Normalize agent instructions and workplan frontmatter (STATE-WP-0067)

- Align agent files with on-disk workplan prefixes (infer from workplan ids)
- Set workplan domain to registered domain_slug; add topic_slug where applicable
- Repair frontmatter delimiter formatting; migrate legacy task status literals
- Regenerate AGENTS.md, CLAUDE.md, and .claude/rules from State Hub templates

.claude/rules/repo-identity.md

@@ -1,15 +1,5 @@
-## Repo Identity
+**Purpose:** Coulomb fleet self-improvement loop engagement — customer repo for scheduled kaizen-agentic supplier operations.
 
-**Purpose:** coulomb-loop — Coulomb customer engagement repo for fleet self-improvement loops operated with kaizen-agentic as supplier.
-
-**Domain:** coulomb_social
+**Domain:** communication
 **Repo slug:** coulomb-loop
 **Topic ID:** 36c7421b-c537-4723-bf75-42a3ebc6a1dc
-
-**Supplier:** `kaizen-agentic` (agents, CLI, playbook — not merged into this repo)
-
-**Custodian integration:** Registered in state-hub. Workplans use `LOOP-WP` prefix (ADR-001). Sync after workplan edits:
-
-```bash
-cd ~/state-hub && make fix-consistency REPO=coulomb-loop
-```