Add Claude Opus 4.5 to built-in Claude models

[juliusmarminge]

Summary

• Registers claude-opus-4-5 as a built-in Claude model in ClaudeProvider with display name Claude Opus 4.5.
• Configures capabilities: reasoning effort levels (low / medium / high default / max), fast mode enabled, no thinking toggle, no extra context-window options, no prompt-injected effort levels.

Testing

• bun fmt, bun lint, and bun typecheck (not run in this session).
• In the app, open model selection for Claude and confirm Claude Opus 4.5 appears and can be selected.
• Optional: start a short session with the new model and confirm requests succeed against your Anthropic setup.

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Note

Low Risk
Low risk: this only extends the built-in model registry/metadata for Claude without changing auth, execution, or request logic.

Overview
Adds Claude Opus 4.5 (claude-opus-4-5) to the built-in Claude model list in ClaudeProvider, including its advertised capabilities (reasoning effort levels with high default, supportsFastMode: true, and no context-window or prompt-injected effort options).

^{Reviewed by Cursor Bugbot for commit bf3edd8. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Add Claude Opus 4.5 to built-in Claude models

Adds a new entry for claude-opus-4-5 (Claude Opus 4.5) to the BUILT_IN_MODELS array in ClaudeProvider.ts. The model supports reasoning effort levels (low, medium, high, max) with high as the default, and has fast mode enabled.

^{Macroscope summarized bf3edd8.}

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feature/feat/claude-opus-4-5-model

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[macroscopeapp]

Approvability

Verdict: Approved

This PR adds a new Claude Opus 4.5 model entry to the built-in models configuration array. The change is purely additive, follows existing patterns exactly, and doesn't modify any existing behavior.

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