feat: add prompt-first batches and pausable task guidance

artemis/data_engine/storage.py

@@ -372,6 +372,20 @@ class StorageManager:
                 )
             conn.commit()
 
+    def discard_session_recordings(self, session_id: str) -> None:
+        """Remove references to temporary analysis-only captures after the run."""
+        with self._get_connection() as conn:
+            conn.execute(
+                "UPDATE video_recordings SET local_video_path = NULL, status = 'unavailable' "
+                "WHERE session_id = ?",
+                (session_id,),
+            )
+            conn.execute(
+                "UPDATE sessions SET video_filepath = NULL WHERE session_id = ?",
+                (session_id,),
+            )
+            conn.commit()
+
     def update_session_video_path(self, session_id: UUID, video_path: str):
         """Update video filepath across session and video_recordings tables."""
         with self._get_connection() as conn: