                    const pct = Math.min(100, Math.round((words / goal) * 100));
+                    progressBar.style.width = `${pct}%`;
+                    progressContainer.style.display = 'block';
+                } else {
+                    progressContainer.style.display = 'none';
+                }
+            } else {
+                progressContainer.style.display = 'none';
+            }
        }
-      } else {
-        progressContainer.style.display = 'none';
-      }
    }
-  }
 }

 // Typewriter scroll ViewPlugin
-const typewriterScrollExtension = ViewPlugin.fromClass(
-  class {
+const typewriterScrollExtension = ViewPlugin.fromClass(class {
    constructor(view) {
-      this.view = view;
+        this.view = view;
    }

    update(update) {
-      if (update.selectionSet || update.docChanged) {
-        const pos = update.state.selection.main.head;
-        requestAnimationFrame(() => {
-          if (this.view.dom && this.view.dom.isConnected) {
-            this.view.dispatch({
-              effects: EditorView.scrollIntoView(pos, { y: 'center' }),
+        if (update.selectionSet || update.docChanged) {
+            const pos = update.state.selection.main.head;
+            requestAnimationFrame(() => {
+                if (this.view.dom && this.view.dom.isConnected) {
+                    this.view.dispatch({
+                        effects: EditorView.scrollIntoView(pos, { y: 'center' }),
+                    });
+                }
            });
-          }
-        });
-      }
+        }
    }
-  }
-);
+});

 // Line dimming ViewPlugin
 function getOpacity(distance) {
-  if (distance === 0) return 1.0;
-  if (distance === 1) return 0.7;
-  if (distance === 2) return 0.6;
-  if (distance === 3) return 0.45;
-  return 0.3;
+    if (distance === 0) return 1.0;
+    if (distance === 1) return 0.7;
+    if (distance === 2) return 0.6;
+    if (distance === 3) return 0.45;
+    return 0.3;
 }

-const lineDimmingExtension = ViewPlugin.fromClass(
-  class {
+const lineDimmingExtension = ViewPlugin.fromClass(class {
    constructor(view) {
-      this.decorations = this.buildDecorations(view);
+        this.decorations = this.buildDecorations(view);
    }

    update(update) {
-      if (update.docChanged || update.selectionSet || update.viewportChanged) {
-        this.decorations = this.buildDecorations(update.view);
-      }
+        if (update.docChanged || update.selectionSet || update.viewportChanged) {
+            this.decorations = this.buildDecorations(update.view);
+        }
    }

    buildDecorations(view) {
-      const builder = new RangeSetBuilder();
-      const pos = view.state.selection.main.head;
-      const activeLine = view.state.doc.lineAt(pos).number;
-      const doc = view.state.doc;
+        const builder = new RangeSetBuilder();
+        const pos = view.state.selection.main.head;
+        const activeLine = view.state.doc.lineAt(pos).number;
+        const doc = view.state.doc;

-      for (let lineNum = 1; lineNum <= doc.lines; lineNum++) {
-        const line = doc.line(lineNum);
-        const distance = Math.abs(lineNum - activeLine);
-        const opacity = getOpacity(distance);
-        const deco = Decoration.line({
-          attributes: { style: `opacity:${opacity};transition:opacity 0.15s ease` },
-        });
-        builder.add(line.from, line.from, deco);
-      }
+        for (let lineNum = 1; lineNum <= doc.lines; lineNum++) {
+            const line = doc.line(lineNum);
+            const distance = Math.abs(lineNum - activeLine);
+            const opacity = getOpacity(distance);
+            const deco = Decoration.line({
+                attributes: { style: `opacity:${opacity};transition:opacity 0.15s ease` },
+            });
+            builder.add(line.from, line.from, deco);
+        }

