Standardize create-flow option steps on one question-and-options layout and Selection sizes.

Method cards, chips, and the right rail now share the two-column shell; last options clear the footer fade, See all stays under the stack, and the left heading no longer jumps when the list expands.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/(app)/create/utils/createFlowScreenRegistry.ts

@@ -150,7 +150,7 @@ export function createFlowStepUsesCenteredTextLayout(
   return CREATE_FLOW_SCREEN_REGISTRY[step].centeredBodyBelowMd;
 }
 
-/** Steps whose main area uses the CardStack-style layout (`layoutKind: "card"`). */
+/** Steps whose Figma frame is a compact card stack (`layoutKind: "card"`). */
 export function createFlowStepUsesCardLayout(
   step: CreateFlowStep | null,
 ): boolean {