Migrate remaining in-repo workstream REST callers to /workplans

Point cleanup_stale_tasks, validate_repo_adr, custodian_cli, dashboard data
loaders, extensions poll, MCP legacy resource, and consistency_check task
queries at preferred /workplans routes. Add caller inventory evidence doc.

scripts/cleanup_stale_tasks.py

@@ -78,7 +78,7 @@ def main() -> int:
 
     try:
         tasks      = get("/tasks/?limit=500")
-        workstreams = get("/workstreams/")
+        workstreams = get("/workplans/")
     except urllib.error.URLError as e:
         print(f"[cleanup-stale] ERROR: API unreachable — {e}", file=sys.stderr)
         print("[cleanup-stale] Start the API with: cd ~/state-hub && make api", file=sys.stderr)

scripts/consistency_check.py

@@ -936,7 +936,7 @@ def check_repo(api_base: str, repo_slug: str, repo_path_override: str | None = N
             # Continue to check drift even with mismatched repo
 
         tasks = get_tasks_from_workplan(meta, body)
-        db_tasks = _api_get(api_base, "/tasks", {"workstream_id": ws_id})
+        db_tasks = _api_get(api_base, "/tasks", {"workplan_id": ws_id})
         file_task_statuses = [
             str(task.get("status", "")).strip()
             for task in tasks
@@ -2046,7 +2046,7 @@ def _write_custodian_brief(api_base: str, repo_slug: str, repo_path: str) -> boo
         for ws in workstreams:
             ws_title = ws.get("title", ws.get("slug", "?"))
             ws_id = ws["id"]
-            tasks = _api_get(api_base, "/tasks", {"workstream_id": ws_id}) or []
+            tasks = _api_get(api_base, "/tasks", {"workplan_id": ws_id}) or []
             if not isinstance(tasks, list):
                 tasks = []
 

scripts/validate_repo_adr.py

@@ -339,7 +339,7 @@ def check_api(api_base: str, metas: list[dict], domain_slug: str | None,
         file_ws_ids.add(ws_id)
         if meta.get("_active_file", True):
             active_file_ws_ids.add(ws_id)
-        ws = _api_get(api_base, f"/workstreams/{ws_id}")
+        ws = _api_get(api_base, f"/workplans/{ws_id}")
         if ws is None:
             report.add(Level.FAIL, "workstream-ref-exists",
                        f"state_hub_workstream_id {ws_id} not found in DB (stale reference)",
@@ -373,7 +373,7 @@ def check_api(api_base: str, metas: list[dict], domain_slug: str | None,
         if t_domain not in domains_to_check:
             continue
         t_id = topic["id"]
-        workstreams = _api_get(api_base, "/workstreams", {"topic_id": t_id})
+        workstreams = _api_get(api_base, "/workplans", {"topic_id": t_id})
         if not isinstance(workstreams, list):
             report.add(Level.WARN, "orphan-detection",
                        f"Could not fetch workstreams for topic {t_id[:8]}… (domain={t_domain})")