diff --git a/routes/web.php b/routes/web.php
index 36ebfe7..cce6cff 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -62,11 +62,14 @@ Route::get('/comments', fn () => redirect()->route('comments', [], 301));
 
 Route::get('/login.shtml', [AuthController::class, 'showLogin'])->name('login');
 Route::get('/login', fn () => redirect()->route('login', [], 301));
+Route::post('/login.shtml', [AuthController::class, 'login']);
 Route::post('/login', [AuthController::class, 'login']);
-Route::post('/logout', [AuthController::class, 'logout'])->name('logout');
+Route::post('/logout.shtml', [AuthController::class, 'logout'])->name('logout');
+Route::post('/logout', [AuthController::class, 'logout']);
 
 Route::get('/register.shtml', [AuthController::class, 'showRegister'])->name('register');
 Route::get('/register', fn () => redirect()->route('register', [], 301));
+Route::post('/register.shtml', [AuthController::class, 'register']);
 Route::post('/register', [AuthController::class, 'register']);
 
 Route::get('/profile.shtml', [AuthController::class, 'profile'])->middleware('auth')->name('profile');
diff --git a/storage/media-library/temp/8coBThtf4WJ0ffbwIAqkv2QrMZN15gFX/Fiu6NSdVADQ9oDKXbJE65jm9aDviZ0r2.jpg b/storage/media-library/temp/8coBThtf4WJ0ffbwIAqkv2QrMZN15gFX/Fiu6NSdVADQ9oDKXbJE65jm9aDviZ0r2.jpg
new file mode 100644
index 0000000..7e754f4
--- /dev/null
+++ b/storage/media-library/temp/8coBThtf4WJ0ffbwIAqkv2QrMZN15gFX/Fiu6NSdVADQ9oDKXbJE65jm9aDviZ0r2.jpg
@@ -0,0 +1 @@
+fake-jpg
\ No newline at end of file
diff --git a/storage/media-library/temp/8coBThtf4WJ0ffbwIAqkv2QrMZN15gFX/RpDtcdyiATFxTkvLRKMCBIrnWkztCygCthumb.jpg b/storage/media-library/temp/8coBThtf4WJ0ffbwIAqkv2QrMZN15gFX/RpDtcdyiATFxTkvLRKMCBIrnWkztCygCthumb.jpg
new file mode 100644
index 0000000..7e754f4
--- /dev/null
+++ b/storage/media-library/temp/8coBThtf4WJ0ffbwIAqkv2QrMZN15gFX/RpDtcdyiATFxTkvLRKMCBIrnWkztCygCthumb.jpg
@@ -0,0 +1 @@
+fake-jpg
\ No newline at end of file
diff --git a/storage/media-library/temp/9ldvdXYPdeQx2fISUeFvnGQ1nY67glDG/EMueufkOUXBhnIqQo4nvtCmGECl844vm.jpg b/storage/media-library/temp/9ldvdXYPdeQx2fISUeFvnGQ1nY67glDG/EMueufkOUXBhnIqQo4nvtCmGECl844vm.jpg
new file mode 100644
index 0000000..7e754f4
--- /dev/null
+++ b/storage/media-library/temp/9ldvdXYPdeQx2fISUeFvnGQ1nY67glDG/EMueufkOUXBhnIqQo4nvtCmGECl844vm.jpg
@@ -0,0 +1 @@
+fake-jpg
\ No newline at end of file
diff --git a/storage/media-library/temp/9ldvdXYPdeQx2fISUeFvnGQ1nY67glDG/kZmZZZbYcAwRfUjmTgsXoYqLg0azu9zZthumb.jpg b/storage/media-library/temp/9ldvdXYPdeQx2fISUeFvnGQ1nY67glDG/kZmZZZbYcAwRfUjmTgsXoYqLg0azu9zZthumb.jpg
