feat: add rivers overview component and sync lake volume data across the dataset

scripts/buildIndex.ts

@@ -56,10 +56,21 @@ const lakes = lakesConfig.map(lake => {
   
   const metrics = calculateLakeMetrics(currentLevel, volume, lake);
 
+  const cleanText = lake.text.replace(/^VD\s+/, '').replace(/^LG\s+/, '');
+  const parts = cleanText.split('-').map(p => p.trim());
+  let name = '';
+  let river = '';
+  if (parts.length > 1) {
+    river = parts[parts.length - 1];
+    name = parts.slice(0, -1).join(' - ');
+  } else {
+    name = parts[0];
+  }
+
   return {
     id: lake.id,
-    name: lake.text.replace('VD ', '').split('-')[0].trim(),
-    river: lake.text.includes('-') ? lake.text.split('-')[1].trim() : '',
+    name,
+    river,
     priority: lake.priority || false,
     level: currentLevel.toFixed(2),
     capacity: metrics.capacity,
@@ -71,7 +82,8 @@ const lakes = lakesConfig.map(lake => {
     navigationForbidden: lake.navigationForbidden || false,
     lat: lake.coords[0],
     lng: lake.coords[1],
-    sparkline
+    sparkline,
+    type: lake.type || 'lake'
   };
 });