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/KONT-WP-0014-cmis-object-content-maturity.md

@@ -2,7 +2,7 @@
 id: KONT-WP-0014
 type: workplan
 title: "CMIS Object/Content Maturity Expansion"
-domain: markitect
+domain: communication
 repo: kontextual-engine
 status: completed
 owner: codex
@@ -351,7 +351,7 @@ Progress:
 
 ```task
 id: KONT-WP-0014-T006
-status: cancelled
+status: cancel
 priority: medium
 state_hub_task_id: "b1562023-807b-4fed-b794-6930fcc2274e"
 ```
@@ -367,7 +367,7 @@ Disposition:
 
 ```task
 id: KONT-WP-0014-T007
-status: cancelled
+status: cancel
 priority: medium
 state_hub_task_id: "60f7b222-6eea-4add-822d-3439d568d4f6"
 ```