fix(vscode): preserve multi-question answers

[hogeheer499-commits]

Related Issue

Resolves #1880

The VS Code dialog submitted the answer to questions[0] immediately, so any remaining questions in the same AskUserQuestion request were dropped.

The dialog now walks through the questions in order and submits once, after the last answer. Selection and custom-input state are reset between questions, and multi-question prompts show the current position.

I added a jsdom regression test covering two questions and verified that nothing is submitted after the first answer. The full VS Code suite passes (289 tests), along with both typechecks and the production webview build. Oxlint reports no errors; its four shorthand-arrow warnings were already present.

There is no changeset because the VS Code extension is private rather than part of the published @moonshot-ai/kimi-code package. This restores existing behavior, so no documentation change is needed.

Checklist

• I have read the CONTRIBUTING document.
• I have linked a related issue, or explained the problem 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]

⚠️ No Changeset found

Latest commit: e81d586

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR