Harden onion boot flow and deepen site surfaces

Add persistent onion key backup and restore, improve startup resilience, and flesh out the major site verticals with richer navigation, search coverage, and operator documentation.

Made-with: Cursor

components/AppProviders.tsx

@@ -0,0 +1,17 @@
+"use client";
+
+import type { ReactNode } from "react";
+import { AccountProvider } from "@/contexts/AccountContext";
+import { CartProvider } from "@/contexts/CartContext";
+import { WalletProvider } from "@/contexts/WalletContext";
+
+/** Client-only wrappers so wallet + persistent account work on every route. */
+export default function AppProviders({ children }: { children: ReactNode }) {
+  return (
+    <WalletProvider>
+      <AccountProvider>
+        <CartProvider>{children}</CartProvider>
+      </AccountProvider>
+    </WalletProvider>
+  );
+}