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- Add configurable spending limit (quota_limit) for apikey-type accounts
- Atomic quota accumulation via PostgreSQL JSONB operations on TotalCost
- Scheduler filters out over-quota accounts with outbox-triggered snapshot refresh
- Display quota usage ($used / $limit) in account capacity column
- Add "Reset Quota" action in account menu to reset usage to zero
- Editing account settings preserves quota_used (no accidental reset)
- Covers all 3 billing paths: Anthropic, Gemini, OpenAI RecordUsage

chore: bump version to 0.1.90.4

- 移除 ScheduledTestOutcome 中间类型，RunTestBackground 直接返回 *ScheduledTestResult
- 简化 SaveResult 直接接受 *ScheduledTestResult
- 移除 handler 中不必要的 nil 检查
- 移除前端 ScheduledTestsPanel 中多余的 String() 转换
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

每个测试计划绑定一个账号和一个模型，按 cron 表达式定期执行测试，
保存历史结果并在前端账号管理页面中提供完整的增删改查和结果查看功能。

主要变更：
- 新增 scheduled_test_plans / scheduled_test_results 两张表及迁移
- 后端 service 层：CRUD 服务 + 后台 cron runner（每分钟扫描到期计划并发执行）
- RunTestBackground 方法通过 httptest 在内存中执行账号测试并解析 SSE 输出
- Redis leader lock + pg_try_advisory_lock 双重保障多实例部署只执行一次
- REST API：5 个管理端点（计划 CRUD + 结果查询）
- 前端 ScheduledTestsPanel 组件：计划管理、启用开关、内联编辑、结果展开查看
- 中英文 i18n 支持
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

新增 OpenAI WebSocket v2 passthrough relay 数据面与服务适配层，
支持按账号 ws mode 在 ctx_pool 与 passthrough 间路由。

同步调整前端 OpenAI ws mode 选项为 off/ctx_pool/passthrough，
并补充 i18n 文案与对应单测。

新增 Caddyfile.dmit 与 docker-compose-aicodex.yml 部署配置，
用于宿主机场景下的反向代理与服务编排。
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

账号首次 401 仅临时不可调度，给予 token 刷新窗口；若恢复后再次 401
说明凭证确实失效，直接升级为错误状态以避免反复无效调度。

- 缓存中 reason 为空时从 DB 回退读取，防止升级判断失效
- ClearError 同时清除临时不可调度状态，管理员恢复后重新给予一次机会
- 管理后台账号列表添加"临时不可调度"状态筛选
- 补充 DB 回退场景单元测试

The public settings API filters out menu items with visibility='admin',
so customMenuItemsForAdmin was always empty when reading from
cachedPublicSettings. Fix by loading custom menu items from the admin
settings API (via adminSettingsStore) which returns all items unfiltered.

Changes:
- adminSettings store: store custom_menu_items from admin settings API
- AppSidebar: read admin menu items from adminSettingsStore instead of
  cachedPublicSettings
- CustomPageView: merge public and admin menu items so admin users can
  access admin-only custom pages

- Add admin menu permission check in CustomPageView (visibility + role)
- Sanitize SVG content with DOMPurify before v-html rendering (XSS prevention)
- Decouple router.go from dto package using anonymous struct
- Consolidate duplicate parseCustomMenuItems into dto.ParseCustomMenuItems
- Enhance menu item validation (count, length, ID uniqueness limits)
- Add audit logging for purchase_subscription and custom_menu_items changes
- Update API contract test to include custom_menu_items field
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Add configurable custom menu items that appear in sidebar, each rendering
an iframe-embedded external page. Includes shared URL builder with
src_host/src_url tracking, CSP frame-src multi-origin deduplication,
admin settings UI, and i18n support.

chore: bump version to 0.1.87.19
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

新增 UMQ (User Message Queue) 双模式支持:
- serialize: 账号级分布式串行锁 + RPM 自适应延迟（严格限流）
- throttle: 仅 RPM 自适应前置延迟，不阻塞并发（软性限速）

