WP-0003 Part 6: packaging sync and docs close-out

Sync coach, sys-medic, scope-analyst, optimization, and updated
tdd-workflow to packaged data (20 agents). Update architecture.md,
README orientation, and CHANGELOG for the metrics loop. Mark WP-0003
completed.

workplans/kaizen-agentic-WP-0003-measurement-loop.md

@@ -4,7 +4,7 @@ type: workplan
 title: "Measurement Loop: Metrics Convention, Collection, and Optimizer Integration"
 domain: custodian
 repo: kaizen-agentic
-status: active
+status: completed
 owner: kaizen-agentic
 topic_slug: custodian
 state_hub_workstream_id: 36252a45-f360-4496-bf77-17b5dfb02767
@@ -14,7 +14,7 @@ updated: "2026-06-18"
 
 # KAIZEN-WP-0003 — Measurement Loop: Metrics Convention, Collection, and Optimizer Integration
 
-**Status:** active
+**Status:** completed
 **Owner:** kaizen-agentic
 **Repo:** kaizen-agentic
 **Target version:** 1.1.0 (partial; remainder in WP-0001)
@@ -197,10 +197,10 @@ Close distribution and documentation gaps surfaced in gap analysis.
 
 ### Tasks
 
-- [ ] T21 — Sync missing 4 agents into `src/kaizen_agentic/data/agents/` (coach, sys-medic, scope-analyst, optimization)
-- [ ] T22 — Update `README.md` Getting Oriented to link `INTENT.md` and `wiki/` (SCOPE.md already updated)
-- [ ] T23 — Update `.claude/rules/architecture.md` agent table (21 agents, meta category, sys-medic, coach)
-- [ ] T24 — CHANGELOG.md entry for metrics convention and CLI
+- [x] T21 — Sync missing 4 agents into `src/kaizen_agentic/data/agents/` (coach, sys-medic, scope-analyst, optimization)
+- [x] T22 — Update `README.md` Getting Oriented to link `INTENT.md` and `wiki/` (SCOPE.md already updated)
+- [x] T23 — Update `.claude/rules/architecture.md` agent table (20 agents, meta category, sys-medic, coach)
+- [x] T24 — CHANGELOG.md entry for metrics convention and CLI
 
 ### Definition of done