feat: initialize project with Next.js, Prisma, and Tailwind CSS

- Add package.json with dependencies and scripts for Next.js and Prisma
- Implement API routes for session management, user authentication, and company configuration
- Create database schema for Company, User, and Session models in Prisma
- Set up authentication with NextAuth and JWT
- Add password reset functionality and user registration endpoint
- Configure Tailwind CSS and PostCSS for styling
- Implement metrics and dashboard settings API endpoints

app/login/page.tsx

@@ -0,0 +1,60 @@
+'use client';
+import { useState } from 'react';
+import { signIn } from 'next-auth/react';
+import { useRouter } from 'next/navigation';
+
+export default function LoginPage() {
+  const [email, setEmail] = useState('');
+  const [password, setPassword] = useState('');
+  const [error, setError] = useState('');
+  const router = useRouter();
+
+  async function handleLogin(e: React.FormEvent) {
+    e.preventDefault();
+    const res = await signIn('credentials', {
+      email,
+      password,
+      redirect: false,
+    });
+    if (res?.ok) router.push('/dashboard');
+    else setError('Invalid credentials.');
+  }
+
+  return (
+    <div className="max-w-md mx-auto mt-24 bg-white rounded-xl p-8 shadow">
+      <h1 className="text-2xl font-bold mb-6">Login</h1>
+      {error && <div className="text-red-600 mb-3">{error}</div>}
+      <form onSubmit={handleLogin} className="flex flex-col gap-4">
+        <input
+          className="border px-3 py-2 rounded"
+          type="email"
+          placeholder="Email"
+          value={email}
+          onChange={(e) => setEmail(e.target.value)}
+          required
+        />
+        <input
+          className="border px-3 py-2 rounded"
+          type="password"
+          placeholder="Password"
+          value={password}
+          onChange={(e) => setPassword(e.target.value)}
+          required
+        />
+        <button className="bg-blue-600 text-white rounded py-2" type="submit">
+          Login
+        </button>
+      </form>
+      <div className="mt-4 text-center">
+        <a href="/register" className="text-blue-600 underline">
+          Register company
+        </a>
+      </div>
+      <div className="mt-2 text-center">
+        <a href="/forgot-password" className="text-blue-600 underline">
+          Forgot password?
+        </a>
+      </div>
+    </div>
+  );
+}