Agent feed: don't show "waiting for report" when all issues closed

The AgentActivityFeed showed a spinner with "הסוכנים התחילו לעבוד,
ממתין לדיווח ראשון..." whenever the case had any issues but no
comments — including cases where all issues had ended in 'done' or
'cancelled' (like 1130-25 after archive). The widget mistook a
finished case for an in-flight workflow.

Now compute hasActiveIssue = some(issues, status !== done && cancelled)
and pick the message accordingly: spinner only while there's still
real work; otherwise a quiet "אין משימות פעילות בתיק. כל המשימות
הסתיימו או בוטלו." with the static MessageSquare icon.

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

web-ui/src/components/cases/agent-activity-feed.tsx

@@ -225,6 +225,12 @@ export function AgentActivityFeed({
 
   const comments = data.comments ?? [];
 
+  // An issue is "active" if it's not done/cancelled. When everything is closed
+  // we should NOT show the "agents are working, waiting for report" spinner.
+  const hasActiveIssue = data.issues.some(
+    (iss) => iss.status !== "done" && iss.status !== "cancelled",
+  );
+
   return (
     <div className="flex flex-col h-full">
       {/* Issue summary bar */}
@@ -243,10 +249,17 @@ export function AgentActivityFeed({
       {/* Comments stream */}
       <div className="flex-1 overflow-y-auto max-h-[500px] space-y-1 px-1">
         {comments.length === 0 ? (
+          hasActiveIssue ? (
             <div className="text-center py-8 text-ink-faint text-sm">
               <Loader2 className="w-5 h-5 animate-spin mx-auto mb-2" />
               הסוכנים התחילו לעבוד, ממתין לדיווח ראשון...
             </div>
+          ) : (
+            <div className="text-center py-8 text-ink-faint text-sm">
+              <MessageSquare className="w-5 h-5 mx-auto mb-2 opacity-50" />
+              אין משימות פעילות בתיק. כל המשימות הסתיימו או בוטלו.
+            </div>
+          )
         ) : (
           comments.map((c) => (
             <CommentCard key={c.id} comment={c} issueMap={issueMap} />