- Integrate CodeMirror for advanced code editing with syntax highlighting
- Support 20+ programming languages including JavaScript, TypeScript, Python, Java, Go, Rust, etc.
- Add JSON files to code file category for proper syntax highlighting
- Implement line numbers for both CodeMirror and search mode
- Add comprehensive editor features: code folding, auto-completion, bracket matching
- Maintain search functionality with line numbers in read-only mode
- Use dark theme to match project design system
- Ensure all code files are fully editable with professional IDE-like features
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