后端:
- config: 新增 Mode 字段，保留 Enabled 向后兼容
- service: 新增 UserMessageQueueService（Lua 锁/延迟算法/清理 worker）
- repository: 新增 UserMsgQueueCache（Redis Lua acquire/release/force-release）
- handler: 新增 UserMsgQueueHelper（SSE ping + 等待循环 + throttle）
- gateway: 按 mode 分支集成 serialize/throttle 逻辑
- lint: 修复 gofmt rewrite rules、errcheck 类型断言、staticcheck QF1012

前端:
- 三态选择器 UI（关闭/软性限速/串行队列）替代 toggle 开关
- BulkEdit 支持 null 语义（不修改）
- i18n 中英文文案

通过 6 轮专家评审（42 次 review）、golangci-lint、单元测试、集成测试。

Add a doughnut chart showing usage statistics broken down by group on
the admin usage records page. The chart appears alongside the existing
model distribution chart (2-column grid), with the token usage trend
chart moved to a separate full-width row below.

Changes:
- backend/pkg/usagestats: add GroupStat type
- backend/service: add GetGroupStatsWithFilters interface method and implementation
- backend/repository: implement GetGroupStatsWithFilters with LEFT JOIN groups
- backend/handler: add GetGroupStats handler with full filter support
- backend/routes: register GET /admin/dashboard/groups route
- backend/tests: add GetGroupStatsWithFilters stubs to contract/sora tests
- frontend/types: add GroupStat interface
- frontend/api: add getGroupStats API function and types
- frontend/components: add GroupDistributionChart.vue doughnut chart
- frontend/views: update UsageView layout and load group stats in parallel
- frontend/i18n: add groupDistribution, group, noGroup keys (zh + en)

- BulkUpdate handler: add structured details to 409 response
- BulkUpdateAccounts: simplify to global pre-check before any DB write;
  remove per-account snapshot tracking which is no longer needed
- MixedChannelError.Error(): restore English message for API compatibility
- BulkEditAccountModal: use t() with details for both pre-check and 409
  fallback paths instead of displaying raw backend strings
- Update test to verify pre-check blocks on existing group conflicts

Previously, preCheckMixedChannelRisk() skipped when selectedPlatforms
had more than one entry, and the catch block in submitBulkUpdate had no
409 handling — so multi-platform conflicts just showed a generic error.

- Rename canPreCheck(): only call pre-check API for single-platform
  antigravity/anthropic selections (API requires a single platform param)
- Pass `built` into preCheckMixedChannelRisk() so pendingUpdatesForConfirm
  is set before returning false
- submitBulkUpdate: add 409 mixed_channel_warning catch as fallback for
  multi-platform case, saving baseUpdates for retry
- Remove needsMixedChannelCheck() gate on confirm_mixed_channel_risk flag;
  use mixedChannelConfirmed alone so multi-platform retry also works

The response interceptor in client.ts transforms errors into plain
objects {status, code, message}, but catch blocks were checking
error.response?.status (AxiosError format) which never matched.

- Add error field passthrough in client.ts interceptor
- Refactor BulkEditAccountModal to use pre-check API (checkMixedChannelRisk)
  before submit, matching the single edit flow
- Fix EditAccountModal catch blocks to use interceptor error format
- Add bulk-update mixed channel unit tests

- Move mixed channel check before any DB writes in BulkUpdateAccounts
- Return 409 from BulkUpdate handler for MixedChannelError
- Add ConfirmDialog to BulkEditAccountModal for mixed channel warning
- Update mixed channel warning message to Chinese

- 移除 README.md / README_CN.md 中的 Codex CLI WebSocket v2 配置示例
- UseKeyModal OpenAI 分组新增 "Codex CLI (WebSocket)" tab，区分普通模式与 WS 模式
- 普通模式 config.toml 不含 WebSocket 字段，WS 模式包含 supports_websockets 和 features 配置
- 所有配置统一使用 sub2api 作为 model_provider 名称

