* feat: optimize AI rules with unified .rules.md and entry points
- Create .rules.md as the central AI coding rules file
- Add .copilot-rules.md as GitHub Copilot entry point
- Add CLAUDE.md as Claude AI entry point
- Incorporate principles from rustfs.com project
- Add three critical rules:
1. Use English for all code comments and documentation
2. Clean up temporary scripts after use
3. Only make confident modifications
* Update CLAUDE.md
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Co-authored-by: Cursor Agent <cursoragent@cursor.com>
