fix(tui): refreshed optimistic replay handles

Updated optimistic replay to track the replacement component handles created during transcript rebuilds, so expanded slash prompts still replace the raw replayed message.

Extended the regression test to cover the rebuild window called out in review.

Fixes #3199

packages/coding-agent/src/modes/interactive-mode.ts

@@ -1461,15 +1461,17 @@ export class InteractiveMode implements InteractiveModeContext {
 		if (!this.optimisticUserMessageSignature) return;
 		const submission = this.#pendingSubmittedInput;
 		if (!submission || submission.cancelled || submission.customType) return;
-		this.addMessageToChat(
-			{
-				role: "user",
-				content: [{ type: "text", text: submission.text }, ...(submission.images ?? [])],
-				attribution: "user",
-				timestamp: Date.now(),
-			},
-			{ imageLinks: submission.imageLinks },
-		);
+		this.#optimisticUserMessageComponents = this.#captureAddedChatComponents(() => {
+			this.addMessageToChat(
+				{
+					role: "user",
+					content: [{ type: "text", text: submission.text }, ...(submission.images ?? [])],
+					attribution: "user",
+					timestamp: Date.now(),
+				},
+				{ imageLinks: submission.imageLinks },
+			);
+		});
 	}
 
 	#formatTodoLine(todo: TodoItem, prefix: string, matched: boolean): string {

packages/coding-agent/test/issue-2372-repro.test.ts

@@ -116,6 +116,7 @@ describe("issue #2372 pre-streaming chat rebuild preserves optimistic submission
 		const addMessageSpy = vi.spyOn(mode, "addMessageToChat");
 
 		mode.startPendingSubmission({ text: "/jira-task" });
+		mode.rebuildChatFromMessages();
 		await controller.handleEvent({
 			type: "message_start",
 			message: {
@@ -135,7 +136,7 @@ describe("issue #2372 pre-streaming chat rebuild preserves optimistic submission
 						.map(content => content.text)
 						.join("\n");
 		});
-		expect(renderedTexts).toEqual(["/jira-task", "Expanded Jira task prompt"]);
+		expect(renderedTexts).toEqual(["/jira-task", "/jira-task", "Expanded Jira task prompt"]);
 		expect(mode.chatContainer.children).toHaveLength(1);
 		expect(mode.optimisticUserMessageSignature).toBeUndefined();
 		expect(mode.locallySubmittedUserSignatures.has("/jira-task\u00000")).toBe(false);