Composer 2.5 this wave of hot reload + multi-agent parallelism, frontend development finally no longer needs to switch screens crazily between the browser and the editor.

Cursor upgrades to Design Mode, allowing direct code modification in the runtime interface. You can gather context by clicking, circling, or describing by voice; then extract xpath, React fiber attributes, styles, and viewport screenshots. It also supports multi-select to express alignment or deduplication. Circling freezes the viewport frame to accurately detect the animation state, and voice descriptions can be edited as well. Modification tasks are executed by Composer 2.5, with hot reload reflected instantly. It supports parallel work across multiple agents and significantly improves development efficiency.