Working feed: NDK + relay connection + live notes from Nostr

- Tailwind CSS + Zustand + NDK installed and configured
- Sidebar with feed/relays/settings navigation
- Global feed view with live notes from relays
- Profile fetching with caching and deduplication
- Relay connection with timeout handling
- Note cards with avatar, name, timestamp, content
- Dark theme, monospace, no-slop UI
- Devtools enabled for debugging

src/stores/ui.ts

@@ -0,0 +1,17 @@
+import { create } from "zustand";
+
+type View = "feed" | "relays" | "settings";
+
+interface UIState {
+  currentView: View;
+  sidebarCollapsed: boolean;
+  setView: (view: View) => void;
+  toggleSidebar: () => void;
+}
+
+export const useUIStore = create<UIState>((set) => ({
+  currentView: "feed",
+  sidebarCollapsed: false,
+  setView: (currentView) => set({ currentView }),
+  toggleSidebar: () => set((s) => ({ sidebarCollapsed: !s.sidebarCollapsed })),
+}));