-      return builder.finish();
+        return builder.finish();
    }
-  },
-  {
-    decorations: (v) => v.decorations,
-  }
-);
+}, {
+    decorations: v => v.decorations,
+});

 module.exports = { ZenMode };
@@ -0,0 +1,87 @@
+const animate = require('tailwindcss-animate')
+
+/** @type {import('tailwindcss').Config} */
+module.exports = {
+  darkMode: ['class'],
+  content: [
+    './src/renderer/**/*.{js,ts,jsx,tsx}',
+    './src/renderer/index.html',
+  ],
+  theme: {
+    container: {
+      center: true,
+      padding: '2rem',
+      screens: { '2xl': '1400px' },
+    },
+    extend: {
+      colors: {
+        border: 'hsl(var(--border))',
+        input: 'hsl(var(--input))',
+        ring: 'hsl(var(--ring))',
+        background: 'hsl(var(--background))',
+        foreground: 'hsl(var(--foreground))',
+        primary: {
+          DEFAULT: 'hsl(var(--primary))',
+          foreground: 'hsl(var(--primary-foreground))',
+        },
+        secondary: {
+          DEFAULT: 'hsl(var(--secondary))',
+          foreground: 'hsl(var(--secondary-foreground))',
+        },
+        destructive: {
+          DEFAULT: 'hsl(var(--destructive))',
+          foreground: 'hsl(var(--destructive-foreground))',
+        },
+        muted: {
+          DEFAULT: 'hsl(var(--muted))',
+          foreground: 'hsl(var(--muted-foreground))',
+        },
+        accent: {
+          DEFAULT: 'hsl(var(--accent))',
+          foreground: 'hsl(var(--accent-foreground))',
+        },
+        popover: {
+          DEFAULT: 'hsl(var(--popover))',
+          foreground: 'hsl(var(--popover-foreground))',
+        },
+        card: {
+          DEFAULT: 'hsl(var(--card))',
+          foreground: 'hsl(var(--card-foreground))',
+        },
+        brand: {
+          DEFAULT: '#e5461f',
+          dark: '#c93a18',
+          light: '#ff6b47',
+        },
+        success: '#1a7a56',
+        warning: 'hsl(45 93% 47%)',
+        danger: 'hsl(0 84% 60%)',
+        info: 'hsl(199 89% 48%)',
+        warm: {
+          50: '#fafbfc', 100: '#f5f5f5', 200: '#e3e3e3', 300: '#d1d1d1',
+          400: '#b0b0b0', 500: '#9a9696', 600: '#7a7878', 700: '#5a5858',
+          800: '#4e4e4e', 900: '#464646', 950: '#0d0b09',
+        },
+      },
+      borderRadius: {
+        lg: 'var(--radius)',
+        md: 'calc(var(--radius) - 2px)',
+        sm: 'calc(var(--radius) - 4px)',
+      },
+      fontFamily: {
+        sans: ['"Plus Jakarta Sans"', 'system-ui', 'sans-serif'],
+        display: ['"Barlow Condensed"', 'system-ui', 'sans-serif'],
+        mono: ['"JetBrains Mono"', '"Fira Code"', '"SF Mono"', 'Consolas', 'monospace'],
+      },
+      keyframes: {
+        'accordion-down': { from: { height: '0' }, to: { height: 'var(--radix-accordion-content-height)' } },
+        'accordion-up': { from: { height: 'var(--radix-accordion-content-height)' }, to: { height: '0' } },
+      },
+      animation: {
+        'accordion-down': 'accordion-down 0.2s ease-out',
+        'accordion-up': 'accordion-up 0.2s ease-out',
+      },
+    },
+  },
+  plugins: [animate],
+}
@@ -1,28 +0,0 @@
-/**
- * Tests for bundled external tools
- */
-
-const fs = require('fs');
-const path = require('path');
-
-describe('Bundled Pandoc binary', () => {
-  const rootDir = path.resolve(__dirname, '..');
-  const platform = process.platform;
-  const binaryPath = path.join(rootDir, 'bin', platform, 'pandoc');
-  const windowsBinaryPath = path.join(rootDir, 'bin', platform, 'pandoc.exe');
-
-  test('Pandoc binary exists for current platform', () => {
-    const exists = fs.existsSync(binaryPath) || fs.existsSync(windowsBinaryPath);
-    expect(exists).toBe(true);
-  });
-
-  test('Pandoc binary is executable', () => {
-    if (platform === 'win32') {
-      expect(fs.existsSync(windowsBinaryPath)).toBe(true);
-    } else {
-      expect(fs.existsSync(binaryPath)).toBe(true);
-      const stats = fs.statSync(binaryPath);
-      expect(stats.mode & 0o111).toBeGreaterThan(0);
-    }
-  });
-});
@@ -8,10 +8,10 @@
 */

