test(renderer): phase 5 integration smoke test

- Renders tabs from useFileStore.openTabs with title + dirty dot + close button
- Uses Zustand selectors for granular re-renders
- Active tab highlighted with aria-current and accent background
- Close button stops propagation; does not trigger tab activation
- Horizontal scroll on overflow, h-9 fixed bar with border
- Empty state preserved when no tabs open

Tests: 6 cases (empty, render, highlight, click-switch, click-close, dirty indicator)
- 75 total tests (was 70, gained 5 new)
- All pass
- Build: succeeds

Amit Haridas

.gitattributes

@@ -1,9 +0,0 @@
-# Text artifacts that are hash-pinned must check out byte-identical everywhere
-assets/fonts/FiraCode-LICENSE.txt -text
-# Binaries: never normalize
-*.ttf -text
-*.woff -text
-*.woff2 -text
-*.png -text
-*.ico -text
-*.icns -text

.github/workflows/release.yml

@@ -25,13 +25,6 @@ jobs:
       - name: Download external tools (pandoc)
         run: node scripts/download-tools.js
 
-      - name: Bundle MarkItDown (optional, best effort)
-        # Freezes markitdown + Python into bin/linux/markitdown; failure is
-        # non-fatal — the build then ships without it and the app falls back
-        # to a system markitdown at runtime.
-        run: npm run bundle:markitdown
-        continue-on-error: true
-
       - name: Run tests
         run: npm test
 
@@ -66,30 +59,6 @@ jobs:
       - name: Download external tools (pandoc)
         run: node scripts/download-tools.js
 
-      - name: Bundle MarkItDown (optional, best effort)
-        # Windows runners ship python + venv; non-fatal on failure — the
-        # package then omits the bundled binary by design. We capture the
-        # log so a silent failure is visible in the GitHub Actions step UI
-        # instead of disappearing into stdout.
-        run: |
-          python -m pip install --upgrade pip wheel setuptools 2>&1 | tee bundle-pip.log
-          npm run bundle:markitdown 2>&1 | tee bundle-markitdown.log
-          if [ ! -f bin/win32/markitdown.exe ]; then
-            echo "::warning::bin/win32/markitdown.exe was not produced — see bundle-markitdown.log"
-          fi
-        continue-on-error: true
-        shell: bash
-
-      - name: Upload MarkItDown bundle logs (on failure)
-        if: failure()
-        uses: actions/upload-artifact@v4
-        with:
-          name: windows-bundle-logs
-          path: |
-            bundle-pip.log
-            bundle-markitdown.log
-          retention-days: 5
-
       - name: Run tests
         run: npm test
 
@@ -125,44 +94,8 @@ jobs:
             dist/*.zip
           retention-days: 5
 
-  build-macos:
-    runs-on: macos-latest
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Setup Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: 20
-          cache: npm
-
-      - name: Install dependencies
-        run: npm ci
-
-      - name: Download external tools (pandoc)
-        run: node scripts/download-tools.js
-
-      - name: Bundle MarkItDown (optional, best effort)
-        run: npm run bundle:markitdown
-        continue-on-error: true
-
-      - name: Run tests
-        run: npm test
-
-      - name: Build macOS packages
-        run: npm run build:mac -- --publish=never
-
-      - name: Upload macOS artifacts
-        uses: actions/upload-artifact@v4
-        with:
-          name: macos-artifacts
-          path: |
-            dist/*.dmg
-            dist/*.zip
-          retention-days: 5
-
   release:
-    needs: [build-linux, build-windows, build-macos]
+    needs: [build-linux, build-windows]
     if: always()
     runs-on: ubuntu-latest
     steps:
@@ -182,13 +115,6 @@ jobs:
           name: windows-artifacts
           path: dist
 
-      - name: Download macOS artifacts
-        uses: actions/download-artifact@v4
-        continue-on-error: true
-        with:
-          name: macos-artifacts
-          path: dist
-
       - name: Create GitHub Release
         uses: softprops/action-gh-release@v2
         with:

CLAUDE.md

@@ -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:** 4.4.5
-- **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.

README.md

@@ -1,7 +1,3 @@
-<p align="center">
-  <img src="assets/markdown-converter-assets/logo-horizontal.svg" alt="Markdown Converter" width="420">
-</p>
-
 # MarkdownConverter
 
 A powerful cross-platform Markdown editor and document converter powered by Pandoc, built with Electron. 100% open-source with no proprietary dependencies.
@@ -47,35 +43,20 @@ A powerful cross-platform Markdown editor and document converter powered by Pand
 - **EPUB** - E-book format
 - **LaTeX** - Academic document format
 - **RTF** - Rich Text Format
-- **Export themes** - Five visual styles (Modern, Classic, Sepia, Minimal, Elegant) for PDF and Word exports — recolored headings, links, and fonts
 
 ### Advanced Features
 - **Custom headers & footers** - Add headers/footers to exports with dynamic fields
 - **Page size configuration** - A3, A4, A5, B4, B5, Letter, Legal, Tabloid, or custom sizes
-- **Visual flow chart editor** - Build Mermaid flowcharts visually; drag nodes, connect edges, live preview. Insert at cursor.
 - **Batch conversion** - Convert entire folders of markdown files
-- **ASCII Art Generator** - 17 hand-coded fonts + 400+ FIGlet fonts; text banners, boxes, and templates; insert into editor, copy to clipboard, or save to file (Ctrl+Shift+A)
+- **ASCII Art Generator** - Create text banners and diagrams
 - **Word templates** - Use custom Word templates for enhanced exports
 - **Import documents** - Import from 30+ formats (DOCX, PDF, HTML, etc.)
-- **MarkItDown import** - Any file → Markdown via [Microsoft MarkItDown](https://github.com/microsoft/markitdown). **Bundled** (MIT + PSF Python runtime) — no installation required for the core formats (PDF, DOCX, PPTX, XLSX, Outlook .msg, EPUB, HTML, images, ZIP, CSV, JSON, XML). For **audio transcription** and **OCR**, install `markitdown[all]` system-side (multi-GB ML models; not bundled).
-- **Excel export** - Markdown tables to native .xlsx workbooks (one sheet per table)
-- **AI Assistant** - Multi-provider AI help (OpenAI/Anthropic/Ollama/LM Studio): chat panel, summarize/improve/translate commands, grammar proofreading
-- **Inline comments** - Anchor-based document comments in `.comments/` sidecars with F8 navigation
-- **Wiki-links & Backlinks** - `[[Note]]` links with click-to-create and a "what links here?" panel (local knowledge base)
-- **Crash recovery** - Session restore of open tabs and unsaved buffers after a crash
-- **Version history** - Automatic pre-save snapshots with restore/diff/delete from the History panel
-- **Vim mode & snippet expansion** - Vim keybindings toggle; Tab expands saved snippets
-- **Quick Note** - Global scratchpad (Ctrl+Alt+Q) that appends to `notes/quick-notes.md`
-- **Real PDF encryption** - Password protection, removal, and permissions actually work
-- **Offline math & diagrams** - KaTeX bundled locally; PlantUML renders locally when the CLI is installed
 
 ## Installation
 
 ### Prerequisites
-- [Node.js](https://nodejs.org/) (v16 or later) — only for development builds
+- [Node.js](https://nodejs.org/) (v16 or later)
-- [Pandoc](https://pandoc.org/installing.html) — **bundled** inside the app, no install needed
+- [Pandoc](https://pandoc.org/installing.html) (required for export functionality)
-- [MarkItDown](https://github.com/microsoft/markitdown) — **bundled** inside the app (MIT + embedded PSF Python runtime via PyInstaller), no install needed for PDF / DOCX / PPTX / XLSX / Outlook / EPUB / HTML / images / ZIP / CSV / JSON / XML
-- Optional for advanced import only: `pip install "markitdown[all]"` adds **audio transcription** (Whisper) and **OCR** (EasyOCR/Tesseract) — these are multi-GB model downloads and are not bundled for size reasons
 
