fix(messages-recv): plain ack and error handling on early-ignore path

Addresses Codex P1 + Copilot + CodeRabbit review on PR #383:

1. Use plain sendMessageAck(node) for ignored messages — InfiniteAPI's
   prior in-handler check did NOT use NACK_REASONS.UnhandledError. The
   error code reports a processing failure and can trigger server-side
   retries; ignored stanzas are an intentional drop, not a failure.
   Restoring the original semantics.

2. Wrap the early-ignore block in try/catch routing to onUnexpectedError.
   shouldIgnoreJid is a user-provided callback and sendMessageAck can
   throw (e.g. websocket closed). Without this guard, the error becomes
   an unhandled promise rejection because the early path runs outside
   processNodeWithBuffer's catch wrapper.

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

src/Socket/messages-recv.ts

@@ -3091,7 +3091,12 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 		// Fast path: ack and drop ignored JIDs before entering the buffer/queue.
 		// Skips type='call' so call events are never silently dropped via
 		// shouldIgnoreJid (preserves InfiniteAPI's pre-existing behavior).
+		// Wrapped in try/catch so a throw from shouldIgnoreJid (user callback)
+		// or sendMessageAck (e.g. websocket closed) is routed through
+		// onUnexpectedError instead of becoming an unhandled rejection —
+		// matches the protection processNodeWithBuffer provides.
 		if (type !== 'call') {
+			try {
 				const from = node.attrs.from
 				let ignoreJid = from
 				if (type === 'receipt' && from) {
@@ -3105,7 +3110,14 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 				}
 
 				if (ignoreJid && ignoreJid !== S_WHATSAPP_NET && shouldIgnoreJid(ignoreJid)) {
-				await sendMessageAck(node, type === 'message' ? NACK_REASONS.UnhandledError : undefined)
+					// Plain ack (no NACK error code) preserves InfiniteAPI's prior
+					// behavior — ignored stanzas are an intentional drop, not a
+					// processing failure, so we don't want server-side retries.
+					await sendMessageAck(node)
+					return
+				}
+			} catch (error) {
+				onUnexpectedError(error as Error, identifier)
 				return
 			}
 		}