Fix: allow cron heartbeat payloads through filters (#2219) (thanks @dwfinkelstein)

# Conflicts:
#	CHANGELOG.md

src/auto-reply/reply/session-updates.ts

@@ -21,7 +21,11 @@ export async function prependSystemEvents(params: {
     if (!trimmed) return null;
     const lower = trimmed.toLowerCase();
     if (lower.includes("reason periodic")) return null;
-    if (lower.includes("heartbeat")) return null;
+    // Filter out the actual heartbeat prompt, but not cron jobs that mention "heartbeat"
+    // The heartbeat prompt starts with "Read HEARTBEAT.md" - cron payloads won't match this
+    if (lower.startsWith("read heartbeat.md")) return null;
+    // Also filter heartbeat poll/wake noise
+    if (lower.includes("heartbeat poll") || lower.includes("heartbeat wake")) return null;
     if (trimmed.startsWith("Node:")) {
       return trimmed.replace(/ · last input [^·]+/i, "").trim();
     }