diff --git a/frontend/app/_auth/client.js b/frontend/app/_auth/client.js
new file mode 100755
index 00000000..412bcf34
--- /dev/null
+++ b/frontend/app/_auth/client.js
@@ -0,0 +1,150 @@
+// frontend/app/page.jsx
+'use client';
+
+import { useEffect, useState } from 'react';
+import Link from 'next/link';
+import { useRouter } from 'next/navigation';
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
+import { Button } from '@/components/ui/button';
+import { Tabs, TabsList, TabsTrigger, TabsContent } from '@/components/ui/tabs';
+import {
+  Dialog, DialogTrigger, DialogContent, DialogHeader, DialogTitle, DialogDescription,
+} from '@/components/ui/dialog';
+import { Label } from '@/components/ui/label';
+import { Input } from '@/components/ui/input';
+import { login as authLogin, logout as authLogout, me as fetchMe, credentials, authHeaders } from '@/app/_auth/client';
+
+export default function HomePage() {
+  const router = useRouter();
+  const [me, setMe] = useState(null);
+  const [loading, setLoading] = useState(true);
+
+  // login dialog states
+  const [open, setOpen] = useState(false);
+  const [username, setUsername] = useState('');
+  const [password, setPassword] = useState('');
+  const [submitting, setSubmitting] = useState(false);
+  const [err, setErr] = useState('');
+
+  // โหลดสถานะผู้ใช้แบบไม่ redirect
+  useEffect(() => {
+    let cancelled = false;
+    (async () => {
+      try {
+        const user = await fetchMe();
+        if (!cancelled) setMe(user);
+      } finally {
+        if (!cancelled) setLoading(false);
+      }
+    })();
+    return () => { cancelled = true; };
+  }, []);
+
+  async function handleLogin(e) {
+    e?.preventDefault();
+    setSubmitting(true);
+    setErr('');
+    try {
+      const user = await authLogin({ username, password });
+      if (!user) {
+        setErr('ชื่อผู้ใช้หรือรหัสผ่านไม่ถูกต้อง');
+        return;
+      }
+      setMe(user);
+      setOpen(false);
+      router.push('/dashboard');
+    } catch {
+      setErr('เกิดข้อผิดพลาดในการเชื่อมต่อเซิร์ฟเวอร์');
+    } finally {
+      setSubmitting(false);
+    }
+  }
+
+  async function handleLogout() {
+    await authLogout().catch(() => {});
+    setMe(null);
+  }
+
+  if (loading) {
+    return (
+      <div className="space-y-6">
+        <div className="w-56 rounded h-7 bg-muted animate-pulse" />
+        <div className="grid gap-4 md:grid-cols-3">
+          {[...Array(3)].map((_, i) => <div key={i} className="rounded h-28 bg-muted animate-pulse" />)}
+        </div>
+      </div>
+    );
+  }
+
+  return (
+    <div className="space-y-6">
+      <div className="flex items-center justify-between">
+        <h2 className="text-2xl font-bold">Welcome to DMS</h2>
+
+        {/* แถบสถานะล็อกอิน + ปุ่ม */}
+        <div className="flex items-center gap-2">
+          {me ? (
+            <>
+              <span className="text-sm text-muted-foreground">สวัสดี, <b>{me.first_name || me.username}</b></span>
+              <Button variant="secondary" onClick={() => router.push('/dashboard')}>Go to Dashboard</Button>
+              <Button variant="outline" onClick={handleLogout}>Logout</Button>
+            </>
+          ) : (
+            <Dialog open={open} onOpenChange={setOpen}>
+              <DialogTrigger asChild>
+                <Button>Login</Button>
+              </DialogTrigger>
+              <DialogContent className="sm:max-w-[420px]">
+                <DialogHeader>
+                  <DialogTitle>เข้าสู่ระบบ</DialogTitle>
+                  <DialogDescription>กรอกชื่อผู้ใช้และรหัสผ่านของคุณ</DialogDescription>
+                </DialogHeader>
+                <form onSubmit={handleLogin} className="grid gap-3">
+                  <div className="grid gap-1.5">
+                    <Label htmlFor="username">Username</Label>
+                    <Input id="username" value={username} onChange={e => setUsername(e.target.value)} required />
+                  </div>
+                  <div className="grid gap-1.5">
+                    <Label htmlFor="password">Password</Label>
+                    <Input id="password" type="password" value={password} onChange={e => setPassword(e.target.value)} required />
+                  </div>
+                  {err && <p className="text-sm text-red-600">{err}</p>}
+                  <Button type="submit" disabled={submitting}>{submitting ? 'กำลังเข้าสู่ระบบ...' : 'Login'}</Button>
+                </form>
+              </DialogContent>
+            </Dialog>
+          )}
