feat(#1990): surface pending recv() message count in get_loose_ends

hive-c0re/src/loose_ends.rs

@@ -35,6 +35,17 @@ use crate::coordinator::Coordinator;
 pub fn for_agent(coord: &Coordinator, agent: &str) -> Result<Vec<LooseEnd>> {
     let now = now_unix();
     let mut out = Vec::new();
+    // Undelivered inbox messages this agent still owes itself a `recv`
+    // for. Surfaced first (most actionable) and only when non-zero so a
+    // clean inbox doesn't add noise. The wake-message that drove the
+    // current turn is already delivered, so this counts only what's
+    // genuinely still queued.
+    let pending_messages = coord.broker.count_pending(agent)?;
+    if pending_messages > 0 {
+        out.push(LooseEnd::PendingMessages {
+            count: pending_messages,
+        });
+    }
     // Show each pending approval to the agent that submitted it. The
     // submitter column is NULL for rows predating it; those count as
     // the root agent's.