feat(tui): allow shorthand aliases for managed Kimi Code models in /model

[bowenliang123]

Related Issue

No prior issue — this is a small UX convenience improvement.

Problem

In the TUI, /model accepts an alias as its argument, but the model picker shows human-readable names such as K3 under the Kimi Code provider. The actual configured alias is kimi-code/k3, so typing /model k3 (or /model K3) currently fails with Unknown model alias: k3. Users either have to use the interactive picker or remember the full kimi-code/<id> key.

What changed

In handleModelCommand, when the exact alias is not found and the input contains no /, the command now falls back to kimi-code/<input>. This lets users open the model picker for managed Kimi Code models with a short, intuitive name.

• Exact aliases still take priority, so a user-defined k3 would not be shadowed.
• Only inputs without / get the fallback.
• If the resolved alias exists, the model picker opens preselected so the user can still choose the thinking effort before switching.
• Added a test in kimi-tui-message-flow.test.ts covering the shorthand resolution.
• A changeset has been generated for @moonshot-ai/kimi-code.

Usage comparison

Before	After
/model k3 → Unknown model alias: k3	/model k3 → opens picker for kimi-code/k3
/model K3 → Unknown model alias: K3	/model K3 → Unknown model alias: K3 (still case-sensitive; use the lowercase model id)
/model kimi-code/k3 → opens picker	/model kimi-code/k3 → still opens picker
/model kimi-for-coding → Unknown	/model kimi-for-coding → opens picker for kimi-code/kimi-for-coding

Checklist

• I have read the CONTRIBUTING document.
• I have linked a related issue, or explained the problem above. (No issue; problem explained above.)
• I have added tests that prove my feature works.
• Ran gen-changesets skill, or this PR needs no changeset.
• Ran gen-docs skill, or this PR needs no doc update.

[changeset-bot]

🦋 Changeset detected

Latest commit: cbb02c1

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@moonshot-ai/kimi-code	Patch

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