+        </div>
+      </div>
+
+      {/* เนื้อหาอื่น ๆ (เหมือนเดิม) */}
+      <Tabs defaultValue="overview" className="w-full">
+        <TabsList>
+          <TabsTrigger value="overview">Overview</TabsTrigger>
+          <TabsTrigger value="activity">Activity</TabsTrigger>
+        </TabsList>
+
+        <TabsContent value="overview">
+          <div className="grid gap-4 mt-4 md:grid-cols-3">
+            <Card><CardHeader><CardTitle>📑 RFAs</CardTitle></CardHeader><CardContent><p className="text-3xl font-bold">24</p></CardContent></Card>
+            <Card><CardHeader><CardTitle>📐 Drawings</CardTitle></CardHeader><CardContent><p className="text-3xl font-bold">112</p></CardContent></Card>
+            <Card><CardHeader><CardTitle>📤 Transmittals</CardTitle></CardHeader><CardContent><p className="text-3xl font-bold">8</p></CardContent></Card>
+          </div>
+        </TabsContent>
+
+        <TabsContent value="activity">
+          <div className="mt-4 space-y-3">
+            <p>✔️ User <b>editor01</b> uploaded Drawing D-2025-07</p>
+            <p>✔️ Transmittal T-2025-02 issued to Contractor</p>
+            <p>✔️ RFA R-2025-03 marked as Resolved</p>
+          </div>
+        </TabsContent>
+      </Tabs>
+
+      <div className="pt-2">
+        <Button asChild disabled={!me}><Link href="/dashboard">Go to Dashboard</Link></Button>
+        {!me && <span className="ml-2 text-sm text-muted-foreground">กรุณา Login ก่อน</span>}
+      </div>
+    </div>
+  );
+}
diff --git a/frontend/app/page.jsx b/frontend/app/page.jsx
index b2c72ffe..93e1dedc 100755
--- a/frontend/app/page.jsx
+++ b/frontend/app/page.jsx
@@ -1,64 +1,142 @@
-// app/page.jsx
-"use client";
+// frontend/app/page.jsx
+'use client';
 
-import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
-import { Button } from "@/components/ui/button";
-import { Tabs, TabsList, TabsTrigger, TabsContent } from "@/components/ui/tabs";
+import { useEffect, useState } from 'react';
+import Link from 'next/link';
+import { useRouter } from 'next/navigation';
+import { Button } from '@/components/ui/button';
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
+import {
+  Dialog, DialogTrigger, DialogContent, DialogHeader, DialogTitle, DialogDescription,
+} from '@/components/ui/dialog';
+import { Label } from '@/components/ui/label';
+import { Input } from '@/components/ui/input';
+
+// 👉 ใช้ driver เดิมของโปรเจ็กต์ (relative path + credentials: 'include')
+import cookieDriver from '@/app/_auth/drivers/cookieDriver';
 
 export default function HomePage() {
+  const router = useRouter();
+
+  const [me, setMe] = useState(null);
+  const [loading, setLoading] = useState(true);
+
+  // dialog/login state
+  const [open, setOpen] = useState(false);
+  const [username, setUsername] = useState('');
+  const [password, setPassword] = useState('');
+  const [submitting, setSubmitting] = useState(false);
+  const [err, setErr] = useState('');
+
+  // โหลดสถานะผู้ใช้แบบไม่ redirect
+  useEffect(() => {
+    let cancelled = false;
+    (async () => {
+      try {
+        const res = await cookieDriver.me(); // ภายในยิง /api/auth/me ด้วย credentials: 'include'
+        if (!cancelled && res && (res.user || res.username)) {
+          const u = res.user ?? res;
+          setMe(u);
+        }
+      } finally {
+        if (!cancelled) setLoading(false);
+      }
+    })();
+    return () => { cancelled = true; };
+  }, []);
+
+  async function onSubmit(e) {
+    e?.preventDefault();
+    setErr('');
+    if (!username.trim() || !password) {
+      setErr('กรอกชื่อผู้ใช้และรหัสผ่านให้ครบ');
+      return;
+    }
+    try {
+      setSubmitting(true);
+      const ok = await cookieDriver.login({ username, password }); // ยิง /api/auth/login แบบ relative
+      if (!ok) {
+        setErr('ชื่อผู้ใช้หรือรหัสผ่านไม่ถูกต้อง');
+        return;
+      }
+      // ตรวจ me อีกรอบให้ชัวร์ว่ามีคุกกี้แล้ว
+      const res = await cookieDriver.me();
+      const u = res?.user ?? res ?? { username };
+      setMe(u);
+      setOpen(false);
+      router.push('/dashboard');
+    } catch {
+      setErr('เชื่อมต่อเซิร์ฟเวอร์ไม่ได้');
+    } finally {
+      setSubmitting(false);
+    }
+  }
+
+  async function onLogout() {
+    try { await cookieDriver.logout?.(); } catch {}
+    setMe(null);
+  }
+
+  if (loading) {
+    return (
+      <div className="space-y-6">
+        <div className="w-56 rounded h-7 bg-muted animate-pulse" />
+        <div className="grid gap-4 md:grid-cols-3">