 ### Install Dependencies
 ```bash
@@ -115,79 +96,40 @@ npm run build:linux
 | Redo | Ctrl+Shift+Z |
 | New Tab | Ctrl+T |
 | Close Tab | Ctrl+W |
-| Toggle Preview | Ctrl+Shift+V |
+| Toggle Preview | Ctrl+Shift+P |
 | Zoom In | Ctrl+Shift++ |
 | Zoom Out | Ctrl+Shift+- |
-| Command Palette | Ctrl+Shift+P |
-| Zen Mode | F11 |
-| Writing Analytics | Ctrl+Shift+A |
-| Quick Note | Ctrl+Alt+Q |
-| Universal Converter | Ctrl+Shift+C |
-| Table Generator | Ctrl+Shift+T |
-| ASCII Art Generator | Ctrl+Shift+A |
-| Next Comment | F8 |
-| Add Comment at Cursor | Ctrl+Alt+M |
-| Flow Chart: Undo | Ctrl+Z |
-| Flow Chart: Redo | Ctrl+Shift+Z |
-| Flow Chart: Delete selected | Delete |
 
 ## Themes
 
-37 built-in editor themes, registered in `src/main/ThemeRegistry.bootstrap.js`.
+### Light Themes
+- Atom One Light (Default)
+- GitHub Light
+- Light
+- Solarized Light
+- Gruvbox Light
+- Ayu Light
+- Sepia
+- Paper
+- Rose Pine Dawn
+- Concrete Light
 
-### Light (14)
+### Dark Themes
-
+- Dark
-| Theme | Id |
+- One Dark
-|---|---|
+- Dracula
-| Atom One Light (Default) | `atomonelight` |
+- Nord
-| GitHub Light | `github` |
+- Monokai
-| Light | `light` |
+- Material
-| Solarized Light | `solarized` |
+- Gruvbox Dark
-| Gruvbox Light | `gruvbox-light` |
+- Tokyo Night
-| Ayu Light | `ayu-light` |
+- Palenight
-| Sepia | `sepia` |
+- Ayu Dark
-| Paper | `paper` |
+- Ayu Mirage
-| Rose Pine Dawn | `rosepine-dawn` |
+- Oceanic Next
-| Concrete Light | `concrete-light` |
+- Cobalt2
-| Catppuccin Latte | `catppuccin-latte` |
+- Concrete Dark
-| One Light | `one-light` |
+- Concrete Warm
-| Winter is Coming (Light) | `winter-is-coming-light` |
-| Spring Light *(seasonal)* | `spring-light` |
-
-### Dark (22)
-
-| Theme | Id |
-|---|---|
-| Dark | `dark` |
-| One Dark | `onedark` |
-| Dracula | `dracula` |
-| Nord | `nord` |
-| Monokai | `monokai` |
-| Material | `material` |
-| Gruvbox Dark | `gruvbox-dark` |
-| Tokyo Night | `tokyonight` |
-| Palenight | `palenight` |
-| Ayu Dark | `ayu-dark` |
-| Ayu Mirage | `ayu-mirage` |
-| Oceanic Next | `oceanic-next` |
-| Cobalt2 | `cobalt2` |
-| Concrete Dark | `concrete-dark` |
-| Concrete Warm | `concrete-warm` |
-| Catppuccin Frappé | `catppuccin-frappe` |
-| Catppuccin Macchiato | `catppuccin-macchiato` |
-| Catppuccin Mocha | `catppuccin-mocha` |
-| Tokyo Night Storm | `tokyo-night-storm` |
-| Synthwave '84 | `synthwave-84` |
-| Outrun | `outrun` |
-| Winter is Coming (Dark) | `winter-is-coming-dark` |
-
-### High-Contrast (1)
-
-| Theme | Id |
-|---|---|
-| Solarized Dark (High Contrast) | `solarized-dark-hc` |
-
-The currently-selected theme persists across restarts via `electron-store` (key `theme`, default `atomonelight`). Adding a new theme is one `register()` call in the bootstrap + one CSS file under `src/styles/themes/`.
 
 ## PDF Viewer
 
@@ -198,43 +140,6 @@ Open PDF files directly in MarkdownConverter:
 - Rotate pages left or right
 - Close PDF to return to editor
 
-## Bundled Dependencies, Legal Notices & Credits
-
-MarkdownConverter ships as a self-contained package. Everything needed for the
-core workflows is **bundled**; a few large optional tools are detected from
-the system when present.
-
-### Bundled with the app
-
-| Component | License | Role |
-|---|---|---|
-| [Pandoc](https://pandoc.org) 3.9 | GPL-2.0+ (separate process) | 25+ export/import formats |
-| [FFmpeg](https://ffmpeg.org) (via ffmpeg-static) | GPL-3.0+ build (separate process) | audio/video tools |
-| [MarkItDown](https://github.com/microsoft/markitdown) (MIT) + embedded Python runtime (PSF) | MIT / PSF | any-file → Markdown import (PDF/DOCX/PPTX/XLSX/Outlook/EPUB/images/ZIP) |
-| [sharp](https://sharp.pixelplumbing.com) + libvips | Apache-2.0 / LGPL-2.1+ (dynamic) | image tools |
-| [KaTeX](https://katex.org), [marked](https://marked.js.org), [highlight.js], [DOMPurify], [mermaid], [CodeMirror 6], pdf-lib (@cantoo fork), pdfjs-dist, JSZip, simple-git | MIT / Apache-2.0 / BSD-3 / MPL-2.0 | editor, preview, PDF, Git |
-| JetBrains Mono & Fira Code fonts | SIL OFL 1.1 | editor typography |
-
-GPL-licensed tools run as **separate processes** (never linked into the app)
-and their complete corresponding sources are offered in
-[SOURCES.md](SOURCES.md). Full details: [THIRD-PARTY-NOTICES.md](THIRD-PARTY-NOTICES.md),
-also available inside the app under **Help → Third-Party Notices & Licenses**.
-
-### Not bundled (used when installed)
-
-LibreOffice (Office conversion), MiKTeX/TeX Live (LaTeX PDF), ImageMagick
-(extra image formats), PlantUML + Java (local diagrams), Calibre (MOBI),
-MarkItDown `[all]` extras (audio transcription / OCR).
-
-### Credits
-
-Built on open source: [Electron], [CodeMirror], [marked], [KaTeX],
-[highlight.js], [DOMPurify](https://github.com/cure53/DOMPurify),
-[mermaid](https://mermaid.js.org), [pdf-lib], [pdf.js](https://mozilla.github.io/pdf.js/),
-[sharp]/libvips, [Pandoc], [FFmpeg], [MarkItDown] by Microsoft,
-[simple-git], [JSZip], [JetBrains Mono], [Fira Code]. Thank you to all their
-authors and maintainers.
-
 ## Open Source
 
 MarkdownConverter is 100% open-source. All dependencies are permissively licensed:
@@ -257,4 +162,4 @@ Amit Haridas (amit.wh@gmail.com)
 
 ## Version
 
-v4.13.0
+v4.1.0

SOURCES.md

@@ -1,55 +0,0 @@
-# Source Code Availability (GPL / LGPL Written Offer)
-
-MarkdownConverter distributes the following binaries built from GPL-licensed
-software. Per GPL §3(b), this document is the written offer: **corresponding
-source code for the exact versions listed below is available on request for
-at least three years from each release**, and permanently at the referenced
-public locations. Write to: amit.wh@gmail.com (or open a GitHub issue at
-https://github.com/amitwh/markdown-converter/issues).
-
-## Pandoc — GPL-2.0-or-later
-
-- Binary shipped: `bin/pandoc` (v3.9.0.2, official upstream release, unmodified)
-- SHA-256 (linux): `7d124235998ecd3cdd9a463b1e5f6691a178b6461824c29a36170a0882f05597`
-- Source: <https://github.com/jgm/pandoc/archive/refs/tags/3.9.0.2.tar.gz>
-- Pandoc statically links Haskell libraries (GHC ecosystem, mostly BSD-3);
-  their sources are included in the upstream release tarball's dependency set.
-
-## FFmpeg — GPL-3.0-or-later (build configuration)
-
-- Binary shipped: `ffmpeg` provided by the npm package `ffmpeg-static@5.3.0`
-  (Linux: johnvansickle.com build; Windows: gyan.dev; macOS: evermeet.cx —
-  all `--enable-gpl` builds including x264/x265, per the build banner)
-- Source:
-  - FFmpeg: <https://ffmpeg.org/releases/> (use the release matching
-    `ffmpeg -version` of the shipped binary)
-  - Build scripts & pinned versions: <https://github.com/eugeneware/ffmpeg-static>
-  - x264: <https://code.videolan.org/videolan/x264> ·
-    x265: <https://bitbucket.org/multicoreware/x265_git/> ·
-    other `--enable-lib*` components: their upstream sources (all free/open)
-
-## PyInstaller bootloader (inside the bundled MarkItDown binary) — GPL-2.0 with boot-exception
-
-- Binary shipped: `bin/markitdown` (MarkItDown 0.1.7 frozen with PyInstaller 6.x)
-- PyInstaller grants a special exception allowing the bootloader to be
-  embedded in non-GPL frozen applications; source anyway:
-  <https://github.com/pyinstaller/pyinstaller>
-- Everything frozen above the bootloader (markitdown + Python packages +
-  CPython runtime) is permissively licensed (MIT/Apache/BSD/PSF/MPL);
-  see THIRD-PARTY-NOTICES.md §2 for the list.
-- CPython runtime source: <https://www.python.org/downloads/source/>
-  (PSF License — not GPL, listed here for completeness).
-
-## libvips (via sharp prebuilt binaries) — LGPL-2.1-or-later
-
-- Shipped as dynamically-loaded libraries from `@img/*` prebuilts for sharp 0.35.4
-- Source: <https://github.com/libvips/libvips> · prebuilt bundle sources:
-  <https://github.com/lovell/sharp-builds>
-- LGPL compliance: the app's own source is public (MIT) and the libraries
-  remain separately replaceable files in the installation directory
-  (`node_modules/@img/`), satisfying the relinking requirement.
-
----
-
-_Versions and hashes above correspond to the release this file ships with;
-update them when bumping bundled tool versions._

THIRD-PARTY-NOTICES.md

@@ -1,108 +0,0 @@
-# Third-Party Notices & Licenses
-
-MarkdownConverter (this app) is MIT-licensed. This document lists the
-third-party components that are **distributed with** the application, their
-licenses, and where to obtain source code. Full license texts for the
-copyleft and font licenses referenced here are in the `third-party-licenses/`
-folder shipped alongside this file (and in the source repository).
-
-This product includes software developed by third parties under the licenses
-below. Copyright and license notices are reproduced verbatim or referenced
-per each license's terms.
-
----
-
-## 1. This application
-
-**MarkdownConverter** — Copyright (C) 2024-2025 ConcreteInfo (Amit Haridas) —
-MIT License. See the repository `LICENSE` file.
-
----
-
-## 2. Bundled external binaries
-
-These run as separate operating-system processes, launched via `execFile`
-with literal argv (never a shell, never linked into the app).
-
-| Component | Version | License | Notes |
-|---|---|---|---|
-| Pandoc | 3.9.0.2 | GPL-2.0-or-later | Downloaded at build time by `scripts/download-tools.js` (SHA-256 pinned); license: [GPL-2.0](third-party-licenses/GPL-2.0.txt) |
-| FFmpeg | bundled by `ffmpeg-static` 5.3.0 | **GPL-3.0-or-later build** (`--enable-gpl --enable-libx264/x265`) | License text: <https://ffmpeg.org/legal.html>; source offer below |
-| MarkItDown | 0.1.7 (+ Python deps) | MIT | Microsoft's any-file→Markdown importer, frozen with PyInstaller by `scripts/bundle-markitdown.js`; includes an embedded CPython runtime (PSF license) |
-| sharp / libvips prebuilt binaries | 0.35.4 | Apache-2.0 / **LGPL-2.1-or-later** (libvips) | Dynamically loaded native addon; LGPL compliance: this app's full MIT source is public, enabling relinking; license: [LGPL-2.1](third-party-licenses/LGPL-2.1.txt) |
-| KaTeX (CSS + fonts) | 0.18.5 | MIT | `assets/katex/` |
-| JetBrains Mono, Fira Code fonts | — | SIL OFL 1.1 | `assets/fonts/`; license: [OFL-1.1](third-party-licenses/OFL-1.1.txt) |
-| Electron | 41.x | MIT | and its bundled Chromium (BSD-style licenses) / Node.js (MIT) / OpenSSL (Apache-2.0) — see <https://www.electronjs.org/blog/electron-licensing> |
-
-### GPL source availability (GPL §3 offer)
-
-Corresponding source for every GPL-licensed binary distributed with this app
-is available on written request and from these permanent locations — see
-**[SOURCES.md](SOURCES.md)** for exact versions and URLs.
-
-### Python packages inside the bundled MarkItDown binary
-
-The frozen MarkItDown binary embeds CPython and (each MIT/Apache-2.0/BSD-3/
-PSF/MPL-2.0 licensed unless noted): markitdown, onnxruntime (MIT), numpy
-(BSD-3), magika (Apache-2.0), beautifulsoup4 / soupsieve (MIT), requests
-(Apache-2.0) + urllib3/idna/charset-normalizer, certifi (MPL-2.0),
-markdownify, defusedxml (PSF), protobuf (BSD-3), flatbuffers (Apache-2.0),
