feat(export): themable PDF/Word exports; Windows CI green (v4.7.1)

Export themes:
- Six presets in the export dialog (basic + advanced modes) for PDF/DOCX:
  Default, Modern, Classic, Sepia, Minimal, Elegant
- PDF: LaTeX header (xcolor/titlesec) recolors headings, adds section
  rules and colored links — core-TeX packages only, hex-literal only
  (no injection surface)
- DOCX: styles.xml surgery recolors Heading1-6/Title/Subtitle/Hyperlink
  and swaps heading/body fonts; verified end-to-end against a real
  pandoc-produced docx
- Themes ride along in export presets (unknown ids fall back to Default)

Windows CI fixes:
- pdfjs standardFontDataUrl now a file:// URL (backslash paths failed
  pdfjs's trailing-slash validation, breaking extractText/extractImages)
- sharp temp cleanup EPERM retries; path-separator assertions; pdfjs
  test timeouts raised; batch suite testTimeout 30s

648/648 tests green; 4.7.1 linux+win artifacts rebuilt.

.gitattributes

@@ -0,0 +1,9 @@
+# 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/ci.yml

@@ -0,0 +1,28 @@
+name: CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  test:
+    runs-on: ubuntu-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: Run tests
+        run: npm test
+
+      - name: Run linter
+        run: npm run lint

.github/workflows/release.yml

@@ -0,0 +1,178 @@
+name: Release
+
+on:
+  push:
+    tags: ['v*']
+
+permissions:
+  contents: write
+
+jobs:
+  build-linux:
+    runs-on: ubuntu-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)
+        # 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
+
+      - name: Build Linux packages
+        run: npm run build:linux-ci -- --publish=never
+
+      - name: Upload Linux artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: linux-artifacts
+          path: |
+            dist/*.deb
+            dist/*.AppImage
+            dist/*.snap
+            dist/*.rpm
+          retention-days: 5
+
+  build-windows:
+    runs-on: windows-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)
+        # Windows runners ship python + venv; non-fatal on failure — the
+        # package then omits the bundled binary by design
+        run: npm run bundle:markitdown
+        continue-on-error: true
+
+      - name: Run tests
+        run: npm test
+
+      - name: Decode certificate (if available)
+        if: ${{ env.CSC_LINK_BASE64 != '' }}
+        shell: pwsh
+        env:
+          CSC_LINK_BASE64: ${{ secrets.CSC_LINK_BASE64 }}
+        run: |
+          $bytes = [Convert]::FromBase64String("$env:CSC_LINK_BASE64")
+          [IO.File]::WriteAllBytes("${{ github.workspace }}\code-signing-cert.pfx", $bytes)
+          echo "CERT_AVAILABLE=true" >> $env:GITHUB_ENV
+
+      - name: Build Windows packages (signed)
+        if: ${{ env.CERT_AVAILABLE == 'true' }}
+        env:
+          CSC_LINK: code-signing-cert.pfx
+          CSC_KEY_PASSWORD: ${{ secrets.CSC_KEY_PASSWORD }}
+        run: npm run build:win-signed -- --publish=never
+
+      - name: Build Windows packages (unsigned)
+        if: ${{ env.CERT_AVAILABLE != 'true' }}
+        env:
+          CSC_IDENTITY_AUTO_DISCOVERY: 'false'
+        run: npm run build:win-unsigned -- --publish=never
+
+      - name: Upload Windows artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: windows-artifacts
+          path: |
+            dist/*.exe
+            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]
+    if: always()
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Download Linux artifacts
+        uses: actions/download-artifact@v4
+        continue-on-error: true
+        with:
+          name: linux-artifacts
+          path: dist
+
+      - name: Download Windows artifacts
+        uses: actions/download-artifact@v4
+        continue-on-error: true
+        with:
+          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:
+          generate_release_notes: true
+          files: dist/*

.gitignore

@@ -1,36 +1,48 @@
-node_modules/
+node_modules/
-dist/
+dist/
-*.log
+*.log
-.DS_Store
+.DS_Store
-Thumbs.db
+Thumbs.db
-.env
+.env
-.env.local
+.env.local
-*.swp
+*.swp
-*.swo
+*.swo
-*~
+*~
-.vscode/
+.vscode/*
-.idea/
+!.vscode/launch.json
-*.iml
+.idea/
-out/
+*.iml
-.cache/
+out/
-.npm/
+.cache/
-.electron/
+.npm/
-package-lock.json
+.electron/
-
+# package-lock.json is intentionally tracked for reproducible CI builds
-# Screenshots and temp files
+
-*.png.bak
+# Downloaded tool binaries (fetched at build time via scripts/download-tools.js)
-Screen.png
+bin/
-dark.png
+
-light.png
+# Code signing certificates — never commit private keys
-pdf.png
+*.pfx
-uvmodal.png
+*.p12
-nul
+
-*.tmp
+# Screenshots and temp files
-
+*.png.bak
-# Development screenshots
+Screen.png
-pdf\ modal.png
+dark.png
-
+light.png
-# Claude/AI development files
+pdf.png
-.claude/
+uvmodal.png
-CLAUDE.md
+nul
-agents.md
+*.tmp
+
+# Development screenshots
+pdf\ modal.png
+
+# Claude/AI development files
+.claude/
+CLAUDE.md
+agents.md
+coverage/
+
+# Superpowers brainstorm artifacts
+.superpowers/

.prettierrc

@@ -1,11 +1,11 @@
-{
+{
-  "semi": true,
+  "semi": true,
-  "singleQuote": true,
+  "singleQuote": true,
-  "tabWidth": 2,
+  "tabWidth": 2,
-  "useTabs": false,
+  "useTabs": false,
-  "trailingComma": "es5",
+  "trailingComma": "es5",
-  "bracketSpacing": true,
+  "bracketSpacing": true,
-  "arrowParens": "always",
+  "arrowParens": "always",
-  "printWidth": 100,
+  "printWidth": 100,
-  "endOfLine": "auto"
+  "endOfLine": "auto"
-}
+}

.security-hardening/01-vulnerability-scan.md

@@ -0,0 +1,469 @@
+# Security Assessment Report: MarkdownConverter v4.0.0
+
+**Assessment Date:** 2026-03-15
+**Application:** MarkdownConverter - Electron-based Markdown editor and document converter
+**Target Version:** 4.0.0
+**Assessor:** Security Audit Agent
+
+---
+
+## Executive Summary
+
+This assessment identified **10 security findings** ranging from **Critical to Low severity**. The most significant concerns involve insecure Electron security configuration that could allow XSS attacks to escalate to full system access, arbitrary code execution via the REPL feature, and missing input validation on file operations.
+
+| Severity | Count |
+|----------|-------|
+| Critical | 2 |
+| High | 3 |
+| Medium | 3 |
+| Low | 2 |
+
+---
+
+## Vulnerability Findings
+
+### CVE-MC-001: Insecure Electron Security Configuration (Critical)
+
+**CVSS 3.1 Score: 9.6 (Critical)**
+**CWE-265: CWE-1021: Improper Restriction of Renderers**
+
+**Location:** `src/main.js` (lines 328-332)
+
+```javascript
+webPreferences: {
+  nodeIntegration: true,
+  contextIsolation: false,
+  spellcheck: true
+},
+```
+
+**Description:**
+The main application window has `nodeIntegration: true` and `contextIsolation: false`, which is the most insecure Electron configuration. This allows the renderer process direct access to Node.js APIs, meaning any XSS vulnerability in the markdown rendering or external content could lead to full system compromise.
+
+**Exploitability:**
+- An attacker who can inject malicious JavaScript (via markdown files, XSS in preview, or compromised dependencies) gains immediate access to:
+  - Full file system read/write via `fs` module
+  - Command execution via `child_process`
+  - Network access via `net` module
+  - All system resources
+
+**Attack Scenario:**
+1. User opens a malicious markdown file containing embedded JavaScript
+2. The JavaScript executes in the renderer with full Node.js access
+3. Attacker can read sensitive files, execute commands, exfiltrate data
+
+**Remediation:**
+```javascript
+webPreferences: {
+  nodeIntegration: false,
+  contextIsolation: true,
+  sandbox: true,
+  preload: path.join(__dirname, 'preload.js')
+}
+```
+
+**Note:** The preload.js file already implements a secure IPC bridge but it is not being utilized for the main window.
+
+---
+
+### CVE-MC-002: Arbitrary Code Execution via REPL Feature (Critical)
+
+**CVSS 3.1 Score: 9.3 (Critical)**
+**CWE-94: Improper Control of Generation of Code ('Code Injection')**
+
+**Location:** `src/main.js` (lines 4369-4396)
+
+**Description:**
+The `execute-code` IPC handler allows execution of arbitrary Python and Bash scripts through the REPL panel. While JavaScript execution appears to have been removed or limited, Python and Bash commands are executed via `execFile` with user-supplied code.
+
+**Vulnerable Code Pattern:**
+```javascript
+ipcMain.handle('execute-code', async (event, { code, language }) => {
+  // ...
+  if (language === 'python' || language === 'py') {
+    cmd = 'python';
+    args = ['-c', code];
+  }
+  // ...
+  execFile(cmd, args, { timeout }, (err, stdout, stderr) => {
+    // ...
+  });
+});
+```
+
+**Exploitability:**
+- Users can be tricked into running malicious code blocks
+- Markdown files can contain executable code blocks with "Run" buttons
+- No sandboxing or permission restrictions on executed code
+
+**Attack Scenario:**
+1. Attacker creates markdown file with malicious Python code block
+2. User clicks "Run" button in preview
+3. Python code executes with user's full permissions
+4. Attacker gains code execution on victim's machine
+
+**Remediation:**
+- Remove arbitrary code execution feature entirely, OR
+- Implement strict sandboxing (Docker, VM, or restricted Python environment)
+- Add user confirmation dialogs with clear warnings
+- Execute in isolated environment with no filesystem/network access
+- Implement allowlist of safe operations
+
+---
+
+### CVE-MC-003: Potential XSS in Markdown Rendering (High)
+
+**CVSS 3.1 Score: 8.0 (High)**
+**CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')**
+
+**Location:** `src/renderer.js` (lines 387-419)
+
+**Description:**
+While DOMPurify is used to sanitize HTML, several extensions to marked.js may bypass sanitization:
+
+1. **Custom Admonition Extension (lines 51-77):**
+```javascript
+marked.use({
+    extensions: [{
+        name: 'admonition',
+        // ...
+        renderer(token) {
+            const inner = this.parser.parse(token.text);
+            return `<div class="admonition admonition-${token.admonitionType}">
+                <div class="admonition-title">${icon} ${token.admonitionType...}</div>
+                <div class="admonition-content">${inner}</div>
+            </div>`;
+        }
+    }]
+});
+```
+
+2. **innerHTML Assignments (line 419):**
+```javascript
+preview.innerHTML = sanitizedHtml;
+```
+
+**Exploitability:**
+- Combined with CVE-MC-001, XSS leads to full system compromise
+- Custom markdown extensions may not be properly sanitized
+- Admonition type is directly interpolated into HTML without escaping
+
+**Remediation:**
+- Ensure all custom markdown extensions escape user input
+- Add Content Security Policy that blocks inline scripts
+- Use `textContent` instead of `innerHTML` where possible
+- Audit all custom marked.js extensions for XSS vectors
+
+---
+
+### CVE-MC-004: Missing Path Traversal Protection (High)
+
+**CVSS 3.1 Score: 7.8 (High)**
+**CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')**
+
+**Location:** `src/main.js` (lines 4241-4281)
+
+**Description:**
+The `list-directory` and `open-file-path` IPC handlers accept arbitrary file paths without validation:
+
+```javascript
+ipcMain.handle('list-directory', async (event, dirPath) => {
+  try {
+    if (!dirPath) { /* dialog */ }
+    // No path validation - accepts any path
+    const entries = fs.readdirSync(dirPath, { withFileTypes: true });
+    // ...
+  }
+});
+
+ipcMain.on('open-file-path', (event, filePath) => {
+  // No path validation
+  if (!fs.existsSync(filePath)) return;
+  const content = fs.readFileSync(filePath, 'utf-8');
+  mainWindow.webContents.send('file-opened', { path: filePath, content });
+});
+```
+
+**Exploitability:**
+- Malicious renderer code can read any file on the system
+- No restriction to a sandbox directory
+- Combined with XSS, attacker can exfiltrate sensitive files
+
+**Remediation:**
+```javascript
+const ALLOWED_DIRECTORIES = [app.getPath('documents'), app.getPath('desktop')];
+
+function isPathAllowed(filePath) {
+  const resolved = path.resolve(filePath);
+  return ALLOWED_DIRECTORIES.some(dir => resolved.startsWith(dir));
+}
+```
+
+---
+
+### CVE-MC-005: Weak Content Security Policy (High)
+
+**CVSS 3.1 Score: 7.5 (High)**
+**CWE-1021: Improper Restriction of Renderers**
+
+**Location:** `src/index.html` (line 5)
+
+```html
+<meta http-equiv="Content-Security-Policy" content="default-src 'self';
+  script-src 'self' 'unsafe-inline' 'unsafe-eval' https://cdn.jsdelivr.net;
+  style-src 'self' 'unsafe-inline' https://cdnjs.cloudflare.com;
+  img-src 'self' data: blob: file:;
+  font-src 'self' data:;
+  connect-src 'self' https://www.plantuml.com;">
+```
+
+**Description:**
+The CSP contains several security weaknesses:
+
+1. **`'unsafe-inline'` in script-src** - Allows inline script injection
+2. **`'unsafe-eval'` in script-src** - Allows `eval()` and similar functions
+3. **`https://cdn.jsdelivr.net`** - Allows scripts from external CDN (supply chain risk)
+4. **`file:` in img-src** - Allows loading local files as images (potential information disclosure)
+
+**Exploitability:**
+- XSS attacks can execute arbitrary scripts
+- External CDN compromise could inject malicious code
+- `eval()` enables dynamic code execution
+
+**Remediation:**
+- Remove `'unsafe-inline'` and `'unsafe-eval'`
+- Use nonces or hashes for inline scripts
+- Remove external CDNs or use Subresource Integrity (SRI)
+- Remove `file:` from img-src
+
+---
+
+### CVE-MC-006: Insecure Window Configuration for PDF Export (Medium)
+
+**CVSS 3.1 Score: 6.5 (Medium)**
+**CWE-1021: Improper Restriction of Renderers**
+
+**Location:** `src/main.js` (lines 2579-2585)
+
+```javascript
+const pdfWindow = new BrowserWindow({
+  show: false,
+  webPreferences: {
+    nodeIntegration: true,
+    contextIsolation: false
+  }
+});
+```
+
+**Description:**
+Hidden windows created for PDF export also have insecure configurations, allowing potential privilege escalation.
+
+**Remediation:**
+```javascript
+webPreferences: {
+  nodeIntegration: false,
+  contextIsolation: true,
+  sandbox: true
+}
+```
+
+---
+
+### CVE-MC-007: PlantUML Server Data Exfiltration (Medium)
+
+**CVSS 3.1 Score: 5.3 (Medium)**
+**CWE-359: Exposure of Private Information**
+
+**Location:** `src/renderer.js` (lines 470-487)
+
+```javascript
+const plantumlBlocks = preview.querySelectorAll('pre code.language-plantuml');
+plantumlBlocks.forEach((block) => {
+    const code = block.textContent;
+    // ...
+    const encoded = plantumlEncode(code);
+    const img = document.createElement('img');
+    img.src = `https://www.plantuml.com/plantuml/svg/${encoded}`;
+    // ...
+});
+```
+
+**Description:**
+PlantUML diagram content is sent to an external server (plantuml.com) for rendering. This could leak sensitive information contained in diagrams.
+
+**Exploitability:**
+- Diagrams containing proprietary information, system architecture, or internal processes are sent to third-party servers
+- No user consent or notification before external data transmission
+
+**Remediation:**
+- Use local PlantUML rendering with Java
+- Add user warning before sending data to external service
+- Implement opt-in for external rendering
+
+---
+
+### CVE-MC-008: Inconsistent Security Settings Across Windows (Medium)
+
+**CVSS 3.1 Score: 5.5 (Medium)**
+**CWE-1021: Improper Restriction of Renderers**
+
+**Description:**
+Security settings are inconsistent across different windows:
+
+| Window | nodeIntegration | contextIsolation | Security |
+|--------|-----------------|------------------|----------|
+| Main Window | true | false | Insecure |
+| About Dialog | false | true | Secure |
+| Dependencies Dialog | false | true | Secure |
+| ASCII Generator | false | true | Secure |
+| Table Generator | false | true | Secure |
+| PDF Export Window | true | false | Insecure |
+| Hidden Conversion Window | true | false | Insecure |
+
+**Remediation:**
+Apply secure configuration (`nodeIntegration: false`, `contextIsolation: true`) consistently across all windows.
+
+---
+
+### CVE-MC-009: Command Execution via External Tools (Low)
+
+**CVSS 3.1 Score: 4.4 (Low)**
+**CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')**
+
+**Location:** `src/main.js` (lines 1915-1972)
+
+**Description:**
+While the application uses `execFile` instead of `exec` (good practice), external tools (Pandoc, LibreOffice, FFmpeg, ImageMagick) are invoked with file paths that could potentially be manipulated.
+
+**Positive Finding:**
+The code correctly uses `execFile` with argument arrays instead of shell commands, mitigating most command injection vectors.
+
+**Remaining Risk:**
+- File paths are not validated against malicious names
+- Special characters in filenames could cause issues with external tools
+
+**Remediation:**
+- Validate file paths before passing to external tools
+- Sanitize filenames of special characters
+
+---
+
+### CVE-MC-010: Missing Dependency Version Pinning (Low)
+
+**CVSS 3.1 Score: 3.5 (Low)**
+**CWE-1035: Using Components with Known Vulnerabilities**
+
+**Location:** `package.json`
+
+**Description:**
+Dependencies use `^` version ranges which could allow automatic updates to versions with vulnerabilities:
+
+```json
+"dependencies": {
+  "marked": "^17.0.3",
+  "dompurify": "^3.3.1",
+  "mermaid": "^11.12.3",
+  // ...
+}
+```
+
+**Remediation:**
+- Pin exact versions in production
+- Use lockfile (package-lock.json)
+- Implement dependency scanning in CI/CD pipeline
+
+---
+
+## Attack Surface Map
+
+```
+┌─────────────────────────────────────────────────────────────────┐
+│                    EXTERNAL ATTACK SURFACE                       │
+├─────────────────────────────────────────────────────────────────┤
+│  Markdown Files (.md)     ─────► XSS via Preview Rendering      │
+│  Code Blocks              ─────► Arbitrary Code Execution       │
+│  PlantUML Diagrams        ─────► Data Exfiltration              │
+│  External CDNs            ─────► Supply Chain Attacks           │
+└─────────────────────────────────────────────────────────────────┘
+                              │
+                              ▼
+┌─────────────────────────────────────────────────────────────────┐
+│                    RENDERER PROCESS (Insecure)                   │
+├─────────────────────────────────────────────────────────────────┤
+│  nodeIntegration: true   ─────► Direct Node.js Access           │
+│  contextIsolation: false ─────► Prototype Pollution Risk        │
+│  DOMPurify Sanitization  ─────► May be bypassed via extensions  │
+│  Custom Marked Extensions ────► XSS Vectors                     │
+└─────────────────────────────────────────────────────────────────┘
+                              │
+                              ▼
+┌─────────────────────────────────────────────────────────────────┐
+│                    IPC BRIDGE (Preload.js)                       │
+├─────────────────────────────────────────────────────────────────┤
+│  Channel Whitelisting    ─────► Good Practice                   │
+│  Not Used for Main Window ────► Security Bypassed               │
+└─────────────────────────────────────────────────────────────────┘
+                              │
+                              ▼
+┌─────────────────────────────────────────────────────────────────┐
+│                    MAIN PROCESS (Full Privileges)                │
+├─────────────────────────────────────────────────────────────────┤
+│  File Operations         ─────► No Path Validation              │
+│  Code Execution          ─────► Python/Bash via REPL            │
+│  External Tools          ─────► Pandoc, FFmpeg, LibreOffice     │
+│  PDF Operations          ─────► Merge, Encrypt, Decrypt         │
+└─────────────────────────────────────────────────────────────────┘
+```
+
+---
+
+## Positive Security Findings
+
+1. **Preload.js Implementation:** A secure IPC bridge with channel whitelisting is implemented
+2. **DOMPurify Usage:** HTML sanitization is applied to markdown output
+3. **execFile Usage:** External commands use `execFile` instead of `exec`
+4. **File Size Limits:** 50MB maximum file size is enforced
+5. **Rate Limiting:** Conversion operations have rate limiting (2 second minimum interval)
+6. **Error Message Sanitization:** Absolute paths are stripped from error messages
+
+---
+
+## Prioritized Remediation Roadmap
+
+### Phase 1 - Critical (Immediate)
+1. Set `nodeIntegration: false` and `contextIsolation: true` for main window
+2. Remove or sandbox the code execution (REPL) feature
+3. Implement proper preload.js usage for all windows
+
+### Phase 2 - High Priority (1-2 Weeks)
+4. Add path traversal protection to file operations
+5. Strengthen Content Security Policy
+6. Audit and fix custom markdown extensions for XSS
+
+### Phase 3 - Medium Priority (1 Month)
+7. Implement consistent security settings across all windows
+8. Add local PlantUML rendering option
+9. Implement dependency scanning in CI/CD
+
+### Phase 4 - Low Priority (Ongoing)
+10. Pin dependency versions
+11. Add security headers to all generated HTML
+12. Implement security logging and monitoring
+
+---
+
+## Compliance Considerations
+
+- **OWASP Top 10 2021:** A03:2021 - Injection, A05:2021 - Security Misconfiguration
+- **OWASP ASVS:** V12 - File Handling, V13 - API Security
+- **NIST CSF:** PR.AC - Access Control, PR.DS - Data Security
+
+---
+
+## Conclusion
+
+The MarkdownConverter application has significant security vulnerabilities that could allow an attacker to execute arbitrary code, access sensitive files, and compromise the user's system. The most critical issue is the insecure Electron configuration combined with XSS attack vectors in the markdown rendering pipeline.
+
+**Overall Security Rating: HIGH RISK**
+
+The positive finding is that much of the security infrastructure (preload.js, DOMPurify) is already in place but not properly utilized. With focused remediation effort, the application can achieve a much stronger security posture.

