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

.claude/rules/session-protocol.md

@@ -1,6 +1,7 @@
 ## Session Protocol
 
-State Hub: http://127.0.0.1:8000
+Dev Hub (State Hub API): http://127.0.0.1:8000
+MCP server name in `~/.claude.json`: `dev-hub`
 
 **Step 1 — Orient**
 
@@ -10,7 +11,7 @@ cat .custodian-brief.md
 ```
 Then call the MCP tool for richer cross-domain context when MCP tools are exposed:
 ```
-get_domain_summary("coulomb_social")
+get_domain_summary("communication")
 ```
 If MCP tools are unavailable in the current agent session, use the REST API:
 ```bash
@@ -43,7 +44,7 @@ For each file with `status: ready`, `active`, or `blocked`, note pending
 
 **Step 4 — Present brief**
 
-1. **Active workstreams** for `coulomb_social` — title, task counts, blocking decisions
+1. **Active workstreams** for `communication` — title, task counts, blocking decisions
 2. **Pending tasks** from `workplans/` + any `[repo:coulomb-loop]` hub tasks
 3. **Goal guidance** — if `goal_guidance` in summary:
    - `needs_workplan`: surface as top action — *"Repo goal '{title}' has no workplan yet"*