feat(cashier): carry forward yesterday's denomination count into Day Open, warn on a mismatch

The Day Open form's note/coin table started at zero even though the
branch's own closing count from the day before was already on record --
whoever opened the day had to re-key numbers that were already known.
It now auto-fills from that closing count, flags any row a manual edit
moves away from it, and shows a live Tallied/Short/Excess comparison
against it -- so a short or excess opening count is visible before the
day is opened, not discovered later. A reason is required once a mismatch
exists, matching the new backend enforcement.

Also fixes the register table's date chip wrapping onto two lines when
the column narrows.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/app/cashier/cashier-shared.scss

@@ -206,6 +206,7 @@
   border-radius: 6px;
   font-size: 12px;
   font-weight: 700;
+  white-space: nowrap;
   background: linear-gradient(135deg, #ecfeff, #cffafe);
   color: #155e75;
   border: 1px solid #a5f3fc;