.security-hardening/02-threat-model.md

@@ -0,0 +1,215 @@
+# STRIDE Threat Model - MarkdownConverter v4.0.0
+
+**Analysis Date:** 2026-03-15
+**Methodology:** STRIDE + MITRE ATT&CK
+**Overall Risk Score:** 7.8 (HIGH)
+
+---
+
+## Executive Summary
+
+The analysis identified **10 vulnerabilities** with a combined risk score of **7.8 (HIGH)**. The most critical issues enable complete system compromise through XSS-to-RCE attack chains.
+
+---
+
+## Critical Findings
+
+| Priority | CVE | Vulnerability | CVSS | Impact |
+|----------|-----|---------------|------|--------|
+| P0 | CVE-MC-001 | Insecure Electron Config (`nodeIntegration: true`, `contextIsolation: false`) | 9.6 | Complete system compromise |
+| P0 | CVE-MC-002 | Arbitrary code execution via REPL feature | 9.3 | Remote code execution |
+| P1 | CVE-MC-003 | XSS in markdown rendering | 8.0 | Session hijacking, RCE chain |
+| P1 | CVE-MC-004 | Path traversal vulnerability | 7.8 | Arbitrary file write |
+| P1 | CVE-MC-005 | Weak Content Security Policy | 7.5 | XSS enablement |
+| P2 | CVE-MC-006 | Insecure window config for PDF export | 6.5 | Privilege escalation |
+| P2 | CVE-MC-007 | PlantUML server data exfiltration | 5.3 | Information disclosure |
+| P2 | CVE-MC-008 | Inconsistent security settings | 5.5 | Configuration weakness |
+| P3 | CVE-MC-009 | Command execution via external tools | 4.4 | Command injection risk |
+| P3 | CVE-MC-010 | Missing dependency version pinning | 3.5 | Supply chain risk |
+
+---
+
+## Key Attack Vectors
+
+### 1. XSS to RCE Chain (Critical)
+```
+Malicious Markdown File
+        │
+        ▼
+XSS in Preview (CVE-MC-003)
+        │
+        ▼
+nodeIntegration: true (CVE-MC-001)
+        │
+        ▼
+Full Node.js Access
+        │
+        ▼
+Complete System Compromise
+```
+
+### 2. REPL Code Execution (Critical)
+```
+Code Block in Markdown
+        │
+        ▼
+User clicks "Run"
+        │
+        ▼
+REPL executes Python/Bash (CVE-MC-002)
+        │
+        ▼
+Arbitrary Code Execution
+```
+
+### 3. Data Exfiltration (Medium)
+```
+PlantUML Diagram Content
+        │
+        ▼
+Sent to www.plantuml.com (CVE-MC-007)
+        │
+        ▼
+Sensitive Architecture Leaked
+```
+
+---
+
+## STRIDE Analysis
+
+### S - Spoofing
+| ID | Threat | Likelihood | Impact | Risk |
+|----|--------|------------|--------|------|
+| S1 | Attacker spoofs markdown file origin | Medium | High | High |
+| S2 | Malicious code pretends to be safe | High | Critical | Critical |
+
+### T - Tampering
+| ID | Threat | Likelihood | Impact | Risk |
+|----|--------|------------|--------|------|
+| T1 | XSS modifies local files | High | Critical | Critical |
+| T2 | Conversion output tampered | Medium | Medium | Medium |
+
+### R - Repudiation
+| ID | Threat | Likelihood | Impact | Risk |
+|----|--------|------------|--------|------|
+| R1 | No audit trail for operations | Low | Low | Low |
+
+### I - Information Disclosure
+| ID | Threat | Likelihood | Impact | Risk |
+|----|--------|------------|--------|------|
+| I1 | XSS exposes file system | High | Critical | Critical |
+| I2 | PlantUML content leaked | Medium | Medium | Medium |
+| I3 | Error messages reveal paths | Low | Low | Low |
+
+### D - Denial of Service
+| ID | Threat | Likelihood | Impact | Risk |
+|----|--------|------------|--------|------|
+| D1 | Malicious code crashes app | Medium | Medium | Medium |
+| D2 | Large file exhausts resources | Low | Low | Low |
+
+### E - Elevation of Privilege
+| ID | Threat | Likelihood | Impact | Risk |
+|----|--------|------------|--------|------|
+| E1 | XSS → nodeIntegration → System | High | Critical | Critical |
+| E2 | REPL code execution | High | Critical | Critical |
+
+---
+
+## MITRE ATT&CK Mapping
+
+| Technique | ID | Applicability |
+|-----------|-----|---------------|
+| User Execution | T1204.002 | Malicious markdown file |
+| Command and Scripting Interpreter | T1059.007 | JavaScript via nodeIntegration |
+| Command and Scripting Interpreter | T1059.006 | Python via REPL |
+| Command and Scripting Interpreter | T1059.004 | Bash via REPL |
+| Exploit Public-Facing Application | T1190 | XSS in preview |
+| Data Exfiltration Over Web Service | T1043 | PlantUML server |
+| File and Directory Discovery | T1083 | Path traversal |
+
+---
+
+## Trust Boundaries
+
+```
+┌─────────────────────────────────────────────────────────────────────┐
+│                         TRUST BOUNDARY MAP                          │
+├─────────────────────────────────────────────────────────────────────┤
+│                                                                     │
+│   ┌─────────────┐         ┌─────────────────────────────────────┐  │
+│   │   USER      │ ──────► │        APPLICATION                  │  │
+│   │ (Untrusted) │         │  ┌───────────┐  ┌───────────────┐  │  │
+│   └─────────────┘         │  │ Renderer  │  │ Main Process  │  │  │
+│                           │  │ (Sandbox) │  │ (Privileged)  │  │  │
+│                           │  └─────┬─────┘  └───────┬───────┘  │  │
+│                           │        │  IPC           │           │  │
+│                           │        ▼                ▼           │  │
+│                           │  ┌─────────────────────────────┐   │  │
+│                           │  │      File System            │   │  │
+│                           │  └─────────────────────────────┘   │  │
+│                           └─────────────────────────────────────┘  │
+│                                           │                        │
+│                                           ▼                        │
+│   ┌─────────────────────────────────────────────────────────────┐ │
+│   │                    EXTERNAL SERVICES                         │ │
+│   │  • PlantUML Server (www.plantuml.com)                       │ │
+│   │  • CDN (cdn.jsdelivr.net, cdnjs.cloudflare.com) [REMOVED]   │ │
+│   │  • External Tools (Pandoc, FFmpeg, LibreOffice)             │ │
+│   └─────────────────────────────────────────────────────────────┘ │
+│                                                                     │
+└─────────────────────────────────────────────────────────────────────┘
+```
+
+---
+
+## Business Impact Analysis
+
+### Successful Attack Consequences
+
+| Impact Category | Estimate |
+|-----------------|----------|
+| Data breach costs | $500,000 - $5,000,000+ |
+| Regulatory fines (GDPR) | Up to 4% annual revenue |
+| Reputation damage | Incalculable |
+| Business disruption | Hours to days |
+
+### Affected Assets
+- User documents and files
+- System credentials
+- Proprietary information in diagrams
+- Application integrity
+
+---
+
+## Remediation Priority
+
+### P0 - Immediate (24-48 hours)
+1. **CVE-MC-001**: Set `nodeIntegration: false`, `contextIsolation: true`
+2. **CVE-MC-002**: Remove or sandbox REPL code execution
+
+### P1 - Short-term (1-2 weeks)
+3. **CVE-MC-003**: Audit markdown extensions for XSS
+4. **CVE-MC-004**: Add path validation (✅ COMPLETED)
+5. **CVE-MC-005**: Strengthen CSP (✅ COMPLETED)
+
+### P2 - Medium-term (1 month)
+6. **CVE-MC-006**: Consistent window security settings
+7. **CVE-MC-007**: Add local PlantUML option or warning
+8. **CVE-MC-008**: Audit all BrowserWindow configurations
+
+### P3 - Long-term
+9. **CVE-MC-009**: Validate filenames for external tools
+10. **CVE-MC-010**: Pin dependency versions, add scanning
+
+---
+
+## Conclusion
+
+The MarkdownConverter application has a **HIGH RISK** threat profile due to the combination of:
+- Untrusted content rendering (markdown preview)
+- Direct system access (nodeIntegration)
+- Code execution capability (REPL)
+
+**Immediate action required on P0 items to reduce attack surface.**
+
+The fixes applied in this session (CSP, path traversal, UI accessibility) have reduced the risk profile, but the critical nodeIntegration issue requires significant refactoring.

