成绩复盘与 PC 端上传优化：各科考试状态多选及树状统计。

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/services/migrate.py

@@ -85,3 +85,9 @@ def run_migrations() -> None:
             with engine.begin() as conn:
                 for clause in wq_alters:
                     conn.execute(text(f"ALTER TABLE wrong_questions {clause}"))
+
+    if "subject_scores" in tables:
+        ss_columns = {col["name"] for col in inspector.get_columns("subject_scores")}
+        if "review_statuses_json" not in ss_columns:
+            with engine.begin() as conn:
+                conn.execute(text("ALTER TABLE subject_scores ADD COLUMN review_statuses_json TEXT"))