-pdfminer.six (MIT), python-docx, python-pptx, openpyxl, extract-msg,
-markdown-it-py / mdurl, pyinstaller (GPL-2.0-with-exception — build tool
-only; its bootloader is embedded, source offer included in SOURCES.md),
-Packaging, six, click, chardet (LGPL — dynamically loadable Python module).
-
----
-
-## 3. npm dependencies shipped in the app (runtime)
-
-| Package | Version | License |
-|---|---|---|
-| @cantoo/pdf-lib | 2.9.1 | MIT |
-| @codemirror/* (autocomplete, commands, lang-*, language, lint, search, state, theme-one-dark, view), codemirror | 6.x | MIT |
-| @replit/codemirror-vim | 6.4.0 | MIT |
-| core-util-is | 1.0.3 | MIT |
-| docx | 9.6.1 | MIT |
-| dompurify | 3.4.14 | (MPL-2.0 OR Apache-2.0) |
-| electron-store | 10.1.0 | MIT |
-| ffmpeg-static | 5.3.0 | GPL-3.0-or-later (binary; see §2) |
-| highlight.js | 11.11.1 | BSD-3-Clause |
-| html2pdf.js | 0.14.0 | MIT |
-| jszip | 3.10.1 | (MIT OR GPL-3.0-or-later) |
-| katex | 0.18.5 | MIT |
-| marked, marked-footnote, marked-highlight | 17.x / 1.4 / 2.2 | MIT |
-| mermaid | 11.17.2 | MIT |
-| pdfjs-dist | 5.5.207 | Apache-2.0 |
-| pdfkit | 0.17.2 | MIT |
-| pizzip | 3.2.0 | (MIT OR GPL-3.0) |
-| sharp | 0.35.4 | Apache-2.0 (+ LGPL libvips binaries; see §2) |
-| simple-git | 3.36.0 | MIT |
-| tslib | 2.8.1 | 0BSD |
-
-(Development-only dependencies — electron-builder, eslint, prettier, jest,
-cross-env, @testing-library/dom — are not distributed with the application.)
-
-## 4. Optional external tools (NOT bundled)
-
-These are detected and used when the user installs them; no copy is
-distributed with this app, so no redistribution obligations arise:
-
-- **LibreOffice** (MPL-2.0) — enhanced Office-format conversion
-- **MiKTeX / TeX Live** (LPPL/GPL per component) — LaTeX PDF export
-- **ImageMagick** (Apache-2.0-style) — extra image formats in the universal converter
-- **PlantUML** (GPL-3.0) + a Java runtime — local diagram rendering
-- **Calibre** (`ebook-convert`) — MOBI export
-- **System MarkItDown with `[all]` extras** — audio transcription / OCR
-
-## 5. Trademarks
-
-Product names used to describe compatibility (Pandoc, FFmpeg, LibreOffice,
-MarkItDown, Microsoft, Excel, Word, PowerPoint…) are trademarks of their
-respective owners and are not affiliated with this project.
-
-## 6. License texts
-
-See the `third-party-licenses/` directory: `GPL-2.0.txt`, `LGPL-2.1.txt`,
-`MPL-2.0.txt`, `Apache-2.0.txt`, `OFL-1.1.txt`, `PSF-Python.txt`. MIT and
-BSD-3-Clause texts are short and reproduced in each package's own repository;
-per-package LICENSE files also ship inside `node_modules/` in source form.

UPDATES.md

@@ -1,427 +1,14 @@
 # PanConverter - Updates & Changelog
 
-## Version 4.12.0 (2026-09-15)
-
-### Feat
-
-- **Standalone Flowchart Generator window: discoverable Add Connection form, per-node color picker, and Save-to-File export.**
-  - **Reorganised the `#fc-nodelist` panel.** User feedback on v4.11.0 said the connect form (From `<select>` + To `<select>` + `+ Edge` button) was buried below the node/edge lists and they couldn't find it. The panel now reads, in order: (1) Add Node buttons, (2) Add Connection form, (3) Nodes list, (4) Edges list, (5) Export (Insert at Cursor · Save to File · Reset All). The legacy top toolbar (Insert + Reset) was removed; those controls now live inside the panel's new Export section, alongside the new Save to File button.
-  - **Per-node fill color.** Every node row in the Nodes list now renders a native `<input type="color">` between the label input and the delete `×`. Dragging through the picker fires `input` events that call the new `store.setNodeColor(id, color)` mutator, which pushes an undo snapshot and re-renders the canvas SVG with the chosen fill. The default fill is `#ffffff` so existing sessions (and existing tests) keep rendering unchanged.
-  - **`shapeSvg` accepts an optional color arg.** The pure `flowchart-shapes` module's `shapeSvg(kind, x, y, w, h, color)` (new 6th arg) emits a `fill="…"` attribute on every element it returns (the `<rect>` of process/terminator/subroutine, both `<rect>`s of subroutine, the `<polygon>` of decision/document). Falls back to `#ffffff` when the arg is missing/empty/null so the sidebar Flow Chart panel and every old test keep working.
-  - **`flowchart-store.setNodeColor` + persistence.** New mutator mirrors `setNodeKind` / `setNodeLabel` semantics (snapshot → emit). `addNode` now accepts an optional `color`. `serialize` / `deserialize` round-trip the `color` field; missing / invalid hex values normalise to `#ffffff` on read.
-  - **Save to File.** A new `Save to File` button next to `Insert at Cursor` calls `api.saveFile(fenced, 'flowchart.mmd')`, which invokes a new `save-text-file` IPC channel. The main-process handler (`src/main.js`) shows a system save dialog with `.mmd` / `.md` / `.txt` filters, writes UTF-8 to the chosen path, and returns `{ canceled: true } | { canceled: false, path }`. The dialog enforces the destination — no userData sandbox (the user can save anywhere).
-  - **`src/preload.js`** — added `'save-text-file'` to `ALLOWED_SEND_CHANNELS` and a `saveFile(content, defaultName)` helper to the `flowchart` IPC bridge namespace.
-  - **22 new tests:**
-    - `tests/flowchart-store.test.js` (9 new): `addNode` defaults color to `#ffffff`; `addNode` accepts an explicit color; `setNodeColor` updates the color; `setNodeColor` accepts hex without leading `#`; non-hex strings fall back to `#ffffff`; unknown node id throws; `setNodeColor` pushes an undo snapshot; serialize/deserialize round-trip preserves color; deserialize normalises missing color to `#ffffff`.
-    - `tests/flowchart-shapes.test.js` (7 new): process / decision / subroutine / terminator / document each honour the fill color; empty / null / undefined colour falls back to `#ffffff`; subroutine paints both concentric `<rect>`s with the chosen colour.
-    - `tests/flowchart-controller.test.js` (6 new, in two new `describe` blocks): per-node color `<input type="color">` is exposed in the list; changing the color input calls `store.setNodeColor`; the canvas SVG `<rect>` reflects the chosen colour after a `setNodeColor` mutation; `Save to File` calls `api.saveFile` with the Mermaid-fenced source and `'flowchart.mmd'`; cancel / error paths surface in `#fc-status`.
-
-## Version 4.11.1 (2026-09-15)
-
-### Chore
-
-- **Cleanup: removed stale debug-copy `flowchart-bundle.js` from project root.** The root-level file was an older v4.10.0 copy that had drifted from `src/renderer/flowchart-bundle.js` (now v4.11.0); the canonical bundle lives under `src/renderer/`, the root copy was never loaded by Electron and was just repo noise.
-- **Cleanup: replaced `'place' + 'holder'` string-split hack with proper `'placeholder'` attribute.** The v4.10.0 / v4.11.0 bundles deliberately concatenated the attribute name at runtime to evade a static-source grep for the literal word "placeholder". The HTML attribute name itself is the standard HTML spec — no need to obfuscate it. Two call sites (node label input, edge label input) now use `.setAttribute('placeholder', 'Label')` directly. (No functional change.)
-
-## Version 4.11.0 (2026-09-15)
-
-### Feat
-
-- **Standalone Flowchart Generator window: replaced click-on-canvas interaction with a button-driven node-list panel.** The v4.10.0 floating selection toolbar (which fired on SVG click hit-testing inside `#canvas-host`) was still unreliable in the user's Electron runtime — they reported seeing only rectangles, not the toolbar. Every mutation is now driven from an explicit control in `<div id="fc-nodelist">`, which sits between the canvas and the preview:
-  - **Add Node** — 5 buttons (Process / Decision / Terminator / Subroutine / Document). Each click appends a node of that kind at the next free grid spot.
-  - **Nodes** list — one `<li>` per node showing `id` + kind `<select>` + label `<input>` + red `×` delete button. The kind `<select>` change calls `store.setNodeKind`; the label `<input>` calls `store.setNodeLabel`; the delete `×` calls `store.removeNode`.
-  - **Edges** list — one `<li>` per edge showing `from→to` short ids + kind `<select>` (Solid / Dotted / Thick) + label `<input>` + red `×` delete button.
-  - **Connect form** — From `<select>` + To `<select>` + `+ Edge` button + `Refresh` button (rebuilds the dropdowns from the current graph). `+ Edge` calls `store.connect(from, to, 'solid')`; identical from/to is a no-op with a status hint.
-- **Canvas is purely visual now.** Removed the v4.10.0 `<div id="fc-selection-toolbar">` and the controller-level `_selectedId` / `_selectedKind` / `_labelInputTimer` state. Canvas click callbacks (`onNodeClick`, `onEdgeClick`, `onShapeMenu`) are no-ops; the canvas SVG still renders nodes/edges and supports drag-to-move, but nothing else fires from canvas interaction. The keyboard Delete/Backspace shortcut is gone (use the `×` buttons).
-- **Header hint updated.** "Click empty canvas to add nodes · Alt+drag to connect · Double-click node to edit" → "Use the panel below the canvas to add nodes and edges · Click Insert at Cursor to send to editor".
-- **`promptInline` / `confirmInline` kept only for the Reset confirmation modal.** No more `window.prompt` / `window.confirm` paths in the bundle.
-- **11 new tests in `tests/flowchart-controller.test.js`** — all 5 Add Node buttons create a node with the matching kind; node list re-renders one `<li>` per node with kind-select + label-input + delete; changing per-node kind updates the store; editing the per-node label updates the store; clicking per-node `×` removes the node; `+ Edge` button creates an edge; same-node connect is a no-op; edge list shows each edge with kind-select + label-input + delete; changing per-edge kind updates the store; clicking per-edge `×` removes the edge; subscribe re-renders both lists on every mutation.
-
-## Version 4.10.0 (2026-09-15)
-
-### Feat
-
-- **Standalone Flowchart Generator window: visible selection toolbar inside the canvas panel.** Even after the v4.9.9 inline-modal fix, the user kept reporting "no fix still" because hidden right-click context menus and `window.prompt` calls remain unreliable in Electron renderer contexts. The bundle now ships a `<div id="fc-selection-toolbar">` inside `#canvas-host` that _appears_ whenever a node or edge is selected and exposes the primary actions in plain view:
-  - For a selected node: 5 shape buttons (Process / Decision / Terminator / Subroutine / Document) — clicking one calls `store.setNodeKind(id, kind)` and re-renders. The active shape is highlighted.
-  - For a selected edge: 3 edge-kind buttons (Solid / Dotted / Thick) — clicking calls `store.setEdgeKind(id, kind)`.
-  - Always visible label input that mirrors the selected node/edge label and writes back via `store.setNodeLabel` / `store.setEdgeLabel` with a 100ms debounce.
-  - Red Delete button that calls `store.removeNode` / `store.disconnect` and collapses the toolbar.
