Show inline Agent pending dots

web/tests/chat-stream-presentation.test.mjs

@@ -7,6 +7,7 @@ import {
   createStreamingAssistantMetadata,
   createStreamingAttemptState,
   finalizeStreamingAssistant,
+  isInlineAgentReplyPending,
   markStreamingAssistantAsAgentAside,
   promoteStreamingAssistantTrace,
   setStreamingAssistantSegment,
@@ -126,6 +127,15 @@ test("Agent aside stream keeps identity through loading, markdown deltas, and co
   assert.equal(messages.at(-1).content, "**Inline** reply");
 });
 
+test("inline Agent pending dots stop on first text, completion, failure, and cancellation", () => {
+  let message = markStreamingAssistantAsAgentAside([assistantMessage()], "temp-assistant-").at(-1);
+  assert.equal(isInlineAgentReplyPending(message, true), true);
+  message = setStreamingAssistantSegment([message], "temp-assistant-", "First visible text").at(-1);
+  assert.equal(isInlineAgentReplyPending(message, true), false);
+  assert.equal(isInlineAgentReplyPending(assistantMessage(), false), false, "failed or cancelled pending state is hidden");
+  assert.equal(isInlineAgentReplyPending({ ...message, id: "saved-agent-reply", content: "" }, true), false);
+});
+
 test("message helpers preserve identity when no matching temporary assistant exists", () => {
   const messages = [
     {