refactor: Unify canonical task outcome statuses (completed, skipped) across workflow and memory services (Closes #384)

backend/api/today_workflow.py

@@ -191,7 +191,7 @@ async def set_task_status(
         memory = TaskMemoryService(user_id, db)
         await memory.record_task_outcome(
             task, 
-            feedback_score=1 if status == "completed" else -1 if status == "dismissed" else 0,
+            feedback_score=1 if status == "completed" else -1 if status in ("dismissed", "skipped") else 0,
             feedback_text=completion_notes
         )
     except Exception as e:
@@ -210,7 +210,7 @@ async def set_task_status(
         "pillarId": task.pillar_id,
         "title": task.title,
         "description": task.description,
-        "status": "skipped" if task.status == "dismissed" else task.status,
+        "status": "skipped" if task.status in ("dismissed", "skipped") else task.status,
     }
     asyncio.create_task(_index_tasks_to_sif(user_id, plan_date, [task_payload], label="today"))
 
@@ -220,7 +220,7 @@ async def set_task_status(
             "task": {
                 "id": str(task.id),
                 "pillarId": task.pillar_id,
-                "status": "skipped" if task.status == "dismissed" else task.status,
+                "status": "skipped" if task.status in ("dismissed", "skipped") else task.status,
                 "decided_at": task.decided_at.isoformat() if task.decided_at else None,
             }
         },

backend/services/task_memory_service.py

@@ -15,7 +15,7 @@ from services.intelligence.txtai_service import TxtaiIntelligenceService
 
 EXACT_DUPLICATE_LOOKBACK_DAYS = 7
 SEMANTIC_SUPPRESSION_SCORE_THRESHOLD = 0.85
-SUPPRESSED_STATUSES = {"dismissed", "rejected"}
+SUPPRESSED_STATUSES = {"dismissed", "rejected", "skipped"}
 
 class TaskMemoryService:
     """
@@ -72,7 +72,7 @@ class TaskMemoryService:
             self.db.commit()
             
             # 2. Index into txtai (if status is meaningful)
-            if task.status in ["completed", "dismissed", "rejected"]:
+            if task.status in ["completed", "dismissed", "rejected", "skipped"]:
                 # We index the task text with metadata about its outcome
                 # This allows us to search: "Has the user rejected similar tasks?"
                 doc = {

backend/services/today_workflow_service.py

@@ -25,6 +25,7 @@ def _coerce_priority(value: Any) -> str:
 def _coerce_status(value: Any) -> str:
     v = str(value or "pending").lower().strip()
     if v in {"pending", "in_progress", "completed", "skipped", "dismissed"}:
+        # Canonicalize 'dismissed' to 'skipped' for consistency
         return "skipped" if v == "dismissed" else v
     return "pending"