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新增 Access Token 输入方式，支持批量粘贴（每行一个）直接创建账号，
无需经过 OAuth 授权流程。
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- Change layout from fixed 3-column grid to vertical-first responsive
  columns (1 col for ≤4 items, 2 cols for ≤8, 3 cols for 9+)
- Add short aliases for all known model scope keys (e.g. COpus46, CSon46,
  G3PH, G3F) to reduce badge width
- Display countdown timer directly on each badge (supports h/m/s)
- Retain legacy scope aliases for backward compatibility

- Remove Gemini platform exclusion from model restriction UI in
  Create/Edit account modals (Gemini now supports model_mapping)
- Remove outdated Gemini model passthrough info cards
- Add model_mapping field to GeminiCredentials type
- Extend warmup request interception toggle to Antigravity platform
- Remove redundant try/catch in API key account creation
- Remove noisy gateway.request_completed debug log
- Reorganize Gemini model mapping sections in constants.go

Add Gemini model presets to BulkEditAccountModal for bulk model mapping.
Fix AccountStatusIndicator model rate limit grid layout using proper
grid container.

Add a dedicated CheckMixedChannel endpoint that allows the frontend
to pre-validate mixed channel risk before submitting create/update
requests. This improves UX by showing warnings earlier in the flow
instead of only after form submission.

Backend changes:
- Add CheckMixedChannelRequest struct and CheckMixedChannel handler
- Register POST /check-mixed-channel route
- Expose CheckMixedChannelRisk as public method on AdminService
- Simplify Create/Update 409 responses (remove details/require_confirmation)
- Add comprehensive handler tests and stub methods

Frontend changes:
- Add checkMixedChannelRisk API function and TypeScript types
- Refactor CreateAccountModal to precheck before step transition and submission
- Refactor EditAccountModal to precheck before update submission
- Replace pendingPayload pattern with action-based dialog flow

Extract applyInterceptWarmup utility to unify all credential building
call sites:
- Fix upstream account creation missing intercept_warmup_requests write
- Fix apikey edit mode missing else-branch to clear the setting
- Add backend unit test for IsInterceptWarmupEnabled
- Add frontend unit test for credentialsBuilder

The usage progress bar only matched claude-sonnet-4-5 and
claude-opus-4-5-thinking. After upgrading to 4.6, the backend returns
claude-sonnet-4-6/claude-opus-4-6-thinking which didn't match,
causing the Claude usage bar to not display.

- Add claude-sonnet-4-6 and claude-opus-4-6-thinking to the match list
- Rename label from "C4.5" to "Claude" for future-proofing

- 后端新增绝对重置时间字段计算（codex_5h_reset_at/codex_7d_reset_at）

- 前端统一窗口解析逻辑：绝对时间优先，updated_at+seconds 回退，过期自动归零

- 新增后端与前端单元测试，覆盖关键边界与异常场景

- 在 CreateAccountModal 为 Anthropic API Key 增加自动透传开关

- 创建请求写入 extra.anthropic_passthrough 并补充状态重置

- 新增 AccountHandler 单测，验证 extra 字段从请求到 CreateAccountInput 的透传

- 新增 Anthropic API Key 自动透传开关与后端透传分支（仅替换认证）

- 账号编辑页新增自动透传开关，默认关闭

- 优化透传性能：SSE usage 解析 gjson 快路径、减少请求体重复拷贝、优化流式写回与非流式 usage 解析

- 补充单元测试与 benchmark，确保 Claude OAuth 路径不受影响

- 后端新增 Sora2 邀请码与剩余额度探测，并补充对应结果解析
- Sora 测试流程补齐请求头与 Cloudflare 场景提示，完善单测覆盖
- 前端测试弹窗对 Sora 账号改为免选模型流程，并新增中英文提示文案
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- 新增并接通 Sora 专用 OAuth 接口与 ST/RT 换取能力
- 完成前端 Sora 授权、RT/ST 手动导入与账号创建流程
- 强化 Sora token 恢复、转发日志与网关路由隔离行为
- 补充后端服务层与路由层相关测试覆盖
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- Account-level cache TTL override: rewrite Anthropic cache_creation
  token classification (5m↔

1h) in streaming/non-streaming responses
- New DB field cache_ttl_overridden in usage_log for billing tracking
- Migration 055_add_cache_ttl_overridden
- Frontend: CacheTTL override toggle in account create/edit modals
- Ent schema regenerated for new usage_log fields
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- 将编辑与重新授权成功事件改为回传更新后的账号对象
- 在账号列表页按 id 就地补丁更新单行数据并保留运行时容量字段
- 单账号操作（刷新凭证/清错/清限流/临时不可调度重置）改为单行更新
- 后端增强 clear-rate-limit 接口，返回更新后的账号对象
- 同步前端 clearRateLimit API 类型定义
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

在编辑 OpenAI OAuth 账号时，若 codex_cli_only 从开启切换为关闭，
现改为显式写入 false，避免 extra 为空时后端忽略更新导致旧值残留。
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

新增 codex_cli_only 开关并默认关闭，关闭时完全绕过限制逻辑。
在 OpenAI 网关引入统一检测入口，集中判定账号类型、开关与客户端族。
开启后仅放行 codex_cli_rs、codex_vscode、codex_app 客户端家族。
补充后端判定与网关分支测试，并在前端创建/编辑页增加开关配置与回显。
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- OpenAI OAuth/API Key 统一支持自动透传开关，编辑页可开关\n- 透传模式仅替换认证并保留计费/并发/审计，修复 API Key responses 端点拼接\n- Usage 页面显示原始 User-Agent 且不截断，补充回归测试与清单

- Add groupID parameter to ListAccounts and ListWithFilters methods
- Implement account filtering by group ID in repository query
- Add group query parameter parsing in account handler
- Update all ListAccounts/ListWithFilters call sites with groupID parameter
- Add group filter UI component to AccountTableFilters
- Add i18n translations for group filter label in English and Chinese
- Update API contract and test stubs to reflect new signature
- Enable filtering accounts by their assigned groups in admin panel

后端新增 ValidateRefreshToken service 方法和 POST /oauth/refresh-token 端点，
前端新增 API/Composable/UI 集成，OAuthAuthorizationFlow i18n 动态化，
支持在 Antigravity 创建账号时批量粘贴 Refresh Token 自动验证并创建账号。

- 仅对 Codex CLI 且账号开启时走原样透传（只替换认证）

- 透传模式禁用工具修正/模型替换，并旁路解析 usage 用于计费

- 管理后台增加开关与文案，ops upstream error 记录 passthrough 标记
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- 后端新增 PreviewFromCRS 接口，允许用户先预览 CRS 中的账号
- 后端支持在同步时选择特定账号，不选中的账号将被跳过
- 前端重构 SyncFromCrsModal 为三步向导：输入凭据 → 预览账号 → 执行同步
- 改进表单无障碍性：添加 for/id 关联和 required 属性
- 修复 Back 按钮返回时的状态清理
- 新增 buildSelectedSet 和 shouldCreateAccount 的单元测试
- 完整的向后兼容性：旧客户端不发送 selected_account_ids 时行为不变

Merge functional changes from develop branch:
- Remove AntigravityQuotaScope system (claude/gemini_text/gemini_image)
- Replace with per-model rate limiting using resolveAntigravityModelKey
- Remove model load statistics (IncrModelCallCount/GetModelLoadBatch)
- Simplify account selection to unified priority→load→LRU algorithm
- Remove SetAntigravityQuotaScopeLimit from AccountRepository
- Clean up scope-related UI indicators and API fields

新增通过手动输入 Refresh Token 创建 OpenAI OAuth 账号功能，
参考 Anthropic sessionKey 批量创建方式：

- useOpenAIOAuth 添加 validateRefreshToken 方法
- accounts.ts 添加 refreshOpenAIToken API
- AuthInputMethod 类型新增 refresh_token 选项
- 支持多行输入 RT（每行一个）批量创建账号
- 账号名称自动累加后缀 #1, #2 等
- UI 显示 RT 数量徽章和批量创建提示
- 添加中英文 i18n 翻译

Upstream accounts now use the standard APIKey type instead of a dedicated
upstream type. GetBaseURL() and new GetGeminiBaseURL() automatically append
/antigravity for Antigravity platform APIKey accounts, eliminating the need
for separate upstream forwarding methods.

- Remove ForwardUpstream, ForwardUpstreamGemini, testUpstreamConnection
- Remove upstream branch guards in Forward/ForwardGemini/TestConnection
- Add migration 052 to convert existing upstream accounts to apikey
- Update frontend CreateAccountModal to create apikey type
- Add unit tests for GetBaseURL and GetGeminiBaseURL

- EditAccountModal: add Base URL / API Key fields for upstream type
- EditAccountModal: initialize editBaseUrl from credentials on upstream account open
- EditAccountModal: save upstream credentials (base_url, api_key) on submit
- CreateAccountModal: pass mixed_scheduling extra when creating upstream account

1. Frontend: replace hardcoded antigravityDefaultMappings with async
   fetch from GET /admin/accounts/antigravity/default-model-mapping,
   eliminating the duplicate data source that caused frontend/backend
   mapping inconsistency.

2. Backend: convert handleSmartRetry and antigravityRetryLoop from
   standalone functions to AntigravityGatewayService methods, enabling
   Redis cache sync (updateAccountModelRateLimitInCache) after both
   rate-limit write paths — long-delay branch and retry-exhausted branch.

Key changes:
- Upgrade model mapping: Opus 4.5 → Opus 4.6-thinking with precise matching
- Unified rate limiting: scope-level → model-level with Redis snapshot sync
- Load-balanced scheduling by call count with smart retry mechanism
- Force cache billing support
- Model identity injection in prompts with leak prevention
- Thinking mode auto-handling (max_tokens/budget_tokens fix)
- Frontend: whitelist mode toggle, model mapping validation, status indicators
- Gemini session fallback with Redis Trie O(L) matching
- Ops: enhanced concurrency monitoring, account availability, retry logic
- Migration scripts: 049-051 for model mapping unification

- 后端 DTO 新增 scope_rate_limits 字段，从 extra 提取限流信息
- 前端状态列显示 scope 级限流徽章（Claude/Gemini/Image）
- 清除速率限制时同时清除账号级和 scope 级限流（已有实现）

Cherry-picked from slovx2/sub2api: 66f49b67