.security-hardening/state.json

@@ -0,0 +1,27 @@
+{
+  "target": "MarkdownConverter Electron Application",
+  "status": "in_progress",
+  "depth": "comprehensive",
+  "compliance_frameworks": ["owasp"],
+  "current_step": 3,
+  "current_phase": 1,
+  "completed_steps": ["vulnerability-scan", "threat-modeling"],
+  "files_created": ["01-vulnerability-scan.md", "02-threat-model.md"],
+  "started_at": "2026-03-15T00:09:00.000Z",
+  "last_updated": "2026-03-15T00:25:00.000Z",
+  "findings_summary": {
+    "critical": 2,
+    "high": 3,
+    "medium": 3,
+    "low": 2,
+    "total": 10
+  },
+  "fixes_applied": {
+    "csp_external_cdns_removed": true,
+    "path_traversal_protection_added": true,
+    "aria_labels_added": true,
+    "focus_visible_styles_added": true,
+    "tab_close_button_resized": true,
+    "duplicate_font_size_fixed": true
+  }
+}

.ui-design/reviews/full-ui-review_20260315.md

@@ -0,0 +1,522 @@
+# Comprehensive UI Design Review - MarkdownConverter Electron Application
+
+## Executive Summary
+
+This review covers the UI design of the MarkdownConverter Electron application, analyzing visual design, usability, code quality, and performance across all UI files. The application has a solid foundation but has several areas requiring attention.
+
+---
+
+## 1. Visual Design Review
+
+### 1.1 Spacing & Layout Consistency
+
+| Severity | Issue | Location | Recommendation |
+|----------|-------|----------|----------------|
+| **Major** | Inconsistent padding values across files | Multiple CSS files | Standardize to 4px/8px base scale |
+| **Major** | Multiple reset declarations | `styles.css:1-5`, `styles-modern.css:42-47` | Consolidate resets into single file |
+| **Minor** | Tab padding varies between themes | `styles.css:36`, `styles-modern.css:101` | Use CSS variables for consistent padding |
+| **Minor** | Container padding inconsistency | `styles.css:17-21`, `styles-modern.css:63-69` | Define single container style |
+
+**Code Example - Duplicate Reset:**
+
+```css
+/* styles.css:1-5 */
+* {
+    margin: 0;
+    padding: 0;
+    box-sizing: border-box;
+}
+
+/* styles-modern.css:42-47 - DUPLICATE */
+* {
+  margin: 0;
+  padding: 0;
+  box-sizing: border-box;
+}
+```
+
+**Fix Recommendation:**
+```css
+/* Create a single base.css or remove from styles-modern.css */
+/* Use CSS variables for spacing scale */
+:root {
+  --space-1: 4px;
+  --space-2: 8px;
+  --space-3: 12px;
+  --space-4: 16px;
+  --space-5: 24px;
+  --space-6: 32px;
+}
+```
+
+### 1.2 Typography Consistency
+
+| Severity | Issue | Location | Recommendation |
+|----------|-------|----------|----------------|
+| **Major** | Font-family declared multiple times with different fallbacks | `styles.css:8`, `styles-modern.css:50`, `styles-concreteinfo.css:32` | Standardize font stack |
+| **Major** | Duplicate font-size declarations | `styles.css:228-230` | Remove duplicate |
+| **Minor** | Inconsistent line-height values | Multiple files | Create type scale variables |
+
+**Code Example - Duplicate font-size:**
+```css
+/* styles.css:226-230 */
+.preview-content {
+    max-width: none;
+    margin: 0;
+    padding: 20px 24px 24px 24px;
+    line-height: 1.6;
+    font-size: 15px;
+    font-size: 14px;  /* DUPLICATE - overwrites previous */
+}
+```
+
+**Fix Recommendation:**
+```css
+/* styles.css - Remove duplicate */
+.preview-content {
+    font-size: 14px;  /* Keep only one */
+    line-height: 1.6;
+}
+```
+
+### 1.3 Color Usage and Contrast Accessibility
+
+| Severity | Issue | Location | Recommendation |
+|----------|-------|----------|----------------|
+| **Critical** | Hardcoded colors instead of CSS variables | `styles.css:27-29`, `styles.css:37-38`, etc. | Use CSS custom properties |
+| **Major** | Inconsistent gray scale definitions | Multiple files define different grays | Consolidate to single palette |
+| **Minor** | Some contrast ratios may be insufficient | Status bar text colors | Verify WCAG 2.1 AA compliance |
+
+**Code Example - Hardcoded colors:**
+```css
+/* styles.css:27-29 */
+.tab-bar {
+    background: #f0f0f0;  /* Should use var(--gray-100) */
+    border-bottom: 1px solid #ddd;  /* Should use var(--gray-300) */
+}
+```
+
+**Fix Recommendation:**
+```css
+/* Use the existing palette from styles-modern.css */
+.tab-bar {
+    background: var(--gray-100, #f3f4f6);
+    border-bottom: 1px solid var(--gray-300, #d1d5db);
+}
+```
+
+### 1.4 Dark Mode Support Quality
+
+| Severity | Issue | Location | Recommendation |
+|----------|-------|----------|----------------|
+| **Major** | Dark theme selectors inconsistent | `styles.css` uses `body.theme-dark`, `styles-sidebar.css:108` uses `body[class*="dark"]` | Standardize selector pattern |
+| **Minor** | Missing dark theme support for some components | `.breadcrumb-bar`, command palette | Add dark mode variants |
+| **Suggestion** | Repetitive dark theme declarations | `styles-concreteinfo.css:362-425` | Use CSS custom properties for theming |
+
+**Code Example - Inconsistent selectors:**
+```css
+/* styles.css */
+body.theme-dark .tab-bar { ... }
+
+/* styles-sidebar.css */
+body[class*="dark"] .sidebar-icons { ... }
+```
+
+**Fix Recommendation:**
+```css
+/* Choose one pattern and apply consistently */
+/* Option 1: Class-based (recommended) */
+body.theme-dark .tab-bar,
+body.theme-dark .sidebar-icons { ... }
+
+/* Option 2: Attribute-based */
+body[data-theme="dark"] .tab-bar { ... }
+```
+
+---
+
+## 2. Usability Review
+
+### 2.1 Clickable/Tappable Areas
+
+| Severity | Issue | Location | Recommendation |
+|----------|-------|----------|----------------|
+| **Critical** | Tab close button too small (16x16px) | `styles.css:62-77` | Increase to minimum 24x24px |
+| **Major** | Sidebar icons at minimum size | `styles-sidebar.css:35-47` (36x36px) | Consider 40-44px for better touch |
+| **Minor** | Toolbar buttons at edge of minimum | `styles.css:120-131` (32x32px) | Acceptable for mouse, small for touch |
+
+**Code Example - Small close button:**
+```css
+/* styles.css:62-77 */
+.tab-close {
+    width: 16px;   /* TOO SMALL - below 24px minimum */
+    height: 16px;  /* TOO SMALL */
+}
+```
+
+**Fix Recommendation:**
+```css
+.tab-close {
+    width: 24px;
+    height: 24px;
+    border-radius: 4px;
+}
+
+/* Add touch-friendly hit area */
+.tab-close::before {
+    content: '';
+    position: absolute;
+    top: -4px;
+    left: -4px;
+    right: -4px;
+    bottom: -4px;
+}
+```
+
+### 2.2 Hover/Focus States
+
+| Severity | Issue | Location | Recommendation |
+|----------|-------|----------|----------------|
+| **Critical** | Missing focus-visible styles | All interactive elements | Add :focus-visible for keyboard navigation |
+| **Major** | No focus indicators on toolbar buttons | `styles.css:133-140` | Add visible focus ring |
+| **Minor** | Inconsistent hover transitions | Various components | Standardize transition duration |
+
+**Code Example - Missing focus styles:**
+```css
+/* styles.css:120-131 - No focus state */
+.toolbar button {
+    /* ... no focus style */
+}
+
+.toolbar button:hover {
+    background: #e0e0e0;
+    border-color: #ccc;
+}
+```
+
+**Fix Recommendation:**
+```css
+.toolbar button:focus-visible {
+    outline: 2px solid var(--primary-dark, #5661b3);
+    outline-offset: 2px;
+}
+
+.toolbar button:hover {
+    background: #e0e0e0;
+    border-color: #ccc;
+}
+```
+
+### 2.3 Loading and Error State Handling
+
+| Severity | Issue | Location | Recommendation |
+|----------|-------|----------|----------------|
+| **Major** | Generic error message without styling | `renderer.js:384-386`, `renderer.js:508-511` | Create styled error components |
+| **Minor** | No loading indicators for async operations | Sidebar panels | Add skeleton loaders or spinners |
+| **Minor** | `git-loading` class exists but minimal styling | `styles-sidebar.css:227` | Enhance with animation |
+
+**Code Example - Plain error display:**
+```javascript
+// renderer.js:384-386
+preview.innerHTML = '<p style="color: red; padding: 20px;">Error: Required libraries...';
+// Inline styles should be in CSS
+```
+
+**Fix Recommendation:**
+```css
+/* Add to styles.css */
+.preview-error {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+    padding: 40px 20px;
+    color: var(--ci-danger, #dc3545);
+    text-align: center;
+}
+
+.preview-error-icon {
+    font-size: 48px;
+    margin-bottom: 16px;
+}
+```
+
+### 2.4 Accessibility (ARIA, Semantic HTML)
+
+| Severity | Issue | Location | Recommendation |
+|----------|-------|----------|----------------|
+| **Critical** | Buttons without accessible labels | `index.html:31` (tab close), `index.html:33` (new tab) | Add aria-label |
+| **Critical** | SVG icons lack aria-hidden | All toolbar buttons | Add aria-hidden="true" |
+| **Major** | Missing role attributes on tabs | `index.html:29-33` | Add role="tablist", role="tab" |
+| **Major** | No skip links | `index.html` | Add skip to main content link |
+| **Minor** | Dialog missing aria-modal | Export dialogs | Add aria-modal="true" |
+
+**Code Example - Missing accessibility attributes:**
+```html
+<!-- index.html:31 - Current -->
+<button class="tab-close" title="Close tab">x</button>
+
+<!-- index.html:33 - Current -->
+<button class="new-tab-button" id="new-tab-btn" title="New tab">+</button>
+```
+
+**Fix Recommendation:**
+```html
+<!-- Improved with ARIA -->
+<div class="tab-bar" id="tab-bar" role="tablist" aria-label="Document tabs">
+    <div class="tab active" data-tab-id="1" role="tab" aria-selected="true" aria-controls="tab-content-1">
+        <span class="tab-title">Untitled</span>
+        <button class="tab-close" aria-label="Close tab" title="Close tab">×</button>
+    </div>
+    <button class="new-tab-button" id="new-tab-btn" aria-label="Create new tab" title="New tab">+</button>
+</div>
+
+<!-- SVG icons should have aria-hidden -->
+<button id="btn-bold" title="Bold (Ctrl+B)" aria-label="Bold">
+    <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" aria-hidden="true">
+        ...
+    </svg>
+</button>
+```
+
+### 2.5 Keyboard Navigation
+
+| Severity | Issue | Location | Recommendation |
+|----------|-------|----------|----------------|
+| **Major** | Tab order may skip sidebar icons | Sidebar panel | Verify logical tab order |
+| **Minor** | No escape key handling for dialogs | Export dialogs | Add escape to close |
+| **Minor** | Find dialog lacks full keyboard support | `renderer.js:804-866` | Add Ctrl+F shortcut hint |
+
+---
+
+## 3. Code Quality Review
+
+### 3.1 CSS Organization & Naming
+
+| Severity | Issue | Location | Recommendation |
+|----------|-------|----------|----------------|
+| **Major** | No clear CSS architecture | All CSS files | Adopt BEM or similar methodology |
+| **Major** | Overly generic class names | `.pane`, `.tab`, `.container` | Use more specific naming |
+| **Minor** | Mixed naming conventions | camelCase (`tabBar`), kebab-case (`tab-bar`) | Standardize to kebab-case |
+| **Minor** | Magic numbers | Various pixel values | Replace with spacing variables |
+
+### 3.2 CSS Specificity Issues
+
+| Severity | Issue | Location | Recommendation |
+|----------|-------|----------|----------------|
+| **Major** | Excessive use of `!important` | `styles.css:14` | Restructure to avoid |
+| **Major** | Deep selector nesting | Dark theme selectors | Flatten and use CSS variables |
+| **Minor** | ID selectors for styling | `styles.css:233-247` | Prefer class selectors |
+
+**Code Example - Problematic specificity:**
+```css
+/* styles.css:14 - Avoid !important */
+.hidden {
+    display: none !important;
+}
+
+/* styles.css:397-431 - Deep nesting */
+body.theme-dark #preview h1,
+body.theme-dark [id^="preview-"] h1,
+body.theme-dark .preview-content h1 {
+    color: #c9d1d9;
+    border-bottom-color: #21262d;
+}
+```
+
+**Fix Recommendation:**
+```css
+/* Use utility class pattern */
+[hidden] { display: none; }
+
+/* Use CSS custom properties for theming */
+.preview-content h1 {
+    color: var(--text-primary);
+    border-bottom-color: var(--border-color);
+}
+
+/* Theme applies variables */
+body.theme-dark {
+    --text-primary: #c9d1d9;
+    --border-color: #21262d;
+}
+```
+
+### 3.3 Reusable Style Definitions
+
+| Severity | Issue | Location | Recommendation |
+|----------|-------|----------|----------------|
+| **Major** | Repeated button styles | Multiple files | Create button component classes |
+| **Major** | Dialog styles duplicated | Export, batch, print preview dialogs | Create modal component |
+| **Minor** | Similar form field styles scattered | Export dialog inputs | Create form component |
+
+**Code Example - Duplicated button styles:**
+```css
+/* styles.css */
+.toolbar button { /* button styles */ }
+.tab-close { /* button styles */ }
+.new-tab-button { /* button styles */ }
+#export-dialog-close { /* button styles */ }
+
+/* styles-sidebar.css */
+.sidebar-icon { /* similar button styles */ }
+.sidebar-panel-close { /* similar button styles */ }
+```
+
+**Fix Recommendation:**
+```css
+/* Create button component system */
+.btn {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    border: none;
+    cursor: pointer;
+    transition: all var(--transition-fast);
+}
+
+.btn--icon {
+    width: 32px;
+    height: 32px;
+    border-radius: var(--radius-md);
+}
+
+.btn--close {
+    font-size: 14px;
+    font-weight: bold;
+    border-radius: var(--radius-sm);
+}
+```
+
+### 3.4 Documentation
+
+| Severity | Issue | Location | Recommendation |
+|----------|-------|----------|----------------|
+| **Minor** | Limited CSS documentation | All CSS files | Add section comments |
+| **Minor** | No component documentation | Sidebar components | Add JSDoc-style comments |
+| **Suggestion** | No design tokens documentation | CSS variables | Create tokens documentation |
+
+---
+
+## 4. Performance Review
+
+### 4.1 CSS Optimization
+
+| Severity | Issue | Location | Recommendation |
+|----------|-------|----------|----------------|
+| **Major** | Large CSS files (105KB main, 78KB modern) | `styles.css`, `styles-modern.css` | Split into smaller modules |
+| **Major** | Duplicate style definitions | Multiple files | Remove redundancies |
+| **Minor** | Unused styles likely present | Theme variations | Audit and remove unused |
+
+### 4.2 Asset Loading
+
+| Severity | Issue | Location | Recommendation |
+|----------|-------|----------|----------------|
+| **Major** | highlight.js CSS loaded synchronously | `index.html:14` | Load asynchronously or bundle |
+| **Minor** | Font files could be preloaded | `fonts.css` | Add preload links in HTML |
+| **Suggestion** | Consider CSS critical path | Above-the-fold styles | Inline critical CSS |
+
+**Code Example - Sync stylesheet loading:**
+```html
+<!-- index.html:14 - Blocks rendering -->
+<link rel="stylesheet" href="../node_modules/highlight.js/styles/default.css">
+```
+
+**Fix Recommendation:**
+```html
+<!-- Non-blocking load -->
+<link rel="stylesheet" href="../node_modules/highlight.js/styles/default.css" media="print" onload="this.media='all'">
+
+<!-- Or preload fonts -->
+<link rel="preload" href="../assets/fonts/Inter-Regular.woff2" as="font" type="font/woff2" crossorigin>
+```
+
+### 4.3 Animation Performance
+
+| Severity | Issue | Location | Recommendation |
+|----------|-------|----------|----------------|
+| **Minor** | Some transitions on expensive properties | `styles-modern.css:111-112` | Prefer transform/opacity |
+| **Suggestion** | Missing will-change hints | Complex animations | Add will-change for GPU hints |
+
+---
+
+## 5. Component-Specific Issues
+
+### 5.1 Tab System
+
+| File | Issues |
+|------|--------|
+| `styles.css:23-97` | Inconsistent active state styling, small close button |
+| `renderer.js:88-346` | Tab content created via innerHTML (XSS risk) |
+
+### 5.2 Sidebar
+
+| File | Issues |
+|------|--------|
+| `styles-sidebar.css` | Good structure but missing focus states |
+| `sidebar-manager.js` | Clean implementation, needs ARIA |
+
+### 5.3 Export Dialogs
+
+| File | Issues |
+|------|--------|
+| `styles.css:1060-1355` | Monolithic, should be component |
+| `index.html:171-331` | Complex nested structure needs semantic HTML |
+
+### 5.4 Welcome Screen
+
+| File | Issues |
+|------|--------|
+| `styles-welcome.css` | Minimal styles, good foundation |
+| Missing hover states for keyboard focus | Add :focus-visible |
+
+---
+
+## 6. Prioritized Fix Recommendations
+
+### Critical (Immediate)
+
+1. **Add missing ARIA attributes** to all interactive elements
+2. **Increase tab close button size** to minimum 24x24px
+3. **Add focus-visible styles** for keyboard navigation
+4. **Fix duplicate font-size declaration** in `.preview-content`
+
+### Major (Next Sprint)
+
+1. **Consolidate CSS resets** into single location
+2. **Create button component system** with variants
+3. **Standardize dark theme selectors** across all files
+4. **Replace hardcoded colors** with CSS variables
+5. **Create modal/dialog component** to reduce duplication
+
+### Minor (Future)
+
+1. **Document CSS architecture** and naming conventions
+2. **Audit and remove unused styles**
+3. **Add loading state components** (skeletons, spinners)
+4. **Implement CSS module splitting** for better performance
+
+---
+
+## 7. Summary Statistics
+
+| Category | Critical | Major | Minor | Suggestions |
+|----------|----------|-------|-------|-------------|
+| Visual Design | 1 | 5 | 4 | 1 |
+| Usability | 3 | 4 | 4 | 0 |
+| Code Quality | 0 | 6 | 4 | 1 |
+| Performance | 0 | 3 | 2 | 2 |
+| **Total** | **4** | **18** | **14** | **4** |
+
+---
+
+## Conclusion
+
+The MarkdownConverter application has a functional UI with good visual variety through its theme system. However, there are significant opportunities for improvement in:
+
+1. **Accessibility** - Critical for users with disabilities
+2. **Code organization** - Reduce CSS duplication and improve maintainability
+3. **Component consistency** - Standardize interactive element sizing and states
+4. **Performance** - Optimize CSS loading and reduce bundle size
+
+Addressing the Critical and Major issues will significantly improve both user experience and code maintainability.

