Add repair skill and refactor skill naming

[mikolalysenko]

Summary

• New repair skill — holistic dependency repair orchestrator that sequences /dep-cleanup, /dep-patch, and /dep-upgrade into a single workflow with three aggressiveness levels:
  • Conservative (Level 1): remove trivially unused deps + apply binary patches
  • Cautious (Level 2): Level 1 + propose ONE risky change for user approval
  • Full (Level 3): safe upgrades → aggressive cleanup → patching → risky major upgrades (skip and continue on failure)
• Skill renaming — skills now use category prefixes (dep-cleanup, dep-patch, dep-upgrade, research-inspect, research-scan) for clearer organization
• Remove audit skill — consolidated into research-scan
• Updated skill content — improved setup, dep-patch, dep-cleanup, research-scan skill docs
• Regenerated artifacts — README, AGENTS.md, marketplace.json, cursor plugin all in sync

Test plan

• ./scripts/publish.sh --check passes (all artifacts in sync)
• npm run test:structural passes (64/64 tests, 7 expected skills)
• README shows 4 category sections: Setup, Research, Dependency Management, Repair
• agents/AGENTS.md lists the repair skill
• CI workflow validates on PR (publish --check + structural tests)

🤖 Generated with Claude Code