fix(vscode): show provider hints in model selector

[marius-kilocode]

The normal model selector currently hides provider names unless the list is searched or the model is favorited. This makes duplicate model names ambiguous when browsing the default grouped list, even though the search view already exposes the needed context.

Render the existing provider hint beside every model row, including recommended, recent, grouped, and favorite entries. The hint keeps the compact styling already used by search results, while the focused selector coverage verifies the normal-list behavior and keeps provider-group keyboard targeting deterministic.

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (3 files)

• .changeset/show-model-provider-hints.md
• packages/kilo-vscode/tests/model-selector-accessibility.spec.ts
• packages/kilo-vscode/webview-ui/src/components/shared/ModelSelector.tsx

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_{Reviewed by kimi-k3 · Input: 70.7K · Output: 5.1K · Cached: 293.2K}

_{Review guidance: REVIEW.md from base branch main}