.ui-design/reviews/review_state.json

@@ -0,0 +1,17 @@
+{
+  "review_id": "full-ui-review_20260315",
+  "target": "src/ (Entire UI Directory)",
+  "focus_areas": ["visual", "usability", "code", "performance"],
+  "context": "comprehensive",
+  "platform": "desktop",
+  "status": "complete",
+  "started_at": "2026-03-15T00:09:00.000Z",
+  "completed_at": "2026-03-15T00:12:00.000Z",
+  "issues_found": 40,
+  "severity_counts": {
+    "critical": 4,
+    "major": 18,
+    "minor": 14,
+    "suggestion": 4
+  }
+}

.vscode/launch.json

@@ -0,0 +1,48 @@
+{
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "Debug Main Process",
+      "type": "node",
+      "request": "launch",
+      "cwd": "${workspaceFolder}",
+      "runtimeExecutable": "${workspaceFolder}/node_modules/.bin/electron",
+      "windows": {
+        "runtimeExecutable": "${workspaceFolder}/node_modules/.bin/electron.cmd"
+      },
+      "args": ["."],
+      "outputCapture": "std",
+      "env": {
+        "NODE_ENV": "development"
+      }
+    },
+    {
+      "name": "Debug Renderer Process",
+      "type": "chrome",
+      "request": "attach",
+      "port": 9222,
+      "webRoot": "${workspaceFolder}/src",
+      "timeout": 30000
+    },
+    {
+      "name": "Debug Main + Renderer",
+      "type": "node",
+      "request": "launch",
+      "cwd": "${workspaceFolder}",
+      "runtimeExecutable": "${workspaceFolder}/node_modules/.bin/electron",
+      "windows": {
+        "runtimeExecutable": "${workspaceFolder}/node_modules/.bin/electron.cmd"
+      },
+      "args": [".", "--remote-debugging-port=9222"],
+      "outputCapture": "std",
+      "env": {
+        "NODE_ENV": "development"
+      },
+      "serverReadyAction": {
+        "pattern": "listening on port ([0-9]+)",
+        "uriFormat": "http://localhost:%s",
+        "action": "debugWithChrome"
+      }
+    }
+  ]
+}

AGENTS.md

@@ -0,0 +1,25 @@
+# Repository Guidelines
+
+## Project Structure & Module Organization
+Core application code lives in `src/`. Use `src/main.js` for the Electron main process, `src/preload.js` for the preload bridge, and `src/renderer.js` plus `src/editor/`, `src/sidebar/`, `src/repl/`, and `src/utils/` for renderer-side features. Electron adapter code is in `src/adapters/electron/`. Reusable markdown/document templates live in `src/templates/`. Static assets and icons are in `assets/`. Tests are in `tests/`, and build output goes to `dist/`.
+
+## Build, Test, and Development Commands
+- `npm start`: launch the Electron app locally.
+- `npm test`: run the Jest suite once.
+- `npm run test:watch`: rerun tests during local development.
+- `npm run test:coverage`: generate coverage output.
+- `npm run lint` / `npm run lint:fix`: check or fix ESLint issues in `src` and `tests`.
+- `npm run format` / `npm run format:check`: apply or verify Prettier formatting.
+- `npm run build:linux`, `npm run build:win`, `npm run build:mac`: create platform packages with `electron-builder`.
+
+## Coding Style & Naming Conventions
+This repo uses Prettier and ESLint. Follow `.prettierrc`: 2-space indentation, single quotes, semicolons, trailing commas where valid in ES5, and a 100-character line width. Prefer `camelCase` for variables/functions, `PascalCase` for classes, and kebab-case for file names only when already established. Keep module boundaries clear: UI logic in renderer modules, OS/file-system work behind Electron IPC and adapters.
+
+## Testing Guidelines
+Tests use Jest with `jest-environment-jsdom`. Add new tests under `tests/` with `*.test.js` names, mirroring the feature area when possible, for example `tests/sidebar.test.js` or `tests/print-preview.test.js`. Update or add regression tests for renderer behavior, preload APIs, and utility helpers when fixing bugs. Run `npm test` before opening a PR; use `npm run test:coverage` for larger refactors.
+
+## Commit & Pull Request Guidelines
+Recent history follows Conventional Commit prefixes such as `feat:`, `fix:`, and `refactor:`. Keep subjects short and imperative, for example `fix: guard modal cleanup on close`. PRs should describe the user-visible change, note test coverage, link any related issue, and include screenshots or GIFs for UI changes.
+
+## Security & Configuration Tips
+Do not bypass preload boundaries or introduce direct `eval`/dynamic code paths; ESLint already treats these as errors. Export and conversion features depend on external tools such as Pandoc, FFmpeg, ImageMagick, and LibreOffice, so document any new runtime dependency in `README.md` and packaging config.

CLAUDE.md

@@ -0,0 +1,103 @@
+# 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.

EXPORT_FIX_SUMMARY.md

@@ -1,103 +1,103 @@
-# Export Functionality Fix - Summary
+# Export Functionality Fix - Summary
-
+
-## Issues Found and Fixed
+## Issues Found and Fixed
-
+
-### 1. **Primary Issue: Pandoc Installation Problem**
+### 1. **Primary Issue: Pandoc Installation Problem**
-- **Problem**: Pandoc is installed but has a system error (paging file too small)
+- **Problem**: Pandoc is installed but has a system error (paging file too small)
-- **Impact**: All pandoc-dependent exports (DOCX, LaTeX, etc.) were failing
+- **Impact**: All pandoc-dependent exports (DOCX, LaTeX, etc.) were failing
-- **Solution**: Added robust fallback mechanisms
+- **Solution**: Added robust fallback mechanisms
-
+
-### 2. **Export Function Improvements**
+### 2. **Export Function Improvements**
-
+
-#### Before (Issues):
+#### Before (Issues):
-- ❌ No pandoc availability checking
+- ❌ No pandoc availability checking
-- ❌ Poor error messages
+- ❌ Poor error messages
-- ❌ No fallback for missing pandoc
+- ❌ No fallback for missing pandoc
-- ❌ Limited debugging information
+- ❌ Limited debugging information
-
+
-#### After (Fixed):
+#### After (Fixed):
-- ✅ **Pandoc Detection**: Automatically checks if pandoc is available
+- ✅ **Pandoc Detection**: Automatically checks if pandoc is available
-- ✅ **Built-in HTML Export**: Works without pandoc using marked library
+- ✅ **Built-in HTML Export**: Works without pandoc using marked library
-- ✅ **Built-in PDF Export**: Works without pandoc using Electron's printToPDF
+- ✅ **Built-in PDF Export**: Works without pandoc using Electron's printToPDF
-- ✅ **Better Error Messages**: Clear instructions for users
+- ✅ **Better Error Messages**: Clear instructions for users
-- ✅ **Comprehensive Logging**: Debug information in console
+- ✅ **Comprehensive Logging**: Debug information in console
-- ✅ **Graceful Fallbacks**: Falls back to built-in converters when pandoc fails
+- ✅ **Graceful Fallbacks**: Falls back to built-in converters when pandoc fails
-
+
-## How It Works Now
+## How It Works Now
-
+
-### Export Process Flow:
+### Export Process Flow:
-1. **User clicks export** → Check if file is saved
+1. **User clicks export** → Check if file is saved
-2. **Select output location** → Show save dialog
+2. **Select output location** → Show save dialog
-3. **Check pandoc availability** → Async pandoc detection
+3. **Check pandoc availability** → Async pandoc detection
-4. **Choose export method**:
+4. **Choose export method**:
-   - **If pandoc available**: Use pandoc with format-specific options
+   - **If pandoc available**: Use pandoc with format-specific options
-   - **If pandoc not available**: 
+   - **If pandoc not available**: 
-     - HTML → Use built-in marked converter
+     - HTML → Use built-in marked converter
-     - PDF → Use Electron's printToPDF
+     - PDF → Use Electron's printToPDF
-     - Other formats → Show helpful error with installation guide
+     - Other formats → Show helpful error with installation guide
-
+
-### Supported Export Formats:
+### Supported Export Formats:
-
+
-#### ✅ **Always Work** (no pandoc required):
+#### ✅ **Always Work** (no pandoc required):
-- **HTML**: Built-in converter using marked library
+- **HTML**: Built-in converter using marked library
-- **PDF**: Built-in converter using Electron
+- **PDF**: Built-in converter using Electron
-
+
-#### ✅ **Work with Pandoc** (better quality):
+#### ✅ **Work with Pandoc** (better quality):
-- **DOCX**: Microsoft Word format
+- **DOCX**: Microsoft Word format
-- **LaTeX**: LaTeX document
+- **LaTeX**: LaTeX document
-- **RTF**: Rich Text Format  
+- **RTF**: Rich Text Format  
-- **ODT**: OpenDocument Text
+- **ODT**: OpenDocument Text
-- **EPUB**: E-book format
+- **EPUB**: E-book format
-- **PPTX**: PowerPoint presentations
+- **PPTX**: PowerPoint presentations
-- **ODP**: OpenDocument Presentations
+- **ODP**: OpenDocument Presentations
-
+
-## Testing the Fixes
+## Testing the Fixes
-
+
-### Manual Test Procedure:
+### Manual Test Procedure:
-1. **Start the application**: `npm start`
+1. **Start the application**: `npm start`
-2. **Open test file**: Load `test-export.md`
+2. **Open test file**: Load `test-export.md`
-3. **Test HTML export**: File → Export → HTML (should work)
+3. **Test HTML export**: File → Export → HTML (should work)
-4. **Test PDF export**: File → Export → PDF (should work)
+4. **Test PDF export**: File → Export → PDF (should work)
-5. **Test DOCX export**: File → Export → DOCX (will show pandoc error)
+5. **Test DOCX export**: File → Export → DOCX (will show pandoc error)
-
+
-### Expected Behavior:
+### Expected Behavior:
-- **HTML/PDF exports**: Should work immediately and create files
+- **HTML/PDF exports**: Should work immediately and create files
-- **Other format exports**: Should show informative error about pandoc
+- **Other format exports**: Should show informative error about pandoc
-- **Console logs**: Should show debug information about export process
+- **Console logs**: Should show debug information about export process
-
+
-## Fix Summary
+## Fix Summary
-
+
-### Code Changes Made:
+### Code Changes Made:
-1. **Added `checkPandocAvailability()` function** - Detects pandoc
+1. **Added `checkPandocAvailability()` function** - Detects pandoc
-2. **Added `exportToHTML()` function** - Built-in HTML export
+2. **Added `exportToHTML()` function** - Built-in HTML export
-3. **Added `exportToPDFElectron()` function** - Built-in PDF export
+3. **Added `exportToPDFElectron()` function** - Built-in PDF export
-4. **Added `exportWithPandoc()` helper** - Generic pandoc export
+4. **Added `exportWithPandoc()` helper** - Generic pandoc export
-5. **Added `exportWithPandocPDF()` helper** - PDF with fallbacks
+5. **Added `exportWithPandocPDF()` helper** - PDF with fallbacks
-6. **Improved `exportFile()` function** - Main export logic with detection
+6. **Improved `exportFile()` function** - Main export logic with detection
-7. **Enhanced error handling** - Better user messages
+7. **Enhanced error handling** - Better user messages
-8. **Added comprehensive logging** - Debug information
+8. **Added comprehensive logging** - Debug information
-
+
-### Files Modified:
+### Files Modified:
-- `src/main.js` - Enhanced export functionality
+- `src/main.js` - Enhanced export functionality
-- `test-export.md` - Created test file
+- `test-export.md` - Created test file
-- `test-export-functionality.js` - Created test script
+- `test-export-functionality.js` - Created test script
-
+
-## User Instructions
+## User Instructions
-
+
-### For Users Without Pandoc:
+### For Users Without Pandoc:
-- ✅ **HTML and PDF exports work perfectly**
+- ✅ **HTML and PDF exports work perfectly**
-- ✅ **No additional software needed**
+- ✅ **No additional software needed**
-- ✅ **Professional-looking output with proper styling**
+- ✅ **Professional-looking output with proper styling**
-
+
-### For Users Who Want All Formats:
+### For Users Who Want All Formats:
-1. **Install Pandoc**: Visit https://pandoc.org/installing.html
+1. **Install Pandoc**: Visit https://pandoc.org/installing.html
-2. **For PDF with LaTeX**: Also install MiKTeX or TeX Live
+2. **For PDF with LaTeX**: Also install MiKTeX or TeX Live
-3. **Restart the application** after installation
+3. **Restart the application** after installation
-4. **All export formats will then be available**
+4. **All export formats will then be available**
-
+
-## Result
+## Result
-🎉 **Export functionality is now working reliably!**
+🎉 **Export functionality is now working reliably!**
-- Built-in exports (HTML, PDF) work without any dependencies
+- Built-in exports (HTML, PDF) work without any dependencies
-- Clear error messages guide users for advanced formats
+- Clear error messages guide users for advanced formats
-- Robust error handling prevents crashes
+- Robust error handling prevents crashes
 - Better user experience with informative dialogs

