fix(gateway): claude_code_only 不再误拦截官方 Claude Code 的 count_tokens 与非流式 messages 请求#2919
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fix(gateway): claude_code_only 不再误拦截官方 Claude Code 的 count_tokens 与非流式 messages 请求#2919wucm667 wants to merge 1 commit into
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背景
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claude_code_only后，/v1/messages/count_tokens因路径包含messages会进入 Claude Code messages 严格校验。官方 Claude Code CLI 的 count_tokens 辅助请求通常不携带完整 system prompt 或metadata.user_id，导致账号选择阶段误判为非 Claude Code 客户端。issue 中还提到部分
stream=false /v1/messages请求，但当前没有提供可稳定区分的真实请求样本。为避免第三方客户端仅伪造 UA 就绕过普通 messages 主路径校验，本 PR 不额外放宽普通/v1/messages。改动
/messages/count_tokens路径新增 Claude Code UA-only 放行，和非 messages 路径保持一致。/v1/messages的 system prompt、X-App、anthropic-beta、anthropic-version、metadata.user_id严格校验。max_tokens=1+ Haiku 探测请求 bypass 行为不变。测试
go test -tags=unit ./...golangci-lint run ./...Fixes #2909