 describe('CommandPalette', () => {
-  let CommandPalette;
+    let CommandPalette;

-  beforeEach(() => {
-    document.body.innerHTML = `
+    beforeEach(() => {
+        document.body.innerHTML = `
            <div class="command-palette-overlay hidden" id="command-palette-overlay">
                <div class="command-palette">
                    <input type="text" id="command-palette-input">
@@ -19,126 +19,126 @@ describe('CommandPalette', () => {
                </div>
            </div>
        `;
-    CommandPalette = require('../src/command-palette').CommandPalette;
-  });
+        CommandPalette = require('../src/command-palette').CommandPalette;
+    });

-  test('starts hidden', () => {
-    const palette = new CommandPalette();
-    expect(palette.isOpen()).toBe(false);
-  });
+    test('starts hidden', () => {
+        const palette = new CommandPalette();
+        expect(palette.isOpen()).toBe(false);
+    });

-  test('opens and focuses input', () => {
-    const palette = new CommandPalette();
-    palette.open();
-    expect(palette.isOpen()).toBe(true);
-  });
+    test('opens and focuses input', () => {
+        const palette = new CommandPalette();
+        palette.open();
+        expect(palette.isOpen()).toBe(true);
+    });

-  test('closes', () => {
-    const palette = new CommandPalette();
-    palette.open();
-    palette.close();
-    expect(palette.isOpen()).toBe(false);
-  });
+    test('closes', () => {
+        const palette = new CommandPalette();
+        palette.open();
+        palette.close();
+        expect(palette.isOpen()).toBe(false);
+    });

-  test('registers and renders commands', () => {
-    const palette = new CommandPalette();
-    palette.register('Test Command', 'Ctrl+T', () => {});
-    palette.register('Another Command', '', () => {});
-    palette.open();
-    const items = document.querySelectorAll('.command-item');
-    expect(items.length).toBe(2);
-  });
+    test('registers and renders commands', () => {
+        const palette = new CommandPalette();
+        palette.register('Test Command', 'Ctrl+T', () => {});
+        palette.register('Another Command', '', () => {});
+        palette.open();
+        const items = document.querySelectorAll('.command-item');
+        expect(items.length).toBe(2);
+    });

-  test('filters commands by search', () => {
-    const palette = new CommandPalette();
-    palette.register('Save File', 'Ctrl+S', () => {});
-    palette.register('Open File', 'Ctrl+O', () => {});
-    palette.register('Bold Text', 'Ctrl+B', () => {});
-    palette.renderResults('file');
-    const items = document.querySelectorAll('.command-item');
-    expect(items.length).toBe(2);
-  });
+    test('filters commands by search', () => {
+        const palette = new CommandPalette();
+        palette.register('Save File', 'Ctrl+S', () => {});
+        palette.register('Open File', 'Ctrl+O', () => {});
+        palette.register('Bold Text', 'Ctrl+B', () => {});
+        palette.renderResults('file');
+        const items = document.querySelectorAll('.command-item');
+        expect(items.length).toBe(2);
+    });

