业务更名为撞车并切换crash路由

用户可见文案与页面/API路径改为撞车与crash，保留mohong表与权限码兼容；移动端入口去掉租/撞图标。

backend/migrations/000032_crash_branding.sql

@@ -0,0 +1,31 @@
+-- +goose Up
+
+UPDATE chat_support_groups
+SET name = '撞车-客服',
+    description = '用户从撞车入口联系客服时，按本组成员在线与负载分配'
+WHERE code = 'mohong';
+
+UPDATE system_configs
+SET description = REPLACE(description, '摸大红', '撞车'),
+    `value` = REPLACE(`value`, '摸大红', '撞车')
+WHERE `key` LIKE 'mohong.%';
+
+UPDATE permissions
+SET name = REPLACE(name, '摸大红', '撞车')
+WHERE code LIKE 'mohong:%';
+
+-- +goose Down
+
+UPDATE chat_support_groups
+SET name = '摸大红-客服',
+    description = '用户从摸大红入口联系客服时，按本组成员在线与负载分配'
+WHERE code = 'mohong';
+
+UPDATE system_configs
+SET description = REPLACE(description, '撞车', '摸大红'),
+    `value` = REPLACE(`value`, '撞车', '摸大红')
+WHERE `key` LIKE 'mohong.%';
+
+UPDATE permissions
+SET name = REPLACE(name, '撞车', '摸大红')
+WHERE code LIKE 'mohong:%';