fix: decode BalancesSnapped event via strategy interface in snapBalances task (#2881)

When snapBalances runs with --consol, the tx is sent to ConsolidationController
but the BalancesSnapped event is emitted by the target strategy. The receipt's
decoded events are bound to the controller's ABI so the event lookup failed
and the task threw even though the tx succeeded.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: sparrowDom

contracts/tasks/validatorCompound.js

@@ -50,17 +50,28 @@ async function snapBalances({ consol = false }) {
   await logTxDetails(tx, "snapBalances");
 
   const receipt = await tx.wait();
-  const event = receipt.events.find(
-    (event) => event.event === "BalancesSnapped"
+
+  // When called via ConsolidationController the BalancesSnapped event is emitted
+  // by the target strategy, so decode logs against the strategy's interface.
+  const strategy = await resolveContract(
+    "CompoundingStakingSSVStrategyProxy",
+    "CompoundingStakingSSVStrategy"
   );
-  if (!event) {
+  const eventTopic = strategy.interface.getEventTopic("BalancesSnapped");
+  const rawLog = receipt.logs.find(
+    (l) =>
+      l.address.toLowerCase() === strategy.address.toLowerCase() &&
+      l.topics[0] === eventTopic
+  );
+  if (!rawLog) {
     throw new Error("BalancesSnapped event not found in transaction receipt");
   }
+  const parsed = strategy.interface.parseLog(rawLog);
   console.log(
     `Balances snapped successfully. Beacon block root ${
-      event.args.blockRoot
+      parsed.args.blockRoot
     }, block ${receipt.blockNumber}, ETH balance ${formatUnits(
-      event.args.ethBalance
+      parsed.args.ethBalance
     )}`
   );
 }