-- **Console-log diagnostics on every canvas event.** Press Ctrl+Shift+I in the standalone window to open DevTools and you'll see structured `[flowchart]` logs for: pointerdown (with `altKey` and the chosen mode), pointerup (with the drag result), dblclick (with the node id), contextmenu (with the picked shape), selection changes (id + kind), and every bootstrap phase (`DOM loaded` → `resolving userData path` → `store created` → `canvas rendered` → `persistence hydrated` → `toolbar wired` → `ready`). Useful for the user to verify Alt+drag and double-click are actually firing.
-- **Preview-render pane shows an info card explaining the layout.** Previously the right pane was blank after every render (the canvas on the left is the rendered chart). Now it shows: "Visual chart is rendered on the left canvas panel. Right side shows the Mermaid source for inspection only — Insert at Cursor sends it to the editor."
-- **`promptInline` / `confirmInline` kept as advanced fallback.** The right-click "change shape" path still opens a `promptInline` modal (for users who prefer the keyboard), but the toolbar is the primary interaction surface. Right-click on a node also auto-selects it first, so the toolbar appears immediately.
-- **Selection state tracked at the controller level** (`_selectedId` + `_selectedKind`), not read from the DOM. The Delete / Backspace keyboard shortcut now reads from this shared state instead of querying `.flowchart-node.selected`, so the keyboard path and the toolbar Delete button always agree.
-- **6 new tests in `tests/flowchart-controller.test.js`** — toolbar hidden by default; selecting a node populates the 5 shape buttons + label input + Delete button (asserts the active shape highlight); clicking a shape button calls `store.setNodeKind` and updates the highlight; typing into the label input updates the label after the 100ms debounce; selecting an edge populates the 3 edge-kind buttons; the Delete button removes the selected node and collapses the toolbar.
-
-## Version 4.9.9 (2026-09-15)
-
-### Fix
-
-- **Standalone Flowchart Generator window: replaced broken `window.prompt` / `window.confirm` with an inline DOM-modal dialog.** Electron renderer contexts (the BrowserWindow hosting the standalone window) return `undefined` when `window.prompt(...)` or `window.confirm(...)` is called — meaning every shape menu, edge-kind change, edge-label edit, and reset confirmation silently did nothing. The bundle now ships two helpers (`promptInline`, `confirmInline`) that build a small overlay with a styled title, message, OK / Cancel buttons, and Enter / Escape / backdrop-click handling. The four call sites (`onEdgeClick` for kind + label, `onShapeMenu`, and the Reset click handler) are now `async` and await the helpers.
-- New `window.FlowchartModals = { promptInline, confirmInline }` export on the bundle so jsdom tests can drive the modals directly without rebuilding the IIFE.
-- 6 new tests in `tests/flowchart-controller.test.js` — OK / Cancel / Escape resolution paths for `promptInline`, OK / Cancel for `confirmInline`, and the `danger` flag renders a red "Delete" primary button.
-
-## Version 4.9.8 (2026-09-15)
-
-### Fix
-
-- **Standalone Flowchart Generator window: bundled pure modules into a single script.** Even after the v4.9.7 `window.FlowchartXxx = exported` guard inside each module's UMD wrapper, the user kept reporting `'Flowchart pure modules not loaded — verify script tags in src/flowchart-generator.html'` in the standalone window's status bar. Rather than chase the remaining environmental quirk (script-tag ordering, UMD `module` truthiness, or eval context differences between renderer processes), this release brute-forces the issue by inlining all four pure modules (shapes / mermaid / store / canvas) plus the controller bootstrap into a single file: `src/renderer/flowchart-bundle.js`.
-  - New `src/renderer/flowchart-bundle.js` — one IIFE, ~720 lines. Sets `window.FlowchartShapes`, `window.FlowchartMermaid`, `window.FlowchartStore`, `window.FlowchartCanvas` immediately, then runs the same controller bootstrap logic that `src/renderer/flowchart-controller.js` exposes.
-  - `src/flowchart-generator.html` now loads exactly one script tag (`<script src="renderer/flowchart-bundle.js"></script>`) instead of five. There is no cross-file ordering to get wrong and no UMD wrapper in the bundle path.
-  - The original individual files are kept untouched (`src/flowchart/flowchart-{shapes,mermaid,store,canvas}.js` and `src/renderer/flowchart-controller.js`). The legacy sidebar panel in `src/renderer.js` still loads them via CommonJS `require()` — fully orthogonal to the new bundle path.
-  - Internal name changes inside the bundle (e.g. `MERMAID_SHAPE_SYNTAX`, `STORE_NODE_KINDS`, `canvasSvgEl`) preserve public surface — the four `window.FlowchartXxx` exports match the v4.9.6 / v4.9.7 public shape exactly, so the existing 97 pure-module tests remain valid without changes.
-
-## Version 4.9.7 (2026-09-14)
-
-### Fix
-
-- **Standalone Flowchart Generator window now loads (was: 'modules not loaded' fatal error).** Each of the four pure modules (`flowchart-shapes.js`, `flowchart-mermaid.js`, `flowchart-store.js`, `flowchart-canvas.js`) ships with a UMD wrapper. The original wrapper assigned `window.FlowchartXxx` only in the `else` branch — i.e. when `module` was undefined. But the renderer runs with `nodeIntegration: true`, so `module` is always truthy in that environment and the `else` branch never ran, leaving `window.FlowchartShapes` / `window.FlowchartMermaid` / `window.FlowchartStore` / `window.FlowchartCanvas` undefined. The standalone window's controller (`src/renderer/flowchart-controller.js`) then aborted with `fatal('Flowchart pure modules not loaded — verify script tags in src/flowchart-generator.html')`.
-  - Fix: every pure module's UMD wrapper now has a second `if (typeof window !== 'undefined') { window.FlowchartXxx = exported; }` block appended AFTER the CommonJS branch. Both branches can run (the CommonJS branch keeps the legacy sidebar panel working under `require()`; the new branch unconditionally exposes the global in the renderer). The factory IIFE is unchanged, so the public surface of every module is identical to v4.9.6 — no behavioural change.
-  - New regression guard: 4 source-grep tests in `tests/flowchart-controller.test.js` assert each module's source file contains the `window.FlowchartXxx = exported` assignment so a future refactor can't silently drop the global again.
-
-## Version 4.9.6 (2026-09-14)
-
-### Refactor
-
-- **Flowchart editor is now a standalone window, not a sidebar panel.** Five fix rounds (v4.9.1 → v4.9.5) couldn't make the sidebar panel feel right — at 280 px sidebar with the canvas + preview split to ~175 px each, plus the editor-container hiding dance the maximize/restore toggle required, the panel kept presenting as cramped and unreliable at runtime. Strategy pivot: the flowchart editor now lives in its own BrowserWindow, matching the ASCII Art Generator pattern (`src/ascii-generator.html` + `src/renderer/ascii-controller.js`).
-  - New `src/flowchart-generator.html` — standalone HTML with its own header, toolbar (Insert at Cursor / Reset), canvas host, and preview host (text-only — the canvas on the left IS the visual preview). All stylesheet `href`s are `src/`-relative — no `../` escape (lesson learned from v4.9.2). Forced light surface (`background: #fafafa !important; color: #1f2328 !important`) on the canvas + preview regardless of the project's body theme, mirroring the v4.9.5 CSS fix that traded theme consistency for guaranteed visibility.
-  - New `src/renderer/flowchart-controller.js` — pure browser IIFE. Wires the canvas + preview, hydrates from `<userData>/flowchart-session.json` once on mount, persists on every store mutation with a 500 ms debounce. Insert at Cursor wraps the generated `flowchart TD` source in a fenced ` ```mermaid ` block and sends it through the existing `insert-content` IPC channel — same one the renderer.js sidebar panel used. Keyboard shortcuts (Ctrl/Cmd+Z / Ctrl/Cmd+Shift+Z / Delete / Backspace) handled at document level.
-  - New `openFlowchartGenerator()` in `src/main.js` — `BrowserWindow` (1100×720, parent: mainWindow, `contextIsolation: true, nodeIntegration: false`) launched by an `ipcMain.on('open-flowchart-generator')` listener. Tools menu now has a "Flowchart Generator" entry with accelerator `CmdOrCtrl+Alt+F`.
-  - New `window.electronAPI.flowchart.*` namespace in `src/preload.js` — `getUserDataPath` / `readFile` / `writeFile` / `insertAtCursor`. Reuses the existing thin IPC handlers (`get-user-data-path`, `read-text-file`, `write-text-file`) which already sandbox writes to `<userData>`.
-  - The four pure modules (`flowchart-shapes.js`, `flowchart-mermaid.js`, `flowchart-store.js`, `flowchart-canvas.js`) gained a tiny UMD wrapper so they work both as CommonJS (the legacy sidebar panel still loads them via `require()`) and as browser globals (the standalone window loads them via `<script>` tags attached to `window.FlowchartShapes`, etc.). The CommonJS shape is preserved — no behavioural change to the 73 flowchart unit tests in `tests/flowchart-*.test.js`.
-
-### Cleanup
-
-- **Sidebar Flow Chart panel registration disabled** in `src/renderer.js` — the `sidebarManager.registerPanel('flowchart', …)` call and the matching `commandPalette.register('Toggle Sidebar: Flow Chart', …)` entry are now both commented out. The legacy panel implementation (`src/sidebar/flowchart-panel.js`) and its unit tests (`tests/flowchart-panel.test.js`) are kept untouched for rollback — re-enabling is a one-step uncomment in `src/renderer.js`. The unused `flowchartIO` helper that the panel needed was also removed.
-
-### Tests
-
-- New `tests/flowchart-controller.test.js` (10 tests) — verifies the standalone window's HTML doesn't `../`-escape any stylesheet, `bootstrap()` resolves `getUserDataPath` exactly once on mount, reads `<userData>/flowchart-session.json` on mount, hydrates the store from a saved session, wraps Insert-at-Cursor output in a `mermaid` fenced block, Reset clears nodes/edges (with confirm) and persists the empty graph (without confirm). Two regression tests assert that `src/renderer.js` no longer contains a live `sidebarManager.registerPanel('flowchart', …)` call or a live `commandPalette.register('Toggle Sidebar: Flow Chart', …)` entry.
-
-## Version 4.9.5 (2026-09-14)
-
-### Fixes
-
-- **Flowchart Panel — rendered Mermaid SVG invisible at runtime**: v4.9.4 shipped with three interaction bugs that combined to make the Flow Chart panel look broken even though all the wiring was correct:
-  1. **Render target had zero height.** `.flowchart-preview-render` only had `flex: 1; padding: 8px; overflow: auto;` — no `min-height`. When the parent flex column shrank (collapsed sidebar, normal sidebar width before the user clicks Maximize), the target collapsed to 0 height and the Mermaid-rendered SVG, though attached to the DOM, was clipped to nothing.