GEMINI.md

@@ -1,82 +1,82 @@
-# GEMINI.md
+# GEMINI.md
-
+
-## Project Overview
+## Project Overview
-
+
-This project is a cross-platform Markdown editor and converter named **PanConverter**. It is built using the Electron framework, allowing it to run on Windows, macOS, and Linux. The application provides a rich text editor for writing Markdown, a live preview pane, and robust export capabilities powered by Pandoc.
+This project is a cross-platform Markdown editor and converter named **PanConverter**. It is built using the Electron framework, allowing it to run on Windows, macOS, and Linux. The application provides a rich text editor for writing Markdown, a live preview pane, and robust export capabilities powered by Pandoc.
-
+
-The core technologies used are:
+The core technologies used are:
-- **Electron:** For creating the desktop application.
+- **Electron:** For creating the desktop application.
-- **JavaScript:** The primary programming language.
+- **JavaScript:** The primary programming language.
-- **Pandoc:** For converting Markdown to various formats like PDF, DOCX, HTML, etc.
+- **Pandoc:** For converting Markdown to various formats like PDF, DOCX, HTML, etc.
-- **Marked:** For parsing and rendering the Markdown preview in real-time.
+- **Marked:** For parsing and rendering the Markdown preview in real-time.
-- **CodeMirror:** As the underlying text editor component.
+- **CodeMirror:** As the underlying text editor component.
-- **highlight.js:** For syntax highlighting in the editor.
+- **highlight.js:** For syntax highlighting in the editor.
-- **DOMPurify:** To sanitize the HTML output in the preview pane for security.
+- **DOMPurify:** To sanitize the HTML output in the preview pane for security.
-
+
-The application features a tabbed interface for working with multiple files, various themes, find and replace functionality, and detailed document statistics.
+The application features a tabbed interface for working with multiple files, various themes, find and replace functionality, and detailed document statistics.
-
+
-## Building and Running
+## Building and Running
-
+
-To build and run this project locally, you will need to have Node.js and npm installed.
+To build and run this project locally, you will need to have Node.js and npm installed.
-
+
-### Installation
+### Installation
-
+
-1.  **Clone the repository:**
+1.  **Clone the repository:**
-    ```bash
+    ```bash
-    git clone https://github.com/amitwh/pan-converter.git
+    git clone https://github.com/amitwh/pan-converter.git
-    cd pan-converter
+    cd pan-converter
-    ```
+    ```
-
+
-2.  **Install dependencies:**
+2.  **Install dependencies:**
-    ```bash
+    ```bash
-    npm install
+    npm install
-    ```
+    ```
-
+
-### Running the Application
+### Running the Application
-
+
-To run the application in development mode, use the following command:
+To run the application in development mode, use the following command:
-
+
-```bash
+```bash
-npm start
+npm start
-```
+```
-
+
-### Building the Application
+### Building the Application
-
+
-You can build the application for different platforms using the scripts defined in `package.json`.
+You can build the application for different platforms using the scripts defined in `package.json`.
-
+
--   **Build for the current platform:**
+-   **Build for the current platform:**
-    ```bash
+    ```bash
-    npm run build
+    npm run build
-    ```
+    ```
-
+
--   **Build for a specific platform:**
+-   **Build for a specific platform:**
-    ```bash
+    ```bash
-    npm run build:win    # For Windows
+    npm run build:win    # For Windows
-    npm run build:mac    # For macOS
+    npm run build:mac    # For macOS
-    npm run build:linux  # For Linux
+    npm run build:linux  # For Linux
-    ```
+    ```
-
+
--   **Build for all platforms at once:**
+-   **Build for all platforms at once:**
-    ```bash
+    ```bash
-    npm run dist:all
+    npm run dist:all
-    ```
+    ```
-
+
-The distributable files will be located in the `dist/` directory.
+The distributable files will be located in the `dist/` directory.
-
+
-### Testing
+### Testing
-
+
-The project does not have a dedicated test suite configured. The `test` script in `package.json` currently returns an error.
+The project does not have a dedicated test suite configured. The `test` script in `package.json` currently returns an error.
-
+
-```bash
+```bash
-npm test
+npm test
-```
+```
-
+
-## Development Conventions
+## Development Conventions
-
+
--   **Code Style:** The codebase is written in JavaScript (ES6+). There is no linter or formatter configured, but the code generally follows standard JavaScript conventions.
+-   **Code Style:** The codebase is written in JavaScript (ES6+). There is no linter or formatter configured, but the code generally follows standard JavaScript conventions.
--   **Main vs. Renderer Process:** The application logic is split between the Electron main process (`src/main.js`) and the renderer process (`src/renderer.js`).
+-   **Main vs. Renderer Process:** The application logic is split between the Electron main process (`src/main.js`) and the renderer process (`src/renderer.js`).
-    -   `src/main.js` handles window management, application menus, file system operations, and communication with the operating system.
+    -   `src/main.js` handles window management, application menus, file system operations, and communication with the operating system.
-    -   `src/renderer.js` manages the user interface, editor functionality, and the Markdown preview.
+    -   `src/renderer.js` manages the user interface, editor functionality, and the Markdown preview.
--   **Dependencies:** Project dependencies are managed through `package.json`. `devDependencies` are used for the build process, while `dependencies` are required for the application to run.
+-   **Dependencies:** Project dependencies are managed through `package.json`. `devDependencies` are used for the build process, while `dependencies` are required for the application to run.
--   **User Data:** The application stores settings and recent files in the user's application data directory.
+-   **User Data:** The application stores settings and recent files in the user's application data directory.
--   **Pandoc Integration:** The application relies on a system-installed version of Pandoc for its export functionality. It does not bundle Pandoc.
+-   **Pandoc Integration:** The application relies on a system-installed version of Pandoc for its export functionality. It does not bundle Pandoc.

LICENSE

@@ -1,21 +1,21 @@
-MIT License
+MIT License
-
+
-Copyright (c) 2024 Amit Haridas
+Copyright (c) 2024 Amit Haridas
-
+
-Permission is hereby granted, free of charge, to any person obtaining a copy
+Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
+of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
+in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
+copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
+furnished to do so, subject to the following conditions:
-
+
-The above copyright notice and this permission notice shall be included in all
+The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
+copies or substantial portions of the Software.
-
+
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.

PUSH_INSTRUCTIONS.md

@@ -1,12 +1,12 @@
-# Test Double-Click File Opening
+# Test Double-Click File Opening
-
+
-This is a test file to verify double-click functionality.
+This is a test file to verify double-click functionality.
-
+
-## Features to Test
+## Features to Test
-- File should load automatically
+- File should load automatically
-- Content should display in editor
+- Content should display in editor
-- Tab should show filename
+- Tab should show filename
-- Preview should render markdown
+- Preview should render markdown
-
+
-**This text should be bold**
+**This text should be bold**
-*This text should be italic*
+*This text should be italic*

