add login/sign-up page with dark/light mode

node_modules/next/dist/esm/lib/require-instrumentation-client.js

@@ -0,0 +1,25 @@
+/**
+ * This module imports the client instrumentation hook from the project root.
+ *
+ * The `private-next-instrumentation-client` module is automatically aliased to
+ * the `instrumentation-client.ts` file in the project root by webpack or turbopack.
+ */ if (process.env.NODE_ENV === 'development') {
+    const measureName = 'Client Instrumentation Hook';
+    const startTime = performance.now();
+    // eslint-disable-next-line @next/internal/typechecked-require -- Not a module.
+    module.exports = require('private-next-instrumentation-client');
+    const endTime = performance.now();
+    const duration = endTime - startTime;
+    // Using 16ms threshold as it represents one frame (1000ms/60fps)
+    // This helps identify if the instrumentation hook initialization
+    // could potentially cause frame drops during development.
+    const THRESHOLD = 16;
+    if (duration > THRESHOLD) {
+        console.log(`[${measureName}] Slow execution detected: ${duration.toFixed(0)}ms (Note: Code download overhead is not included in this measurement)`);
+    }
+} else {
+    // eslint-disable-next-line @next/internal/typechecked-require -- Not a module.
+    module.exports = require('private-next-instrumentation-client');
+}
+
+//# sourceMappingURL=require-instrumentation-client.js.map