feat: show ecc2 chronic saturation mode

ecc2/src/session/daemon.rs

@@ -157,7 +157,7 @@ where
     RFut: Future<Output = Result<usize>>,
     Rec: FnMut(usize, usize) -> Result<()>,
 {
-    if should_rebalance_first(prior_activity) {
+    if prior_activity.prefers_rebalance_first() {
         let rebalanced = rebalance().await?;
         let first_dispatch = dispatch().await?;
         return Ok((first_dispatch, rebalanced, DispatchPassSummary::default()));
@@ -182,21 +182,6 @@ where
     Ok((first_dispatch, rebalanced, recovery_dispatch))
 }
 
-fn should_rebalance_first(activity: &super::store::DaemonActivity) -> bool {
-    if activity.last_dispatch_deferred == 0 {
-        return false;
-    }
-
-    match (
-        activity.last_dispatch_at.as_ref(),
-        activity.last_recovery_dispatch_at.as_ref(),
-    ) {
-        (Some(dispatch_at), Some(recovery_at)) => recovery_at < dispatch_at,
-        (Some(_), None) => true,
-        _ => false,
-    }
-}
-
 async fn maybe_auto_dispatch_with<F, Fut>(cfg: &Config, dispatch: F) -> Result<usize>
 where
     F: Fn() -> Fut,
@@ -648,34 +633,6 @@ mod tests {
         Ok(())
     }
 
-    #[test]
-    fn should_rebalance_first_only_after_unrecovered_deferred_pressure() {
-        let now = chrono::Utc::now();
-
-        assert!(!should_rebalance_first(&DaemonActivity::default()));
-
-        let unresolved = DaemonActivity {
-            last_dispatch_at: Some(now),
-            last_dispatch_routed: 0,
-            last_dispatch_deferred: 2,
-            last_dispatch_leads: 1,
-            last_recovery_dispatch_at: None,
-            last_recovery_dispatch_routed: 0,
-            last_recovery_dispatch_leads: 0,
-            last_rebalance_at: None,
-            last_rebalance_rerouted: 0,
-            last_rebalance_leads: 0,
-        };
-        assert!(should_rebalance_first(&unresolved));
-
-        let recovered = DaemonActivity {
-            last_recovery_dispatch_at: Some(now + chrono::Duration::seconds(1)),
-            last_recovery_dispatch_routed: 1,
-            ..unresolved.clone()
-        };
-        assert!(!should_rebalance_first(&recovered));
-    }
-
     #[tokio::test]
     async fn coordinate_backlog_cycle_rebalances_first_after_unrecovered_deferred_pressure() -> Result<()> {
         let cfg = Config {

ecc2/src/session/store.rs

@@ -27,6 +27,23 @@ pub struct DaemonActivity {
     pub last_rebalance_leads: usize,
 }
 
+impl DaemonActivity {
+    pub fn prefers_rebalance_first(&self) -> bool {
+        if self.last_dispatch_deferred == 0 {
+            return false;
+        }
+
+        match (
+            self.last_dispatch_at.as_ref(),
+            self.last_recovery_dispatch_at.as_ref(),
+        ) {
+            (Some(dispatch_at), Some(recovery_at)) => recovery_at < dispatch_at,
+            (Some(_), None) => true,
+            _ => false,
+        }
+    }
+}
+
 impl StateStore {
     pub fn open(path: &Path) -> Result<Self> {
         let conn = Connection::open(path)?;
@@ -1039,4 +1056,33 @@ mod tests {
 
         Ok(())
     }
+
+    #[test]
+    fn daemon_activity_detects_rebalance_first_mode() {
+        let now = chrono::Utc::now();
+
+        let clear = DaemonActivity::default();
+        assert!(!clear.prefers_rebalance_first());
+
+        let unresolved = DaemonActivity {
+            last_dispatch_at: Some(now),
+            last_dispatch_routed: 0,
+            last_dispatch_deferred: 2,
+            last_dispatch_leads: 1,
+            last_recovery_dispatch_at: None,
+            last_recovery_dispatch_routed: 0,
+            last_recovery_dispatch_leads: 0,
+            last_rebalance_at: None,
+            last_rebalance_rerouted: 0,
+            last_rebalance_leads: 0,
+        };
+        assert!(unresolved.prefers_rebalance_first());
+
+        let recovered = DaemonActivity {
+            last_recovery_dispatch_at: Some(now + chrono::Duration::seconds(1)),
+            last_recovery_dispatch_routed: 1,
+            ..unresolved
+        };
+        assert!(!recovered.prefers_rebalance_first());
+    }
 }