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/railiance-apps-WP-0004-app-deployment-improvements.md

@@ -2,7 +2,7 @@
 id: RAILIANCE-WP-0004
 type: workplan
 title: "App deployment improvements (lessons from RAILIANCE-WP-0002)"
-domain: railiance
+domain: financials
 repo: railiance-apps
 status: finished
 owner: railiance