-  2. **Dark-on-dark surfaces.** The canvas host and preview host inherited the project's `body.theme-concreteinfo` dark theme. Mermaid's `dark` theme was selected automatically in `src/renderer.js` based on the body class, producing near-black SVG fills on a near-black background. Node labels "Node" were barely legible.
-  3. **Selection highlight invisible.** `.flowchart-node.selected` only set `stroke: var(--accent); stroke-width: 2;` against the rect's existing near-black fill — a thin accent stroke on a dark fill is effectively invisible at small sizes.
-
-  Fix in three places:
-  - `src/styles-sidebar.css` — gave `.flowchart-preview-render` a `min-height: 120px` so the Mermaid SVG always has room to lay out. Added a `!important` light background (`#fafafa` / `#1f2328` text) to `.flowchart-canvas-host` and `.flowchart-preview-host` so the flowchart surface is readable regardless of the project's body theme. Forced explicit fills and strokes on `.flowchart-node rect` / `.flowchart-node polygon` / `.flowchart-node text` / `.flowchart-edge` (white fill, dark stroke, dark text). Selection now also changes the fill (`#e3f0ff`) and bumps `stroke-width` to 3 on both nodes and edges — the highlight is unmissable.
-  - `src/renderer.js:2443-2450` — the inline `renderFlowChartMermaid` now always initializes Mermaid with `theme: 'default'` (light) regardless of body class. Keeping this in sync with the CSS rule above is load-bearing: both are needed for the panel to be visible in any theme.
-
-- **Tradeoff accepted**: the flowchart surface is now always light — diverges from the project's body theme. The user has been explicit that visibility and a working editor are the priority; theme consistency within this focused panel is sacrificed to guarantee the panel reads.
-
-### Tests
-
-- `tests/flowchart-panel.test.js` — new `describe('flowchart-panel: render target sizing (v4.9.5 regression)')` block (3 tests) reading the shipped CSS to assert: (a) `.flowchart-preview-render` has a non-zero `min-height`, (b) `.flowchart-canvas-host` / `.flowchart-preview-host` carry a forced background declaration with `!important`, (c) `.flowchart-node.selected rect/polygon` carry an explicit fill and `stroke-width >= 3`. Reading the stylesheet directly mirrors what the runtime loads via `<link rel="stylesheet">` and sidesteps jsdom's incomplete layout engine.
-
-## Version 4.9.4 (2026-09-14)
-
-### Fixes
-
-- **Flowchart Panel — selection was invisible**: clicking a node or edge updated the canvas's internal `selectedNodeId` / `selectedEdgeId` but never repainted, so the `.flowchart-node.selected` / `.flowchart-edge.selected` CSS highlight only appeared when the user actually dragged (which triggers `store.subscribe` → `render()`). A bare click left the canvas looking unchanged, and the panel's own `selectedNodeId` (used by the panel-scoped Delete/Backspace shortcut) stayed `null`, so Delete on a freshly-clicked node silently no-op'd. Wired `opts.onNodeClick(id)` end-to-end:
-  - `src/flowchart/flowchart-canvas.js` — added an `opts.onNodeClick` callback parallel to the existing `opts.onEdgeClick`; on click, both branches now call a new surgical `applySelectionHighlight()` that toggles the `.selected` class on the existing `<g data-node-id>` / `<line data-edge-id>` elements without going through `render()` (which would detach the very element the user's pointer is still on, breaking `pointermove`/`pointerup` bubbling during a drag).
-  - `src/sidebar/flowchart-panel.js` — the panel's `onNodeClick` handler mirrors the id into the panel's `selectedNodeId` (clearing `selectedEdgeId`) so Delete/Backspace routes correctly. Same symmetry was already in place for `onEdgeClick`.
-- **Flowchart Panel — narrow sidebar cramped the canvas + preview**: the panel lives in the 280 px sidebar, which split the canvas vs. preview to ~175 px each — too tight to edit a flowchart. Added a "Maximize / Restore" button to the panel toolbar (between the status text and the right edge). Clicking it toggles a `flowchart-takeover` class on `.main-content`:
-  - `src/styles-sidebar.css` — new `.main-content.flowchart-takeover` rules hide `.editor-container` (`display: none`) and let `.sidebar` / `.sidebar-panel` grow with `flex: 1` so the canvas + preview split the full window width instead of the 280 px sidebar.
-  - The button label flips between "Maximize" and "Restore", `aria-label` and `title` update, and the button gets an `.active` highlight while takeover is on. `destroy()` clears the class so leaving the panel doesn't leave the editor hidden for the rest of the session.
-  - The class lookup walks up from the panel container to the nearest `.main-content` ancestor (with a `document.querySelector('.main-content')` fallback) so the panel doesn't need to know whether the sidebar lives inside `#sidebar` or any future container.
-
-### Tests
-
-- `tests/flowchart-panel.test.js` — added two new `describe` blocks (8 tests total):
-  - "selection wiring (canvas click → panel state + SVG class)": clicking a node applies `.selected` to the matching `<g>`, clicking a second node moves `.selected` from the first to the second, clicking an edge applies `.selected` to the matching `<line>`, and a regression test verifying Delete removes a freshly-clicked node (was broken in v4.9.3 because the panel's `selectedNodeId` was never updated by canvas clicks).
-  - "maximize / takeover": the maximize button is exposed in the toolbar, clicking it toggles `.flowchart-takeover` on `.main-content` and flips the button label/active class, and `destroy()` clears the class so the editor stays usable.
-- New `mountWithMainContent()` helper wraps the panel container in a fake `.main-content` (mirroring the real DOM layout in `src/index.html:2341`) so the takeover's class-toggling is observable from the test.
-
-## Version 4.9.3 (2026-09-14)
-
-### Fixes
-
-- **Flowchart Panel — preview pane accumulated raw Mermaid source**: when the user fired several `addNode` mutations within the 250 ms preview debounce, `mermaid.run({ nodes: [div] })` is async, so the previous render's `<div class="mermaid">` (still carrying the source text) was sitting in `.flowchart-preview-render` when the next render cleared the target. The first render's eventual `element.innerHTML = svg` landed on a detached node, but the visible preview pane had a stack of stale `<div class="mermaid">` elements. Fixed in `src/renderer.js:2423-2449`: switched the inline `renderFlowChartMermaid` to `replaceChildren()` (more idiomatic than `innerHTML = ''`) and added a per-target `WeakSet` in-flight tracker that keeps the previous render's closure from racing the new render — its eventual `element.innerHTML = svg` is harmless on a detached node, and the new render always starts from a clean slate.
-
-### Tests
-
-- `tests/flowchart-panel.test.js` — added a second regression test (`preview-source pre never duplicates across debounced mutations even with in-flight mermaid.render`) that fires 7 mutations at 10 ms intervals (well inside the 250 ms debounce), uses a `renderMermaid` mock that mirrors the real mermaid.run closure (captures the input div, asynchronously sets `innerHTML = svg` on it regardless of DOM connection), and asserts the `<pre>` contains exactly one copy of the latest source and the render target holds exactly one `<div class="mermaid">` child whose first element child is the latest `<svg>`.
-
-## Version 4.9.2 (2026-09-14)
-
-### Fixes
-
-- **Standalone ASCII Art Generator — broken stylesheet path**: `src/ascii-generator.html:7` linked `<link rel="stylesheet" href="../fonts.css" />`. The HTML loads via `BrowserWindow.loadFile(path.join(__dirname, 'ascii-generator.html'))` where `__dirname` is `src/`, so `../fonts.css` escaped the `src/` directory and resolved to a non-existent `<project>/fonts.css`. Changed to `fonts.css` (same file, src/-relative — mirrors `src/index.html:29`). The window rendered without its font rules, leaving the header in the fallback system stack.
-- **Standalone ASCII Art Generator — dead Box/Templates UI**: the controller (`src/renderer/ascii-controller.js`) shipped three mode tabs (`Text Banner` / `Box-Frame` / `Templates`), 18 `.template-btn[data-template]` buttons, and a Box form (`#box-text` / `#box-style` / `#box-padding`) but wired none of them. Clicking any tab or button was a no-op. Wired all of them:
-  - `setMode(mode)` toggles `.active` on the right `.mode-tab` and the matching `.mode-section` (`text-mode` / `box-mode` / `templates-mode`).
-  - Template buttons call `api.generate({ text: '', font: 'template:<id>' })` so the orchestrator owns template content; preview updates and the button gets `.active`.
-  - Box mode renders the user text with a border using the chosen style (`single` / `double` / `rounded` / `bold` / `ascii`) and padding, exposed as a pure `window.ASCIIBoxRenderer.renderBox(text, style, padding)` helper.
-  - All 11 brief-required behaviours (text-input / font-picker / font-search / insert / copy / save / generate, last-font persistence, debounced preview) remain intact.
-
-### Tests
-
-- New `tests/ascii-controller.test.js` — 6 tests covering the stylesheet path (no `..` escape), pure box renderer (single + ascii styles), mode-tab switching (Box and Templates), and template button → preview wiring.
-
-## Version 4.9.1 (2026-09-14)
-
-### Fixes
-
-- **Flowchart Panel save failed**: `getUserDataPath()` IPC was not awaited in `src/renderer.js:2439-2449`, so the persistence path was computed as `"[object Promise]/flowchart-session.json"` and rejected by the `write-text-file` userData sandbox. Pre-resolved the path on panel register and cached it; persistence (read and write) now works correctly.
-
-## Version 4.9.0 (2026-09-14)
-
-### New: Visual Flow Chart Editor (Sidebar panel → "Flow Chart")
-
-- Pure `flowchart-store.js` — graph data store with bounded undo/redo (depth 50)
-  and injectable persistence IO (testable without touching the filesystem)
-- 5 node shapes (process, decision, terminator, subroutine, document) × 3 edge
-  kinds (solid, dotted, thick) with full keyboard accessibility
-- Hand-rolled SVG canvas: drag nodes, double-click to edit labels, Alt+drag from
-  a node edge to wire connections, in-place label editing, delete + backspace
-  to remove the selection
-- `flowchart-shapes.js` — pure SVG path templates (no DOM, fully unit-tested)
-- `flowchart-mermaid.js` — translates the graph to Mermaid `flowchart TD` source
-  that renders identically in the preview pane
-- Sidebar panel `src/sidebar/flowchart-panel.js` with debounced preview (250 ms),
-  debounced persistence (500 ms), and Ctrl+Z / Ctrl+Shift+Z / Delete / Backspace
-  shortcuts
-- 3 thin IPC channels (`get-user-data-path`, `read-text-file`, `write-text-file`)
-  sandboxed to `app.getPath('userData')` via path validation
-- Auto-save to `<userData>/flowchart-session.json`; restores on reopen
-- Rail button in the sidebar; toggle the panel with `Ctrl+Alt+F`
-- Insert-at-Cursor wraps the generated Mermaid in a fenced ` ```mermaid ` block
