feat: implement automated data scraping and history generation pipeline for PVL reservoir levels

scripts/buildIndex.ts

@@ -63,6 +63,11 @@ const lakes = lakesConfig.map(lake => {
     if (volume === 0) volume = lake.maxVolume || 0;
   }
 
+  let storageDiff = 0;
+  if (lake.storageLevel && currentLevel > 0) {
+    storageDiff = Number((currentLevel - lake.storageLevel).toFixed(2));
+  }
+
   return {
     id: lake.id,
     name: lake.text.replace('VD ', '').split('-')[0].trim(),
@@ -70,6 +75,7 @@ const lakes = lakesConfig.map(lake => {
     priority: lake.priority || false,
     level: currentLevel.toFixed(2),
     capacity: capacity,
+    storageDiff: storageDiff,
     inflow: inflow.toFixed(1),
     outflow: currentFlow.toFixed(1),
     volume: volume,