Import project configuration: vault/next.config.ts

Import the existing local project snapshot. This commit organizes existing files; it does not represent newly developed functionality.

vault/next.config.ts

@@ -0,0 +1,41 @@
+import type { NextConfig } from "next";
+
+const nextConfig: NextConfig = {
+  async headers() {
+    const contentSecurityPolicy = [
+      "default-src 'self'",
+      "script-src 'self' 'unsafe-eval' 'unsafe-inline'",
+      "style-src 'self' 'unsafe-inline'",
+      "img-src 'self' data: blob:",
+      "font-src 'self'",
+      "connect-src 'self'",
+      "media-src 'self'",
+      "object-src 'none'",
+      "base-uri 'self'",
+      "form-action 'self'",
+      "frame-ancestors 'none'",
+    ].join("; ");
+
+    return [
+      {
+        source: "/:path*",
+        headers: [
+          {
+            key: "Content-Security-Policy",
+            value: contentSecurityPolicy,
+          },
+          {
+            key: "Referrer-Policy",
+            value: "strict-origin-when-cross-origin",
+          },
+          {
+            key: "X-Content-Type-Options",
+            value: "nosniff",
+          },
+        ],
+      },
+    ];
+  },
+};
+
+export default nextConfig;