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/CE-WP-0002-pdf-review-slice.md

@@ -2,7 +2,7 @@
 id: CE-WP-0002
 type: workplan
 title: "PDF review slice — engine types, anchor, source, viewer, sidebar, click-to-reopen"
-domain: citation_evidence
+domain: infotech
 repo: citation-evidence
 repo_id: a677c189-b4e2-4f2a-9e48-faa482c277e6
 topic_slug: citation_evidence_mvp
@@ -16,8 +16,7 @@ depends_on_workplan: CE-WP-0001
 spec_refs:
   - wiki/ProductRequirementsDocument.md
   - wiki/ArchitectureOverview.md
-  - wiki/SharedContracts.md
----
+  - wiki/SharedContracts.md---
 
 # CE-WP-0002 — PDF Review Slice
 
@@ -55,7 +54,6 @@ T01 (engine types: Document, Representation, Annotation, Selector, EvidenceItem)
                            └─ T08 (click-to-reopen flow)
                                 └─ T09 (end-to-end test of PRD scenario steps 1-4)
 ```
-
 ---
 
 ## T01 — Engine types in `src/shared/`