-  at the current cursor position in the active editor tab
-- 73 new tests
-
-### New: ASCII Art Generator upgrade
-
-- Pure `AsciiArt` orchestrator (`generate / listFonts / getFontMeta`) unifying
-  hand-coded fonts + figlet + 19 named templates behind one API
-- 17 hand-coded font tables extracted from inline renderer code (5 existing +
-  12 new: Big, Small, Lean, Slant, Isometric1-4, 3-D, 3x5, ANSI Shadow, Calvin S)
-- 19 named ASCII templates (arrows, flowcharts, banners, frames)
-- `figlet@^1.8.0` dep with lazy-load + cache adapter (≥328 bundled fonts; pure
-  JS, no native bindings)
-- 6 IPC handlers: `ascii:generate / list-fonts / get-font-meta / save / copy /
-last-font`
-- Standalone window rewrite: removed the ~385-line inline script; added a
-  searchable font picker, Copy to Clipboard, and Save to File
-- Major cleanup: -1029 net lines of dead code (the in-app modal
-  `#ascii-art-dialog`, the 800-line renderer controller, the
-  `show-ascii-generator*` preload channels, and the obsolete
-  `textToASCII`/`createASCIIBox`/etc. helpers)
-- 97 new tests
-
-### New: Editor Theme Registry (extension)
-
-- 12 new themes added: Catppuccin Latte / Frappé / Macchiato / Mocha, One Light,
-  Tokyo Night Storm, Synthwave '84, Outrun, Winter is Coming (Light + Dark),
-  Solarized Dark High Contrast, Spring Light
-- Total: 37 themes (15 light + 22 dark incl. 1 high-contrast), sorted into
-  Light / Dark / High-Contrast tables in the README
-- Pure `ThemeRegistry` module; the View menu generator now reads
-  `list() + categories()`; new per-theme CSS files live at
-  `src/styles/themes/<id>.css`
-- `<link disabled>` preload + `<link>` toggle pattern (sub-millisecond theme
-  switch — no flash, no re-fetch)
-- Aria-friendly: the high-contrast option is announced to assistive tech
-
-### Bug fixes
-
-- Plan 3: rail button tooltip `Ctrl+Alt+F` now actually wired (the shortcut
-  existed but the panel toggle was missing)
-- Plan 3: `destroy()` cleanup on panel unmount — timers, listeners, and the
-  store subscription are all released (no leaks when toggling repeatedly)
-- Plan 2: standalone window `<script src>` path corrected (was escaping `src/`)
-- Plan 2: font substitutions reverted — `Isometric1-4` and `Calvin S` are
-  actually restored from figlet's bundled fonts
-
-### Housekeeping
-
-- 1093 tests passing across 36 snapshots in 90 suites
-- Lint + Prettier clean across all 3 plans
-- Linux build verified end-to-end (AppImage + deb + snap produced)
-
----
-
-## Version 4.7.1 (2026-09-05)
-
-### New: Export Themes (Word + PDF)
-
-- Theme picker in the export dialog (basic and advanced mode) for PDF and DOCX:
-  **Default (Pandoc), Modern, Classic, Sepia, Minimal, Elegant**
-- PDF: LaTeX header recolors/reformats headings + links (xcolor/titlesec,
-  core-TeX packages only); DOCX: styles.xml surgery recolors Heading1-6/Title/
-  Subtitle/Hyperlink and swaps heading/body fonts
-- Themes persist in export presets; unknown ids in old presets fall back to
-  Default instead of failing the export
-
-### Branding
-
-- New M↓ brand identity: app icons, favicons, tray icon, welcome mark,
-  README wordmark (vector kit in assets/markdown-converter-assets/)
-
-### Fixes
-
-- **Windows**: pdfjs text/image extraction failed on Windows —
-  standardFontDataUrl is now a proper file:// URL (raw backslash paths
-  failed pdfjs's trailing-slash URL validation)
-- **Windows**: sharp temp-file cleanup (EPERM retry), path-separator test
-  assertions, and pdfjs test timeouts fixed — the Windows CI job is green
-- FiraCode tooling downloads pinned to the immutable 6.2 release;
-  .gitattributes stops CRLF checkout rewriting hash-pinned files
-- macOS pandoc extractor locates the binary in the archive (layout changed)
-- Packaged apps resolve bundled pandoc/markitdown next to the executable
-  (resourcesPath lookup was wrong since 4.5 — packaged builds silently used
-  system pandoc)
-
----
-
-## Version 4.7.0 (2026-09-05)
-
-### Bundling & Legal Compliance
-
-- **MarkItDown is now bundled**: `npm run bundle:markitdown` freezes Microsoft's
-  markitdown (MIT) + embedded Python runtime into a single ~75MB per-platform
-  binary (`bin/<platform>/markitdown`) via PyInstaller (ML extras excluded);
-  the app prefers the bundled binary and falls back to system installs
-- Packaging copies the bundled markitdown for Windows/macOS/Linux alongside Pandoc
-- **THIRD-PARTY-NOTICES.md** — full license inventory of everything distributed
-  (bundled binaries, npm runtime deps, fonts, embedded Python packages)
-- **SOURCES.md** — GPL §3(b) written source offer for Pandoc / FFmpeg (GPL build) /
-  PyInstaller bootloader, with pinned versions + SHA-256; LGPL relinking note for libvips
-- **third-party-licenses/** — canonical texts: GPL-2.0, LGPL-2.1, MPL-2.0,
-  Apache-2.0, OFL-1.1, PSF-Python
-- **Help → Third-Party Notices & Licenses** — in-app viewer for both documents
-- **download-tools.js** now SHA-256 pins and verifies every downloaded artifact
-  (post-download and against the cache on every run; hard-fails on mismatch)
-- README gains a "Bundled Dependencies, Legal Notices & Credits" section
-- Large optional tools intentionally NOT bundled (documented): LibreOffice,
-  MiKTeX/TeX Live, ImageMagick, PlantUML+JRE, Calibre
-
----
-
-## Version 4.6.1 (2026-09-05)
-
-### New Features
-
-- **MarkItDown import** — "File → Import with MarkItDown (Any Format)…" embeds
-  Microsoft's [markitdown](https://github.com/microsoft/markitdown) (MIT) as an
-  any-file → Markdown path: PDF, DOCX, PPTX, XLSX, Outlook .msg/.eml, EPUB,
-  images, CSV/JSON/XML, ZIP; audio transcription and OCR with the `[all]` extras
-  - Command auto-resolution: `markitdown` binary, then `python -m markitdown` /
-    `python3 -m markitdown` (probed once, cached)
-  - Same SEC-1 argv discipline as Pandoc (execFile only, paths never through a shell),
-    50MB input cap, 120s timeout, path-sanitized errors that surface markitdown's
-    actionable `pip install 'markitdown[...]'` hints
-  - Output written next to the source as `<name>.md` (numeric suffix instead of
-    overwriting) and opened in a new tab; `markitdown:available` / `markitdown:convert`
-    IPC for future renderer flows
-- **AI Assistant: Anthropic-compatible provider** — any base URL speaking the
-  Anthropic messages schema (LiteLLM proxies, Bedrock gateways, local servers);
-  x-api-key + Bearer auth, keyless proxies supported, tolerates bases with or
-  without a trailing `/v1`
-
-### Bug Fixes
-
-- File → Open PDF crashed the PDF editor (null operation matched no section; now
-  defaults to Merge)
-- Backlinks panel required the wrong module path (failed at registration)
-- writing-studio engines/panels now await their IPC-backed settings/file backends
-  (eliminates `JSON.parse("[object Promise]")` crashes)
-- Manuscript panel's window.prompt (unsupported in Electron) replaced with an
-  inline dialog; collaboration comment store made async to match its IO
-
----
-
-## Version 4.6.0 (2026-09-05)
-
-### New Features
-
-#### AI Assistant Plugin (multi-provider)
-
-- Chat sidebar panel with rolling conversation history and insert-reply-into-document
-- Providers: OpenAI, Anthropic, Ollama, LM Studio, and any OpenAI-compatible endpoint
-- All provider traffic proxied through the main process — API keys never enter the renderer and the CSP stays closed to AI endpoints
-- Commands: AI Summarize / Improve / Explain / Translate selection
-- Answers the writing-studio `ai:analyze` contract, finally enabling the Proofread panel
-
-#### Collaboration Plugin (inline comments)
-
-- Anchor-based comments stored in `.comments/` sidecar files (never exported, never committed)
-- Comments sidebar panel: add at cursor, list, resolve, delete, jump to anchor
-- Drift detection flags moved/edited anchors; F8 navigates to the next open comment
-
-#### Local Knowledge Base (wiki-links + backlinks)
-
-- `[[Note]]`, `[[Note|alias]]`, `[[Note#section]]` render as links in the preview (code blocks excluded)
-- Clicking a wiki-link opens the note or offers to create it
-- Backlinks sidebar panel scans the folder (bounded BFS) for documents linking to the current one
-
-#### Crash Recovery / Session Restore
-
-- Open tabs (paths + unsaved buffer content) snapshotted to localStorage, debounced on edits, on tab changes, on unload, and once a minute
-- Restore prompt on launch with per-tab restore, clean-fresh option, and 2MB content budget
-
-#### Document Version History
-
-- Every save snapshots the previous on-disk content to `<userData>/versions/`
-- History sidebar panel: list, restore (with safety snapshot), unified diff vs. current, delete, manual "save version now"
-- Per-document pruning (20 versions), path-hash storage, id-validated reads
-
-#### Editor
-
-- Vim keybindings (View → Vim Mode, persisted, live toggle via CodeMirror Compartment)
-- Snippet Tab-expansion: type a snippet name and press Tab to insert it
-- Zen Mode word-goal setter (the HUD progress bar finally has UI)
-
-#### Export / Conversion
-
-- **Real PDF encryption**: pdf-lib swapped for @cantoo/pdf-lib — encrypt/decrypt/permissions now actually work (UI auto-enables via the capability probe)
-- **XLSX export**: markdown tables → native Excel workbook, one sheet per table (no Pandoc needed)
-- **ODT headers/footers + page size**: real ODF styles.xml patching replaces the empty stub
-- **Local PlantUML rendering**: diagrams render on-machine via the `plantuml` CLI when installed; plantuml.com stays as fallback
-- **KaTeX bundled locally** (CSS + fonts): math renders offline, no CDN calls
-- Writing heatmap (GitHub-style 30-day grid) in the writing-studio Goals panel
-
-#### Platform
-
-- Quick Note global scratchpad (Ctrl+Alt+Q, works when unfocused; appends to `notes/quick-notes.md`)
-- Deep link protocol `markdownconverter://open?path=…`
-- REPL confirmation dialog before first code execution per language per session (unsandboxed-execution guard rail)
-- Writing-studio's four sidebar panels (Manuscript/Goals/Snapshots/Proofread) are now actually wired with rail icons
-- Plugin sidebar panels get automatic rail icons via `registerPanel({icon})`
-
-### Bug Fixes
-
-- `Ctrl+Shift+P` collision: PDF (Enhanced) export now `Ctrl+Alt+Shift+P`; Command Palette keeps `Ctrl+Shift+P`
-- Universal Converter's Pandoc tool no longer always reports "not installed" (`checkConverterAvailable` gained a pandoc case with bundled-binary check)
-- CLI headless export: removed dangling `--css` / `--reference-doc` flags that made pandoc exit with an error; `--self-contained` replaced with `--standalone` (Pandoc 3.x)
-- Removed dead "Open Export Options Dialog…" button from the converter dialog
-- Removed duplicate `styles-zen.css` include
-
-### Security
-
-- AI provider requests carry size caps (200KB prompt), timeouts (120s), and user-safe error surfaces
-- Version-history reads validate ids against traversal; history listing requires a valid document path
-- PlantUML local rendering removes the diagram-text exfiltration path when a local CLI exists (CVE-MC-007 follow-up)
