feat: Consolidate documentation into a single comprehensive guide

- Created `CONSOLIDATED_DOCS.md` to serve as the primary documentation source, integrating user and developer guides, API references, and troubleshooting sections.
- Updated `README.md` to reference the new consolidated documentation.
- Preserved existing documentation files for backward compatibility, including `USER_GUIDE.md`, `DEVELOPER_GUIDE.md`, and others.
- Enhanced navigation structure in `docs/README.md` to facilitate easier access to documentation.
- Implemented UI flickering fixes, including auto-save optimizations, debounced filter updates, and efficient tree updates to improve user experience.
- Added verification script `verify_docs_consolidation.py` to ensure successful documentation consolidation and integrity.

README.md

@@ -15,19 +15,23 @@ make test
 
 ## 📚 Documentation
 
-### 🎯 **For Users**
-- **[User Guide](USER_GUIDE.md)** - Complete features, keyboard shortcuts, and usage guide
-- **[Changelog](CHANGELOG.md)** - Version history and recent improvements
+### <EFBFBD> **All-in-One Guide**
+- **[📖 CONSOLIDATED DOCS](CONSOLIDATED_DOCS.md)** - **Complete documentation in one place (RECOMMENDED)**
 
-### 🛠️ **For Developers**
-- **[Developer Guide](DEVELOPER_GUIDE.md)** - Development setup, testing, and architecture
-- **[API Reference](API_REFERENCE.md)** - Technical documentation and system APIs
-- **[Recent Improvements](IMPROVEMENTS_SUMMARY.md)** - Latest enhancements and new features
+### 🎯 **Quick Access by Role**
+- **[👤 User Guide](USER_GUIDE.md)** - Complete features, keyboard shortcuts, and usage guide
+- **[🛠️ Developer Guide](DEVELOPER_GUIDE.md)** - Development setup, testing, and architecture
+- **[📋 Changelog](CHANGELOG.md)** - Version history and recent improvements
 
-### 📖 **Complete Navigation**
-- **[Documentation Index](docs/README.md)** - Comprehensive documentation navigation
+### <EFBFBD> **Specialized Topics**
+- **[🐛 UI Flickering Fix](UI_FLICKERING_FIX_SUMMARY.md)** - Latest performance improvements
+- **[🔧 API Reference](API_REFERENCE.md)** - Technical documentation and system APIs
+- **[✨ Recent Improvements](IMPROVEMENTS_SUMMARY.md)** - Latest enhancements and new features
 
-> 💡 **Getting Started**: New users should start with the [User Guide](USER_GUIDE.md), while developers should check the [Developer Guide](DEVELOPER_GUIDE.md).
+### 📖 **Documentation Hub**
+- **[📚 Documentation Index](docs/README.md)** - Complete documentation navigation
+
+> 💡 **Getting Started**: For the most comprehensive information, start with [CONSOLIDATED_DOCS.md](CONSOLIDATED_DOCS.md). For quick access, users can check the [User Guide](USER_GUIDE.md) and developers can check the [Developer Guide](DEVELOPER_GUIDE.md).
 
 ## ✨ Recent Major Updates (v1.9.5+)
 
@@ -37,6 +41,13 @@ make test
 - **Enhanced Keyboard Shortcuts**: Comprehensive shortcut system for all operations
 - **Modern Styling**: Card-style frames, professional form controls, responsive design
 
+### ⚡ Performance Improvements (Latest)
+- **UI Flickering Fix**: Eliminated flickering during table scrolling
+- **Debounced Updates**: 300ms debouncing for search/filter changes
+- **Smooth Scrolling**: Preserved scroll position during data updates
+- **Auto-save Optimization**: Non-intrusive background saving
+- **Reduced CPU Usage**: Optimized scroll and update operations
+
 ### 🧪 Testing Improvements
 - **Consolidated Test Suite**: Unified pytest-based testing structure
 - **Quick Test Categories**: Unit, integration, and theme-specific tests