Files
sub2api/backend/tools
erio 6d0e056244 feat(fingerprint): Claude Code CLI fingerprint mimicry suite (v0.1.114.1)
Squash-merge feat/fingerprint-mimic into release/custom-0.1.114.

Functional changes:
- TLS ClientHello mimicry: 17→52 cipher suites, ALPN http/1.1 only,
  X25519MLKEM768, JA3/JA4 aligned with official CLI baseline
- HTTP layer: User-Agent 2.1.112 sdk-cli, 3 new anthropic-beta tokens,
  Stainless headers synced
- Sidecar traffic: usage poll + count_tokens injection + startup probe
  (three fire-and-forget channels with jittered intervals)
- Sticky session UUID: per-account metadata.user_id reuse via Redis,
  WithSessionHash propagation through gateway
- 429 no-switch: short-circuit on rate-limit instead of cross-account fail-over
- Admin UI: per-account "randomize fingerprint" button + ConfirmDialog +
  i18n (zh/en, 9 keys)

Engineering hardening (fixes carried over from hai/snapshot):
- safe.Go/Run package: panic-recovering goroutine helper with slog
- redis.Nil treated as cache miss in identity cache
- SOCKS5 dialer uses ContextDialer for ctx cancellation propagation
- Token refresh selects on stopCh during retry backoff
- Sidecar goroutines wrapped with safe.Go
- .gitattributes forces LF for *.json (fixes baseline file CRLF drift)

Refactoring (zero behavior change):
- sidecar probe constants centralized
- identity_service rewrite preflight extracted into helpers
- capture_fingerprint tool split from 894 lines into 9 files
- gofmt sweep on all hai-imported files

Tests:
- safe package: panic recovery + attrs propagation
- tlsfingerprint: SOCKS5 dialer + capture parity
- identity sticky-session preflight paths (early-return + cache-hit)
- sidecar probe: jittered interval + dry-run
- token refresh: graceful shutdown during backoff

Beta-validated on 0.1.112.21 (commit 565da163 of feat/fingerprint-mimic).
Bumps VERSION 0.1.112.20 -> 0.1.114.1.
2026-04-18 16:07:36 +08:00
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