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

AGENTS.md

@@ -4,10 +4,10 @@
 
 **Purpose:** Capability-first development ecosystem for evolving reusable software capabilities from natural-language intent through architecture-aware discovery, validation, implementation, feedback, and reuse.
 
-**Domain:** helix_forge
+**Domain:** infotech
 **Repo slug:** helix-forge
 **Topic ID:** `f39fa2a3-c491-414c-a91b-b4c5fcc6139c`
-**Workplan prefix:** `HELIX-WP-`
+**Workplan prefix:** `HF-WP-`
 
 ---
 
@@ -151,6 +151,11 @@ every repo's agent instructions because it is high-frequency, high-risk, and eas
 get wrong.
 
 **Canon:** `~/ops-warden/wiki/CredentialRouting.md` · catalog `~/ops-warden/registry/routing/catalog.yaml`
+
+<!-- REPO-AGENTS-EXTENSIONS -->
+<!-- Append repo-specific agent instructions below this marker.
+     The state-hub template sync preserves content after this line. -->
+
 ---
 
 ## Workplan Convention (ADR-001)
@@ -176,7 +181,7 @@ anything needing analysis, design, approval, dependencies, or multiple phases.
 id: HELIX-WP-NNNN
 type: workplan
 title: "..."
-domain: helix_forge
+domain: infotech
 repo: helix-forge
 status: proposed | ready | active | blocked | backlog | finished | archived
 owner: codex