fix(site/src/pages/AgentsPage): simplify goal banner and pause copy

site/src/pages/AgentsPage/AgentChatPage.tsx

@@ -1270,9 +1270,7 @@ const AgentChatPage: FC = () => {
 				toast.info("No current goal.");
 			},
 			onPausedRunningGoal: () => {
-				toast.info(
-					"Goal paused. The current turn may continue. Use Stop for immediate interruption.",
-				);
+				toast.info("Goal paused. Use Stop to halt the current turn.");
 			},
 		});
 	};

site/src/pages/AgentsPage/components/ChatGoalBanner.stories.tsx

@@ -34,6 +34,9 @@ export const Active: Story = {
 		const canvas = within(canvasElement);
 		expect(canvas.getByLabelText("Current goal")).toBeVisible();
 		expect(canvas.getByText("Active")).toBeVisible();
+		expect(
+			canvas.getByText("Ship the frontend goal command UX with tests."),
+		).toBeVisible();
 
 		await userEvent.click(canvas.getByRole("button", { name: /Pause/i }));
 		await userEvent.click(canvas.getByRole("button", { name: /Complete/i }));

site/src/pages/AgentsPage/components/ChatGoalBanner.tsx

@@ -78,7 +78,7 @@ export const ChatGoalBanner: FC<ChatGoalBannerProps> = ({
 						</Badge>
 					</div>
 					<p className="whitespace-pre-wrap break-words text-content-secondary">
-						{goal.objective.trim() || "No objective provided."}
+						{goal.objective}
 					</p>
 					{goal.completion_summary ? (
 						<p className="whitespace-pre-wrap break-words text-xs text-content-secondary">