README.latex

@@ -1,378 +1,378 @@
-\hypertarget{panconverter}{%
+\hypertarget{panconverter}{%
-\section{PanConverter}\label{panconverter}}
+\section{PanConverter}\label{panconverter}}
-
+
-A cross-platform Markdown editor and converter powered by Pandoc.
+A cross-platform Markdown editor and converter powered by Pandoc.
-
+
-\begin{figure}
+\begin{figure}
-\centering
+\centering
-\includegraphics{assets/icon.png}
+\includegraphics{assets/icon.png}
-\caption{PanConverter}
+\caption{PanConverter}
-\end{figure}
+\end{figure}
-
+
-\hypertarget{features}{%
+\hypertarget{features}{%
-\subsection{Features}\label{features}}
+\subsection{Features}\label{features}}
-
+
-\hypertarget{advanced-markdown-editor}{%
+\hypertarget{advanced-markdown-editor}{%
-\subsubsection{✨ Advanced Markdown
+\subsubsection{✨ Advanced Markdown
-Editor}\label{advanced-markdown-editor}}
+Editor}\label{advanced-markdown-editor}}
-
+
-\begin{itemize}
+\begin{itemize}
-\tightlist
+\tightlist
-\item
+\item
-  🗂️ \textbf{Tabbed Interface} - Work with multiple files simultaneously
+  🗂️ \textbf{Tabbed Interface} - Work with multiple files simultaneously
-  in separate tabs
+  in separate tabs
-\item
+\item
-  📝 \textbf{Rich Text Editor} - Full-featured editor with syntax
+  📝 \textbf{Rich Text Editor} - Full-featured editor with syntax
-  highlighting and comprehensive toolbar
+  highlighting and comprehensive toolbar
-\item
+\item
-  🔍 \textbf{Find \& Replace} - Powerful search and replace with match
+  🔍 \textbf{Find \& Replace} - Powerful search and replace with match
-  highlighting and navigation
+  highlighting and navigation
-\item
+\item
-  🔢 \textbf{Line Numbers} - Toggle line numbers for easier code editing
+  🔢 \textbf{Line Numbers} - Toggle line numbers for easier code editing
-  and navigation
+  and navigation
-\item
+\item
-  ↩️ \textbf{Smart Auto-Indentation} - Automatic list continuation and
+  ↩️ \textbf{Smart Auto-Indentation} - Automatic list continuation and
-  intelligent indentation
+  intelligent indentation
-\item
+\item
-  ⏪ \textbf{Undo/Redo} - Full undo/redo support with keyboard shortcuts
+  ⏪ \textbf{Undo/Redo} - Full undo/redo support with keyboard shortcuts
-\item
+\item
-  ⌨️ \textbf{Advanced Shortcuts} - Tab indentation, line selection, and
+  ⌨️ \textbf{Advanced Shortcuts} - Tab indentation, line selection, and
-  smart text formatting
+  smart text formatting
-\item
+\item
-  📂 \textbf{File Association Support} - Open markdown files directly
+  📂 \textbf{File Association Support} - Open markdown files directly
-  from file manager
+  from file manager
-\end{itemize}
+\end{itemize}
-
+
-\hypertarget{themes-interface}{%
+\hypertarget{themes-interface}{%
-\subsubsection{🎨 Themes \& Interface}\label{themes-interface}}
+\subsubsection{🎨 Themes \& Interface}\label{themes-interface}}
-
+
-\begin{itemize}
+\begin{itemize}
-\tightlist
+\tightlist
-\item
+\item
-  👁️ \textbf{Live Preview} - See your markdown rendered in real-time
+  👁️ \textbf{Live Preview} - See your markdown rendered in real-time
-  with synchronized scrolling
+  with synchronized scrolling
-\item
+\item
-  🎨 \textbf{Multiple Themes} - Choose from Light, Dark, Solarized,
+  🎨 \textbf{Multiple Themes} - Choose from Light, Dark, Solarized,
-  Monokai, or GitHub themes
+  Monokai, or GitHub themes
-\item
+\item
-  💾 \textbf{Auto-Save} - Never lose your work with automatic saving
+  💾 \textbf{Auto-Save} - Never lose your work with automatic saving
-  every 30 seconds
+  every 30 seconds
-\end{itemize}
+\end{itemize}
-
+
-\hypertarget{export-conversion}{%
+\hypertarget{export-conversion}{%
-\subsubsection{📤 Export \& Conversion}\label{export-conversion}}
+\subsubsection{📤 Export \& Conversion}\label{export-conversion}}
-
+
-\begin{itemize}
+\begin{itemize}
-\tightlist
+\tightlist
-\item
+\item
-  📄 \textbf{Enhanced PDF Export} - Robust PDF generation with multiple
+  📄 \textbf{Enhanced PDF Export} - Robust PDF generation with multiple
-  LaTeX engine fallbacks (XeLaTeX, PDFLaTeX, wkhtmltopdf)
+  LaTeX engine fallbacks (XeLaTeX, PDFLaTeX, wkhtmltopdf)
-\item
+\item
-  📄 \textbf{Document Export} - Convert to HTML, DOCX, LaTeX, RTF, ODT,
+  📄 \textbf{Document Export} - Convert to HTML, DOCX, LaTeX, RTF, ODT,
-  EPUB, PowerPoint (PPTX), and OpenDocument Presentation (ODP)
+  EPUB, PowerPoint (PPTX), and OpenDocument Presentation (ODP)
-\item
+\item
-  📊 \textbf{Spreadsheet Export} - Export markdown tables to Excel
+  📊 \textbf{Spreadsheet Export} - Export markdown tables to Excel
-  (XLSX/XLS) and OpenDocument Spreadsheet (ODS) formats
+  (XLSX/XLS) and OpenDocument Spreadsheet (ODS) formats
-\item
+\item
-  📥 \textbf{Document Import} - Import DOCX, ODT, RTF, HTML, PDF, and
+  📥 \textbf{Document Import} - Import DOCX, ODT, RTF, HTML, PDF, and
-  presentation files to markdown
+  presentation files to markdown
-\item
+\item
-  📋 \textbf{Table Creation Helper} - Built-in table generator for easy
+  📋 \textbf{Table Creation Helper} - Built-in table generator for easy
-  markdown table creation
+  markdown table creation
-\end{itemize}
+\end{itemize}
-
+
-\hypertarget{platform-support}{%
+\hypertarget{platform-support}{%
-\subsubsection{🖥️ Platform Support}\label{platform-support}}
+\subsubsection{🖥️ Platform Support}\label{platform-support}}
-
+
-\begin{itemize}
+\begin{itemize}
-\tightlist
+\tightlist
-\item
+\item
-  \textbf{Cross-Platform} - Works seamlessly on Windows, macOS, and
+  \textbf{Cross-Platform} - Works seamlessly on Windows, macOS, and
-  Linux
+  Linux
-\end{itemize}
+\end{itemize}
-
+
-\hypertarget{installation}{%
+\hypertarget{installation}{%
-\subsection{Installation}\label{installation}}
+\subsection{Installation}\label{installation}}
-
+
-\hypertarget{prerequisites}{%
+\hypertarget{prerequisites}{%
-\subsubsection{Prerequisites}\label{prerequisites}}
+\subsubsection{Prerequisites}\label{prerequisites}}
-
+
-\begin{itemize}
+\begin{itemize}
-\tightlist
+\tightlist
-\item
+\item
-  \href{https://pandoc.org/installing.html}{Pandoc} must be installed
+  \href{https://pandoc.org/installing.html}{Pandoc} must be installed
-  for export functionality
+  for export functionality
-
+
-  \begin{itemize}
+  \begin{itemize}
-  \tightlist
+  \tightlist
-  \item
+  \item
-    \textbf{Ubuntu/Debian}: \texttt{sudo\ apt-get\ install\ pandoc}
+    \textbf{Ubuntu/Debian}: \texttt{sudo\ apt-get\ install\ pandoc}
-  \item
+  \item
-    \textbf{macOS}: \texttt{brew\ install\ pandoc}
+    \textbf{macOS}: \texttt{brew\ install\ pandoc}
-  \item
+  \item
-    \textbf{Windows}: Download installer from Pandoc website
+    \textbf{Windows}: Download installer from Pandoc website
-  \end{itemize}
+  \end{itemize}
-\end{itemize}
+\end{itemize}
-
+
-\hypertarget{pdf-export-requirements}{%
+\hypertarget{pdf-export-requirements}{%
-\subsubsection{PDF Export Requirements}\label{pdf-export-requirements}}
+\subsubsection{PDF Export Requirements}\label{pdf-export-requirements}}
-
+
-For optimal PDF export, install a LaTeX engine (recommended): -
+For optimal PDF export, install a LaTeX engine (recommended): -
-\textbf{Ubuntu/Debian}:
+\textbf{Ubuntu/Debian}:
-\texttt{sudo\ apt-get\ install\ texlive-xetex\ texlive-latex-base} -
+\texttt{sudo\ apt-get\ install\ texlive-xetex\ texlive-latex-base} -
-\textbf{macOS}: \texttt{brew\ install\ -\/-cask\ mactex} -
+\textbf{macOS}: \texttt{brew\ install\ -\/-cask\ mactex} -
-\textbf{Windows}: Install MiKTeX or TeX Live - \textbf{Alternative}:
+\textbf{Windows}: Install MiKTeX or TeX Live - \textbf{Alternative}:
-\texttt{sudo\ apt-get\ install\ wkhtmltopdf} (fallback option)
+\texttt{sudo\ apt-get\ install\ wkhtmltopdf} (fallback option)
-
+
-\hypertarget{download}{%
+\hypertarget{download}{%
-\subsubsection{Download}\label{download}}
+\subsubsection{Download}\label{download}}
-
+
-Download the latest release for your platform from the
+Download the latest release for your platform from the
-\href{https://github.com/amitwh/pan-converter/releases}{Releases} page.
+\href{https://github.com/amitwh/pan-converter/releases}{Releases} page.
-
+
-\hypertarget{linux}{%
+\hypertarget{linux}{%
-\paragraph{Linux}\label{linux}}
+\paragraph{Linux}\label{linux}}
-
+
-\begin{itemize}
+\begin{itemize}
-\tightlist
+\tightlist
-\item
+\item
-  \textbf{AppImage}: \texttt{PanConverter-1.3.1.AppImage} (universal,
+  \textbf{AppImage}: \texttt{PanConverter-1.3.1.AppImage} (universal,
-  may require \texttt{-\/-no-sandbox} flag)
+  may require \texttt{-\/-no-sandbox} flag)
-\item
+\item
-  \textbf{Debian Package}: \texttt{pan-converter\_1.3.1\_amd64.deb}
+  \textbf{Debian Package}: \texttt{pan-converter\_1.3.1\_amd64.deb}
-\item
+\item
-  \textbf{Snap Package}: \texttt{pan-converter\_1.3.1\_amd64.snap}
+  \textbf{Snap Package}: \texttt{pan-converter\_1.3.1\_amd64.snap}
-\end{itemize}
+\end{itemize}
-
+
-\hypertarget{install-from-source}{%
+\hypertarget{install-from-source}{%
-\subsubsection{Install from Source}\label{install-from-source}}
+\subsubsection{Install from Source}\label{install-from-source}}
-
+
-\begin{Shaded}
+\begin{Shaded}
-\begin{Highlighting}[]
+\begin{Highlighting}[]
-\FunctionTok{git}\NormalTok{ clone https://github.com/amitwh/pan{-}converter.git}
+\FunctionTok{git}\NormalTok{ clone https://github.com/amitwh/pan{-}converter.git}
-\BuiltInTok{cd}\NormalTok{ pan{-}converter}
+\BuiltInTok{cd}\NormalTok{ pan{-}converter}
-\ExtensionTok{npm}\NormalTok{ install}
+\ExtensionTok{npm}\NormalTok{ install}
-\ExtensionTok{npm}\NormalTok{ start}
+\ExtensionTok{npm}\NormalTok{ start}
-\end{Highlighting}
+\end{Highlighting}
-\end{Shaded}
+\end{Shaded}
-
+
-\hypertarget{usage}{%
+\hypertarget{usage}{%
-\subsection{Usage}\label{usage}}
+\subsection{Usage}\label{usage}}
-
+
-\hypertarget{basic-workflow}{%
+\hypertarget{basic-workflow}{%
-\subsubsection{Basic Workflow}\label{basic-workflow}}
+\subsubsection{Basic Workflow}\label{basic-workflow}}
-
+
-\begin{enumerate}
+\begin{enumerate}
-\def\labelenumi{\arabic{enumi}.}
+\def\labelenumi{\arabic{enumi}.}
-\tightlist
+\tightlist
-\item
+\item
-  \textbf{Write} - Use the editor to write your Markdown content
+  \textbf{Write} - Use the editor to write your Markdown content
-\item
+\item
-  \textbf{Preview} - Toggle the preview pane to see rendered output
+  \textbf{Preview} - Toggle the preview pane to see rendered output
-\item
+\item
-  \textbf{Theme} - Choose your preferred theme from the View menu
+  \textbf{Theme} - Choose your preferred theme from the View menu
-\item
+\item
-  \textbf{Export} - Export your document to various formats
+  \textbf{Export} - Export your document to various formats
-\end{enumerate}
+\end{enumerate}
-
+
-\hypertarget{export-options}{%
+\hypertarget{export-options}{%
-\subsubsection{Export Options}\label{export-options}}
+\subsubsection{Export Options}\label{export-options}}
-
+
-\begin{itemize}
+\begin{itemize}
-\tightlist
+\tightlist
-\item
+\item
-  \textbf{Documents}: HTML, PDF, DOCX, LaTeX, RTF, ODT, EPUB
+  \textbf{Documents}: HTML, PDF, DOCX, LaTeX, RTF, ODT, EPUB
-\item
+\item
-  \textbf{Presentations}: PowerPoint (PPTX), OpenDocument Presentation
+  \textbf{Presentations}: PowerPoint (PPTX), OpenDocument Presentation
-  (ODP)
+  (ODP)
-\item
+\item
-  \textbf{Spreadsheets}: Excel (XLSX/XLS), OpenDocument Spreadsheet
+  \textbf{Spreadsheets}: Excel (XLSX/XLS), OpenDocument Spreadsheet
-  (ODS)
+  (ODS)
-\end{itemize}
+\end{itemize}
-
+
-\hypertarget{import-conversion}{%
+\hypertarget{import-conversion}{%
-\subsubsection{Import \& Conversion}\label{import-conversion}}
+\subsubsection{Import \& Conversion}\label{import-conversion}}
-
+
-\begin{itemize}
+\begin{itemize}
-\tightlist
+\tightlist
-\item
+\item
-  \textbf{Import Documents}: Convert DOCX, ODT, RTF, HTML, PDF, and
+  \textbf{Import Documents}: Convert DOCX, ODT, RTF, HTML, PDF, and
-  presentation files to Markdown
+  presentation files to Markdown
-\item
+\item
-  \textbf{Cross-Format Conversion}: Convert current file between
+  \textbf{Cross-Format Conversion}: Convert current file between
-  multiple formats
+  multiple formats
-\item
+\item
-  \textbf{Smart Presentation Handling}: Automatic slide-level formatting
+  \textbf{Smart Presentation Handling}: Automatic slide-level formatting
-  for PPTX/ODP exports
+  for PPTX/ODP exports
-\end{itemize}
+\end{itemize}
-
+
-\hypertarget{table-creation}{%
+\hypertarget{table-creation}{%
-\subsubsection{Table Creation}\label{table-creation}}
+\subsubsection{Table Creation}\label{table-creation}}
-
+
-\begin{itemize}
+\begin{itemize}
-\tightlist
+\tightlist
-\item
+\item
-  Click the table button in the toolbar
+  Click the table button in the toolbar
-\item
+\item
-  Specify number of rows and columns
+  Specify number of rows and columns
-\item
+\item
-  Automatically generates properly formatted Markdown tables
+  Automatically generates properly formatted Markdown tables
-\end{itemize}
+\end{itemize}
-
+
-\hypertarget{keyboard-shortcuts}{%
+\hypertarget{keyboard-shortcuts}{%
-\subsection{Keyboard Shortcuts}\label{keyboard-shortcuts}}
+\subsection{Keyboard Shortcuts}\label{keyboard-shortcuts}}
-
+
-\hypertarget{file-operations}{%
+\hypertarget{file-operations}{%
-\subsubsection{File Operations}\label{file-operations}}
+\subsubsection{File Operations}\label{file-operations}}
-
+
-\begin{itemize}
+\begin{itemize}
-\tightlist
+\tightlist
-\item
+\item
-  \texttt{Ctrl/Cmd\ +\ N} - New file/tab
+  \texttt{Ctrl/Cmd\ +\ N} - New file/tab
-\item
+\item
-  \texttt{Ctrl/Cmd\ +\ T} - New tab
+  \texttt{Ctrl/Cmd\ +\ T} - New tab
-\item
+\item
-  \texttt{Ctrl/Cmd\ +\ W} - Close current tab
+  \texttt{Ctrl/Cmd\ +\ W} - Close current tab
-\item
+\item
-  \texttt{Ctrl/Cmd\ +\ Tab} - Switch to next tab
+  \texttt{Ctrl/Cmd\ +\ Tab} - Switch to next tab
-\item
+\item
-  \texttt{Ctrl/Cmd\ +\ O} - Open file
+  \texttt{Ctrl/Cmd\ +\ O} - Open file
-\item
+\item
-  \texttt{Ctrl/Cmd\ +\ S} - Save file
+  \texttt{Ctrl/Cmd\ +\ S} - Save file
-\item
+\item
-  \texttt{Ctrl/Cmd\ +\ Shift\ +\ S} - Save as
+  \texttt{Ctrl/Cmd\ +\ Shift\ +\ S} - Save as
-\item
+\item
-  \texttt{Ctrl/Cmd\ +\ I} - Import document
+  \texttt{Ctrl/Cmd\ +\ I} - Import document
-\end{itemize}
+\end{itemize}
-
+
-\hypertarget{editor-features}{%
+\hypertarget{editor-features}{%
-\subsubsection{Editor Features}\label{editor-features}}
+\subsubsection{Editor Features}\label{editor-features}}
-
+
-\begin{itemize}
+\begin{itemize}
-\tightlist
+\tightlist
-\item
+\item
-  \texttt{Ctrl/Cmd\ +\ F} - Find \& Replace
+  \texttt{Ctrl/Cmd\ +\ F} - Find \& Replace
-\item
+\item
-  \texttt{Ctrl/Cmd\ +\ Z} - Undo
+  \texttt{Ctrl/Cmd\ +\ Z} - Undo
-\item
+\item
-  \texttt{Ctrl/Cmd\ +\ Shift\ +\ Z} - Redo
+  \texttt{Ctrl/Cmd\ +\ Shift\ +\ Z} - Redo
-\item
+\item
-  \texttt{Tab} - Indent lines or insert 4 spaces
+  \texttt{Tab} - Indent lines or insert 4 spaces
-\item
+\item
-  \texttt{Shift\ +\ Tab} - Outdent selected lines
+  \texttt{Shift\ +\ Tab} - Outdent selected lines
-\item
+\item
-  \texttt{Enter} - Auto-continue lists with proper indentation
+  \texttt{Enter} - Auto-continue lists with proper indentation
-\end{itemize}
+\end{itemize}
-
+
-\hypertarget{view-navigation}{%
+\hypertarget{view-navigation}{%
-\subsubsection{View \& Navigation}\label{view-navigation}}
+\subsubsection{View \& Navigation}\label{view-navigation}}
-
+
-\begin{itemize}
+\begin{itemize}
-\tightlist
+\tightlist
-\item
+\item
-  \texttt{Ctrl/Cmd\ +\ P} - Toggle preview
+  \texttt{Ctrl/Cmd\ +\ P} - Toggle preview
-\item
+\item
-  \texttt{Ctrl/Cmd\ +\ Enter} - Toggle preview (alternative)
+  \texttt{Ctrl/Cmd\ +\ Enter} - Toggle preview (alternative)
-\item
+\item
-  \texttt{Escape} - Close find dialog
+  \texttt{Escape} - Close find dialog
-\end{itemize}
+\end{itemize}
-
+
-\hypertarget{building}{%
+\hypertarget{building}{%
-\subsection{Building}\label{building}}
+\subsection{Building}\label{building}}
-
+
-\begin{Shaded}
+\begin{Shaded}
-\begin{Highlighting}[]
+\begin{Highlighting}[]
-\CommentTok{\# Install dependencies}
+\CommentTok{\# Install dependencies}
-\ExtensionTok{npm}\NormalTok{ install}
+\ExtensionTok{npm}\NormalTok{ install}
-
+
-\CommentTok{\# Generate icons}
+\CommentTok{\# Generate icons}
-\ExtensionTok{npm}\NormalTok{ run generate{-}icons}
+\ExtensionTok{npm}\NormalTok{ run generate{-}icons}
-
+
-\CommentTok{\# Build for current platform}
+\CommentTok{\# Build for current platform}
-\ExtensionTok{npm}\NormalTok{ run build}
+\ExtensionTok{npm}\NormalTok{ run build}
-
+
-\CommentTok{\# Build for specific platform}
+\CommentTok{\# Build for specific platform}
-\ExtensionTok{npm}\NormalTok{ run build:win    }\CommentTok{\# Windows}
+\ExtensionTok{npm}\NormalTok{ run build:win    }\CommentTok{\# Windows}
-\ExtensionTok{npm}\NormalTok{ run build:mac    }\CommentTok{\# macOS  }
+\ExtensionTok{npm}\NormalTok{ run build:mac    }\CommentTok{\# macOS  }
-\ExtensionTok{npm}\NormalTok{ run build:linux  }\CommentTok{\# Linux (generates .deb, .AppImage, and .snap)}
+\ExtensionTok{npm}\NormalTok{ run build:linux  }\CommentTok{\# Linux (generates .deb, .AppImage, and .snap)}
-
+
-\CommentTok{\# Build for all platforms}
+\CommentTok{\# Build for all platforms}
-\ExtensionTok{npm}\NormalTok{ run dist:all}
+\ExtensionTok{npm}\NormalTok{ run dist:all}
-\end{Highlighting}
+\end{Highlighting}
-\end{Shaded}
+\end{Shaded}
-
+
-\hypertarget{version-history}{%
+\hypertarget{version-history}{%
-\subsection{Version History}\label{version-history}}
+\subsection{Version History}\label{version-history}}
-
+
-\begin{itemize}
+\begin{itemize}
-\tightlist
+\tightlist
-\item
+\item
-  \textbf{v1.3.1} - Bug fixes: Fixed file associations for
+  \textbf{v1.3.1} - Bug fixes: Fixed file associations for
-  double-clicking .md files, corrected 50/50 layout alignment for
+  double-clicking .md files, corrected 50/50 layout alignment for
-  editor/preview panes
+  editor/preview panes
-\item
+\item
-  \textbf{v1.3.0} - Major update: Tabbed interface for multiple files,
+  \textbf{v1.3.0} - Major update: Tabbed interface for multiple files,
-  enhanced PDF export with LaTeX engines, fixed file associations,
+  enhanced PDF export with LaTeX engines, fixed file associations,
-  removed redundant converter menu, improved UI architecture
+  removed redundant converter menu, improved UI architecture
-\item
+\item
-  \textbf{v1.2.1} - Comprehensive editor enhancements: Find \& Replace,
+  \textbf{v1.2.1} - Comprehensive editor enhancements: Find \& Replace,
-  Line Numbers, Undo/Redo, Auto-indentation, PowerPoint export, document
+  Line Numbers, Undo/Redo, Auto-indentation, PowerPoint export, document
-  conversion menu, table creation helper, spreadsheet export
+  conversion menu, table creation helper, spreadsheet export
-\item
+\item
-  \textbf{v1.1.0} - Added Excel/ODS spreadsheet export, updated author
+  \textbf{v1.1.0} - Added Excel/ODS spreadsheet export, updated author
-  information, renamed to PanConverter
+  information, renamed to PanConverter
-\item
+\item
-  \textbf{v1.0.0} - Initial release with basic markdown editing, themes,
+  \textbf{v1.0.0} - Initial release with basic markdown editing, themes,
-  and Pandoc export
+  and Pandoc export
-\end{itemize}
+\end{itemize}
-
+
-\hypertarget{known-issues}{%
+\hypertarget{known-issues}{%
-\subsection{Known Issues}\label{known-issues}}
+\subsection{Known Issues}\label{known-issues}}
-
+
-\begin{itemize}
+\begin{itemize}
-\tightlist
+\tightlist
-\item
+\item
-  AppImage may require \texttt{-\/-no-sandbox} flag on some Linux
+  AppImage may require \texttt{-\/-no-sandbox} flag on some Linux
-  systems
+  systems
-\item
+\item
-  Windows/Mac builds require platform-specific build environments
+  Windows/Mac builds require platform-specific build environments
-\item
+\item
-  Large files may cause performance issues
+  Large files may cause performance issues
-\end{itemize}
+\end{itemize}
-
+
-\hypertarget{contributing}{%
+\hypertarget{contributing}{%
-\subsection{Contributing}\label{contributing}}
+\subsection{Contributing}\label{contributing}}
-
+
-Contributions are welcome! Please feel free to submit a Pull Request to
+Contributions are welcome! Please feel free to submit a Pull Request to
-the \href{https://github.com/amitwh/pan-converter}{GitHub repository}.
+the \href{https://github.com/amitwh/pan-converter}{GitHub repository}.
-
+
-\hypertarget{license}{%
+\hypertarget{license}{%
-\subsection{License}\label{license}}
+\subsection{License}\label{license}}
-
+
-MIT License - see LICENSE file for details.
+MIT License - see LICENSE file for details.
-
+
-\hypertarget{author}{%
+\hypertarget{author}{%
-\subsection{Author}\label{author}}
+\subsection{Author}\label{author}}
-
+
-\textbf{Amit Haridas} -
+\textbf{Amit Haridas} -
-\href{mailto:amit.wh@gmail.com}{\nolinkurl{amit.wh@gmail.com}}
+\href{mailto:amit.wh@gmail.com}{\nolinkurl{amit.wh@gmail.com}}
-
+
-\hypertarget{acknowledgments}{%
+\hypertarget{acknowledgments}{%
-\subsection{Acknowledgments}\label{acknowledgments}}
+\subsection{Acknowledgments}\label{acknowledgments}}
-
+
-\begin{itemize}
+\begin{itemize}
-\tightlist
+\tightlist
-\item
+\item
-  Built with \href{https://www.electronjs.org/}{Electron}
+  Built with \href{https://www.electronjs.org/}{Electron}
-\item
+\item
-  Markdown parsing by \href{https://marked.js.org/}{marked}
+  Markdown parsing by \href{https://marked.js.org/}{marked}
-\item
+\item
-  Export functionality powered by \href{https://pandoc.org/}{Pandoc}
+  Export functionality powered by \href{https://pandoc.org/}{Pandoc}
-\item
+\item
-  Syntax highlighting by \href{https://highlightjs.org/}{highlight.js}
+  Syntax highlighting by \href{https://highlightjs.org/}{highlight.js}
-\item
+\item
-  Spreadsheet export by \href{https://www.npmjs.com/package/xlsx}{XLSX}
+  Spreadsheet export by \href{https://www.npmjs.com/package/xlsx}{XLSX}
-\item
+\item
-  HTML sanitization by
+  HTML sanitization by
-  \href{https://www.npmjs.com/package/dompurify}{DOMPurify}
+  \href{https://www.npmjs.com/package/dompurify}{DOMPurify}
-\end{itemize}
+\end{itemize}

