What problem does it solve? HarmonyOS apps must handle system bars, display cutouts, immersive full-screen layouts, and soft keyboard overlap without hardcoding sizes, and this Skill routes those problems to the correct avoidance strategy with concrete API guidance. ## Core Features & Use Cases - Scene-based routing: Classifies requests into four scenarios (avoid-area detection, safe-area expansion, immersive full-screen, keyboard avoidance) across REQ, DEV, FIX, and VAL phases with a decision tree. - Reference knowledge base: Ships six reference documents covering AvoidAreaType APIs, expandSafeArea usage, immersive layout patterns, keyboard handling, 12 bug-fix cases, and complete development scenario implementations. - HDS component recommendations: Suggests HDS UI Design Kit components (HdsNavigation, HdsTabs, hdsMaterial) as built-in alternatives to manual avoidance code when applicable. - Use Case: When a user reports that a foldable device's title bar overlaps the status bar after unfolding, the Skill routes to the FIX phase, identifies the missing avoidAreaChange listener, and provides the corrected implementation. ## Quick Start Ask the assistant to fix a HarmonyOS page where the bottom content is covered by the navigation indicator in full-screen mode.