GitLab

- 20 unit tests for deriveOpenAIContentSessionSeed covering:
  - Empty/nil inputs, model-only, stable across turns
  - Different model/system/first-user produce different seeds
  - Tools, functions, developer role, structured content
  - Responses API: input string, input array, instructions, input_text typed items
  - JSON canonicalization (whitespace/key-order insensitive)
  - Prefix presence, empty tools ignored, messages preferred over input
- 3 integration tests for GenerateSessionHash content fallback:
  - Content fallback produces stable hash
  - Explicit signals override content fallback
  - Empty body still returns empty hash

When no explicit session signals (session_id, conversation_id, prompt_cache_key)
are provided, derive a stable session seed from the request body content
(model + tools + system prompt + first user message) to enable sticky routing
and prompt caching for non-Codex clients using the Chat Completions API.

This mirrors the content-based fallback already present in GatewayService.
GenerateSessionHash, adapted for the OpenAI gateway's request formats (both
Chat Completions messages and Responses API input).

JSON fragments are canonicalized via normalizeCompatSeedJSON to ensure
semantically identical requests produce the same seed regardless of
whitespace or key ordering.

Closes #1421

fix(openai): preserve bare gpt-5.3-codex-spark across forwarding paths

Fix Gemini CLI 404s for gemini-3.1-pro-preview-customtools

feat(gateway): Cache-Driven RPM Buffer

feat(group-filter): 分组账号过滤控制 — require_oauth_only + require_privacy_set

feat(antigravity): 令牌刷新失败及创建账号时也设置隐私

- buffer 公式从 baseRPM/5 改为 concurrency + maxSessions
  保留 baseRPM/5 作为 floor 向后兼容
- 粘性路径 fallback 新增 [StickyCacheMiss] 结构化日志
  reason: rpm_red / gate_check / session_limit / wait_queue_full / account_cleared
- session_limit 路径跳过 wait queue 重试（RegisterSession 拒绝无副作用）
- 典型配置 buffer 从 3 提升至 13，大幅减少高峰期 Prompt Cache Miss
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

为 OpenAI/Antigravity/Anthropic/Gemini 分组新增两个布尔控制字段：
- require_oauth_only: 创建/更新账号绑定分组时拒绝 apikey 类型加入
- require_privacy_set: 调度选号时跳过 privacy 未成功设置的账号并标记 error

后端：Ent schema 新增字段 + 迁移、Group CRUD 全链路透传、
      gateway_service 与 openai_account_scheduler 两套调度路径过滤
前端：创建/编辑表单 toggle 开关（OpenAI/Antigravity/Anthropic/Gemini 平台可见）
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

- token_refresh: 不可重试错误和重试耗尽两条路径添加 ensureAntigravityPrivacy
- admin_service: CreateAccount 为 Antigravity OAuth 账号异步设置隐私
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Anthropic compat requests normalize reasoning suffixes before forwarding, but the account mapping step was still using the raw request model. Resolve billing and upstream models from the normalized compat model so explicit account mappings win over fallback defaults.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent

)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

# Conflicts:
#	backend/internal/service/openai_gateway_messages.go

Add a purple dashed line showing cache hit rate percentage
(cache_read / (cache_read + cache_creation)) on a secondary
right Y-axis (0-100%). Applies to both user and admin dashboards.

feat(antigravity): progressive penalty for consecutive INTERNAL 500 errors

fix(billing): 计费始终使用用户请求的原始模型，而非映射后的上游模型

fix(api-key):软删除apikey后key没有被释放后续无法再自定义相同的key

fix(admin): fix Safari system log select height

fix(i18n): 修复 Sora 存储配置页面表格列头「存储桶」翻译缺失

fix(gateway): normalize gpt-5.4-xhigh for /v1/messages

Feat/add file upload oauth scope

fix(lifecycle): TokenRefreshService Stop() 防重复 close

修复缺少 refresh_token 时被临时停调度

修复重置状态时未清理临时停调度

使用 sync.Once 包裹 close(stopCh)，避免多次调用 Stop() 时
触发 panic: close of closed channel。