Fix the clipped answer field + the doubled AI note; ordering only where it fits

UI bug from a phone screenshot (short answer, Czech):
- The textarea was flex-shrunk inside the slide's column (58px instead of
  ~82px), clipping the typed answer mid-line. Every direct child of a
  study/review/guide slide is now shrink-0 and the slide scrolls instead.
- Two AI disclaimers were visible at once: the activity's own after the
  grading box plus the feed's row. The activity-level copy is gone; the
  feed/guide row (which also carries the report control) is the single one.
  The phase-2 check now asserts the note sits below the graded feedback.
- The mobile suite's backdrop-tap check is deterministic too (the spring
  animation made the measured box mid-flight).

Ordering activities: the deck prompt now allows them only when the notes
hold a real sequence (chronological events, process stages, procedure steps,
a lifecycle, a ranked scale) and points at matching / multiple choice /
true-false when they do not - "sort these" was landing on decks with no
order at all.

Version 0.2.4, SW -> freezmo-v57.

components/homework/HomeworkGuide.tsx

@@ -187,7 +187,7 @@ export function HomeworkGuide({
             aria-label={t("homework.guide.stepOf", { n: stepIndex + 1, total: steps.length })}
             className="flex h-full snap-start snap-always items-stretch justify-center overflow-y-auto overscroll-y-contain"
           >
-            <div className="mx-auto flex min-h-full w-full max-w-xl flex-col gap-4 px-4 pb-24 pt-24 [justify-content:safe_center]">
+            <div className="mx-auto flex min-h-full w-full max-w-xl flex-col gap-4 px-4 pb-24 pt-24 [justify-content:safe_center] [&>*]:shrink-0">
               <div className="flex flex-wrap items-center gap-2">
                 <span className="tint-sky inline-flex items-center gap-1.5 rounded-full px-3 py-1 text-xs font-semibold ring-1 ring-white/50 backdrop-blur-sm">
                   {t("homework.guide.stepOf", { n: stepIndex + 1, total: steps.length })}
@@ -291,7 +291,7 @@ export function HomeworkGuide({
           aria-label={t("homework.guide.solution")}
           className="h-full snap-start snap-always overflow-y-auto overscroll-y-contain"
         >
-          <div className="mx-auto flex min-h-full w-full max-w-xl flex-col gap-4 px-4 pb-24 pt-24 [justify-content:safe_center]">
+          <div className="mx-auto flex min-h-full w-full max-w-xl flex-col gap-4 px-4 pb-24 pt-24 [justify-content:safe_center] [&>*]:shrink-0">
             <div className="flex flex-wrap items-center gap-2">
               <span className="tint-mint inline-flex items-center gap-1.5 rounded-full px-3 py-1 text-xs font-semibold ring-1 ring-white/50 backdrop-blur-sm">
                 {t("homework.guide.solution")}