feat(tasks): adopt canonical task statuses

scripts/validate_repo_adr.py

@@ -49,6 +49,7 @@ from api.workplan_status import (  # noqa: E402
     SUPPORTED_WORKSTREAM_STATUSES,
     normalize_workstream_status,
 )
+from api.task_status import CANONICAL_TASK_STATUSES, normalize_task_status  # noqa: E402
 
 try:
     import yaml as _yaml
@@ -70,7 +71,7 @@ except ImportError:
 REQUIRED_FRONTMATTER = {"id", "type", "title", "domain", "status", "owner", "created"}
 VALID_WP_STATUSES = set(CANONICAL_WORKSTREAM_STATUSES)
 SUPPORTED_WP_STATUSES = set(SUPPORTED_WORKSTREAM_STATUSES)
-VALID_TASK_STATUSES = {"todo", "in_progress", "blocked", "done", "cancelled"}
+VALID_TASK_STATUSES = set(CANONICAL_TASK_STATUSES)
 VALID_TASK_PRIORITIES = {"low", "medium", "high", "critical"}
 
 _WP_ID_RE = re.compile(r"^(?:[A-Z]+-WP-\d+|ADHOC-\d{4}-\d{2}-\d{2})$")
@@ -264,10 +265,12 @@ def _check_workplan_file(wp_file: Path, report: Report) -> dict | None:
         t_status = str(task.get("status", ""))
         if not t_status:
             report.add(Level.FAIL, "task-status", "Missing 'status' field", tref)
-        elif t_status not in VALID_TASK_STATUSES:
-            report.add(Level.FAIL, "task-status-value",
-                       f"status {t_status!r} not in {sorted(VALID_TASK_STATUSES)}", tref)
-
+        else:
+            try:
+                normalize_task_status(t_status)
+            except ValueError:
+                report.add(Level.FAIL, "task-status-value",
+                           f"status {t_status!r} not in {sorted(VALID_TASK_STATUSES)}", tref)
         t_prio = str(task.get("priority", ""))
         if not t_prio:
             report.add(Level.WARN, "task-priority", "Missing 'priority' field", tref)