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Add group_id and validity_days fields to CreateAndRedeemCodeRequest,
enabling subscription-type redemption codes to be created and redeemed
in a single API call.

- Type defaults to "balance" when omitted for backward compatibility
- Subscription type requires group_id (non-nil) and validity_days (>0)
- Existing balance/concurrency callers are unaffected

- 后端 handler：ResetSubscriptionQuotaRequest 新增 Monthly 字段，
  验证逻辑扩展为 daily/weekly/monthly 至少一项为 true
- 后端 service：AdminResetQuota 新增 resetMonthly 参数，
  调用 ResetMonthlyUsage；重置后追加 subCacheL1.Wait()，
  保证 ristretto Del() 的异步删除立即生效，消除重置后
  /v1/usage 返回旧用量数据的竞态窗口
- 后端测试：更新存量测试用例匹配新签名，补充
  TestAdminResetQuota_ResetMonthlyOnly /
  TestAdminResetQuota_ResetMonthlyUsageError 两个新用例
- 前端 API：resetQuota options 类型新增 monthly: boolean
- 前端视图：confirmResetQuota 改为同时重置 daily/weekly/monthly
- i18n：中英文确认提示文案更新，提及每月配额
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Add a dedicated modal in group management for viewing, adding, editing,
and deleting per-user rate multipliers within a group.

Backend:
- GET /admin/groups/:id/rate-multipliers - list entries with user details
- PUT /admin/groups/:id/rate-multipliers - batch sync (full replace)
- DELETE /admin/groups/:id/rate-multipliers - clear all entries
- Repository: GetByGroupID, SyncGroupRateMultipliers methods on
  user_group_rate_multipliers table (same table as user-side rates)

Frontend:
- New GroupRateMultipliersModal component with:
  - User search and add with email autocomplete
  - Editable rate column with local edit mode (cancel/save)
  - Batch adjust: multiply all rates by a factor
  - Clear all (local operation, requires save to persist)
  - Pagination (10/20/50 per page)
  - Platform icon with brand colors in group info bar
  - Unsaved changes indicator with revert option
- Unit tests for all three backend endpoints

新增以下运维告警指标类型:
- group_available_accounts: 组内可用账户数
- group_available_ratio: 组内可用账户比例
- group_rate_limit_ratio: 组内限速账户比例
- account_rate_limited_count: 限速账户数
- account_error_count: 错误账户数
- account_error_ratio: 错误账户比例
- overload_account_count: 过载账户数

包含比例和计数类指标的评估逻辑，并注册新的百分比类指标用于阈值校验。

- Add AdminResetQuota service method to reset daily/weekly usage windows
- Add POST /api/v1/admin/subscriptions/:id/reset-quota handler and route
- Add resetQuota API function in frontend subscriptions client
- Add reset quota button, confirmation dialog, and handlers in SubscriptionsView
- Add i18n keys for reset quota feature in zh and en locales
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

- 提取 refreshSingleAccount 私有方法复用单账号刷新逻辑
- 新增 BatchClearError handler (POST /admin/accounts/batch-clear-error)
- 新增 BatchRefresh handler (POST /admin/accounts/batch-refresh)
- 前端 AccountBulkActionsBar 添加批量重置状态/刷新令牌按钮
- AccountsView 添加 handler 支持 partial success 反馈
- i18n 中英文补充批量操作相关翻译

提取 DecodeIDToken（跳过过期校验）供导入场景使用，
ParseIDToken 复用它并保留原有过期检查行为。
导入 OpenAI/Sora OAuth 账号时自动补充缺失的 email、
plan_type、chatgpt_account_id 等字段，不覆盖已有值。

- 为定时测试计划增加 auto_recover 配置，补齐前后端类型、接口、仓储与数据库迁移
- 在定时测试成功后自动恢复账号 error、rate-limit 等可恢复运行时状态
- 新增 /admin/accounts/:id/recover-state 接口，合并原有重置状态与清限流操作
- 更新账号管理菜单与定时测试面板，补充自动恢复开关、说明提示和状态展示
- 补充账号恢复、限流清理与仓储同步相关测试