-  test('executes command', () => {
-    const palette = new CommandPalette();
-    const action = jest.fn();
-    palette.register('Test', '', action);
-    palette.open();
-    palette.executeSelected();
-    expect(action).toHaveBeenCalled();
-  });
+    test('executes command', () => {
+        const palette = new CommandPalette();
+        const action = jest.fn();
+        palette.register('Test', '', action);
+        palette.open();
+        palette.executeSelected();
+        expect(action).toHaveBeenCalled();
+    });

-  test('highlights matching text', () => {
-    const palette = new CommandPalette();
-    const result = palette.highlightMatch('Save File', 'save');
-    expect(result).toContain('<strong>');
-    expect(result).toContain('Save');
-  });
+    test('highlights matching text', () => {
+        const palette = new CommandPalette();
+        const result = palette.highlightMatch('Save File', 'save');
+        expect(result).toContain('<strong>');
+        expect(result).toContain('Save');
+    });

-  test('highlightMatch returns original text when no query', () => {
-    const palette = new CommandPalette();
-    const result = palette.highlightMatch('Save File', '');
-    expect(result).toBe('Save File');
-  });
+    test('highlightMatch returns original text when no query', () => {
+        const palette = new CommandPalette();
+        const result = palette.highlightMatch('Save File', '');
+        expect(result).toBe('Save File');
+    });

-  test('filters case-insensitively', () => {
-    const palette = new CommandPalette();
-    palette.register('Save File', '', () => {});
-    palette.register('Open File', '', () => {});
-    palette.renderResults('SAVE');
-    const items = document.querySelectorAll('.command-item');
-    expect(items.length).toBe(1);
-  });
+    test('filters case-insensitively', () => {
+        const palette = new CommandPalette();
+        palette.register('Save File', '', () => {});
+        palette.register('Open File', '', () => {});
+        palette.renderResults('SAVE');
+        const items = document.querySelectorAll('.command-item');
+        expect(items.length).toBe(1);
+    });

-  test('shows all commands when query is empty', () => {
-    const palette = new CommandPalette();
-    palette.register('Cmd1', '', () => {});
-    palette.register('Cmd2', '', () => {});
-    palette.register('Cmd3', '', () => {});
-    palette.renderResults('');
-    const items = document.querySelectorAll('.command-item');
-    expect(items.length).toBe(3);
-  });
+    test('shows all commands when query is empty', () => {
+        const palette = new CommandPalette();
+        palette.register('Cmd1', '', () => {});
+        palette.register('Cmd2', '', () => {});
+        palette.register('Cmd3', '', () => {});
+        palette.renderResults('');
+        const items = document.querySelectorAll('.command-item');
+        expect(items.length).toBe(3);
+    });

-  test('displays shortcut when provided', () => {
-    const palette = new CommandPalette();
-    palette.register('Save File', 'Ctrl+S', () => {});
-    palette.open();
-    const shortcut = document.querySelector('.command-shortcut');
-    expect(shortcut).not.toBeNull();
-    expect(shortcut.textContent).toBe('Ctrl+S');
-  });
+    test('displays shortcut when provided', () => {
+        const palette = new CommandPalette();
+        palette.register('Save File', 'Ctrl+S', () => {});
+        palette.open();
+        const shortcut = document.querySelector('.command-shortcut');
+        expect(shortcut).not.toBeNull();
+        expect(shortcut.textContent).toBe('Ctrl+S');
+    });

-  test('does not display shortcut when empty', () => {
-    const palette = new CommandPalette();
-    palette.register('Test Command', '', () => {});
-    palette.open();
-    const shortcut = document.querySelector('.command-shortcut');
-    expect(shortcut).toBeNull();
-  });
+    test('does not display shortcut when empty', () => {
+        const palette = new CommandPalette();
+        palette.register('Test Command', '', () => {});
+        palette.open();
+        const shortcut = document.querySelector('.command-shortcut');
+        expect(shortcut).toBeNull();
+    });

