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KRATOS fb3277f46e feat(tui): tabbed ask_user questionnaire in the composer with suggested answers (#327)
* feat(tui): tabbed ask_user questionnaire rendered in the composer

Redesign the interactive ask_user prompt to match the requested mockup: when a
question is raised the composer text box becomes the questionnaire.

- Multi-question prompts render as a row of TABS (one per question + a trailing
  Confirm tab). Tab / Shift+Tab switch questions, answers are given in any order,
  and Enter on Confirm submits them all. A single-question prompt submits on
  answer (no Confirm step) and shows no tab row.
- Each option can carry a one-line DESCRIPTION (contract: per-option
  optionDescriptions, or option objects {label, description}); options render
  numbered with the description dimmer underneath and the recommended one tagged.
- Per-question optional `header` gives each tab a short title (falls back to a
  trimmed question).
- Rendered in the composer/footer region (footerView), replacing the text box
  while active, instead of a scrolling transcript card.
- Keys: Tab move · ↑↓ select · Enter confirm · Esc dismiss; a printable key in
  the picker drops into free-text; Esc from "type your own" returns to the picker;
  multi-select questions are free-text with the options shown as suggestions.
- Headless unaffected (zero exec never wires OnAskUser).

Removed the old single-question sequential state (cursor/typing/index,
renderFocusedAskUserPrompt, resolveAskUser). Tests rewritten for the tabbed flow
(picker default, type-your-own, multi-question tabs + Confirm, Esc dismiss,
descriptions render). make build / go vet / go test ./... -race / make lint green.

* fix(tui): ask_user questionnaire renders on the black terminal canvas

It was painting a gray panel background (styledBlockFill with zeroTheme.panel +
onPanel-wrapped foregrounds). Since the questionnaire replaces the composer, it
should match it: bare foregrounds on the terminal canvas (black) with the
composer's lineStrong border and no fill. The lime cursor/badge highlights and
the recommended tag stay.

* fix(tui): address PR review — schema/parser alignment, single-question Tab

- ask_user schema: options.items is declared as string, so advertise only the
  string form (descriptions go via the parallel optionDescriptions array). The
  parser stays object-tolerant defensively, but the schema no longer tells
  strict-schema providers to send objects it would reject.
- moveAskUserTab no-ops for single-question prompts (no tab strip / Confirm tab),
  so Tab/Shift+Tab can't move the prompt into the hidden Confirm state. Test added.
2026-06-27 17:41:48 +05:30
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