fix: WSPR infinite cleanup loop + earthquake marker debug logging

WSPR:
- Added guard to prevent cleanup when no controls exist
- Stops infinite '[WSPR] Plugin disabled' console spam
- Only cleans up if controls are actually present

Earthquakes:
- Added detailed logging for each marker creation
- Logs: quakeId, lat, lon, size, color
- Will help identify if markers are being positioned correctly

src/plugins/layers/useEarthquakes.js

@@ -112,6 +112,7 @@ export function useLayer({ enabled = false, opacity = 0.9, map = null }) {
         iconAnchor: [size/2, size/2]
       });
       
+      console.log('Creating earthquake marker:', quakeId, 'at', lat, lon, 'size:', size, 'color:', color);
       const circle = L.marker([lat, lon], { icon, opacity });
 
       // Add to map first

src/plugins/layers/useWSPR.js

@@ -973,6 +973,14 @@ export function useLayer({ enabled = false, opacity = 0.7, map = null }) {
   // Cleanup controls on disable - FIX: properly remove all controls and layers
   useEffect(() => {
     if (!enabled && map) {
+      // Only log once and check if controls actually exist before attempting removal
+      const hasControls = filterControlRef.current || legendControlRef.current || 
+                          statsControlRef.current || chartControlRef.current;
+      
+      if (!hasControls) {
+        return; // Nothing to clean up
+      }
+      
       console.log('[WSPR] Plugin disabled - cleaning up all controls and layers');
       
       // Remove filter control