feat(models): add openrouter/elephant-alpha to preferredModels

[kilo-code-bot]

Summary

• Adds openrouter/elephant-alpha to preferredModels above CLAUDE_OPUS_CURRENT_MODEL_ID in apps/web/src/lib/models.ts
• Updates the models approval test to include openrouter/elephant-alpha in the expected models list

Verification

• Reviewed diff manually; changes are additive string insertions with no type implications

Visual Changes

N/A

Reviewer Notes

N/A

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (2 files)

• apps/web/src/lib/models.ts
• apps/web/src/tests/openrouter-models-config.test.ts

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_{Reviewed by gpt-5.4-20260305 · 191,309 tokens}

[arimesser]

@chrarnoldus how do we add a free label?

[chrarnoldus]

happens magically