refactor(stage-1): eliminate dead parse_text, simplify task progress SQL, remove prompt hacks

app/tasks.py

@@ -49,54 +49,24 @@ def update_task_progress(
     """
     Updates the progress and status of a running task.
     """
-    if total is not None and message is not None:
-        conn.execute(
-            """
-            UPDATE background_tasks
-            SET status = 'running',
-                progress_current = ?,
-                progress_total = ?,
-                message = ?,
-                updated_at = CURRENT_TIMESTAMP
-            WHERE id = ? AND status != 'cancelled'
-            """,
-            (current, total, message, task_id),
-        )
-    elif total is not None:
-        conn.execute(
-            """
-            UPDATE background_tasks
-            SET status = 'running',
-                progress_current = ?,
-                progress_total = ?,
-                updated_at = CURRENT_TIMESTAMP
-            WHERE id = ? AND status != 'cancelled'
-            """,
-            (current, total, task_id),
-        )
-    elif message is not None:
-        conn.execute(
-            """
-            UPDATE background_tasks
-            SET status = 'running',
-                progress_current = ?,
-                message = ?,
-                updated_at = CURRENT_TIMESTAMP
-            WHERE id = ? AND status != 'cancelled'
-            """,
-            (current, message, task_id),
-        )
-    else:
-        conn.execute(
-            """
-            UPDATE background_tasks
-            SET status = 'running',
-                progress_current = ?,
-                updated_at = CURRENT_TIMESTAMP
-            WHERE id = ? AND status != 'cancelled'
-            """,
-            (current, task_id),
-        )
+    set_clauses = ["status = 'running'", "progress_current = ?", "updated_at = CURRENT_TIMESTAMP"]
+    params: List[Any] = [current]
+
+    if total is not None:
+        set_clauses.append("progress_total = ?")
+        params.append(total)
+
+    if message is not None:
+        set_clauses.append("message = ?")
+        params.append(message)
+
+    params.append(task_id)
+    sql = f"""
+        UPDATE background_tasks
+        SET {', '.join(set_clauses)}
+        WHERE id = ? AND status != 'cancelled'
+    """
+    conn.execute(sql, params)
 
 
 def complete_task(