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.

lib/prompts.ts

@@ -86,6 +86,11 @@ export const ACTIVITY_JSON_SPEC = `Each activity is one JSON object with a "type
    { "type": "matching", "topic": "short label", "instruction": "Match each term to its definition.", "pairs": [{ "term": "Osmosis", "definition": "diffusion of water across a membrane" }], "explanation": "..." }
 
 6. ordering - 3 to 7 items given in the CORRECT order (the app shuffles them)
+   Use it ONLY when the notes contain a real sequence the learner can reason about: historical or
+   chronological events, the stages of a process, steps of a procedure, a lifecycle, a ranked scale.
+   If the notes only list unrelated things (works, authors, terms, places, values), do NOT invent an
+   order for them — use matching, multiple choice or true/false instead. One or two ordering cards
+   per deck is usually plenty.
    Items must NEVER contain dates, years, clock times, step numbers or ordinals ("first", "step 2") —
    the learner has to work out the order from what each item says, not read it off.
    { "type": "ordering", "topic": "short label", "instruction": "Put the events in the order they happened.", "items": ["The Allies land in Normandy", "Paris is liberated", "Germany surrenders"], "explanation": "..." }