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

workplans/NK-WP-0012-iam-profile-specification.md

@@ -2,7 +2,7 @@
 id: NK-WP-0012
 type: workplan
 title: "NetKingdom IAM Profile Specification"
-domain: netkingdom
+domain: infotech
 repo: net-kingdom
 status: finished
 owner: worsch
@@ -15,8 +15,7 @@ depends_on:
   - NK-WP-0006
 state_hub_workstream_id: 9b8e4afc-eb71-47d9-8750-799a082b320a
 enables:
-  - NK-WP-0011
----
+  - NK-WP-0011---
 
 # NK-WP-0012 — NetKingdom IAM Profile Specification