feat: persist runtime skill metadata

[YYH211]

Summary

• add runtime skill metadata schemas to Skill versions and current Skill cache
• parse child SKILL.md metadata during create/import/copy/deploy and keep currentRuntimeSkills in sync
• show all runtime child skills to HelperBot via the pro submodule update

Tests

• cd packages/service && pnpm exec vitest run -c vitest.config.ts test/core/ai/skill/zipBuilder.test.ts test/core/ai/skill/controller.test.ts test/core/ai/sandbox/application/skillEdit/deploy.test.ts
• cd projects/app && pnpm exec vitest run -c vitest.config.ts test/api/core/ai/skill/import.invalidPackage.test.ts

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	16.45%	1356 / 8241
🔵	Statements	16.38%	1416 / 8644
🔵	Functions	14.49%	289 / 1994
🔵	Branches	13.38%	622 / 4648

File Coverage

No changed files found.

Generated in workflow #1235 for commit c799999 by the Vitest Coverage Report Action

[github-actions]

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🕒 Time: 2026-07-03 16:10:24 (UTC+8)

[github-actions]

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