✨Feature: implement return to town and resume dungeon flow with state management

src/styles.css

@@ -156,6 +156,10 @@ select {
   grid-column: span 12;
 }
 
+.panel-town-hub {
+  grid-column: span 8;
+}
+
 .panel-header {
   display: flex;
   justify-content: space-between;
@@ -217,6 +221,13 @@ select {
   color: rgba(244, 239, 227, 0.76);
 }
 
+.town-summary-grid {
+  display: grid;
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+  gap: 0.75rem;
+  margin-top: 1rem;
+}
+
 .room-title {
   margin: 0 0 0.35rem;
   font-size: 1.5rem;
@@ -393,4 +404,8 @@ select {
   .stat-strip {
     grid-template-columns: repeat(2, minmax(0, 1fr));
   }
+
+  .town-summary-grid {
+    grid-template-columns: 1fr;
+  }
 }