Add admin dashboard and middleware protection

Introduces an admin dashboard page with cards for inviting vendors, banning users, and viewing recent orders. Adds middleware logic to restrict /admin routes to the 'admin1' user and updates route matching. Also updates git-info.json with latest commit metadata.

components/admin/InviteVendorCard.tsx

@@ -0,0 +1,62 @@
+"use client";
+import { useState } from "react";
+import { fetchClient } from "@/lib/api-client";
+
+export default function InviteVendorCard() {
+  const [username, setUsername] = useState("");
+  const [email, setEmail] = useState("");
+  const [loading, setLoading] = useState(false);
+  const [message, setMessage] = useState<string | null>(null);
+
+  async function handleInvite(e: React.FormEvent) {
+    e.preventDefault();
+    setLoading(true);
+    setMessage(null);
+    try {
+      await fetchClient("/admin/invitations", {
+        method: "POST",
+        body: { username, email }
+      });
+      setMessage("Invitation sent");
+      setUsername("");
+      setEmail("");
+    } catch (e: any) {
+      setMessage(e?.message || "Failed to send invitation");
+    } finally {
+      setLoading(false);
+    }
+  }
+
+  return (
+    <div className="rounded-lg border border-border/60 bg-background p-4">
+      <h2 className="font-medium">Invite Vendor</h2>
+      <p className="text-sm text-muted-foreground mt-1">Generate and send an invite</p>
+      <form onSubmit={handleInvite} className="mt-4 space-y-3">
+        <input
+          className="w-full rounded-md border border-border bg-background px-3 py-2 text-sm"
+          placeholder="Vendor username"
+          value={username}
+          onChange={(e) => setUsername(e.target.value)}
+          required
+        />
+        <input
+          className="w-full rounded-md border border-border bg-background px-3 py-2 text-sm"
+          placeholder="Email (optional)"
+          value={email}
+          onChange={(e) => setEmail(e.target.value)}
+          type="email"
+        />
+        <button
+          type="submit"
+          className="inline-flex items-center rounded-md bg-primary px-3 py-2 text-sm text-primary-foreground disabled:opacity-60"
+          disabled={loading}
+        >
+          {loading ? "Sending..." : "Send Invite"}
+        </button>
+        {message && <p className="text-xs text-muted-foreground">{message}</p>}
+      </form>
+    </div>
+  );
+}
+
+