**UI AUTHORING SKILL** — Create, review, or debug .orion XML UI definitions (forms, dialogs, windows). Expert in WPF layout system (Grid star sizing, StackPanel), Orion auto-layout (WPF-based grid/stack), Apple HIG (1987/1995), control usage, and layout patterns. USE FOR: designing new dialogs; converting imperative UI code to declarative .orion; fixing layout issues (column widths, flexspace, scrolling); reviewing .orion files for HIG compliance; explaining layout behavior; translating WPF concepts to Orion. DO NOT USE FOR: C code implementation; general framework questions; runtime debugging. INVOKES: Orion UI Designer agent for complex design work; file operations on .orion files; documentation references.
2026-05-08