feat: localize commercial-legal plugin for Taiwan (ROC) jurisdiction

[tonnychiulab]

• 替換管轄區假設：美國法 → 中華民國法（大陸法系）
• 更新法律引用框架：民法債編、個資法、勞基法等
• 輸出語言改為繁體中文
• 新增台灣常見合約條款範本
• 新增個資法跨境傳輸合規要點
• 備份原始 CLAUDE.md 為 CLAUDE.md.orig

[github-actions]

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• Opener: @tonnychiulab
• Commit authors: @tonny0955

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