feat(platform): add Discord onboarding and Velocity gate

apps/web/next.config.ts

@@ -1,7 +1,35 @@
 import type { NextConfig } from "next";
 
+const contentSecurityPolicy = [
+  "default-src 'self'",
+  `script-src 'self' 'unsafe-inline'${process.env.NODE_ENV === "development" ? " 'unsafe-eval'" : ""}`,
+  "style-src 'self' 'unsafe-inline'",
+  "img-src 'self' data:",
+  "font-src 'self'",
+  "connect-src 'self'",
+  "object-src 'none'",
+  "base-uri 'self'",
+  "form-action 'self'",
+  "frame-ancestors 'none'",
+].join("; ");
+
 const nextConfig: NextConfig = {
   output: "standalone",
+  poweredByHeader: false,
+  async headers() {
+    return [
+      {
+        source: "/(.*)",
+        headers: [
+          { key: "Content-Security-Policy", value: contentSecurityPolicy },
+          { key: "Referrer-Policy", value: "no-referrer" },
+          { key: "X-Content-Type-Options", value: "nosniff" },
+          { key: "X-Frame-Options", value: "DENY" },
+          { key: "Permissions-Policy", value: "camera=(), microphone=(), geolocation=()" },
+        ],
+      },
+    ];
+  },
   serverExternalPackages: ["postgres"],
   transpilePackages: [
     "@minecraft-account-manager/contracts",