feat: added live tracking and stale status warnings for agent activity snapshots

- Added live tracking and stale status warnings for agent activity snapshots.
- Fixed text wrapping with ANSI escape sequences to defer style open sequences after whitespace.
- Added VirtualRenderScheduler for deterministic virtual-clock rendering tests.

packages/coding-agent/test/task/executor-async-quiescence.test.ts

@@ -161,6 +161,7 @@ function createAsyncSession(
 		},
 		dispose: options.dispose ?? (async () => {}),
 		setIrcWakeTurnObserver: () => {},
+		subscribeRunState: () => () => {},
 	};
 	harness.session = session as unknown as AgentSession;
 	return harness;