teps3105 3ddd7868b6 feat: add avatar metrics tracking feature (#111) ...

* feat: add avatar metrics tracking feature (#110)

Add AvatarMetrics dataclass for tracking avatar state snapshots

- Add AvatarMetrics dataclass for recording monthly snapshots
- Add metrics_history field to Avatar with opt-in tracking
- Implement automatic monthly snapshot recording in Simulator
- Add backward compatibility support for existing save files
- Set default tracking limit to 1200 months (100 years)
- Add comprehensive tests with 100% coverage
- Move documentation to specs directory with simplified chinese

* fix: convert Traditional Chinese comments to Simplified Chinese

修正程式碼中的繁體中文註解為簡體中文，以符合專案規範。

Fix Traditional Chinese comments to Simplified Chinese in codebase.

2026-01-30 23:07:45 +08:00

4.0 KiB

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