README.md

@@ -1,165 +1,228 @@
-# MarkdownConverter
+<p align="center">
-
+  <img src="assets/markdown-converter-assets/logo-horizontal.svg" alt="Markdown Converter" width="420">
-A powerful cross-platform Markdown editor and document converter powered by Pandoc, built with Electron. 100% open-source with no proprietary dependencies.
+</p>
-
+
-## Features
+# MarkdownConverter
-
+
-### Markdown Editor
+A powerful cross-platform Markdown editor and document converter powered by Pandoc, built with Electron. 100% open-source with no proprietary dependencies.
-<img width="1920" height="1032" alt="image" src="https://github.com/user-attachments/assets/5f53ba94-7663-47c3-b12b-b7b8bd2645aa" />
+
-- **Multi-tab editing** - Work on multiple files simultaneously
+## Features
-- **Live preview** - Real-time markdown rendering with syntax highlighting
+
-- **Dynamic splitter** - Drag to resize editor and preview panes
+### Markdown Editor
-- **25+ themes** - Light and dark themes including Atom One Light, Dracula, Nord, Sepia, and more
+<img width="1920" height="1032" alt="image" src="https://github.com/user-attachments/assets/5f53ba94-7663-47c3-b12b-b7b8bd2645aa" />
-- **Find & Replace** - Search and replace with regex support
+- **Multi-tab editing** - Work on multiple files simultaneously
-- **Line numbers** - Toggle line numbers in the editor
+- **Live preview** - Real-time markdown rendering with syntax highlighting
-- **Auto-save** - Automatic saving every 30 seconds
+- **Dynamic splitter** - Drag to resize editor and preview panes
-- **Math support** - KaTeX integration for mathematical expressions
+- **25+ themes** - Light and dark themes including Atom One Light, Dracula, Nord, Sepia, and more
-
+- **Find & Replace** - Search and replace with regex support
-### PDF Viewer & Editor
+- **Line numbers** - Toggle line numbers in the editor
-<img width="1920" height="1032" alt="image" src="https://github.com/user-attachments/assets/f10f62be-af3d-496e-81df-37ab4f91abfd" />
+- **Auto-save** - Automatic saving every 30 seconds
-
+- **Math support** - KaTeX integration for mathematical expressions
-- **Built-in PDF viewer** - Open and view PDF files directly in the app
+
-- **Page navigation** - Navigate pages with keyboard or buttons
+### PDF Viewer & Editor
-- **Zoom controls** - Zoom in/out, fit to width, fit to page
+<img width="1920" height="1032" alt="image" src="https://github.com/user-attachments/assets/f10f62be-af3d-496e-81df-37ab4f91abfd" />
-- **Rotation** - Rotate pages left or right
+
-- **PDF Editor tools**:
+- **Built-in PDF viewer** - Open and view PDF files directly in the app
-  - Merge multiple PDFs
+- **Page navigation** - Navigate pages with keyboard or buttons
-  - Split PDFs by page range
+- **Zoom controls** - Zoom in/out, fit to width, fit to page
-  - Compress PDFs
+- **Rotation** - Rotate pages left or right
-  - Rotate pages
+- **PDF Editor tools**:
-  - Delete pages
+  - Merge multiple PDFs
-  - Reorder pages
+  - Split PDFs by page range
-  - Add watermarks
+  - Compress PDFs
-  - Password protection
+  - Rotate pages
-  - Remove passwords
+  - Delete pages
-  - Set permissions
+  - Reorder pages
-
+  - Add watermarks
-### Export Options
+  - Password protection
-- **PDF** - Export to PDF with customizable page sizes and orientation
+  - Remove passwords
-- **DOCX** - Standard and Enhanced (template-based) Word export
+  - Set permissions
-- **ODT** - OpenDocument format
+
-- **HTML** - Web-ready HTML export
+### Export Options
-- **PowerPoint** - PPTX presentation export
+- **PDF** - Export to PDF with customizable page sizes and orientation
-- **EPUB** - E-book format
+- **DOCX** - Standard and Enhanced (template-based) Word export
-- **LaTeX** - Academic document format
+- **ODT** - OpenDocument format
-- **RTF** - Rich Text Format
+- **HTML** - Web-ready HTML export
-
+- **PowerPoint** - PPTX presentation export
-### Advanced Features
+- **EPUB** - E-book format
-- **Custom headers & footers** - Add headers/footers to exports with dynamic fields
+- **LaTeX** - Academic document format
-- **Page size configuration** - A3, A4, A5, B4, B5, Letter, Legal, Tabloid, or custom sizes
+- **RTF** - Rich Text Format
-- **Batch conversion** - Convert entire folders of markdown files
+- **Export themes** - Five visual styles (Modern, Classic, Sepia, Minimal, Elegant) for PDF and Word exports — recolored headings, links, and fonts
-- **ASCII Art Generator** - Create text banners and diagrams
+
-- **Word templates** - Use custom Word templates for enhanced exports
+### Advanced Features
-- **Import documents** - Import from 30+ formats (DOCX, PDF, HTML, etc.)
+- **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
-## Installation
+- **Batch conversion** - Convert entire folders of markdown files
-
+- **ASCII Art Generator** - Create text banners and diagrams
-### Prerequisites
+- **Word templates** - Use custom Word templates for enhanced exports
-- [Node.js](https://nodejs.org/) (v16 or later)
+- **Import documents** - Import from 30+ formats (DOCX, PDF, HTML, etc.)
-- [Pandoc](https://pandoc.org/installing.html) (required for export functionality)
+- **MarkItDown import** - Any file → Markdown via [Microsoft MarkItDown](https://github.com/microsoft/markitdown): PDF, DOCX, PPTX, XLSX, Outlook .msg, EPUB, images, ZIP (audio/OCR with the `[all]` extras)
-
+- **Excel export** - Markdown tables to native .xlsx workbooks (one sheet per table)
-### Install Dependencies
+- **AI Assistant** - Multi-provider AI help (OpenAI/Anthropic/Ollama/LM Studio): chat panel, summarize/improve/translate commands, grammar proofreading
-```bash
+- **Inline comments** - Anchor-based document comments in `.comments/` sidecars with F8 navigation
-npm install
+- **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
-### Run the Application
+- **Vim mode & snippet expansion** - Vim keybindings toggle; Tab expands saved snippets
-```bash
+- **Quick Note** - Global scratchpad (Ctrl+Alt+Q) that appends to `notes/quick-notes.md`
-npm start
+- **Real PDF encryption** - Password protection, removal, and permissions actually work
-```
+- **Offline math & diagrams** - KaTeX bundled locally; PlantUML renders locally when the CLI is installed
-
+
-### Build for Distribution
+## Installation
-```bash
+
-# Windows
+### Prerequisites
-npm run build:win
+- [Node.js](https://nodejs.org/) (v16 or later)
-
+- [Pandoc](https://pandoc.org/installing.html) (required for export functionality)
-# macOS
+- Optional: [MarkItDown](https://github.com/microsoft/markitdown) (`pip install "markitdown[all]"`) for any-file → Markdown import
-npm run build:mac
+
-
+### Install Dependencies
-# Linux
+```bash
-npm run build:linux
+npm install
-```
+```
-
+
-## Keyboard Shortcuts
+### Run the Application
-
+```bash
-| Action | Shortcut |
+npm start
-|--------|----------|
+```
-| New File | Ctrl+N |
+
-| Open File | Ctrl+O |
+### Build for Distribution
-| Open PDF | Ctrl+Shift+O |
+```bash
-| Save | Ctrl+S |
+# Windows
-| Save As | Ctrl+Shift+S |
+npm run build:win
-| Export | Ctrl+E |
+
-| Print | Ctrl+P |
+# macOS
-| Find | Ctrl+F |
+npm run build:mac
-| Undo | Ctrl+Z |
+
-| Redo | Ctrl+Shift+Z |
+# Linux
-| New Tab | Ctrl+T |
+npm run build:linux
-| Close Tab | Ctrl+W |
+```
-| Toggle Preview | Ctrl+Shift+P |
+
-| Zoom In | Ctrl+Shift++ |
+## Keyboard Shortcuts
-| Zoom Out | Ctrl+Shift+- |
+
-
+| Action | Shortcut |
-## Themes
+|--------|----------|
-
+| New File | Ctrl+N |
-### Light Themes
+| Open File | Ctrl+O |
-- Atom One Light (Default)
+| Open PDF | Ctrl+Shift+O |
-- GitHub Light
+| Save | Ctrl+S |
-- Light
+| Save As | Ctrl+Shift+S |
-- Solarized Light
+| Export | Ctrl+E |
-- Gruvbox Light
+| Print | Ctrl+P |
-- Ayu Light
+| Find | Ctrl+F |
-- Sepia
+| Undo | Ctrl+Z |
-- Paper
+| Redo | Ctrl+Shift+Z |
-- Rose Pine Dawn
+| New Tab | Ctrl+T |
-- Concrete Light
+| Close Tab | Ctrl+W |
-
+| Toggle Preview | Ctrl+Shift+V |
-### Dark Themes
+| Zoom In | Ctrl+Shift++ |
-- Dark
+| Zoom Out | Ctrl+Shift+- |
-- One Dark
+| Command Palette | Ctrl+Shift+P |
-- Dracula
+| Zen Mode | F11 |
-- Nord
+| Writing Analytics | Ctrl+Shift+A |
-- Monokai
+| Quick Note | Ctrl+Alt+Q |
-- Material
+| Universal Converter | Ctrl+Shift+C |
-- Gruvbox Dark
+| Table Generator | Ctrl+Shift+T |
-- Tokyo Night
+| ASCII Art Generator | Ctrl+Shift+A |
-- Palenight
+| Next Comment | F8 |
-- Ayu Dark
+| Add Comment at Cursor | Ctrl+Alt+M |
-- Ayu Mirage
+
-- Oceanic Next
+## Themes
-- Cobalt2
+
-- Concrete Dark
+### Light Themes
-- Concrete Warm
+- Atom One Light (Default)
-
+- GitHub Light
-## PDF Viewer
+- Light
-
+- Solarized Light
-Open PDF files directly in MarkdownConverter:
+- Gruvbox Light
-- **File > Open PDF** or **Ctrl+Shift+O**
+- Ayu Light
-- Navigate pages with arrow buttons or page input
+- Sepia
-- Zoom controls: +/- buttons, Fit Width, Fit Page
+- Paper
-- Rotate pages left or right
+- Rose Pine Dawn
-- Close PDF to return to editor
+- Concrete Light
-
+
-## Open Source
+### Dark Themes
-
+- Dark
-MarkdownConverter is 100% open-source. All dependencies are permissively licensed:
+- One Dark
-- **Electron** - MIT License
+- Dracula
-- **pdf-lib** - MIT License
+- Nord
-- **pdfjs-dist** - Apache 2.0 License
+- Monokai
-- **marked** - MIT License
+- Material
-- **highlight.js** - BSD 3-Clause License
+- Gruvbox Dark
-- **dompurify** - Apache 2.0/MIT License
+- Tokyo Night
-- **docx** - MIT License
+- Palenight
-- **xlsx** - Apache 2.0 License (SheetJS Community Edition)
+- Ayu Dark
-
+- Ayu Mirage
-## License
+- Oceanic Next
-
+- Cobalt2
-MIT License - see LICENSE file for details.
+- Concrete Dark
-
+- Concrete Warm
-## Author
+
-
+## PDF Viewer
-Amit Haridas (amit.wh@gmail.com)
+
-
+Open PDF files directly in MarkdownConverter:
-## Version
+- **File > Open PDF** or **Ctrl+Shift+O**
-
+- Navigate pages with arrow buttons or page input
-v3.0.0
+- Zoom controls: +/- buttons, Fit Width, Fit Page
+- 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:
+- **Electron** - MIT License
+- **pdf-lib** - MIT License
+- **pdfjs-dist** - Apache 2.0 License
+- **marked** - MIT License
+- **highlight.js** - BSD 3-Clause License
+- **dompurify** - Apache 2.0/MIT License
+- **docx** - MIT License
+- **xlsx** - Apache 2.0 License (SheetJS Community Edition)
+
+## License
+
+MIT License - see LICENSE file for details.
+
+## Author
+
+Amit Haridas (amit.wh@gmail.com)
+
+## Version
+
+v4.7.1

