Add MiniMax-M3 and MiniMax-M2.7 to model registry

[octo-patch]

Reason: add target provider/model to existing provider registry.

Summary

• Register MiniMax-M3 and MiniMax-M2.7 under the MiniMax provider in the Works Best With model registry.
• Add exact lookup coverage for both registered models.

Test plan

• npm test -- src/__tests__/lib/works-best-with.test.ts
• npm run lint

Added MiniMax-M3 to the Works Best With model registry (under the MiniMax provider) and extended the model-grouping/getModelInfo test expectations to include MiniMax models—verifying slugs like minimax-m3 (and minimax-m2-7) return { name, provider: "MiniMax" } and that getModelsByProvider groups results under the MiniMax provider key.

[coderabbitai]

📝 Walkthrough

Walkthrough

Added the minimax-m3 model with display name MiniMax-M3 and provider MiniMax, and expanded tests for MiniMax model information and provider grouping.

Changes

MiniMax model addition

Layer / File(s)	Summary
Add MiniMax model and test coverage src/lib/works-best-with.ts, src/__tests__/lib/works-best-with.test.ts	Adds minimax-m3 to AI_MODELS, verifies MiniMax model information for supported slugs, and asserts the grouped result includes a MiniMax provider key.

Estimated code review effort: 1 (Trivial) | ~2 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the main change: adding MiniMax model entries to the registry.

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[octo-patch]

Updated the registry to include both MiniMax-M3 and MiniMax-M2.7, with exact lookup coverage for each model. I ran npm test -- src/__tests__/lib/works-best-with.test.ts (31 tests passed) and npm run lint (0 errors).