fix(test): green dev tip validation

[arena-ai-coding-agent]

Issue for this PR

Closes anomalyco#37321 (anomalyco#37321)

Type of change

• Bug fix
• New feature
• Refactor / code improvement
• Documentation

What does this PR do?

This PR fixes test-only assumptions exposed by the finish-tool change. Scripted LLM fixtures explicitly opt out of the finish tool and reply-style prompt where exact legacy payloads are asserted. The HttpApi exerciser uses a local model catalog instead of making a network request, and its fake LLM configuration preserves legacy prompt behavior. CLI subprocess scenarios use the live clock because they exercise real subprocess wall-clock behavior; they remain concurrent. The TUI test now uses the current plugin-runtime API, and the generated client and SDK types are refreshed.

No production behavior is changed by these test and generated-artifact updates.

How did you verify your code works?

• GITHUB_ACTIONS=false bun turbo test
• bun run test:httpapi
• NODE_OPTIONS=--max-old-space-size=3072 bun turbo typecheck --concurrency=1
• bun run check:generated
• Oxlint on the changed files with zero errors

Screenshots / recordings

Not applicable; this PR does not change UI behavior.

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

If you do not follow this template your PR will be automatically rejected.

[github-actions]

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2. Add Fixes #<number> or Closes #<number> to this PR description

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[github-actions]

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