- Move IncrementRPM after Forward success to prevent phantom RPM
  consumption during account switch retries
- Add base_rpm input sanitization (clamp to 0-10000) in Create/Update
- Add WindowCost scheduling checks to legacy path sticky sessions
  (4 check sites + 4 prefetch sites), fixing pre-existing gap
- Clean up rpm_strategy/rpm_sticky_buffer when disabling RPM in
  BulkEditModal (JSONB merge cannot delete keys, use empty values)
- Add json.Number test cases to TestGetBaseRPM/TestGetRPMStickyBuffer
- Document TOCTOU race as accepted soft-limit design trade-off

Without this, submitting a bulk edit with only RPM changes would be
rejected as "no fields selected".

- Use TxPipeline (MULTI/EXEC) instead of Pipeline for atomic INCR+EXPIRE
- Filter negative values in GetBaseRPM(), update test expectation
- Add RPM batch query (GetRPMBatch) to account List API
- Add warn logs for RPM increment failures in gateway handler
- Reset enableRpmLimit on BulkEditAccountModal close
- Use union type 'tiered' | 'sticky_exempt' for rpmStrategy refs
- Add design decision comments for rdb.Time() RTT trade-off

## 核心功能
- 添加 AdminUpdateAPIKeyGroupID 服务方法，支持绑定/解绑/保持不变三态语义
- 实现 UserRepository.AddGroupToAllowedGroups 接口，自动同步专属分组权限
- 添加 HTTP PUT /api-keys/:id handler 端点，支持管理员直接修改 API Key 分组

## 事务一致性
- 使用 ent Tx 保证专属分组绑定时「添加权限」和「更新 Key」的原子性
- Repository 方法支持 clientFromContext，兼容事务内调用
- 事务失败时自动回滚，避免权限孤立

## 业务逻辑
- 订阅类型分组阻断，需通过订阅管理流程
- 非活跃分组拒绝绑定
- 负 ID 和非法 ID 验证
- 自动授权响应，告知管理员成功授权的分组

## 代码质量
- 16 个单元测试覆盖所有业务路径和边界用例
- 7 个 handler 集成测试覆盖 HTTP 层
- GroupRepo stub 返回克隆副本，防止测试间数据泄漏
- API 类型安全修复（PaginatedResponse<ApiKey>）
- 前端 ref 回调类型对齐 Vue 规范

## 国际化支持
- 中英文提示信息完整
- 自动授权成功/失败提示

- 新增 PUT /api/v1/admin/api-keys/:id 端点，允许管理员修改任意用户 API Key 的分组绑定
- 跳过用户级权限校验但保留分组有效性验证，修改后触发认证缓存失效
- Service 层支持三态语义：nil=不修改，0=解绑，>0=绑定，<0=拒绝
- 指针值拷贝保证安全隔离，负数 groupID 返回 400 INVALID_GROUP_ID
- 前端 UserApiKeysModal 新增可点击的分组选择下拉框，支持多 Key 并发更新
- 下拉支持视口翻转和滚动关闭，按钮有 disabled 和加载状态
- 覆盖：后端 20 个单元测试 (Service 11 + Handler 9) + 前端 16 个 E2E 测试
- golangci-lint 0 issues, make test-unit 全部通过

- Add migration 060 to update model_mapping for all antigravity accounts
- Remove gemini-3-pro-image and gemini-3-pro-image-preview mappings
- Add gemini-3.1-flash-image and gemini-3.1-flash-image-preview mappings
- Update frontend usage window to show GImage for new model
- Update isImageGenerationModel to support new model

- useModelWhitelist.ts 添加 gpt-5.3-codex、gpt-5.3-codex-spark
- BulkEditAccountModal.vue 添加 5.3 模型选项与预设按钮（含 5.2→5.3 升级映射）

- 新增 selectedPlatforms prop，从父组件传入选中账号的平台集合
- 根据选中平台过滤模型列表与预设映射按钮，避免误操作
- 混选多平台时显示 amber 警告横幅，提醒用户注意映射适用性
- 仅警告不阻断，保持加法兼容