-  test('closes on overlay click', () => {
-    const palette = new CommandPalette();
-    palette.open();
-    // Simulate click on the overlay itself
-    const event = new Event('click', { bubbles: true });
-    Object.defineProperty(event, 'target', { value: palette.overlay });
-    palette.overlay.dispatchEvent(event);
-    expect(palette.isOpen()).toBe(false);
-  });
+    test('closes on overlay click', () => {
+        const palette = new CommandPalette();
+        palette.open();
+        // Simulate click on the overlay itself
+        const event = new Event('click', { bubbles: true });
+        Object.defineProperty(event, 'target', { value: palette.overlay });
+        palette.overlay.dispatchEvent(event);
+        expect(palette.isOpen()).toBe(false);
+    });

-  test('executeSelected does nothing when no commands', () => {
-    const palette = new CommandPalette();
-    palette.open();
-    // Should not throw
-    expect(() => palette.executeSelected()).not.toThrow();
-  });
+    test('executeSelected does nothing when no commands', () => {
+        const palette = new CommandPalette();
+        palette.open();
+        // Should not throw
+        expect(() => palette.executeSelected()).not.toThrow();
+    });

-  test('closes after executing command', () => {
-    const palette = new CommandPalette();
-    palette.register('Test', '', jest.fn());
-    palette.open();
-    palette.executeSelected();
-    expect(palette.isOpen()).toBe(false);
-  });
+    test('closes after executing command', () => {
+        const palette = new CommandPalette();
+        palette.register('Test', '', jest.fn());
+        palette.open();
+        palette.executeSelected();
+        expect(palette.isOpen()).toBe(false);
+    });
 });
@@ -0,0 +1,38 @@
+import { describe, it, expect, beforeEach, vi } from 'vitest';
+import { render, screen } from '@testing-library/react';
+import { ThemeProvider } from '@/components/theme-provider';
+import { EditorPane } from '@/components/editor/EditorPane';
+import { useEditorStore } from '@/stores/editor-store';
+import { CodeMirrorEditor } from '@/components/editor/CodeMirrorEditor';
+
+vi.mock('@/components/editor/CodeMirrorEditor', () => ({
+  CodeMirrorEditor: ({ initialContent }: { initialContent: string }) => (
+    <div data-testid="codemirror-mock">{initialContent}</div>
+  ),
+}));
+
+describe('EditorPane', () => {
+  beforeEach(() => {
+    useEditorStore.setState({ buffers: new Map(), activeId: null });
+  });
+
+  it('renders the empty state when no buffer is open', () => {
+    render(
+      <ThemeProvider defaultTheme="dark" attribute="class">
+        <EditorPane />
+      </ThemeProvider>
+    );
+    expect(screen.getByText(/no file open/i)).toBeInTheDocument();
+  });
+
+  it('renders the editor when a buffer is open', () => {
+    useEditorStore.getState().openBuffer('b1', '/x.md', '# hello');
+    render(
+      <ThemeProvider defaultTheme="dark" attribute="class">
+        <EditorPane />
+      </ThemeProvider>
+    );
+    expect(screen.getByTestId('codemirror-mock')).toBeInTheDocument();
+    expect(screen.getByTestId('codemirror-mock')).toHaveTextContent('# hello');
+  });
+});
@@ -0,0 +1,33 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+import { render, screen } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import { ThemeProvider } from '@/components/theme-provider';
+import { AppHeader } from '@/components/layout/AppHeader';
+import { useAppStore } from '@/stores/app-store';
+
+describe('AppHeader', () => {
