docs: route registrar skips through repo-manager

scripts/project_rules/workplan-convention.template

@@ -26,6 +26,20 @@ visible at session start. Pick one up by creating the workplan file, committing,
 and running `statehub fix-consistency` — C-06 registers the workplan in the hub.
 Never register by hand with `create_workplan` (legacy MCP alias: `create_workstream`).
 
+If `fix-consistency` reports C-06/C-11 skipped because this host is not the
+identifier registrar, further retries cannot help. Do not set
+`STATEHUB_REGISTRAR` and do not create hub rows manually. Commit and push the
+file-backed work, then run the scoped repo-manager fallback once:
+
+```bash
+uv run --project ~/repo-manager rmgr registrar-reconcile \
+  --path . --confirm-primary --push
+```
+
+If it is unavailable, send one request to `repo-manager` naming the repository
+and missing canonical ids. Continue local work from files; hub UUID absence is
+an indexing delay, not a reason to repeat the same checks.
+
 Task blocks use this shape:
 
 ```task