Fix unpaid-Vorkasse notice layout: full page width, more top spacing

Reused paidBadgeRow, which lives inside summary's narrow flex-end
column meant for the short one-line paid confirmation — the longer
instruction shrank to content width and read as squeezed under the
summary card. Moved to its own full-width sibling row, left-aligned.

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

README.md

@@ -31,6 +31,8 @@ One canonical implementation, consumed by both repos, makes this class of drift
 
 **2026-07-25, Vorkasse fixes (v0.2.3).** `isPaidImmediately()` matched `paymentMethodTitle` with an exact `!==` check against the literal string `"Überweisung"` — the consuming shop renamed its Vorkasse row to `"Überweisung (Vorkasse)"` the same day (to make room for a possible future *automated* bank-transfer method, e.g. "Sofortüberweisung", routed through a real payment gateway), which would have silently made every unpaid Vorkasse invoice show "✓ Bereits beglichen". Changed to `startsWith("Überweisung")` — same "only Überweisung is the named exception" design, tolerant of a suffix qualifier on that one title. Also added an explicit instruction in the unpaid case (previously the *absence* of the paid confirmation was the only signal, no actual text): "Bitte überweisen Sie den Rechnungsbetrag unter Angabe der Bestellnummer … auf die unten stehende Bankverbindung. Die Bestellung wird nach Zahlungseingang bearbeitet (in der Regel innerhalb von 1–2 Werktagen)." — same plain-text treatment as the paid confirmation (`unpaidNoticeText`, muted rather than green — an unpaid Vorkasse invoice isn't a problem, just an expected pending state).
 
+**2026-07-25, unpaid-notice layout fix (v0.2.4).** The new unpaid-Vorkasse instruction (v0.2.3) reused `paidBadgeRow`, which lives inside `summary`'s `alignItems: "flex-end"` column (240pt-wide, designed for the short one-line paid confirmation) — so the longer two-sentence instruction shrank to content width and read as squeezed under the narrow summary card instead of a proper full-width note. Moved to its own sibling row (`unpaidNoticeRow`, `width: "100%"`, `marginTop: 20` vs. `paidBadgeRow`'s 10) outside `summary` entirely, left-aligned instead of right-aligned.
+
 ## How this is consumed
 
 Not published to npm — installed as a git dependency: