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/FEATURE-WP-0001-statehub-bootstrap.md

@@ -2,7 +2,7 @@
 id: FEATURE-WP-0001
 type: workplan
 title: "Bootstrap State Hub integration"
-domain: helix_forge
+domain: infotech
 repo: feature-control
 status: finished
 owner: codex