feat: Add Single User authentication to Selfhosted (#870)

* Single user/password for selfhosted

* fix revision id latest migration

www/app/login/page.tsx

@@ -0,0 +1,76 @@
+"use client";
+
+import { useState } from "react";
+import { signIn } from "next-auth/react";
+import { useRouter } from "next/navigation";
+import {
+  Box,
+  Button,
+  Field,
+  Input,
+  VStack,
+  Text,
+  Heading,
+} from "@chakra-ui/react";
+
+export default function LoginPage() {
+  const router = useRouter();
+  const [email, setEmail] = useState("");
+  const [password, setPassword] = useState("");
+  const [error, setError] = useState<string | null>(null);
+  const [loading, setLoading] = useState(false);
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    setError(null);
+    setLoading(true);
+
+    const result = await signIn("credentials", {
+      email,
+      password,
+      redirect: false,
+    });
+
+    setLoading(false);
+
+    if (result?.error) {
+      console.log(result?.error);
+      setError("Invalid email or password");
+    } else {
+      router.push("/");
+    }
+  };
+
+  return (
+    <Box maxW="400px" mx="auto" mt="100px" p={6}>
+      <VStack gap={6} as="form" onSubmit={handleSubmit}>
+        <Heading size="lg">Log in</Heading>
+        {error && <Text color="red.500">{error}</Text>}
+        <Field.Root required>
+          <Field.Label>Email</Field.Label>
+          <Input
+            type="email"
+            value={email}
+            onChange={(e) => setEmail(e.target.value)}
+          />
+        </Field.Root>
+        <Field.Root required>
+          <Field.Label>Password</Field.Label>
+          <Input
+            type="password"
+            value={password}
+            onChange={(e) => setPassword(e.target.value)}
+          />
+        </Field.Root>
+        <Button
+          type="submit"
+          colorPalette="blue"
+          width="full"
+          loading={loading}
+        >
+          Log in
+        </Button>
+      </VStack>
+    </Box>
+  );
+}