ci(repo): move the AI review pipeline's Claude pass to claude-opus-5-5

[Coly010]

Summary

Moves the AI review pipeline's Claude pass (claude-review) from claude-opus-5
to claude-opus-5-5. The Codex side stays on gpt-6-sol from #6731.

The repo's ANTHROPIC_API_KEY doesn't have access to every model (it returned 404
for claude-fable-5 when the pipeline was first set up), so the key was
checked before making this change. A throwaway push-triggered workflow on a
now-deleted branch called GET /v1/models/{id} with the secret and got HTTP 200
for both claude-opus-5 and claude-opus-5-5
(run 35860464428).

The pinned Claude Code also has to move. The first automatic review on this PR
failed in claude-review because the API rejects 2.1.247 for this model
("version 2.1.280 or newer is required"), so the pin goes to 2.1.280. That is
npm's current latest, published 2026-09-22. The stable tag is still on
2.1.267, which is too old for this model.

Linked issue

No linked issue — maintainer change.

Checklist

• The PR title follows Conventional Commits (e.g. fix(cli): …).
• Tests added or updated for the change. — n/a, workflow configuration only.
• From the repository root, pnpm check:all passes; relevant package tests pass for every touched workspace, and pnpm types:check passes for each touched TypeScript workspace (or workspace declaring it).

🤖 Generated with Claude Code

[github-actions]

Superseded by a newer AI review

🤖 AI Review

Claude’s independent review did not complete, so only the Codex review was available. The PR changes one workflow model identifier; inspection of the workflow found no verifiable issue.

Findings

No issues found.

Stats

Claude findings: 0 · Codex findings: 0 · Confirmed: 0 · Refuted: 0 · Uncertain: 0

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Models: claude-opus-5-5 + gpt-6-sol · Trigger: auto · Workflow run

This review runs once per PR. A maintainer can request another with a /ai-review comment.

[github-actions]

🤖 AI Review

Both independent reviews reported no findings. Inspection of the changed workflow confirmed that the new Claude model is used consistently and the CLI install remains pinned to an exact version. No actionable issue was found.

Findings

No issues found.

Stats

Claude findings: 0 · Codex findings: 0 · Confirmed: 0 · Refuted: 0 · Uncertain: 0

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Models: claude-opus-5-5 + gpt-6-sol · Trigger: manual · Workflow run

This review runs once per PR. A maintainer can request another with a /ai-review comment.