desktop-pet

Convert a GIF animation into a horizontal sprite sheet PNG for the desktop pet. Use this skill whenever the user mentions adding a new animation, converting a GIF, creating a sprite sheet, or wants to add new pet behaviors/animations. Also trigger when the user provides a new GIF file for the pet, or asks about animation states, frame counts, or sprite parameters.

Spec-Driven Development workflow for this project. Use this skill whenever the user wants to implement, add, build, design, or change a feature in the desktop pet app — even if they just say "加个 X", "实现 Y", "搞个 Z", "写个 XX 功能", or "我想让宠物能...". Triggers on new functionality, new behaviors, or any code change that introduces a new capability. Does NOT trigger for pure bug fixes, refactors, doc updates, or sprite asset generation (use gif-to-sheet for that). When triggered, the skill enforces a spec-first workflow: a Spec must reach `status: FROZEN` before any code for that feature is written, and all code/tests must trace back to the frozen Spec.