diff --git a/src/blackboard/db.py b/src/blackboard/db.py
index 8a2ab8a..1f5654c 100644
--- a/src/blackboard/db.py
+++ b/src/blackboard/db.py
@@ -14,8 +14,12 @@ def init_db(db_path: Path) -> None:
     try:
         for stmt in _SCHEMA_STATEMENTS:
             conn.execute(stmt)
+        for stmt in _CARDS_SCHEMA:
+            conn.execute(stmt)
         # v2.6.1 迁移：旧 DB 可能缺少新字段
         _migrate_v261(conn)
+        # v2.7 迁移：cards 表 + card_id + stage
+        _migrate_v27(conn)
         conn.commit()
     finally:
         conn.close()