+  beforeEach(() => {
+    localStorage.clear();
+    useAppStore.setState({ sidebarVisible: true, previewVisible: true, zenMode: false });
+  });
+
+  it('renders the app title', () => {
+    render(
+      <ThemeProvider defaultTheme="dark" attribute="class">
+        <AppHeader />
+      </ThemeProvider>
+    );
+    expect(screen.getByText(/markdownconverter/i)).toBeInTheDocument();
+  });
+
+  it('toggles sidebar when sidebar button clicked', async () => {
+    render(
+      <ThemeProvider defaultTheme="dark" attribute="class">
+        <AppHeader />
+      </ThemeProvider>
+    );
+    const btn = screen.getByRole('button', { name: /toggle sidebar/i });
+    await userEvent.click(btn);
+    expect(useAppStore.getState().sidebarVisible).toBe(false);
+  });
+});
@@ -0,0 +1,49 @@
+import { describe, it, expect, beforeEach, vi } from 'vitest';
+import { render, screen } from '@testing-library/react';
+import { ThemeProvider } from '@/components/theme-provider';
+import { AppShell } from '@/components/layout/AppShell';
+import { useAppStore } from '@/stores/app-store';
+
+// Mock react-resizable-panels for jsdom environment
+vi.mock('@/components/ui/resizable', () => ({
+  ResizablePanelGroup: ({ children, direction, onLayout }: any) => (
+    <div data-testid="resizable-panel-group" data-direction={direction}>
+      {children}
+    </div>
+  ),
+  ResizablePanel: ({ children, defaultSize, minSize, maxSize }: any) => (
+    <div data-testid="resizable-panel" data-size={defaultSize} data-min={minSize} data-max={maxSize}>
+      {children}
+    </div>
+  ),
+  ResizableHandle: () => <div data-testid="resizable-handle" />,
+}));
+
+describe('AppShell', () => {
+  beforeEach(() => {
+    localStorage.clear();
+    useAppStore.setState({ sidebarVisible: true, previewVisible: true, zenMode: false });
+  });
+
+  it('renders all shell surfaces when sidebar and preview are visible', () => {
+    render(
+      <ThemeProvider defaultTheme="dark" attribute="class">
+        <AppShell />
+      </ThemeProvider>
+    );
+    expect(screen.getByText(/markdownconverter/i)).toBeInTheDocument();
+    expect(screen.getByText(/no files open/i)).toBeInTheDocument();
+    expect(screen.getByText(/no file selected/i)).toBeInTheDocument();
+    expect(screen.getByText(/0 words/i)).toBeInTheDocument();
+  });
+
+  it('hides sidebar when sidebarVisible is false', () => {
+    useAppStore.setState({ sidebarVisible: false });
+    render(
+      <ThemeProvider defaultTheme="dark" attribute="class">
+        <AppShell />
+      </ThemeProvider>
+    );
+    expect(screen.queryByText(/file tree placeholder/i)).not.toBeInTheDocument();
+  });
+});
@@ -0,0 +1,10 @@
+import { describe, it, expect } from 'vitest';
+import { render, screen } from '@testing-library/react';
+import { StatusBar } from '@/components/layout/StatusBar';
+
+describe('StatusBar', () => {
+  it('renders zero word count when no file is open', () => {
+    render(<StatusBar />);
+    expect(screen.getByText(/0 words/i)).toBeInTheDocument();
+  });
+});
@@ -0,0 +1,10 @@
+import { describe, it, expect } from 'vitest';
+import { render, screen } from '@testing-library/react';
+import { TabBar } from '@/components/layout/TabBar';
+
+describe('TabBar', () => {
+  it('renders an empty state when no tabs are open', () => {
+    render(<TabBar />);
+    expect(screen.getByText(/no files open/i)).toBeInTheDocument();
+  });
+});
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
amitwh	5d6a55dd09	feat(renderer): StatusBar reads from editor store (word count, cursor pos)	2026-06-05 12:49:16 +05:30
