feat(skills): publish via npx skills add

[KemingHe]

Related

• https://github.com/vercel-labs/add-skill: deprecated CLI, now forwards to npx skills add
• https://github.com/vercel-labs/skills: active CLI, 6,300+ stars, supports 37+ agents including Cursor
• https://skills.sh: public skills directory for discoverability

Problem

Skills in KemingHe/common-devx are currently installed by manual copy-paste from the agent-skills/ directory into each consuming project. This requires knowing the repo exists, browsing the directory, and manually syncing updates. There is no versioned install or update path.

Proposed Solution

Restructure agent-skills/ to the skills/ path that the vercel-labs/skills CLI discovers automatically, so users can install and update skills via:

npx skills add KemingHe/common-devx

Required changes:

• Rename or symlink agent-skills/ to skills/ (CLI discovers skills/ by default)
• Verify each SKILL.md has valid YAML frontmatter with name and description fields (all current skills already satisfy this requirement)
• Add npx skills add KemingHe/common-devx install instructions to README

This enables per-skill installs, multi-agent targeting, and npx skills update for downstream consumers without changing the SKILL.md format or content.

Alternatives Considered

• Keep manual copy-paste (current working state, no urgency to change)
• Publish to npmjs as a standalone package (heavier overhead, overkill for SKILL.md files)