Clarify README search discovery

[dd3ok]

Summary

• clarify the English and Korean README introductions with AgentSkills-compatible wording and core runtime names
• add English and Korean audience sections for users who need lightweight Markdown deferred-check tracking
• keep scheduler/reminder negative-scope language covered by tests

Metadata

• kept repository topics concise and added only ai-agent, claude-code, and markdown
• did not add GitHub Pages or profile README changes

Testing

• python -m unittest discover -s evals -p test_*.py
• python evals/check_release_metadata.py
• python evals/check_policy_markers.py
• python evals/check_semantic_cases.py
• python evals/check_skill_package.py
• git diff --check

[gemini-code-assist]

Code Review

This pull request updates the English and Korean README files to clarify the project's introduction and target audience, adds a corresponding unit test to verify these changes, and updates the changelog. The review feedback suggests a minor phrasing improvement in the Korean translation to maintain a professional tone.

Important

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[gemini-code-assist]

The phrase WATCHLIST.md가 맞습니다 (literally "WATCHLIST.md is correct") sounds a bit colloquial and literal in Korean technical documentation. Using a more professional and natural term like WATCHLIST.md가 적합합니다 (is suitable) or WATCHLIST.md가 제격입니다 (is ideal) would better align with the formal tone used throughout the rest of the document.

Suggested change

	AI agent workflow를 만들거나 운영하면서 scheduler, daemon, database, MCP server를 만들지 않고 deferred check, CI 후속 확인, 배포 검증, PR 확인, 티켓, 작업, 데이터 동기화, 이메일 후속 확인을 가벼운 Markdown 방식으로 추적해야 한다면 WATCHLIST.md가 맞습니다.
	AI agent workflow를 만들거나 운영하면서 scheduler, daemon, database, MCP server를 만들지 않고 deferred check, CI 후속 확인, 배포 검증, PR 확인, 티켓, 작업, 데이터 동기화, 이메일 후속 확인을 가벼운 Markdown 방식으로 추적해야 한다면 WATCHLIST.md가 적합합니다.