feat: voortgang copy/duplicate/move in headerbar

webui/backend/app/db/task_repository.py

@@ -8,6 +8,7 @@ from pathlib import Path
 
 VALID_STATUSES = {"queued", "running", "completed", "failed", "requested", "preparing", "ready", "cancelled"}
 VALID_OPERATIONS = {"copy", "move", "download", "duplicate"}
+NON_TERMINAL_STATUSES = ("queued", "running", "requested", "preparing")
 TASK_MIGRATION_COLUMNS: dict[str, str] = {
     "operation": "TEXT NOT NULL DEFAULT 'copy'",
     "status": "TEXT NOT NULL DEFAULT 'queued'",
@@ -394,6 +395,44 @@ class TaskRepository:
         with self._connection() as conn:
             conn.execute("DELETE FROM task_artifacts WHERE task_id = ?", (task_id,))
 
+    def reconcile_incomplete_tasks(
+        self,
+        *,
+        error_code: str = "task_interrupted",
+        error_message: str = "Task was interrupted before completion",
+    ) -> list[str]:
+        finished_at = self._now_iso()
+        placeholders = ", ".join("?" for _ in NON_TERMINAL_STATUSES)
+        with self._connection() as conn:
+            rows = conn.execute(
+                f"""
+                SELECT id
+                FROM tasks
+                WHERE status IN ({placeholders})
+                """,
+                NON_TERMINAL_STATUSES,
+            ).fetchall()
+            task_ids = [row["id"] for row in rows]
+            if not task_ids:
+                return []
+            task_placeholders = ", ".join("?" for _ in task_ids)
+            conn.execute(
+                f"""
+                UPDATE tasks
+                SET status = ?, finished_at = ?, error_code = ?, error_message = ?, current_item = NULL
+                WHERE id IN ({task_placeholders})
+                """,
+                ("failed", finished_at, error_code, error_message, *task_ids),
+            )
+            conn.execute(
+                f"""
+                DELETE FROM task_artifacts
+                WHERE task_id IN ({task_placeholders})
+                """,
+                task_ids,
+            )
+        return task_ids
+
     def _migrate_tasks_columns(self, conn: sqlite3.Connection) -> None:
         rows = conn.execute("PRAGMA table_info(tasks)").fetchall()
         existing_columns = {row["name"] for row in rows}