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fix(openai): restrict capacity cooldown to explicit overload

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Count only confirmed capacity rejections toward account cooldown, excluding
generic server failures and unrecognized upstream errors. Classify streamed
invalid_prompt failures as invalid requests, matching official Codex.

Cover HTTP and WebSocket failures around the cooldown threshold while
preserving retry boundaries, upstream error payloads, and Smart scoring.
Update the capacity cooldown contract in the API and architecture docs.

Validation: Rustfmt, strict workspace Clippy, and all backend suites with
isolated PostgreSQL 18 / Redis 8 (--test-threads=4).

Reference: openai/codex@7498521d28,
codex-rs/codex-api/src/sse/responses.rs.

Refs #177

Co-authored-by: Codex <noreply@openai.com>
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Zyy
2026-09-20 14:01:29 +08:00
co-authored by Codex
parent 798d4f518e
commit c0ad2ae656
5 changed files with 121 additions and 34 deletions
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docs/api.md
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@@ -1153,8 +1153,9 @@ User-Agent 使用 `grok-shell/<版本> (<系统>; <架构>)`，其中 `arm64`
### 账号自动冻结
账号自动冻结（`accountAutoFreezeEnabled`）默认关闭。启用后，在统计窗口内按尝试累计容量类上游错误（`server_is_overloaded`
等与 5xx 不可用），达到阈值后把该账号冻结为带恢复倒计时的 `rate_limited` 状态。`accountAutoFreezeThreshold`
账号自动冻结（`accountAutoFreezeEnabled`）默认关闭。启用后，在统计窗口内按尝试累计明确的上游容量拒绝
（`server_is_overloaded`、`slow_down` 或结构化错误中的明确过载提示），普通 5xx、`invalid_prompt` 和未识别的上游错误不计入。
达到阈值后把该账号冻结为带恢复倒计时的 `rate_limited` 状态。`accountAutoFreezeThreshold`
取值 2～1,000（默认 12，按普通请求的 attempt 计数，含请求内同账号重试，不含诊断探测与本地连接保护错误）；`accountAutoFreezeWindowSeconds`
取值 60～3,600（默认 600，随每次失败滑动顺延）；`accountAutoFreezeDurationSeconds` 取值 300～604,800
（默认 7,200，即 2 小时，探测失败后按该时长顺延）。`accountAutoFreezeProbeEnabled` 开启时恢复 worker