后端UpdateAccountRequest.Status的oneof验证缺少error状态，
前端编辑表单也未处理error状态，导致编辑异常账号时无法保存

commit 80ae592c 引入 lite 模式优化首次加载性能，但将窗口费用查询也一起跳过了。
commit 491a7444

 尝试用 30 秒快照缓存修复，但缓存过期后问题复现。

移除窗口费用查询的 lite/非 lite 区分，始终执行 PostgreSQL 聚合查询。
同时删除不再需要的 account_window_cost_cache.go 文件。
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lite 模式下从快照缓存读取窗口费用，非 lite 模式查询后写入缓存

- 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>

- 删除 account_today_stats_cache.go 中重复的 normalizeAccountIDList，统一使用 id_list_utils.go 的 normalizeInt64IDList
- 新增 snapshot_cache_test.go：覆盖 snapshotCache、buildETagFromAny、parseBoolQueryWithDefault
- 新增 id_list_utils_test.go：覆盖 normalizeInt64IDList、buildAccountTodayStatsBatchCacheKey
- 新增 ops_query_mode_test.go：覆盖 shouldFallbackOpsPreagg、cloneOpsFilterWithMode

新增系统设置 allow_ungrouped_key_scheduling（默认关闭），
未分组的 API Key 在网关请求时直接返回 403，
由 RequireGroupAssignment 中间件统一拦截，
支持 Anthropic / Google 两种错误格式响应。

全栈实现：常量 → 结构体 → 解析/更新/初始化 → DTO → 管理接口 →
中间件 → 路由注册 → 前端设置界面 + i18n。

1. (Critical) Filter admin-only menu items from public API responses -
   both GetPublicSettings handler and GetPublicSettingsForInjection now
   exclude visibility=admin items, preventing unauthorized access to
   admin menu URLs.

2. (Medium) Validate JSON array structure in sanitizeCustomMenuItemsJSON -
   use json.Unmarshal into []json.RawMessage instead of json.Valid to
   reject non-array JSON values that would cause frontend runtime errors.

3. (Medium) Decouple router from business JSON parsing - move origin
   extraction logic from router.go to SettingService.GetFrameSrcOrigins,
   eliminating direct JSON parsing of custom_menu_items in the routing
   layer.

4. (Low) Restrict custom menu item ID charset to [a-zA-Z0-9_-] via
   regex validation, preventing route-breaking characters like / ? # or
   spaces.

5. (Low) Handle crypto/rand error in generateMenuItemID - return error
   instead of silently ignoring, preventing potential duplicate IDs.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- 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>

- add default subscriptions to admin settings

- auto-assign subscriptions on register and admin user creation

- add validation/tests and align settings UI with subscription selector patterns

- 新增 AdminProxy / AdminProxyWithAccountCount DTO，遵循项目 Admin DTO 分层模式
- Proxy.Password 恢复 json:"-" 隐藏，ProxyFromService 不再赋值密码（纵深防御）
- 管理员接口使用 ProxyFromServiceAdmin / ProxyWithAccountCountFromServiceAdmin
- 前端代理列表新增 Auth 列：显示用户名 + 掩码密码 + 眼睛图标切换可见性
- Address 列新增复制按钮：左键复制完整 URL，右键选择格式
- 编辑模态框密码预填充 + 脏标记，避免误更新

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)

- 通过 User-Agent 识别 Claude Code 客户端并提取版本号
- 在网关层验证客户端版本是否满足管理员配置的最低要求
- 在管理后台提供版本要求配置选项（英文/中文双语）
- 实现原子缓存 + singleflight 防止并发问题和 thundering herd
- 使用 context.WithoutCancel 隔离 DB 查询，避免客户端断连影响缓存
- 双 TTL 策略：60s 正常、5s 错误恢复，保证性能与可用性
- 仅检查 Claude Code 客户端，其他客户端不受影响
- 添加完整单元测试覆盖版本提取、比对、上下文操作