Mezzanine-UI

Angular 元件必須 prop-for-prop 鏡像 React 對應元件的 props 的強制規範。Use when creating or refactoring Angular components in mezzanine packages/ng/, adding input() to picker/text-field/dropdown/calendar family, deciding which React props to expose, porting React xxxProps to Angular signal inputs, designing component inputs, adding sub-component configuration, encountering questions about flat vs bundle props. Covers the "mirror React prop shape" rule, flat + bundle coexistence pattern with flat-overrides-bundle merging, ReactNode content projection exception, xxxRef via ViewChild pattern, OnPush CD hazards with inline object literals, output naming alignment with React, and new-component checklist.