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/ITC-WP-0002-service-surface-cli-json-api.md

@@ -2,7 +2,8 @@
 id: ITC-WP-0002
 type: workplan
 title: "Service Surface Baseline CLI JSON API"
-domain: canon
+domain: infotech
+topic_slug: canon
 repo: info-tech-canon
 status: finished
 priority: high