fix(compare): repair the mobile add-school modal

The 'add school' modal passed no title to Modal, so its header held only
the close button — shoved to the far left by justify-content:space-between
in an otherwise-empty bar — while the real title was rendered separately
inside the content. Pass the title to Modal so the header reads title
(left) + close (right), and drop the duplicate in-content heading.

Also: the mobile full-width result button targeted a dead .addButton
selector (the button never had that class), so it rendered inconsistently
— give the button a real module class and full width on mobile, tighten
the stacked cards, and give the bottom sheet a stable min-height so its
empty state isn't a tiny stub.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0146VHeLAWjDVE2B5uU67jCB

nextjs-app/components/SchoolSearchModal.module.css

@@ -2,14 +2,6 @@
   padding: 1.5rem;
 }
 
-.title {
-  font-size: 1.5rem;
-  font-weight: 700;
-  color: var(--text-primary, #1a1612);
-  margin-bottom: 1.5rem;
-  font-family: var(--font-playfair), 'Playfair Display', serif;
-}
-
 .warning {
   background: var(--accent-gold-bg);
   border: 1px solid var(--accent-gold, #c9a227);
@@ -119,12 +111,16 @@
   font-size: 1rem;
   font-weight: 600;
   color: var(--text-primary, #1a1612);
-  margin-bottom: 0.5rem;
+  margin-bottom: 0.25rem;
   white-space: nowrap;
   overflow: hidden;
   text-overflow: ellipsis;
 }
 
+.resultButton {
+  flex: 0 0 auto;
+}
+
 .schoolMeta {
   display: flex;
   gap: 1rem;
@@ -159,21 +155,21 @@
     padding: 1rem;
   }
 
-  .title {
-    font-size: 1.25rem;
-  }
-
+  /* Compact stacked card: name + meta, then a full-width action so the tap
+     target is obvious and the card doesn't waste vertical space. */
   .resultItem {
     flex-direction: column;
     align-items: stretch;
+    gap: 0.625rem;
+    padding: 0.875rem;
   }
 
-  .addButton {
+  .resultButton {
     width: 100%;
   }
 
   .schoolMeta {
-    flex-direction: column;
-    gap: 0.25rem;
+    flex-wrap: wrap;
+    gap: 0.25rem 1rem;
   }
 }