Initial scaffold: React+TS+Vite frontend, FastAPI backend, config system

frontend/src/stores/uiStore.ts

@@ -0,0 +1,17 @@
+import { create } from 'zustand';
+
+type View = 'grid' | 'settings';
+
+interface UIState {
+  view: View;
+  fullscreenCamera: string | null;
+  setView: (view: View) => void;
+  setFullscreenCamera: (name: string | null) => void;
+}
+
+export const useUIStore = create<UIState>((set) => ({
+  view: 'grid',
+  fullscreenCamera: null,
+  setView: (view) => set({ view, fullscreenCamera: null }),
+  setFullscreenCamera: (name) => set({ fullscreenCamera: name }),
+}));