feat(vscode): show all agent questions in one form with multi-select support

[wbxl2000]

Related Issue

Resolve #2463

Problem

The question dialog treated every question as single-select and stepped through questions one by one with no way back: multi_select questions only captured the first clicked label, answered questions could not be changed, and individual questions could not be skipped even though partial answers are contract-legal.

What changed

Reworked the question dialog from a step-through wizard into a single scrollable form, following the semantics the TUI already established:

• All questions render at once; single-select keeps the existing filled-row style, multi-select rows toggle with a checkbox and stay put.
• Multi-select answers join selected labels with ', ' (same convention as the TUI); a per-question custom text is appended as an extra label for multi-select, and wins over the chosen option for single-select.
• One explicit Submit at the bottom collects everything; unanswered questions are skipped (with a hint), an all-empty submission keeps the dismiss semantics, and a Dismiss button resolves with no answers.
• The answers-record construction lives in a pure helper (buildQuestionAnswers) so it is unit-tested without webview component test infra.

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]

🦋 Changeset detected

Latest commit: 7abe7b2

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

This PR includes changesets to release 1 package

Name	Type
kimi-code	Patch

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[pkg-pr-new]

pnpm dlx https://pkg.pr.new/@moonshot-ai/kimi-code@7abe7b2

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commit: 7abe7b2

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Avoid submitting all questions from a custom field

When a request contains multiple questions and the user types a custom response for an earlier question, pressing Enter in this input immediately calls handleSubmit(), which sends the current partial answers and skips any remaining unanswered questions. In the new all-at-once form, Enter should only commit/close the current custom field or be ignored so users can finish the rest of the form before resolving the agent question.

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[wbxl2000]

Closing in favor of the direction taken by #2467 (step-through questions with back-navigation and explicit submission), which fixes the same multi-select limitation with an interaction model closer to the existing wizard. Thanks for the exploration here.