Fix ADS-B dashboard mobile layout and map rendering

- Add mobile CSS for dashboard to allow scrolling and proper stacking
- Set explicit height for map container on mobile (50vh min 300px)
- Remove sidebar max-height restriction on mobile
- Add map invalidateSize() on init, resize, and orientation change
- Fix controls bar wrapping and touch-friendly zoom controls
- Simplify header layout on mobile

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

templates/adsb_dashboard.html

@@ -1392,8 +1392,25 @@ sudo make install</code>
 
             // Draw range rings after map is ready
             setTimeout(() => drawRangeRings(), 100);
+
+            // Fix map size on mobile after initialization
+            setTimeout(() => {
+                if (radarMap) radarMap.invalidateSize();
+            }, 200);
         }
 
+        // Handle window resize for map (especially important on mobile)
+        window.addEventListener('resize', function() {
+            if (radarMap) radarMap.invalidateSize();
+        });
+
+        // Handle orientation changes for mobile devices
+        window.addEventListener('orientationchange', function() {
+            setTimeout(() => {
+                if (radarMap) radarMap.invalidateSize();
+            }, 200);
+        });
+
         // ============================================
         // TRACKING CONTROL
         // ============================================