feat(20-01): extend UIStore with FAB/catalog state, add useTags hook, update useGlobalItems

- Add fabMenuOpen, openFabMenu, closeFabMenu to UIStore
- Add catalogSearchOpen, catalogSearchMode, openCatalogSearch, closeCatalogSearch
- openCatalogSearch also closes FAB menu (natural flow)
- Create useTags hook with 5-min staleTime cache
- Add optional tags parameter to useGlobalItems for tag filtering

src/client/stores/uiStore.ts

@@ -56,6 +56,17 @@ interface UIState {
 	// Setup impact preview
 	selectedSetupId: number | null;
 	setSelectedSetupId: (id: number | null) => void;
+
+	// FAB menu
+	fabMenuOpen: boolean;
+	openFabMenu: () => void;
+	closeFabMenu: () => void;
+
+	// Catalog search overlay
+	catalogSearchOpen: boolean;
+	catalogSearchMode: "collection" | "thread" | null;
+	openCatalogSearch: (mode: "collection" | "thread") => void;
+	closeCatalogSearch: () => void;
 }
 
 export const useUIStore = create<UIState>((set) => ({
@@ -119,4 +130,21 @@ export const useUIStore = create<UIState>((set) => ({
 	// Setup impact preview
 	selectedSetupId: null,
 	setSelectedSetupId: (id) => set({ selectedSetupId: id }),
+
+	// FAB menu
+	fabMenuOpen: false,
+	openFabMenu: () => set({ fabMenuOpen: true }),
+	closeFabMenu: () => set({ fabMenuOpen: false }),
+
+	// Catalog search overlay
+	catalogSearchOpen: false,
+	catalogSearchMode: null,
+	openCatalogSearch: (mode) =>
+		set({
+			catalogSearchOpen: true,
+			catalogSearchMode: mode,
+			fabMenuOpen: false,
+		}),
+	closeCatalogSearch: () =>
+		set({ catalogSearchOpen: false, catalogSearchMode: null }),
 }));