- "Freeze my deck" is now a full-width (w-full) button in its sticky bar,
like "Make my homework", instead of a compact left-aligned button in a
flex row.
- The status/validation line ("Add a photo or a document (or some text) to
start.") moved from above the button to centred directly underneath it,
with the same 12px muted styling the homework flow uses.
- Both flows now share the Button size="lg" shape (44px tall, 14px radius,
same muted disabled chip, centred text); hover/disabled behaviour comes
from the same .btn-primary/.btn-disabled classes.
Service worker: freezmo-v12.
Verified: CTA-parity suite 32/32 (full-width ratio ~1.0 at 390px and 1280px,
44px height, centred helper under the button on both pages, identical radius
and disabled chip, enabled ice gradient), mobile 51/51, i18n 27/27, desktop
regression 74/74. Lint + build clean.