amitwh	0e80e37d9d	feat(renderer): wire EditorPane into AppShell	2026-06-05 12:46:13 +05:30
amitwh	9a7e994224	feat(renderer): EditorPane with empty state and CodeMirror rendering	2026-06-05 12:42:25 +05:30
amitwh	3effacf816	feat(renderer): CodeMirror 6 editor wrapper with markdown, themes, keymaps	2026-06-05 12:38:09 +05:30
amitwh	1be10f9ae5	feat(renderer): CodeMirror light theme with brand-aware syntax colors	2026-06-05 12:25:31 +05:30
amitwh	4c0b7d6e84	feat(renderer): editor store with buffers, dirty state, cursor (immer)	2026-06-05 12:21:48 +05:30
amitwh	db04ea5854	feat(renderer): App.tsx renders AppShell	2026-06-05 12:11:01 +05:30
amitwh	567726022c	feat(renderer): AppShell with resizable panes, sidebar/preview toggle, persisted sizes	2026-06-05 12:02:35 +05:30
amitwh	1999a7716e	feat(renderer): StatusBar placeholder (word count wired in Phase 3)	2026-06-05 11:53:34 +05:30
amitwh	16e071ae5e	feat(renderer): Breadcrumb placeholder (wired in Phase 5)	2026-06-05 11:50:45 +05:30
amitwh	7ecf54ceb0	feat(renderer): Toolbar skeleton with formatting buttons	2026-06-05 11:48:26 +05:30
amitwh	95e2f45f1f	feat(renderer): TabBar skeleton (no tabs yet — wired in Phase 5)	2026-06-05 11:45:33 +05:30
amitwh	7fbbd60525	feat(renderer): AppHeader with sidebar/preview toggles + theme toggle	2026-06-05 11:40:54 +05:30
amitwh	c715bb354c	feat(renderer): install shadcn resizable primitive	2026-06-05 11:35:02 +05:30
amitwh	6525de7667	feat(renderer): add useAppStore with sidebar/preview/zen/pane-sizes	2026-06-05 11:30:25 +05:30
amitwh	a2c1d0c11a	feat(renderer): wire App.tsx shell with theme provider and top-bar	2026-06-05 10:19:36 +05:30
amitwh	e0d6315204	feat(renderer): add next-themes provider + theme toggle (sun/moon)	2026-06-05 10:17:38 +05:30
amitwh	68ff7d076a	feat(renderer): install shadcn button primitive with tests	2026-06-05 10:13:31 +05:30
amitwh	67b57eae78	feat(renderer): add motion preset transitions for modals/sidebar/toasts	2026-06-05 09:37:49 +05:30
amitwh	301c51ac84	test(renderer): add failing test for motion presets	2026-06-05 09:36:18 +05:30
amitwh	904ffbdd5b	feat(renderer): implement typed IPC wrapper with IpcResult discriminated union	2026-06-05 09:34:19 +05:30
amitwh	ea383783ec	test(renderer): add failing test for ipc wrapper + IpcResult types	2026-06-05 09:25:02 +05:30
amitwh	e758a81c4c	feat(renderer): implement cn() helper for tailwind-merge + clsx	2026-06-05 09:23:30 +05:30
amitwh	ea0f3f93bf	test(renderer): add failing test for cn() helper + vitest config	2026-06-05 09:20:04 +05:30
amitwh	188e73d7c1	feat(renderer): configure shadcn/ui, extend design tokens for glassy aesthetic	2026-06-05 09:13:52 +05:30
amitwh	8265e4ff88	chore(deps): add shadcn/ui ecosystem, motion, zustand+immer, test stack	2026-06-05 09:01:45 +05:30
amitwh	8a8671b128	docs(plan): add React UI redesign implementation plan (10 vertical slices) - Phase 1: Foundation (shadcn, deps, lib utils, motion presets, theme) - Phase 2: App shell + resizable panes - Phase 3: Editor (CodeMirror 6 + immer store) - Phase 4: Preview (marked + KaTeX + mermaid + scroll sync) - Phase 5: File tree + tabs - Phase 6: Native menus + toolbar - Phase 7: Modals (export, settings, about, confirm) - Phase 8: Toasts (sonner) - Phase 9: Advanced tools (zen, repl, ascii, table, print, word) - Phase 10: Polish + delete legacy renderer Phases 1-4 are fully fleshed out (60+ TDD tasks with working code). Phases 5-9 are sketched with the same TDD pattern; detailed steps will be expanded at execution time following the conventions established in Phases 1-4.	2026-06-05 08:52:03 +05:30
amitwh	3646dc29c6	docs(spec): fix spec self-review issues (typo, drag-vs-resize, lazy-load ambiguity)	2026-06-05 08:27:33 +05:30
amitwh	a999f598cc	docs(spec): add React + shadcn/ui UI redesign design spec Brainstormed via superpowers:brainstorming. Locks in: - Full feature parity with legacy renderer - Polished + Glassy (Raycast/Arc) visual style - IDE-style layout with draggable divider - shadcn/ui + Motion (Framer Motion) + Zustand stack - A/B/D modal patterns (no command palette) - 10-phase vertical-slice implementation plan	2026-06-05 08:26:02 +05:30
amitwh	7a396f64a6	feat(renderer): setup React, Vite, Tailwind CSS and Zustand state management	2026-06-03 23:23:59 +05:30
amitwh	88e9a5290d	fix(renderer): add ensureEditor fallback and fix pandoc export path 1. Source editor blank: Added ensureEditor() method with try-catch that lazily creates the CodeMirror editor when setEditorContent is called if the initial DOMContentLoaded creation failed or was skipped. Replaced inline createEditor calls in createTabElements and DOMContentLoaded with ensureEditor(). 2. Export via pandoc failing: runPandocCmd parsed the full path /bin/linux/pandoc as the command, then prepended it to args because parsed.command !== 'pandoc'. This caused pandoc to receive its own binary path as the first input file. Fix: use path.basename() to check if the command ends with 'pandoc' (or 'pandoc.exe'). Amit Haridas	2026-06-03 20:44:00 +05:30
amitwh	fff15d8d3e	fix(renderer): add window.electronAPI shim and update CSP for KaTeX The main window uses nodeIntegration without preload, so window.electronAPI was undefined. This caused the DOMContentLoaded handler to crash at: await window.electronAPI.getAppVersion() which prevented the CodeMirror editor from being created (blank source window) and stopped renderer-ready from being sent (broken menu/options). Fixes: 1. Add window.electronAPI shim at top of renderer.js wrapping ipcRenderer. 2. Update CSP meta tag to allow KaTeX CDN (style-src, script-src, font-src). Amit Haridas	2026-06-03 15:37:20 +05:30
amitwh	c574d77c20	fix(renderer): remove let ModalManager to prevent SyntaxError on load ModalManager.js is loaded via <script> tag in index.html, which declares class ModalManager in the global script scope. renderer.js was then doing 'let ModalManager;' which caused: SyntaxError: Identifier 'ModalManager' has already been declared This prevented renderer.js from executing at all, breaking tabs, editor, file open, and preview rendering. Fix: conditionally require ModalManager only if undefined, without re-declaring. In sloppy mode this safely assigns to the existing global. Amit Haridas	2026-06-03 15:25:22 +05:30
amitwh	272215f9af	fix(renderer): prevent welcome screen from overwriting opened markdown files The welcome tab setup awaited getAppVersion() inside DOMContentLoaded. While yielding, the renderer-ready timeout fired, file-opened was processed, and openFile rendered the markdown. When the welcome setup resumed, it overwrote tab.content and preview.innerHTML with the welcome screen, leaving the preview blank. Fix: only show the welcome screen if the tab is still empty (no filePath and no content) when the async setup resumes. Amit Haridas	2026-06-03 15:14:41 +05:30
amitwh	0192590567	fix(renderer): add missing closing brace for redo IPC handler The ipcRenderer.on('redo') callback was missing its closing }); introduced in `a9e05d2`, causing SyntaxError: Unexpected end of input. Amit Haridas	2026-06-03 14:36:59 +05:30