Release v1.5.0: Enhanced Features and Open Source Compatibility

Major improvements including optional advanced export options, removed proprietary dependencies for better open-source compatibility, and comprehensive new features for enhanced user experience.
🔧 Export Functions & Advanced Options:
• Fixed export function issues after advanced options integration
• Added optional advanced export checkbox (unchecked by default)
• Clean UI separation between simple and advanced export workflows
🏗️ Open Source Compatibility:
• Removed bundled Pandoc binaries - requires system installation
• Replaced proprietary XLSX with open-source CSV export
• Eliminated licensing concerns with bundled dependencies
✨ Advanced User Experience Features:
• Auto-save system with visual indicators every 30 seconds
• Enhanced document statistics (lines, paragraphs, sentences, reading time)
• Recent files menu with persistent storage (last 10 files)
• Mathematical expression support with KaTeX rendering
• Improved export dialog with better user experience
📚 Updated documentation with new dependency requirements and features
🤖 Generated with [Claude Code](https://claude.ai/code)

src/index.html

@@ -122,8 +122,20 @@
                     <button id="export-dialog-close" title="Close">×</button>
                 </div>
                 <div class="export-dialog-body">
-                    <div class="export-section">
-                        <label for="export-template">Template:</label>
+                    <!-- Simple/Advanced Export Toggle -->
+                    <div class="export-section export-mode-toggle">
+                        <label class="checkbox-label">
+                            <input type="checkbox" id="advanced-export-toggle">
+                            <span class="checkmark"></span>
+                            Show Advanced Options
+                        </label>
+                        <small class="export-help">Enable for templates, metadata, bibliography, and advanced PDF settings</small>
+                    </div>
+
+                    <!-- Advanced Export Options (hidden by default) -->
+                    <div id="advanced-export-options" class="advanced-options hidden">
+                        <div class="export-section">
+                            <label for="export-template">Template:</label>
                         <select id="export-template">
                             <option value="default">Default</option>
                             <option value="custom">Custom (Browse...)</option>
@@ -203,6 +215,16 @@
                             <button id="browse-csl">Browse</button>
                         </div>
                     </div>
+                    </div> <!-- End advanced-export-options -->
+
+                    <!-- Basic Export Options (always visible) -->
+                    <div class="export-section basic-options">
+                        <label>Quick Export Settings:</label>
+                        <div class="checkbox-group">
+                            <label><input type="checkbox" id="basic-toc"> Include Table of Contents</label>
+                            <label><input type="checkbox" id="basic-number-sections"> Number Sections</label>
+                        </div>
+                    </div>
                 </div>
                 <div class="export-dialog-footer">
                     <button id="export-cancel">Cancel</button>