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feat: Claude Code 2.1.88 源码级指纹还原
基于 Claude Code 2.1.88 反编译源码,完成全面的反追踪指纹还原:

1. 版本升级 2.1.87 → 2.1.88(constants.go, identity_service.go, proxy.js)
2. 新增 6 个 beta header 常量(task-budgets, token-efficient-tools, structured-outputs, advisor, web-search)
3. 更新所有组合 beta header 字符串,加入 context-1m, redact-thinking, effort 等
4. 注入 x-anthropic-billing-header attribution block 到 system prompt 首位
   - 完整复刻 fingerprint 算法: SHA256(salt + msg[4,7,20] + version)[:3]
   - 正确省略 cch 字段(npm 版行为,非原生二进制)
5. X-Claude-Code-Session-Id: 有则同步,无则按 account 生成
6. x-client-request-id: 每请求自动生成 UUID
7. Bootstrap 预热: 模拟 GET /api/claude_cli/bootstrap(per-account, 1h cooldown)
8. 停止无条件剥离 temperature/tool_choice(与真实 CLI 行为一致)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-31 21:57:51 +08:00
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