feat(scada): add calibrated monitoring and incident recovery

app/infra/db/postgresql/operational_tasks.py

@@ -711,6 +711,28 @@ class OperationalTaskRepository:
         row = await cursor.fetchone()
         return dict(row) if row else None
 
+    async def recovery_candidates(self, limit: int, created_from=None) -> list[dict]:
+        cursor = await self.connection.execute(
+            """SELECT document FROM workbench.operational_tasks
+               WHERE project_id=%s AND task_type='event_investigation'
+                 AND status NOT IN ('cancelled','failed')
+                 AND document#>>'{handling_context,phase}'='waiting_scada'
+                 AND document#>>'{source,replay_context}' IS NULL
+                 AND (%s::timestamptz IS NULL OR created_at>=%s)
+               ORDER BY COALESCE((document#>>'{handling_context,last_checked_at}')::timestamptz,created_at),task_id LIMIT %s""",
+            (self.project_id, created_from, created_from, limit),
+        )
+        return [row["document"] for row in await cursor.fetchall()]
+
+    async def list_investigation_alerts(self, task_id: str) -> list[dict]:
+        cursor = await self.connection.execute(
+            """SELECT document FROM workbench.alerts WHERE project_id=%s
+               AND status IN ('active','acknowledged')
+               AND document->>'condition_id'=%s ORDER BY alert_id""",
+            (self.project_id, f"operational-task:{task_id}"),
+        )
+        return [row["document"] for row in await cursor.fetchall()]
+
     async def upsert_feedback(self, task_id: str, feedback: dict, accepted_at) -> None:
         await self.connection.execute(
             """INSERT INTO workbench.operational_task_external_feedback