fix: overhaul Claude Code plugin for correctness and spec compliance (#225)
- Fix critical bugs: coder-agent name (CoderAgent→coder-agent), manifest
path in session-start.sh, /oac:setup ghost command replaced with /install-context
- Fix hooks.json: add timeout/async, add description, restore matcher
- Fix session-start.sh: dual-format output (Claude Code + Cursor/OpenCode),
remove invalid JSON escapes for $ and backtick
- Fix agent spec compliance: disallowedTools on read-only agents, WebFetch
on external-scout, haiku model on context-scout, example blocks on 3 agents
- Fix skill descriptions: triggering conditions only (no workflow summaries)
per superpowers empirical testing — prevents Claude shortcutting skill content
- Add Red Flags + Rationalization tables to 4 discipline skills
- Add install-context skill + command replacing oac-setup/oac-plan/oac-add-context
- Add cleanup-tmp.sh (was missing, broke /oac:cleanup)
- Add TypeScript installer (install-context.ts/js) with profile-based download
- Update plugin.json: keywords, homepage for marketplace discoverability
- Update README: correct skill count, fix structure diagram, remove stale refs
- Remove obsolete files: FIRST-TIME-SETUP.md, INSTALL.md, QUICK-START.md,
download-context.sh, verify-context.sh, load-config.sh, context-manager skill,
oac-setup/oac-plan/oac-add-context commands
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