SOURCES.md

@@ -0,0 +1,55 @@
+# 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

@@ -0,0 +1,108 @@
+# 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

@@ -1,166 +1,369 @@
-# PanConverter - Updates & Changelog
+# PanConverter - Updates & Changelog
-
+
-## Version 2.1.0 (December 14, 2025)
+## Version 4.7.1 (2026-09-05)
-
+
-### 🎨 UI/UX Improvements
+### New: Export Themes (Word + PDF)
-
+- Theme picker in the export dialog (basic and advanced mode) for PDF and DOCX:
-#### Subtle & Small Preview Popout Button
+  **Default (Pandoc), Modern, Classic, Sepia, Minimal, Elegant**
-- Redesigned popout button with minimalist aesthetic
+- PDF: LaTeX header recolors/reformats headings + links (xcolor/titlesec,
-- Removed border for cleaner appearance
+  core-TeX packages only); DOCX: styles.xml surgery recolors Heading1-6/Title/
-- Reduced size: 11px font, 2px×6px padding (previously 14px font, 4px×8px padding)
+  Subtitle/Hyperlink and swaps heading/body fonts
-- Added opacity transition: 50% when idle, 100% on hover
+- Themes persist in export presets; unknown ids in old presets fall back to
-- Subtle background effect on hover instead of heavy border styling
+  Default instead of failing the export
-- **File**: `src/styles.css:195-211`
+
-
+### Branding
-#### Simplified Table Headers in Preview
+- New M↓ brand identity: app icons, favicons, tray icon, welcome mark,
-- Removed gradient background from table headers in modern theme
+  README wordmark (vector kit in assets/markdown-converter-assets/)
-- Changed from `var(--primary-gradient)` (purple gradient) to simple light gray (#f0f0f0)
+
-- Updated text color to dark (#333333) for better readability
+### Fixes
-- Clean, professional appearance matching standard themes
+- **Windows**: pdfjs text/image extraction failed on Windows —
-- **File**: `src/styles-modern.css:445-449`
+  standardFontDataUrl is now a proper file:// URL (raw backslash paths
-
+  failed pdfjs's trailing-slash URL validation)
-### 📥 Enhanced Import Capabilities
+- **Windows**: sharp temp-file cleanup (EPERM retry), path-separator test
-
+  assertions, and pdfjs test timeouts fixed — the Windows CI job is green
-#### Comprehensive Format-to-Markdown Conversion
+- FiraCode tooling downloads pinned to the immutable 6.2 release;
-Dramatically expanded the "Import Document" feature to support 30+ file formats:
+  .gitattributes stops CRLF checkout rewriting hash-pinned files
-
+- macOS pandoc extractor locates the binary in the archive (layout changed)
-**Supported Formats:**
+- Packaged apps resolve bundled pandoc/markitdown next to the executable
-- **Documents**: DOCX, ODT, RTF, HTML, HTM, TEX, EPUB, PDF, TXT
+  (resourcesPath lookup was wrong since 4.5 — packaged builds silently used
-- **Presentations**: PPTX, ODP
+  system pandoc)
-- **Markup Languages**: RST, Textile, MediaWiki, Org-mode, AsciiDoc, TWiki, OPML
+
-- **E-book Formats**: EPUB, FB2
+---
-- **LaTeX Formats**: TEX, LATEX, LTX
+
-- **Web Formats**: HTML, HTM, XHTML
+## Version 4.7.0 (2026-09-05)
-- **Wiki Formats**: MediaWiki, DokuWiki, TikiWiki, TWiki
+
-- **Data Formats**: CSV, TSV, JSON
+### Bundling & Legal Compliance
-
+- **MarkItDown is now bundled**: `npm run bundle:markitdown` freezes Microsoft's
-**Format-Specific Optimizations:**
+  markitdown (MIT) + embedded Python runtime into a single ~75MB per-platform
-- PDF text extraction with XeLaTeX engine
+  binary (`bin/<platform>/markitdown`) via PyInstaller (ML extras excluded);
-- CSV/TSV automatic table conversion
+  the app prefers the bundled binary and falls back to system installs
-- JSON structure handling
+- Packaging copies the bundled markitdown for Windows/macOS/Linux alongside Pandoc
-- Improved error messages with format hints
+- **THIRD-PARTY-NOTICES.md** — full license inventory of everything distributed
-
+  (bundled binaries, npm runtime deps, fonts, embedded Python packages)
-**Access**: File → Import Document (Ctrl+I)
+- **SOURCES.md** — GPL §3(b) written source offer for Pandoc / FFmpeg (GPL build) /
-**File**: `src/main.js:1933-1994`
+  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,
-### 🎨 Exhaustive ASCII Art Generator
+  Apache-2.0, OFL-1.1, PSF-Python
-
+- **Help → Third-Party Notices & Licenses** — in-app viewer for both documents
-#### 5 New Text Banner Styles
+- **download-tools.js** now SHA-256 pins and verifies every downloaded artifact
-Complete alphabet (A-Z) and numbers (0-9) support for all styles:
+  (post-download and against the cache on every run; hard-fails on mismatch)
-
+- README gains a "Bundled Dependencies, Legal Notices & Credits" section
-1. **Standard** - Classic ASCII art with slashes and underscores
+- Large optional tools intentionally NOT bundled (documented): LibreOffice,
-2. **Banner** - Large format using # characters (7-line height)
+  MiKTeX/TeX Live, ImageMagick, PlantUML+JRE, Calibre
-3. **Block** - Modern Unicode block characters (█ ╔ ╗ ═ ║)
+
-4. **Bubble** - Circular bubble letters (Ⓐ Ⓑ Ⓒ)
+---
-5. **Digital** - Digital display style (▄ ▀ ▐ ▌)
+
-
+## Version 4.6.1 (2026-09-05)
-**File**: `src/renderer.js:3397-3537`
+
-
+### New Features
-#### 19 Professional ASCII Templates
+- **MarkItDown import** — "File → Import with MarkItDown (Any Format)…" embeds
-Organized into 4 categories with expanded options:
+  Microsoft's [markitdown](https://github.com/microsoft/markitdown) (MIT) as an
-
+  any-file → Markdown path: PDF, DOCX, PPTX, XLSX, Outlook .msg/.eml, EPUB,
-**Arrows & Flow (4 templates):**
+  images, CSV/JSON/XML, ZIP; audio transcription and OCR with the `[all]` extras
-- Arrow Right - Horizontal flow indicators
+  - Command auto-resolution: `markitdown` binary, then `python -m markitdown` /
-- Arrow Down - Vertical flow indicators
+    `python3 -m markitdown` (probed once, cached)
-- Decision - Binary decision diagrams
+  - Same SEC-1 argv discipline as Pandoc (execFile only, paths never through a shell),
-- Process Flow - Multi-step process visualization
+    50MB input cap, 120s timeout, path-sanitized errors that surface markitdown's
-
+    actionable `pip install 'markitdown[...]'` hints
-**Diagrams & Charts (6 templates):**
+  - Output written next to the source as `<name>.md` (numeric suffix instead of
-- Flowchart - Advanced flowchart with decision branches and loops
+    overwriting) and opened in a new tab; `markitdown:available` / `markitdown:convert`
-- Sequence - Sequence diagrams for User-System-Database interactions
+    IPC for future renderer flows
-- Network - Server-client network topology
+- **AI Assistant: Anthropic-compatible provider** — any base URL speaking the
-- Hierarchy - Organizational tree structures
+  Anthropic messages schema (LiteLLM proxies, Bedrock gateways, local servers);
-- Timeline - Milestone visualization with dates
+  x-api-key + Bearer auth, keyless proxies supported, tolerates bases with or
-- Table Simple - Basic table template with borders
+  without a trailing `/v1`
-
+
-**Boxes & Containers (4 templates):**
+### Bug Fixes
-- Header - Section header with decorative borders
+- File → Open PDF crashed the PDF editor (null operation matched no section; now
-- Note Box - Important notes with rounded corners (┏━━┓)
+  defaults to Merge)
-- Warning Box - Warning messages with bold borders (╔═══╗)
+- Backlinks panel required the wrong module path (failed at registration)
-- Info Box - Information boxes with subtle styling (╭───╮)
+- writing-studio engines/panels now await their IPC-backed settings/file backends
-
+  (eliminates `JSON.parse("[object Promise]")` crashes)
-**Decorative Elements (6 templates):**
+- Manuscript panel's window.prompt (unsupported in Electron) replaced with an
-- Divider - Horizontal section separator (═══)
+  inline dialog; collaboration comment store made async to match its IO
-- Separator Fancy - Elegant rounded divider
+
-- Brackets - Japanese-style brackets 【 】
+---
-- Banner Stars - Star-bordered banners
+
-- Checklist - Task lists with ✓ checkmarks
+## Version 4.6.0 (2026-09-05)
-- Progress Bar - Visual progress indicators
+
-
+### New Features
-**Features:**
+
-- All ASCII art automatically wrapped in code blocks for proper rendering
+#### AI Assistant Plugin (multi-provider)
-- Preserved formatting in markdown preview and all export formats
+- Chat sidebar panel with rolling conversation history and insert-reply-into-document
-- Categorized template selection interface
+- Providers: OpenAI, Anthropic, Ollama, LM Studio, and any OpenAI-compatible endpoint
-- Real-time preview generation
+- 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
-**Access**: Tools → ASCII Art Generator
+- Answers the writing-studio `ai:analyze` contract, finally enabling the Proofread panel
-**Files**: `src/renderer.js:3513-3671`, `src/index.html:427-466`
+
-
+#### Collaboration Plugin (inline comments)
-### 📝 Technical Improvements
+- Anchor-based comments stored in `.comments/` sidecar files (never exported, never committed)
-
+- Comments sidebar panel: add at cursor, list, resolve, delete, jump to anchor
-- Enhanced ASCII art detection in Word template exporter
+- Drift detection flags moved/edited anchors; F8 navigates to the next open comment
-- Improved monospace font rendering across all export formats
+
-- Better code block preservation in PDF and Word exports
+#### Local Knowledge Base (wiki-links + backlinks)
-- Optimized template categorization and organization
+- `[[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
-### 🔧 Files Modified
+- Backlinks sidebar panel scans the folder (bounded BFS) for documents linking to the current one
-
+
-- `src/styles.css` - Preview popout button styling
+#### Crash Recovery / Session Restore
-- `src/styles-modern.css` - Table header simplification
+- Open tabs (paths + unsaved buffer content) snapshotted to localStorage, debounced on edits, on tab changes, on unload, and once a minute
-- `src/main.js` - Enhanced import function, version update
+- Restore prompt on launch with per-tab restore, clean-fresh option, and 2MB content budget
-- `src/renderer.js` - ASCII art generator enhancements
+
-- `src/index.html` - ASCII template UI organization
+#### Document Version History
-- `package.json` - Version bump to 2.1.0
+- 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
-
+
-## Version 2.0.0 (Previous Release)
+#### Editor
-
+- Vim keybindings (View → Vim Mode, persisted, live toggle via CodeMirror Compartment)
-### Major Features
+- Snippet Tab-expansion: type a snippet name and press Tab to insert it
-- Export Profiles - Save and reuse export configurations
+- Zen Mode word-goal setter (the HUD progress bar finally has UI)
-- Mermaid.js diagram support
+
-- Command Palette (Ctrl+Shift+P)
+#### Export / Conversion
-- GitHub Light/Dark preview themes
+- **Real PDF encryption**: pdf-lib swapped for @cantoo/pdf-lib — encrypt/decrypt/permissions now actually work (UI auto-enables via the capability probe)
-- Table Generator
+- **XLSX export**: markdown tables → native Excel workbook, one sheet per table (no Pandoc needed)
-- ASCII Art Generator (basic)
+- **ODT headers/footers + page size**: real ODF styles.xml patching replaces the empty stub
-- Resizable Preview Pane
+- **Local PlantUML rendering**: diagrams render on-machine via the `plantuml` CLI when installed; plantuml.com stays as fallback
-- Pop-out Preview Window
+- **KaTeX bundled locally** (CSS + fonts): math renders offline, no CDN calls
-- Configurable page sizes (A3-A5, B4-B5, Letter, Legal, Tabloid, Custom)
+- Writing heatmap (GitHub-style 30-day grid) in the writing-studio Goals panel
-- Custom Headers & Footers for exports
+
-- Enhanced PDF and Word export with templates
+#### Platform
-- 22 beautiful themes
+- Quick Note global scratchpad (Ctrl+Alt+Q, works when unfocused; appends to `notes/quick-notes.md`)
-
+- Deep link protocol `markdownconverter://open?path=…`
-### Core Capabilities
+- REPL confirmation dialog before first code execution per language per session (unsandboxed-execution guard rail)
-- Cross-platform markdown editor with live preview
+- Writing-studio's four sidebar panels (Manuscript/Goals/Snapshots/Proofread) are now actually wired with rail icons
-- Universal document conversion (30+ formats)
+- Plugin sidebar panels get automatic rail icons via `registerPanel({icon})`
-- PDF Editor (merge, split, compress, rotate, watermark, encrypt)
+
-- Batch file conversion
+### Bug Fixes
-- File association support
+- `Ctrl+Shift+P` collision: PDF (Enhanced) export now `Ctrl+Alt+Shift+P`; Command Palette keeps `Ctrl+Shift+P`
-- Advanced export options
+- Universal Converter's Pandoc tool no longer always reports "not installed" (`checkConverterAvailable` gained a pandoc case with bundled-binary check)
-- Multi-tab interface
+- 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
-
+
-## Installation & Usage
+### Security
-
+- AI provider requests carry size caps (200KB prompt), timeouts (120s), and user-safe error surfaces
-### Prerequisites
+- Version-history reads validate ids against traversal; history listing requires a valid document path
-- **Pandoc** - Required for document conversion
+- PlantUML local rendering removes the diagram-text exfiltration path when a local CLI exists (CVE-MC-007 follow-up)
-- **Optional**: LibreOffice, ImageMagick, FFmpeg for universal converter
+
-
+### Tests
-### Download
+- New suites: OdtStyling, AiProviders, ai-assistant prompts, collaboration comment-store, wiki-links/backlinks, session-store, XlsxExporter, VersionHistory
-Get the latest release from: https://github.com/amitwh/pan-converter/releases
+- PDFOperations encryption tests rewritten for the real-encryption reality
-
+
-### Supported Platforms
+---
-- Windows (x64)
+
-- Linux (AppImage, .deb, .snap)
+## Version 4.0.0 (2026-03-04)
-- macOS (planned)
+
-
+### 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
-## Contributing
+- **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
-Contributions are welcome! Please see [CLAUDE.md](CLAUDE.md) for development guidelines.
+
-
+### New Features
-**Author**: Amit Haridas (amit.wh@gmail.com)
+- Print Preview dialog with paper size, orientation, margins, scale, and page range controls
-**License**: MIT
+- Image paste from clipboard and drag-drop support with auto-save to assets folder
-**Repository**: https://github.com/amitwh/pan-converter
+- Document templates library (10 templates: blog post, meeting notes, tech spec, changelog, README, project plan, API docs, tutorial, release notes, comparison)
+- Markdown extensions: footnotes, admonitions (note/warning/tip/danger/info), and [[toc]] table of contents
+- PlantUML diagram rendering alongside Mermaid
+- Welcome tab with onboarding and "What's New" feature showcase
+- System spell checking with context menu suggestions and dictionary support
+- Enhanced status bar with word count, character count, line/column, encoding, and language mode
+- Grouped toolbar with visual section separators
+- Breadcrumb bar showing current file path
+
+### New Export/Import Formats
+- Reveal.js slides (.html)
+- Beamer slides (.pdf)
+- Confluence/Jira wiki markup (.txt)
+- MOBI e-books (via Calibre)
+- 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
+- pdfkit: 0.14 to 0.17
+- 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
+
+---
+
+## Version 2.1.0 (December 14, 2025)
+
+### 🎨 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)
+- Added opacity transition: 50% when idle, 100% on hover
+- Subtle background effect on hover instead of heavy border styling
+- **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
+- Clean, professional appearance matching standard themes
+- **File**: `src/styles-modern.css:445-449`
+
+### 📥 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
+- **E-book Formats**: EPUB, FB2
+- **LaTeX Formats**: TEX, LATEX, LTX
+- **Web Formats**: HTML, HTM, XHTML
+- **Wiki Formats**: MediaWiki, DokuWiki, TikiWiki, TWiki
+- **Data Formats**: CSV, TSV, JSON
+
+**Format-Specific Optimizations:**
+- PDF text extraction with XeLaTeX engine
+- CSV/TSV automatic table conversion
+- JSON structure handling
+- Improved error messages with format hints
+
+**Access**: File → Import Document (Ctrl+I)
+**File**: `src/main.js:1933-1994`
+
+### 🎨 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
+2. **Banner** - Large format using # characters (7-line height)
+3. **Block** - Modern Unicode block characters (█ ╔ ╗ ═ ║)
+4. **Bubble** - Circular bubble letters (Ⓐ Ⓑ Ⓒ)
+5. **Digital** - Digital display style (▄ ▀ ▐ ▌)
+
+**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
+- Hierarchy - Organizational tree structures
+- Timeline - Milestone visualization with dates
+- 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 【 】
+- Banner Stars - Star-bordered banners
+- Checklist - Task lists with ✓ checkmarks
+- 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
+- Real-time preview generation
+
+**Access**: Tools → ASCII Art Generator
+**Files**: `src/renderer.js:3513-3671`, `src/index.html:427-466`
+
+### 📝 Technical Improvements
+
+- Enhanced ASCII art detection in Word template exporter
+- Improved monospace font rendering across all export formats
+- Better code block preservation in PDF and Word exports
+- Optimized template categorization and organization
+
+### 🔧 Files Modified
+
+- `src/styles.css` - Preview popout button styling
+- `src/styles-modern.css` - Table header simplification
+- `src/main.js` - Enhanced import function, version update
+- `src/renderer.js` - ASCII art generator enhancements
+- `src/index.html` - ASCII template UI organization
+- `package.json` - Version bump to 2.1.0
+
+---
+
+## Version 2.0.0 (Previous Release)
+
+### Major Features
+- Export Profiles - Save and reuse export configurations
+- Mermaid.js diagram support
+- Command Palette (Ctrl+Shift+P)
+- GitHub Light/Dark preview themes
+- Table Generator
+- ASCII Art Generator (basic)
+- Resizable Preview Pane
+- Pop-out Preview Window
+- Configurable page sizes (A3-A5, B4-B5, Letter, Legal, Tabloid, Custom)
+- Custom Headers & Footers for exports
+- Enhanced PDF and Word export with templates
+- 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)
+- Batch file conversion
+- File association support
+- Advanced export options
+- Multi-tab interface
+
+---
+
+## 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)
+
+---
+
+## Contributing
+
+Contributions are welcome! Please see [CLAUDE.md](CLAUDE.md) for development guidelines.
+
+**Author**: Amit Haridas (amit.wh@gmail.com)
+**License**: MIT
+**Repository**: https://github.com/amitwh/pan-converter

assets/fonts/FiraCode-LICENSE.txt

@@ -0,0 +1,93 @@
+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

@@ -0,0 +1,93 @@
+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.