Update docs workflow configuration

[version-1]

Update Docs Workflow Configuration

Summary

Add Markdown code highlighting support and expand Workflow Configuration docs with front matter behavior and load timing.

主な変更点:

• Added Prism Markdown highlighting for md / markdown fenced code blocks.
• Documented WORKFLOW.md YAML front matter and its role as machine-readable orchestration configuration.
• Documented that workflows are resolved per project when queued work is evaluated and an agent run is prepared.

チケットへのリンク

ここはまだない

やったこと

• Updated docs/site/docusaurus.config.ts.
• Updated English and Japanese Workflow Configuration guide pages.

動作確認

• npm run build from docs/site
• Confirmed generated Agent Tutorial HTML contains tokenized language-md code blocks

レビュー & 動作確認 チェックリスト

• Markdown code blocks - md fenced blocks render with syntax highlighting.
• Workflow front matter docs - Front matter/body responsibilities and load timing are clear.
• Japanese docs parity - Japanese guide matches the English guide.

推奨テスト計画:

1. Run npm run build from docs/site.
2. Open Workflow Configuration in English and Japanese.
3. Open Agent Tutorial or Setup Guide and check md code block highlighting.

その他気になることや相談ごと

なし

Notes
Requested by: user