feat(cch): add seeds for Claude Code up to 2.1.286

[github-actions]

Summary

Automated cch seed extraction for 1 Claude Code version(s).

• Versions: 2.1.286
• WORKER_VERSION pinned to: 2.1.286
• Extracted by: scripts/extract-cch-seed.ts
• Method: Oracle pair generation via local capture server + binary scan

This PR updates VERSION_SEEDS and WORKER_VERSION in packages/gateway/src/cch.ts
so the gateway can sign billing headers for these Claude Code versions.

[github-actions]

Coverage Results 📊

✅ Patch coverage is 100.00% (1 of 1 changed executable lines covered; target 80%).
Project statement coverage is 85.04% (unchanged from base (5a05326) to head (e7dbd89)).

Changed files with executable lines (1)

File	Patch coverage	Changed executable lines
packages/gateway/src/cch.ts	100.00%	1/1 covered

Coverage diff

@@            Coverage Diff             @@
##          main     #1961       +/-##
==========================================
  Coverage    85.04%    85.04%        —%
==========================================
  Files          318       318         —
  Tracked lines     49619     49619         —
  Branches     40709     40709         —
==========================================
- Hits         42199     42197        -2
- Misses        7420      7422        +2
+ Partials      4295      4290        -5

---

Generated by Coverage Action

[github-actions]

PR Preview Action v1.8.1
Preview removed because the pull request was closed.
2026-10-01 10:02 UTC