Fix avg buy price calculation by iterating snapshots oldest-first

index.html

@@ -1331,7 +1331,7 @@ function calculateCurrentHoldings() {
         const snaps = addressSnapshots[addr] || [];
         if (snaps.length < 2) return;
         let prevBtc = 0;
-        snaps.forEach(snap => {
+        snaps.slice().reverse().forEach(snap => {
             const currentDate = snap.block_timestamp.slice(0, 10);
             const currentBtc = getTokenAmount(snap?.wallet?.cbBTC, 'cbBTC') + getTokenAmount(snap?.collateral?.cbBTC, 'cbBTC');
             const delta = currentBtc - prevBtc;