+          {[...Array(3)].map((_, i) => <div key={i} className="h-24 rounded bg-muted animate-pulse" />)}
+        </div>
+      </div>
+    );
+  }
+
   return (
     <div className="space-y-6">
-      <h2 className="text-2xl font-bold">Welcome to DMS</h2>
+      {/* header */}
+      <div className="flex items-center justify-between">
+        <h2 className="text-2xl font-bold">Welcome to DMS</h2>
+        <div className="flex items-center gap-2">
+          {me ? (
+            <>
+              <span className="text-sm text-muted-foreground">สวัสดี, <b>{me.first_name || me.username}</b></span>
+              <Button variant="secondary" onClick={() => router.push('/dashboard')}>Go to Dashboard</Button>
+              <Button variant="outline" onClick={onLogout}>Logout</Button>
+            </>
+          ) : (
+            <Dialog open={open} onOpenChange={setOpen}>
+              <DialogTrigger asChild><Button>Login</Button></DialogTrigger>
+              <DialogContent className="sm:max-w-[420px]">
+                <DialogHeader>
+                  <DialogTitle>เข้าสู่ระบบ</DialogTitle>
+                  <DialogDescription>กรอกชื่อผู้ใช้และรหัสผ่านของคุณ</DialogDescription>
+                </DialogHeader>
+                <form onSubmit={onSubmit} className="grid gap-3">
+                  <div className="grid gap-1.5">
+                    <Label htmlFor="username">Username</Label>
+                    <Input id="username" value={username} onChange={(e) => setUsername(e.target.value)} required />
+                  </div>
+                  <div className="grid gap-1.5">
+                    <Label htmlFor="password">Password</Label>
+                    <Input id="password" type="password" value={password} onChange={(e) => setPassword(e.target.value)} required />
+                  </div>
+                  {err && <p className="text-sm text-red-600">{err}</p>}
+                  <Button type="submit" disabled={submitting}>{submitting ? 'กำลังเข้าสู่ระบบ…' : 'Login'}</Button>
+                </form>
+              </DialogContent>
+            </Dialog>
+          )}
+        </div>
+      </div>
 
-      <Tabs defaultValue="overview" className="w-full">
-        <TabsList>
-          <TabsTrigger value="overview">Overview</TabsTrigger>
-          <TabsTrigger value="activity">Activity</TabsTrigger>
-        </TabsList>
+      {/* เนื้อหาย่อก่อนเข้าดาชบอร์ด */}
+      <div className="grid gap-4 mt-2 md:grid-cols-3">
+        <Card><CardHeader><CardTitle>📑 RFAs</CardTitle></CardHeader><CardContent><p className="text-3xl font-bold">—</p></CardContent></Card>
+        <Card><CardHeader><CardTitle>📐 Drawings</CardTitle></CardHeader><CardContent><p className="text-3xl font-bold">—</p></CardContent></Card>
+        <Card><CardHeader><CardTitle>📤 Transmittals</CardTitle></CardHeader><CardContent><p className="text-3xl font-bold">—</p></CardContent></Card>
+      </div>
 
-        <TabsContent value="overview">
-          <div className="grid gap-4 mt-4 md:grid-cols-3">
-            <Card>
-              <CardHeader>
-                <CardTitle>📑 RFAs</CardTitle>
-              </CardHeader>
-              <CardContent>
-                <p className="text-3xl font-bold">24</p>
-              </CardContent>
-            </Card>
-
-            <Card>
-              <CardHeader>
-                <CardTitle>📐 Drawings</CardTitle>
-              </CardHeader>
-              <CardContent>
-                <p className="text-3xl font-bold">112</p>
-              </CardContent>
-            </Card>
-
-            <Card>
-              <CardHeader>
-                <CardTitle>📤 Transmittals</CardTitle>
-              </CardHeader>
-              <CardContent>
-                <p className="text-3xl font-bold">8</p>
-              </CardContent>
-            </Card>
-          </div>
-        </TabsContent>
-
-        <TabsContent value="activity">
-          <div className="mt-4 space-y-3">
-            <p>
-              ✔️ User <b>editor01</b> uploaded Drawing D-2025-07
-            </p>
-            <p>✔️ Transmittal T-2025-02 issued to Contractor</p>
-            <p>✔️ RFA R-2025-03 marked as Resolved</p>
-          </div>
-        </TabsContent>
-      </Tabs>
-
-      <Button className="mt-6">Go to Dashboard</Button>
+      <div className="pt-2">
+        <Button asChild disabled={!me}><Link href="/dashboard">Go to Dashboard</Link></Button>
+        {!me && <span className="ml-2 text-sm text-muted-foreground">กรุณา Login ก่อน</span>}
+      </div>
     </div>
   );
 }