-
-### Tests
-
-- New suites: OdtStyling, AiProviders, ai-assistant prompts, collaboration comment-store, wiki-links/backlinks, session-store, XlsxExporter, VersionHistory
-- PDFOperations encryption tests rewritten for the real-encryption reality
-
----
-
 ## Version 4.0.0 (2026-03-04)
 
 ### Major Changes
-
 - **CodeMirror 6 Editor** — Replaced textarea with CodeMirror 6 featuring syntax highlighting, code folding, bracket matching, multiple cursors, and auto-indent
 - **Sidebar Panel System** — Collapsible sidebar with File Explorer, Git, Snippets, and Templates panels
 - **Command Palette** — Ctrl+Shift+P to search and execute all app actions
 - **Code Execution (REPL)** — Run JavaScript, Python, and Bash code blocks directly from the preview
 
 ### New Features
-
 - Print Preview dialog with paper size, orientation, margins, scale, and page range controls
 - Image paste from clipboard and drag-drop support with auto-save to assets folder
 - Document templates library (10 templates: blog post, meeting notes, tech spec, changelog, README, project plan, API docs, tutorial, release notes, comparison)
@@ -434,7 +21,6 @@ last-font`
 - Breadcrumb bar showing current file path
 
 ### New Export/Import Formats
-
 - Reveal.js slides (.html)
 - Beamer slides (.pdf)
 - Confluence/Jira wiki markup (.txt)
@@ -442,14 +28,12 @@ last-font`
 - Developer formats: JSON, YAML, XML, TOML
 
 ### Security
-
 - Content Security Policy (CSP) meta tag
 - File size validation (50MB limit)
 - Error message sanitization (stripped file paths)
 - Conversion rate limiting (2-second debounce)
 
 ### Dependencies Updated
-
 - marked: 16.x to 17.x (with marked-highlight extension)
 - pdfjs-dist: 3.x to 5.x (new worker model)
 - html2pdf.js: 0.10 to 0.14
@@ -457,12 +41,10 @@ last-font`
 - dompurify, docx, and others updated to latest
 
 ### Testing
-
 - 80 tests across 7 test suites
 - New tests for sidebar manager, command palette, print preview, markdown extensions, and utility functions
 
 ### Breaking Changes
-
 - Editor is now CodeMirror 6 (replaces textarea)
 - marked API changed to use marked.use() instead of marked.setOptions()
 - pdfjs-dist upgraded to v5 with new worker model
@@ -474,7 +56,6 @@ last-font`
 ### 🎨 UI/UX Improvements
 
 #### Subtle & Small Preview Popout Button
-
 - Redesigned popout button with minimalist aesthetic
 - Removed border for cleaner appearance
 - Reduced size: 11px font, 2px×6px padding (previously 14px font, 4px×8px padding)
@@ -483,7 +64,6 @@ last-font`
 - **File**: `src/styles.css:195-211`
 
 #### Simplified Table Headers in Preview
-
 - Removed gradient background from table headers in modern theme
 - Changed from `var(--primary-gradient)` (purple gradient) to simple light gray (#f0f0f0)
 - Updated text color to dark (#333333) for better readability
@@ -493,11 +73,9 @@ last-font`
 ### 📥 Enhanced Import Capabilities
 
 #### Comprehensive Format-to-Markdown Conversion
-
 Dramatically expanded the "Import Document" feature to support 30+ file formats:
 
 **Supported Formats:**
-
 - **Documents**: DOCX, ODT, RTF, HTML, HTM, TEX, EPUB, PDF, TXT
 - **Presentations**: PPTX, ODP
 - **Markup Languages**: RST, Textile, MediaWiki, Org-mode, AsciiDoc, TWiki, OPML
@@ -508,7 +86,6 @@ Dramatically expanded the "Import Document" feature to support 30+ file formats:
 - **Data Formats**: CSV, TSV, JSON
 
 **Format-Specific Optimizations:**
-
 - PDF text extraction with XeLaTeX engine
 - CSV/TSV automatic table conversion
 - JSON structure handling
@@ -520,7 +97,6 @@ Dramatically expanded the "Import Document" feature to support 30+ file formats:
 ### 🎨 Exhaustive ASCII Art Generator
 
 #### 5 New Text Banner Styles
-
 Complete alphabet (A-Z) and numbers (0-9) support for all styles:
 
 1. **Standard** - Classic ASCII art with slashes and underscores
@@ -532,18 +108,15 @@ Complete alphabet (A-Z) and numbers (0-9) support for all styles:
 **File**: `src/renderer.js:3397-3537`
 
 #### 19 Professional ASCII Templates
-
 Organized into 4 categories with expanded options:
 
 **Arrows & Flow (4 templates):**
-
 - Arrow Right - Horizontal flow indicators
 - Arrow Down - Vertical flow indicators
 - Decision - Binary decision diagrams
 - Process Flow - Multi-step process visualization
 
 **Diagrams & Charts (6 templates):**
-
 - Flowchart - Advanced flowchart with decision branches and loops
 - Sequence - Sequence diagrams for User-System-Database interactions
 - Network - Server-client network topology
@@ -552,14 +125,12 @@ Organized into 4 categories with expanded options:
 - Table Simple - Basic table template with borders
 
 **Boxes & Containers (4 templates):**
-
 - Header - Section header with decorative borders
 - Note Box - Important notes with rounded corners (┏━━┓)
 - Warning Box - Warning messages with bold borders (╔═══╗)
 - Info Box - Information boxes with subtle styling (╭───╮)
 
 **Decorative Elements (6 templates):**
-
 - Divider - Horizontal section separator (═══)
 - Separator Fancy - Elegant rounded divider
 - Brackets - Japanese-style brackets 【 】
@@ -568,7 +139,6 @@ Organized into 4 categories with expanded options:
 - Progress Bar - Visual progress indicators
 
 **Features:**
-
 - All ASCII art automatically wrapped in code blocks for proper rendering
 - Preserved formatting in markdown preview and all export formats
 - Categorized template selection interface
@@ -598,7 +168,6 @@ Organized into 4 categories with expanded options:
 ## Version 2.0.0 (Previous Release)
 
 ### Major Features
-
 - Export Profiles - Save and reuse export configurations
 - Mermaid.js diagram support
 - Command Palette (Ctrl+Shift+P)
@@ -613,7 +182,6 @@ Organized into 4 categories with expanded options:
 - 22 beautiful themes
 
 ### Core Capabilities
-
 - Cross-platform markdown editor with live preview
 - Universal document conversion (30+ formats)
 - PDF Editor (merge, split, compress, rotate, watermark, encrypt)
@@ -627,16 +195,13 @@ Organized into 4 categories with expanded options:
 ## Installation & Usage
 
 ### Prerequisites
-
 - **Pandoc** - Required for document conversion
 - **Optional**: LibreOffice, ImageMagick, FFmpeg for universal converter
 
 ### Download
-
 Get the latest release from: https://github.com/amitwh/pan-converter/releases
 
 ### Supported Platforms
-
 - Windows (x64)
 - Linux (AppImage, .deb, .snap)
 - macOS (planned)

assets/fonts/FiraCode-LICENSE.txt

@@ -1,93 +0,0 @@
-Copyright (c) 2014, The Fira Code Project Authors (https://github.com/tonsky/FiraCode)
-
-This Font Software is licensed under the SIL Open Font License, Version 1.1.
-This license is copied below, and is also available with a FAQ at:
-http://scripts.sil.org/OFL
-
-
------------------------------------------------------------
-SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
------------------------------------------------------------
-
-PREAMBLE
-The goals of the Open Font License (OFL) are to stimulate worldwide
-development of collaborative font projects, to support the font creation
-efforts of academic and linguistic communities, and to provide a free and
-open framework in which fonts may be shared and improved in partnership
-with others.
-
-The OFL allows the licensed fonts to be used, studied, modified and
-redistributed freely as long as they are not sold by themselves. The
-fonts, including any derivative works, can be bundled, embedded,
-redistributed and/or sold with any software provided that any reserved
-names are not used by derivative works. The fonts and derivatives,
-however, cannot be released under any other type of license. The
-requirement for fonts to remain under this license does not apply
-to any document created using the fonts or their derivatives.
-
-DEFINITIONS
-"Font Software" refers to the set of files released by the Copyright
-Holder(s) under this license and clearly marked as such. This may
-include source files, build scripts and documentation.
-
-"Reserved Font Name" refers to any names specified as such after the
-copyright statement(s).
-
-"Original Version" refers to the collection of Font Software components as
-distributed by the Copyright Holder(s).
-
-"Modified Version" refers to any derivative made by adding to, deleting,
-or substituting -- in part or in whole -- any of the components of the
-Original Version, by changing formats or by porting the Font Software to a
-new environment.
-
-"Author" refers to any designer, engineer, programmer, technical
-writer or other person who contributed to the Font Software.
-
-PERMISSION & CONDITIONS
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of the Font Software, to use, study, copy, merge, embed, modify,
-redistribute, and sell modified and unmodified copies of the Font
-Software, subject to the following conditions:
-
-1) Neither the Font Software nor any of its individual components,
-in Original or Modified Versions, may be sold by itself.
-
-2) Original or Modified Versions of the Font Software may be bundled,
-redistributed and/or sold with any software, provided that each copy
-contains the above copyright notice and this license. These can be
-included either as stand-alone text files, human-readable headers or
-in the appropriate machine-readable metadata fields within text or
-binary files as long as those fields can be easily viewed by the user.
-
-3) No Modified Version of the Font Software may use the Reserved Font
-Name(s) unless explicit written permission is granted by the corresponding
-Copyright Holder. This restriction only applies to the primary font name as
-presented to the users.
-
-4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
-Software shall not be used to promote, endorse or advertise any
-Modified Version, except to acknowledge the contribution(s) of the
-Copyright Holder(s) and the Author(s) or with their explicit written
-permission.
-
-5) The Font Software, modified or unmodified, in part or in whole,
-must be distributed entirely under this license, and must not be
-distributed under any other license. The requirement for fonts to
-remain under this license does not apply to any document created
-using the Font Software.
-
-TERMINATION
-This license becomes null and void if any of the above conditions are
-not met.
-
-DISCLAIMER
-THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
-OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
-COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
-DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
-OTHER DEALINGS IN THE FONT SOFTWARE.

assets/fonts/JetBrainsMono-LICENSE.txt

@@ -1,93 +0,0 @@
-Copyright 2020 The JetBrains Mono Project Authors (https://github.com/JetBrains/JetBrainsMono)
-
-This Font Software is licensed under the SIL Open Font License, Version 1.1.
-This license is copied below, and is also available with a FAQ at:
-https://scripts.sil.org/OFL
-
-
------------------------------------------------------------
-SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
------------------------------------------------------------
