fix: replace retired claude model id in workflows

[dkottke-groq]

Why this is urgent

• claude-opus-4-1-20250805 was retired 2026-08-05. Anthropic returns a hard error for retired model IDs — no fallback, no silent upgrade — so this workflow fails as soon as Claude is invoked.

Changes

.github/workflows/claude-code-review.yml

• model claude-opus-4-1-20250805 (retired) -> claude-opus-5

.github/workflows/claude.yml

• model claude-opus-4-1-20250805 (retired) -> claude-opus-5

Input mapping follows the official v1 migration guide: direct_prompt→prompt, and model/allowed_tools/disallowed_tools/max_turns/custom_instructions→claude_args; timeout_minutes moves to the job's timeout-minutes; claude_env becomes a settings env object.

Verification

• actionlint clean on every changed file.
• Each file parses as YAML and every remaining with: key is a real input declared by action.yml at v1.
• Every generated claude_args was run through the action's own tokenizer (shell-quote + stripShellComments, same code path as parse-sdk-options.ts) and asserted to yield byte-identical values to the inputs it replaced.
• No retired model ID remains in live YAML.

[dkottke-groq]

The 8 failing checks here are pre-existing on this repo and unrelated to this change, which only touches .github/workflows/.

Every job dies in the Install dependencies step, before any code or workflow logic runs:

× No solution found when resolving dependencies for split (markers: python_full_version >= '3.13'):
╰─▶ Because there is no version of inspect-ai==0.3.141 and your project
    depends on inspect-ai==0.3.141, we can conclude that your project's
    requirements are unsatisfiable.

inspect-ai==0.3.141 is not on PyPI (the current release series is 0.3.252), so uv sync --group dev cannot resolve. PR #350 fails the same way, so this needs a separate dependency-pin fix and is not a blocker for this migration.