🧹 Clean up codebase: Remove redundant files and consolidate documentation

## Repository Cleanup Summary

### 🗑️ **Files Removed (42% reduction in root directory)**
- **Development artifacts**: `__pycache__/`, `.pyc` files
- **Completed utilities**: `batch_rename.py`, `workflow_renamer.py` (served their purpose)
- **Redundant documentation**: `NAMING_CONVENTION.md`, `PERFORMANCE_COMPARISON.md`, `RENAMING_REPORT.md`
- **Temporary files**: `screen-1.png` (undocumented screenshot)

### 📄 **Documentation Consolidation**
- **README.md**: Completely rewritten as comprehensive documentation hub
  - Performance comparison table (700x improvement highlighted)
  - Consolidated naming convention guidelines
  - Complete setup and usage instructions
  - Technical architecture documentation
  - Clear deprecation notices for old system

### ⚠️ **Legacy System Deprecation**
- **generate_documentation.py**: Added prominent deprecation warnings
  - Interactive warning on script execution
  - Clear redirection to new FastAPI system
  - Performance comparison (71MB vs <100KB)
  - User confirmation required to proceed with legacy system

### 🛡️ **Quality Improvements**
- **`.gitignore`**: Added to prevent future development artifact commits
- **Professional structure**: Clean, focused repository layout
- **Clear migration path**: From 71MB HTML to modern API system
- **Better documentation**: Single source of truth in README.md

## Final Repository Structure
```
n8n-workflows/
├── README.md                 # Comprehensive documentation (NEW)
├── README_zh-hant.md        # Chinese translation
├── CLAUDE.md                # AI assistant context
├── .gitignore               # Prevent artifacts (NEW)
├── api_server.py            # Modern FastAPI system
├── workflow_db.py           # Database handler
├── setup_fast_docs.py       # Setup utility
├── generate_documentation.py # Legacy (with warnings)
├── import-workflows.sh      # Import utility
├── requirements.txt         # Dependencies
├── workflows.db            # SQLite database
├── static/                 # Frontend assets
└── workflows/              # 2,053 workflow JSON files
```

## Impact
- **Repository size**: Reduced clutter by removing 8 unnecessary files
- **Developer experience**: Clear documentation and setup instructions
- **Maintainability**: Eliminated completed one-time utilities
- **Professional appearance**: Clean, organized, purpose-driven structure
- **Future-proofing**: .gitignore prevents artifact accumulation

This cleanup transforms the repository from a collection of mixed tools into a
clean, professional codebase focused on the modern high-performance workflow
documentation system.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,47 @@
+# Python artifacts
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# IDE artifacts
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS artifacts
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+
+# Development artifacts
+*.log
+*.tmp
+temp/
+tmp/
+.cache/
+
+# Documentation artifacts (generated)
+workflow-documentation.html
+
+# Test files
+test_*.json
+*_test.json
+
+# Backup files
+*.bak
+*.backup