Merge origin/main which added the skills system (structured skills
with meta skill runtime injection). Resolve 4 conflicts:
- workspace/store.ts: keep both skills state + issue/inbox fetch
- types/index.ts: keep Skill types + our event exports
- handler/agent.go: merge visibility filtering + skills batch loading
- pnpm-lock.yaml: accept main's lockfile with skills deps
Also fix skill.go: migrate h.broadcast → h.publish (event bus)
to match our architecture where all WS events go through the bus.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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