Office Web UI System Overview Use this skill to build or evolve internal web app UI with office-style structure, strong visual hierarchy, and reusable composition while keeping the result portable across frameworks and component libraries. This skill is written as the source of truth in so it can be reused across AI tools that support skills, prompt packs, or custom instructions. Tool-specific metadata should stay in adapter files only and must not change the core workflow. Prioritize two outcomes at the same time: - deliver a clear, high-density, professional interface - make important UI re…