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

app/syndicate/page.tsx

@@ -0,0 +1,33 @@
+import Link from "next/link";
+import { SYNDICATE_NODES } from "@/lib/syndicateNetwork";
+
+/** Index of themed `/w/[slug]` nodes — same Next app, different chrome. */
+export default function SyndicateIndexPage() {
+  return (
+    <main>
+      <p className="mb-8 text-sm text-zinc-400">
+        Deep links:{" "}
+        <Link href="/syndicate/topology" className="text-fuchsia-400 underline hover:text-fuchsia-300">
+          topology
+        </Link>
+        {" · "}
+        <Link href="/syndicate/routing" className="text-fuchsia-400 underline hover:text-fuchsia-300">
+          routing lore
+        </Link>
+      </p>
+      <ul className="grid gap-3 sm:grid-cols-2">
+        {SYNDICATE_NODES.map((n) => (
+          <li key={n.slug}>
+            <Link
+              href={`/w/${n.slug}`}
+              className="block rounded-lg border border-zinc-800 bg-zinc-900/50 px-4 py-3 transition hover:border-fuchsia-500/40 hover:bg-zinc-900"
+            >
+              <span className="font-mono text-sm text-fuchsia-300">/{n.slug}</span>
+              <p className="mt-1 text-xs text-zinc-500">{n.tagline}</p>
+            </Link>
+          </li>
+        ))}
+      </ul>
+    </main>
+  );
+}