feat: 增加后端初始化逻辑，自动向数据库注入审计日志菜单与默认权限

inventory-backend/app/__init__.py

@@ -142,8 +142,17 @@ def create_app():
     except ImportError as e:
         print(f"❌ 错误: Audit 模块导入失败: {e}")
 
+    # 2.9 初始化审计日志菜单和权限（防重复）
     # -----------------------------------------------------
-    # 2.9 注册库位管理模块 (Warehouse)
+    try:
+        from app.services.permission_service import PermissionService
+        with app.app_context():
+            PermissionService.init_audit_menu()
+    except Exception as e:
+        print(f"⚠️ 审计日志菜单初始化跳过: {e}")
+
+    # -----------------------------------------------------
+    # 2.10 注册库位管理模块 (Warehouse)
     # -----------------------------------------------------
     try:
         from app.api.v1.warehouse import warehouse_bp

inventory-backend/app/services/permission_service.py

@@ -147,3 +147,57 @@ class PermissionService:
         except Exception as e:
             session.rollback()
             raise e
+
+
+    @staticmethod
+    def init_audit_menu():
+        """
+        初始化审计日志菜单和超级管理员权限
+        防重复：只插入不存在的记录
+        """
+        try:
+            # 1. 检查并创建审计日志菜单
+            menu_code = 'system_audit'
+            existing_menu = SysMenu.query.filter_by(code=menu_code).first()
+            
+            if not existing_menu:
+                new_menu = SysMenu(
+                    parent_id=0,
+                    name='审计日志',
+                    code=menu_code,
+                    path='/system/audit',
+                    sort_order=110,
+                    is_visible=True
+                )
+                db.session.add(new_menu)
+                db.session.flush()  # 获取新插入的 ID
+                print(f"✅ 审计日志菜单已创建 (code: {menu_code})")
+            else:
+                print(f"ℹ️ 审计日志菜单已存在 (code: {menu_code})")
+
+            # 2. 为超级管理员赋予审计日志菜单权限
+            role_code = 'SUPER_ADMIN'
+            existing_perm = SysRolePermission.query.filter_by(
+                role_code=role_code,
+                target_code=menu_code
+            ).first()
+
+            if not existing_perm:
+                new_perm = SysRolePermission(
+                    role_code=role_code,
+                    target_code=menu_code,
+                    type='menu'
+                )
+                db.session.add(new_perm)
+                print(f"✅ 超级管理员已赋予审计日志权限")
+            else:
+                print(f"ℹ️ 超级管理员已拥有审计日志权限")
+
+            # 3. 提交
+            db.session.commit()
+            return True
+
+        except Exception as e:
+            db.session.rollback()
+            print(f"❌ 初始化审计日志菜单失败: {str(e)}")
+            raise e