feat(tasks): adopt canonical task statuses

api/services/lifecycle.py

@@ -3,12 +3,13 @@ from __future__ import annotations
 from dataclasses import dataclass
 from typing import Any
 
+from api.task_status import ACTIVE_TASK_STATUSES, normalize_task_status, status_value
 from api.workplan_status import normalize_workstream_status
 
 
-TASK_STARTED_STATUS = "in_progress"
+TASK_STARTED_STATUS = "progress"
 TASK_NOT_STARTED_STATUS = "todo"
-TASK_ACTIVE_STATUSES = {"in_progress", "blocked"}
+TASK_ACTIVE_STATUSES = ACTIVE_TASK_STATUSES
 PARENT_ACTIVATION_STATUSES = {"proposed", "ready", "backlog"}
 
 
@@ -21,12 +22,6 @@ class LifecycleTransitionResult:
     parent_activated: bool = False
 
 
-def status_value(status: Any) -> str:
-    if hasattr(status, "value"):
-        status = status.value
-    return str(status or "").strip().lower()
-
-
 def should_activate_parent_for_task_start(
     *,
     previous_task_status: Any,
@@ -109,8 +104,8 @@ def transition_task_status(
         if previous_task_status is None
         else previous_task_status
     )
-    normalised_target = status_value(target_status)
-    task.status = status_coercer(normalised_target) if status_coercer else target_status
+    normalised_target = normalize_task_status(target_status)
+    task.status = status_coercer(normalised_target) if status_coercer else normalised_target
     parent_activated = activate_parent_for_task_start(
         previous_task_status=previous_status,
         new_task_status=normalised_target,