Cover the ambiguous case where the server applies an ACK but the client sees a transient failure, ensuring reconnect follows the server durable cursor instead of local receive state.
Co-authored-by: Cursor <cursoragent@cursor.com>
Provide a standalone agent client for l-ai-chat with service-token auth, safe at-least-once subscriptions, ordered cumulative ACK tracking, and self-contained gRPC fake tests.
Co-authored-by: Cursor <cursoragent@cursor.com>
