# M132 Group H — CC 2.1.133 effort + skill discovery (FINAL group)

Completes M132 (CC 2.1.133 adoption). 3 issues, doc adoption + matrix entries + hooks README note. After this lands, M132 is 11/11 (100%).

## Issues closed

# | Slug | What it fixes / adds
--- | --- | ---
1702 | hooks-effort-level-input | NEW: hooks receive `effort.level` JSON input field + `$CLAUDE_EFFORT` env var (also in Bash tool)
1708 | effort-cross-session-leak-fix | FIXED: `/effort` in one session no longer changes other concurrent sessions; IDE effort changes no longer silently dropped
1709 | subagent-skill-discovery-fix | FIXED: subagents (via Task tool) now discover project/user/plugin skills as documented

## OrchestKit impact

- #1702 — 188 hooks in `src/hooks/` can now branch on effort without parsing JSON input. `quality-gates` skill benefits directly.
- #1708 — Chain-patterns multi-worktree flows are stable; concurrent sessions are isolated.
- #1709 — Agent-orchestration patterns (`ork:implement`, `ork:fix-issue`, etc.) that spawn subagents now work as documented; if subagents claimed "skill not found", that was the bug.

## Files

- `src/skills/configure/references/cc-version-settings.md` — 3 new subsections under existing `## CC 2.1.133 Settings`
- `src/hooks/README.md` — callout: hooks can read `$CLAUDE_EFFORT` directly (2.1.133+)
- `src/hooks/src/lib/cc-version-matrix.ts` — 3 new entries
- `src/hooks/src/__tests__/lib/cc-version-matrix.test.ts` — count assertions bumped +3 (matrix grows from 400 → 403)
- plugins/ mirror + docs/site MDX regen

## Verification

    vitest cc-version-matrix.test.ts  64/64 PASS

## M132 milestone closeout

After this PR merges:

    M132 (CC 2.1.133 adoption)  11/11 closed  (100%)
      Group F  4 issues  shipped
      Group G  4 issues  shipped
      Group H  3 issues  shipping NOW