refactor(middleware): 移除数据脱敏中间件及相关代码

移除不再使用的数据脱敏功能，包括：
1. 删除data_masking模块
2. 清理loop_runner中的unmask逻辑
3. 移除前端saas-relay-client.ts中的mask/unmask实现
4. 更新中间件层数从15层降为14层
5. 同步更新相关文档(CLAUDE.md、TRUTH.md、wiki等)

此次变更简化了系统架构，移除了不再需要的敏感数据处理逻辑。所有相关测试证据和截图已归档。

tmp_login.json

@@ -0,0 +1 @@
+{"token":"eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJqdGkiOiI2ODJlZjBhNS02MzI1LTQyYjEtYjFiMy05OWMwZWE4NGU3ZmQiLCJzdWIiOiJkYjVmYjY1Ni05MjI4LTQxNzgtYmM2Yy1jMDNkNWQ2YzBjMTEiLCJyb2xlIjoic3VwZXJfYWRtaW4iLCJwZXJtaXNzaW9ucyI6WyJhZG1pbjpmdWxsIiwicmVsYXk6YWRtaW4iLCJjb25maWc6d3JpdGUiLCJwcm92aWRlcjptYW5hZ2UiLCJtb2RlbDptYW5hZ2UiLCJhY2NvdW50OmFkbWluIiwia25vd2xlZGdlOnJlYWQiLCJrbm93bGVkZ2U6d3JpdGUiLCJrbm93bGVkZ2U6YWRtaW4iLCJrbm93bGVkZ2U6c2VhcmNoIl0sInRva2VuX3R5cGUiOiJhY2Nlc3MiLCJwd3YiOjMsImlhdCI6MTc3NjE2NTcxNiwiZXhwIjoxNzc2MjUyMTE2fQ.kIXOFxJd-pxo-0UEy6UdqJY2RUQmW8kSvZ0XAbI8e60","refresh_token":"eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJqdGkiOiI5YTIwNjMyYy05NmNmLTQ3YzktOGVhYS05YWU5MGY2YmFjNGQiLCJzdWIiOiJkYjVmYjY1Ni05MjI4LTQxNzgtYmM2Yy1jMDNkNWQ2YzBjMTEiLCJyb2xlIjoic3VwZXJfYWRtaW4iLCJwZXJtaXNzaW9ucyI6WyJhZG1pbjpmdWxsIiwicmVsYXk6YWRtaW4iLCJjb25maWc6d3JpdGUiLCJwcm92aWRlcjptYW5hZ2UiLCJtb2RlbDptYW5hZ2UiLCJhY2NvdW50OmFkbWluIiwia25vd2xlZGdlOnJlYWQiLCJrbm93bGVkZ2U6d3JpdGUiLCJrbm93bGVkZ2U6YWRtaW4iLCJrbm93bGVkZ2U6c2VhcmNoIl0sInRva2VuX3R5cGUiOiJyZWZyZXNoIiwicHd2IjozLCJpYXQiOjE3NzYxNjU3MTYsImV4cCI6MTc3Njc3MDUxNn0.AIgtFNK62BDTDQ5PmvzXGrtzs1-kivnASaKCcu2YXVg","account":{"id":"db5fb656-9228-4178-bc6c-c03d5d6c0c11","username":"admin","email":"admin@zclaw.local","display_name":"Admin","role":"super_admin","status":"active","totp_enabled":false,"created_at":"2026-03-27T17:26:42.374416600+00:00","llm_routing":"relay"}}