fix(cli): les annonces MCP/inter-agent restent affichées pendant qu'un agent est busy — #232

frontend/src/features/layout/LayoutGrid.tsx

@@ -625,7 +625,7 @@ function LeafView({
   // F3 lifecycle state (busy) for this cell's agent — shared here so the
   // write-portal veil can be mutually excluded with the F3 overlay (exactly one
   // full-cell veil at a time, F3 first). Same source the overlay itself reads.
-  const { active: busyActive } = useTargetAnnouncements(agentId ?? "");
+  const { active: announcementBusyActive } = useTargetAnnouncements(agentId ?? "");
   // Ticket #54 — local model-server launch state for this cell's pinned agent.
   // Correlated `agentId → profileId → opencode.localModelServerId → status` via
   // the shared hook (same reduction as `useAgents`). While the bound server is
@@ -768,6 +768,10 @@ function LeafView({
     ) ?? [];
   const busyByWorkState = agentWork?.busy.state === "busy" || Boolean(activeTicket);
   const delegatedTicket = activeTicket?.source.kind === "agent" ? activeTicket : undefined;
+  const busyActive = announcementBusyActive || busyByWorkState;
+  const targetAnnouncementsFallback = delegatedTicket?.requesterLabel
+    ? `Travaille sur une demande de ${delegatedTicket.requesterLabel}.`
+    : "Travaille sur une demande en cours.";
   const [restartPending, setRestartPending] = useState(false);
   const [restartError, setRestartError] = useState(false);
   const [freshRestartedSession, setFreshRestartedSession] =
@@ -1561,8 +1565,13 @@ function LeafView({
             busy state (agentBusyChanged + read-model hydration), never by the raw
             PTY — it retracts at idle even when a turn ends without a completion
             event. Self-guards on `active` (busy) and renders null otherwise. */}
-        {!modelServerOverlay && cellMode !== "custom" && agentId != null && (
-          <TargetAnnouncementsOverlay projectId={projectId} agentId={agentId} />
+        {!modelServerOverlay && agentId != null && (
+          <TargetAnnouncementsOverlay
+            projectId={projectId}
+            agentId={agentId}
+            busyFallbackActive={busyByWorkState}
+            fallbackText={targetAnnouncementsFallback}
+          />
         )}
         {/* Ticket #54 — model-server launch veil. Top-priority full-cell overlay
             (suppresses the write-portal + F3 veils above): while the pinned