fix: rename upgrade() to migrate() in migrate_017 so it runs automatically

The migration runner (db/__init__.py) calls module.migrate() with no
arguments, but migrate_017 defined upgrade(engine). This meant the
slides_config_json column was never added to insurance_ppt_templates
in production, causing a 500 on /insurance/ppt/render-options.

api/insurance/db/migrate_017.py

@@ -10,30 +10,32 @@ from sqlalchemy import text
 logger = logging.getLogger(__name__)
 
 
-def upgrade(engine):
+def migrate():
     """执行迁移。"""
-    with engine.begin() as conn:
+    from insurance.db.compat import db
-        # 检查列是否已存在
-        result = conn.execute(text(
-            "SELECT COUNT(*) FROM information_schema.columns "
-            "WHERE table_name = 'insurance_ppt_templates' AND column_name = 'slides_config_json'"
-        ))
-        if result.scalar() > 0:
-            logger.info("slides_config_json 列已存在，跳过迁移")
-            return
 
-        conn.execute(text(
+    # 检查列是否已存在
-            "ALTER TABLE insurance_ppt_templates ADD COLUMN slides_config_json TEXT"
+    result = db.session.execute(text(
-        ))
+        "SELECT COUNT(*) FROM information_schema.columns "
-        logger.info("已添加 slides_config_json 列")
+        "WHERE table_name = 'insurance_ppt_templates' AND column_name = 'slides_config_json'"
+    ))
+    if result.scalar() > 0:
+        logger.info("slides_config_json 列已存在，跳过迁移")
+        return
 
-        # 为现有模板填充默认 slides_config
+    db.session.execute(text(
-        _seed_default_slides_config(conn)
+        "ALTER TABLE insurance_ppt_templates ADD COLUMN slides_config_json TEXT"
+    ))
+    db.session.commit()
+    logger.info("已添加 slides_config_json 列")
+
+    # 为现有模板填充默认 slides_config
+    _seed_default_slides_config(db)
 
 
-def _seed_default_slides_config(conn):
+def _seed_default_slides_config(db):
     """为现有模板填充默认的逐页配置。"""
-    templates = conn.execute(text(
+    templates = db.session.execute(text(
         "SELECT id, plan_type, required_page_types_json FROM insurance_ppt_templates WHERE status = 1"
     )).fetchall()
 
@@ -48,10 +50,11 @@ def _seed_default_slides_config(conn):
             continue
 
         slides_config = _build_default_slides_config(page_types, plan_type)
-        conn.execute(text(
+        db.session.execute(text(
             "UPDATE insurance_ppt_templates SET slides_config_json = :config WHERE id = :id"
         ), {"config": json.dumps(slides_config, ensure_ascii=False), "id": tpl_id})
 
+    db.session.commit()
     logger.info(f"已为 {len(templates)} 个模板填充默认 slides_config")