feat: Add temporary admin upgrade endpoint

Author: reavanthchowdary62-pixel

src/app/api/admin/upgrade/route.ts

@@ -0,0 +1,38 @@
+import { NextResponse } from "next/server";
+import { connectDB } from "@/lib/mongodb";
+import { User } from "@/lib/models";
+import { cookies } from "next/headers";
+import { verifySessionToken } from "@/lib/auth";
+
+export const dynamic = "force-dynamic";
+
+export async function GET() {
+  try {
+    const token = cookies().get("rk-auth-session")?.value;
+    const session = await verifySessionToken(token);
+    
+    if (!session) {
+      return NextResponse.json({ error: "You must be logged in first. Go to /login." });
+    }
+
+    if (session.email !== "reavanthchowdary4@gmail.com") {
+      return NextResponse.json({ error: "Only the founder can run this upgrade." }, { status: 403 });
+    }
+
+    const db = await connectDB();
+    if (!db) return NextResponse.json({ error: "Database error" }, { status: 500 });
+
+    const user = await User.findByIdAndUpdate(session.id, { role: "ADMIN" }, { new: true });
+
+    return NextResponse.json({ 
+      success: true, 
+      message: "🎉 SUCCESS! Your account has been upgraded to ADMIN.",
+      nextSteps: "IMPORTANT: You must log out and log back in right now for the Admin features to unlock.",
+      email: user.email,
+      role: user.role
+    });
+
+  } catch (error: unknown) {
+    return NextResponse.json({ error: "Server Error", details: String(error) }, { status: 500 });
+  }
+}