Add Prompt Builder sets/framing and harden mobile draft look settings.

Sets and beats filter by shot size; scenes reorder/delete; portrait links Prompt Builder; landscape queue collapses; per-engine look settings and prompt Clear persist across iOS resumes.

assets/css/display.css

@@ -686,6 +686,10 @@
   flex-direction: column;
 }
 
+.queue-col[data-collapsed='1'] {
+  min-width: 0;
+}
+
 .queue-head {
   display: flex;
   flex-shrink: 0;
@@ -695,6 +699,24 @@
   font-weight: 650;
 }
 
+.queue-toggle {
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+  border: 0;
+  background: transparent;
+  color: inherit;
+  font: inherit;
+  font-weight: 650;
+  cursor: pointer;
+  padding: 0;
+}
+
+.queue-toggle-mark {
+  color: var(--muted);
+  font-size: 12px;
+}
+
 .queue-badge {
   display: inline-grid;
   min-width: 1.25rem;