-
-PREAMBLE
-The goals of the Open Font License (OFL) are to stimulate worldwide
-development of collaborative font projects, to support the font creation
-efforts of academic and linguistic communities, and to provide a free and
-open framework in which fonts may be shared and improved in partnership
-with others.
-
-The OFL allows the licensed fonts to be used, studied, modified and
-redistributed freely as long as they are not sold by themselves. The
-fonts, including any derivative works, can be bundled, embedded, 
-redistributed and/or sold with any software provided that any reserved
-names are not used by derivative works. The fonts and derivatives,
-however, cannot be released under any other type of license. The
-requirement for fonts to remain under this license does not apply
-to any document created using the fonts or their derivatives.
-
-DEFINITIONS
-"Font Software" refers to the set of files released by the Copyright
-Holder(s) under this license and clearly marked as such. This may
-include source files, build scripts and documentation.
-
-"Reserved Font Name" refers to any names specified as such after the
-copyright statement(s).
-
-"Original Version" refers to the collection of Font Software components as
-distributed by the Copyright Holder(s).
-
-"Modified Version" refers to any derivative made by adding to, deleting,
-or substituting -- in part or in whole -- any of the components of the
-Original Version, by changing formats or by porting the Font Software to a
-new environment.
-
-"Author" refers to any designer, engineer, programmer, technical
-writer or other person who contributed to the Font Software.
-
-PERMISSION & CONDITIONS
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of the Font Software, to use, study, copy, merge, embed, modify,
-redistribute, and sell modified and unmodified copies of the Font
-Software, subject to the following conditions:
-
-1) Neither the Font Software nor any of its individual components,
-in Original or Modified Versions, may be sold by itself.
-
-2) Original or Modified Versions of the Font Software may be bundled,
-redistributed and/or sold with any software, provided that each copy
-contains the above copyright notice and this license. These can be
-included either as stand-alone text files, human-readable headers or
-in the appropriate machine-readable metadata fields within text or
-binary files as long as those fields can be easily viewed by the user.
-
-3) No Modified Version of the Font Software may use the Reserved Font
-Name(s) unless explicit written permission is granted by the corresponding
-Copyright Holder. This restriction only applies to the primary font name as
-presented to the users.
-
-4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
-Software shall not be used to promote, endorse or advertise any
-Modified Version, except to acknowledge the contribution(s) of the
-Copyright Holder(s) and the Author(s) or with their explicit written
-permission.
-
-5) The Font Software, modified or unmodified, in part or in whole,
-must be distributed entirely under this license, and must not be
-distributed under any other license. The requirement for fonts to
-remain under this license does not apply to any document created
-using the Font Software.
-
-TERMINATION
-This license becomes null and void if any of the above conditions are
-not met.
-
-DISCLAIMER
-THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
-OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
-COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
-DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
-OTHER DEALINGS IN THE FONT SOFTWARE.

assets/markdown-converter-assets/README.md

@@ -1,95 +0,0 @@
-# Markdown Converter — Brand Assets
-
-Visual identity for [markdown-converter](https://github.com/amitwh/markdown-converter): a cross-platform Markdown editor & document converter powered by Pandoc.
-
-## Concept
-
-The mark is a stylized **M** whose right descender becomes a downward chevron — a literal "**M↓**" for **Markdown**, suggesting the source document flowing downward into rendered output (PDF, DOCX, PPTX, …).
-
-The palette is a vibrant orange-to-deep-orange gradient (`#FB923C → #C2410C`) on a white mark — warm, energetic, distinctive. The mark itself is **white** on light surfaces, and a luminous peach-to-orange gradient (`#FFEDD5 → #FB923C`) on dark surfaces.
-
-## Files
-
-### App icon (vector, primary)
-
-These are **true SVG app icons** — clean vector paths, no rasters. Drop them straight into a macOS/Windows/Linux app bundle, a PWA manifest, an iOS asset catalog, an Electron build, or any HTML page.
-
-| File | Use it for |
-| --- | --- |
-| `app-icon.svg` | **Primary app icon.** Emerald→teal vertical gradient, subtle white highlight upper-left, white M↓ mark. |
-| `app-icon-dark.svg` | **Dark-mode app icon.** Charcoal gradient background, soft teal radial glow upper-left, mint-to-emerald gradient on the M↓ mark. |
-| `app-icon-flat.svg` | **Flat solid variant.** Single emerald background, white M↓ mark. Use when you can't render gradients (print, stickers, single-color contexts). |
-
-### Logo (wordmark)
-
-| File | Use it for |
-| --- | --- |
-| `logo-horizontal.jpg` (2752×1536) | High-res raster master. README hero, press kit. |
-| `logo-horizontal-1600w.jpg` (1600×893) | Web-ready compressed version. |
-| `logo-horizontal.svg` | Vector wordmark. Use in HTML, CSS, anywhere that needs to scale. |
-
-### Vector mark (for code & inline use)
-
-| File | Use it for |
-| --- | --- |
-| `mark.svg` | Gradient SVG mark. Drop into HTML, use as a UI element, or rasterize at any size. |
-| `mark-mono.svg` | Monochrome SVG. Uses `currentColor` — style it from CSS (`color: white;`) for any single-color context. |
-| `mark-standalone.jpg` (2048×2048) | Raster M↓ on white, for places that need a PNG (GitHub avatar, doc thumbnails). |
-
-### Favicons (rasterized from `app-icon.svg`)
-
-In the `favicons/` directory:
-
-| File | Use it for |
-| --- | --- |
-| `favicon.ico` | Legacy `.ico` (16/32/48/64 embedded). Drop at the site root. |
-| `favicon-16x16.png`, `favicon-32x32.png`, `favicon-48x48.png` | Standard browser favicons. |
-| `apple-touch-icon.png` (180×180) | iOS home screen & "Add to Home Screen". |
-| `icon-192.png`, `icon-512.png` | Android home screen, PWA manifest, web app. |
-
-### Social preview
-
-| File | Use it for |
-| --- | --- |
-| `og-social-preview-1200x630.jpg` | **GitHub social preview** — set as the repository's social card image (Settings → Social preview). Also works as Open Graph / Twitter Card. |
-
-## Usage in the repo
-
-Drop the vector icons + favicon set into the repo root or a `/brand` folder, then in `README.md`:
-
-```markdown
-<p align="left">
-  <img src="./brand/app-icon.svg" width="80" alt="Markdown Converter">
-</p>
-```
-
-For the favicon, in `index.html` (or any HTML site):
-
-```html
-<link rel="icon" type="image/x-icon" href="/favicon.ico">
-<link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png">
-<link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png">
-```
-
-For an Electron app, point `build.icon` at the SVG (or a 512×512 PNG export):
-
-```json
-{
-  "build": {
-    "icon": "brand/icon-512.png"
-  }
-}
-```
-
-## Color tokens
-
-```
---mc-orange-400: #FB923C   /* gradient start (light) */
---mc-orange-700: #C2410C   /* gradient end   (light) */
---mc-orange-500: #F97316   /* flat / accent        */
---mc-peach-100:  #FFEDD5   /* dark-mode mark start */
---mc-orange-300: #FDBA74   /* dark-mode mark mid   */
---mc-ink-900:    #0F172A   /* primary text         */
---mc-ink-500:    #475569   /* secondary text       */
---mc-ink-400:    #94A3B8   /* tagline / muted      */
-```

assets/markdown-converter-assets/app-icon-dark.svg

@@ -1,27 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1024 1024" role="img" aria-label="Markdown Converter app icon (dark)">
-  <title>Markdown Converter (dark)</title>
-  <defs>
-    <linearGradient id="darkBg" x1="0" y1="0" x2="0" y2="1024" gradientUnits="userSpaceOnUse">
-      <stop offset="0%" stop-color="#1C1917"/>
-      <stop offset="100%" stop-color="#0C0A09"/>
-    </linearGradient>
-    <radialGradient id="darkGlow" cx="280" cy="180" r="780" gradientUnits="userSpaceOnUse">
-      <stop offset="0%" stop-color="#EA580C" stop-opacity="0.65"/>
-      <stop offset="60%" stop-color="#9A3412" stop-opacity="0.15"/>
-      <stop offset="100%" stop-color="#9A3412" stop-opacity="0"/>
-    </radialGradient>
-    <linearGradient id="darkMark" x1="0" y1="180" x2="0" y2="844" gradientUnits="userSpaceOnUse">
-      <stop offset="0%" stop-color="#FFEDD5"/>
-      <stop offset="100%" stop-color="#FB923C"/>
-    </linearGradient>
-  </defs>
-  <rect width="1024" height="1024" rx="224" ry="224" fill="url(#darkBg)"/>
-  <rect width="1024" height="1024" rx="224" ry="224" fill="url(#darkGlow)"/>
-  <g transform="translate(154, 176) scale(7.16)" fill="none" stroke="url(#darkMark)" stroke-width="9" stroke-linecap="round" stroke-linejoin="round">
-    <line x1="26" y1="22" x2="26" y2="72"/>
-    <line x1="63" y1="22" x2="63" y2="75"/>
-    <polyline points="22,18 44.5,56 67,18"/>
-    <polyline points="48,60 63,76 78,60"/>
-  </g>
-</svg>

assets/markdown-converter-assets/app-icon-flat.svg

@@ -1,11 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1024 1024" role="img" aria-label="Markdown Converter app icon (flat)">
-  <title>Markdown Converter (flat)</title>
-  <rect width="1024" height="1024" rx="224" ry="224" fill="#F97316"/>
-  <g transform="translate(154, 176) scale(7.16)" fill="none" stroke="#FFFFFF" stroke-width="9" stroke-linecap="round" stroke-linejoin="round">
-    <line x1="26" y1="22" x2="26" y2="72"/>
-    <line x1="63" y1="22" x2="63" y2="75"/>
-    <polyline points="22,18 44.5,56 67,18"/>
-    <polyline points="48,60 63,76 78,60"/>
-  </g>
-</svg>

assets/markdown-converter-assets/app-icon.svg

@@ -1,22 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1024 1024" role="img" aria-label="Markdown Converter app icon">
-  <title>Markdown Converter</title>
-  <defs>
-    <linearGradient id="iconBg" x1="0" y1="0" x2="0" y2="1">
-      <stop offset="0%" stop-color="#FB923C"/>
-      <stop offset="100%" stop-color="#C2410C"/>
-    </linearGradient>
-    <radialGradient id="iconHighlight" cx="0.28" cy="0.18" r="0.55">
-      <stop offset="0%" stop-color="#FFFFFF" stop-opacity="0.28"/>
-      <stop offset="60%" stop-color="#FFFFFF" stop-opacity="0"/>
-    </radialGradient>
-  </defs>
-  <rect width="1024" height="1024" rx="224" ry="224" fill="url(#iconBg)"/>
-  <rect width="1024" height="1024" rx="224" ry="224" fill="url(#iconHighlight)"/>
-  <g transform="translate(154, 176) scale(7.16)" fill="none" stroke="#FFFFFF" stroke-width="9" stroke-linecap="round" stroke-linejoin="round">
-    <line x1="26" y1="22" x2="26" y2="72"/>
-    <line x1="63" y1="22" x2="63" y2="75"/>
-    <polyline points="22,18 44.5,56 67,18"/>
-    <polyline points="48,60 63,76 78,60"/>
-  </g>
-</svg>