Add State Hub bootstrap workplan and agent integration files

Seed workplans/ with bootstrap workplan to satisfy ADR-001 C-01.
Includes regenerated dev-hub session-protocol and agent instruction files.

.claude/rules/workplan-convention.md

@@ -1,7 +1,7 @@
 ## Workplan Convention (ADR-001)
 
-File location: `workplans/domain-tree-WP-NNNN-<slug>.md`
-ID prefix: `DOMAIN-WP`
+File location: `workplans/DOMAIN-WP-NNNN-<slug>.md`
+ID prefix: `DOMAIN-WP-`
 
 Work items originate as files in this repo **before** being registered in the hub.
 
@@ -12,7 +12,7 @@ repo state, and `finished` when implementation is complete. `stalled` and
 `needs_review` are derived health labels, not stored statuses.
 
 Closed workplans may be moved to `workplans/archived/` with a completion-date
-prefix: `YYMMDD-domain-tree-WP-NNNN-<slug>.md`. The frontmatter id remains
+prefix: `YYMMDD-DOMAIN-WP-NNNN-<slug>.md`. The frontmatter id remains
 unchanged; the prefix is only for quick visual reference.
 
 Small opportunistic tasks discovered during another session use **Ad Hoc Tasks**:
@@ -25,4 +25,16 @@ Ecosystem todos from other agents arrive as `[repo:domain-tree]` hub tasks —
 visible at session start. Pick one up by creating the workplan file, then registering
 the workstream.
 
+Task blocks use this shape:
+
+```task
+id: DOMAIN-WP-NNNN-T01
+status: wait | todo | progress | done | cancel
+priority: high | medium | low
+state_hub_task_id: "<uuid>"         # written by fix-consistency — do not edit
+```
+
+Status progression is `todo` → `progress` → `done`; use `wait` for waiting or
+blocked work and `cancel` for stopped work.
+
 <!-- Ralph Loop rules and HEUREKA sequence: ~/.claude/CLAUDE.md — do not duplicate here -->