feat(03-02): update Map light theme CSS and add theme-change re-render

- Update --map-country to warm cream (#f0e8d8) for Voyager-style land
- Update --map-stroke to warm border (#c8b8a8) complementing cream land
- Subtler blue grid (#b0c8d8) for light mode
- Add theme-changed event listener in Map.ts resetting baseRendered flag
- Dark theme map values unchanged

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/components/Map.ts

@@ -187,6 +187,11 @@ export class MapComponent {
     this.setupZoomHandlers();
     this.loadMapData();
     this.setupResizeObserver();
+
+    window.addEventListener('theme-changed', () => {
+      this.baseRendered = false;
+      this.render();
+    });
   }
 
   private setupResizeObserver(): void {

src/styles/main.css

@@ -123,9 +123,9 @@
 
   /* Map */
   --map-bg: #e8f0f8;
-  --map-grid: #c0d8e8;
-  --map-country: #d8e8d8;
-  --map-stroke: #90b8a0;
+  --map-grid: #b0c8d8;
+  --map-country: #f0e8d8;
+  --map-stroke: #c8b8a8;
 }
 
 * {