new file mode 100644
index 0000000..7e754f4
--- /dev/null
+++ b/storage/media-library/temp/9ldvdXYPdeQx2fISUeFvnGQ1nY67glDG/kZmZZZbYcAwRfUjmTgsXoYqLg0azu9zZthumb.jpg
@@ -0,0 +1 @@
+fake-jpg
\ No newline at end of file
diff --git a/storage/media-library/temp/JW6LZAu63VEWMcsynT7soFxA1NSffMra/4NY67HytEGzdvdprotBZIMK0v30i96tf.jpg b/storage/media-library/temp/JW6LZAu63VEWMcsynT7soFxA1NSffMra/4NY67HytEGzdvdprotBZIMK0v30i96tf.jpg
new file mode 100644
index 0000000..7e754f4
--- /dev/null
+++ b/storage/media-library/temp/JW6LZAu63VEWMcsynT7soFxA1NSffMra/4NY67HytEGzdvdprotBZIMK0v30i96tf.jpg
@@ -0,0 +1 @@
+fake-jpg
\ No newline at end of file
diff --git a/storage/media-library/temp/JW6LZAu63VEWMcsynT7soFxA1NSffMra/cViWvK8Vtg0OqDKtbx8fe6q2b8Sl1a0vthumb.jpg b/storage/media-library/temp/JW6LZAu63VEWMcsynT7soFxA1NSffMra/cViWvK8Vtg0OqDKtbx8fe6q2b8Sl1a0vthumb.jpg
new file mode 100644
index 0000000..7e754f4
--- /dev/null
+++ b/storage/media-library/temp/JW6LZAu63VEWMcsynT7soFxA1NSffMra/cViWvK8Vtg0OqDKtbx8fe6q2b8Sl1a0vthumb.jpg
@@ -0,0 +1 @@
+fake-jpg
\ No newline at end of file
diff --git a/storage/media-library/temp/K2yY0dl0ZNNJ8GpyWuN5Xzvg81zylWCQ/5UprL9uJd1hb1G23T2ydz0tDikUg49aD.jpg b/storage/media-library/temp/K2yY0dl0ZNNJ8GpyWuN5Xzvg81zylWCQ/5UprL9uJd1hb1G23T2ydz0tDikUg49aD.jpg
new file mode 100644
index 0000000..7e754f4
--- /dev/null
+++ b/storage/media-library/temp/K2yY0dl0ZNNJ8GpyWuN5Xzvg81zylWCQ/5UprL9uJd1hb1G23T2ydz0tDikUg49aD.jpg
@@ -0,0 +1 @@
+fake-jpg
\ No newline at end of file
diff --git a/storage/media-library/temp/K2yY0dl0ZNNJ8GpyWuN5Xzvg81zylWCQ/db8FN6bCHXpIYSHY3yxpQuLbgc4ikGoUthumb.jpg b/storage/media-library/temp/K2yY0dl0ZNNJ8GpyWuN5Xzvg81zylWCQ/db8FN6bCHXpIYSHY3yxpQuLbgc4ikGoUthumb.jpg
new file mode 100644
index 0000000..7e754f4
--- /dev/null
+++ b/storage/media-library/temp/K2yY0dl0ZNNJ8GpyWuN5Xzvg81zylWCQ/db8FN6bCHXpIYSHY3yxpQuLbgc4ikGoUthumb.jpg
@@ -0,0 +1 @@
+fake-jpg
\ No newline at end of file
diff --git a/storage/media-library/temp/tfjrgdueXasxiqnS97Z2XrpFEcURNh9W/IPGaRZud4xYCcLOgRkfjFF7gcO48ovOHthumb.jpg b/storage/media-library/temp/tfjrgdueXasxiqnS97Z2XrpFEcURNh9W/IPGaRZud4xYCcLOgRkfjFF7gcO48ovOHthumb.jpg
new file mode 100644
index 0000000..7e754f4
--- /dev/null
+++ b/storage/media-library/temp/tfjrgdueXasxiqnS97Z2XrpFEcURNh9W/IPGaRZud4xYCcLOgRkfjFF7gcO48ovOHthumb.jpg
@@ -0,0 +1 @@
+fake-jpg
\ No newline at end of file
diff --git a/storage/media-library/temp/tfjrgdueXasxiqnS97Z2XrpFEcURNh9W/UDUyVVtSnvuYSjqOIOGn1XAD2ZObdZ1N.jpg b/storage/media-library/temp/tfjrgdueXasxiqnS97Z2XrpFEcURNh9W/UDUyVVtSnvuYSjqOIOGn1XAD2ZObdZ1N.jpg
new file mode 100644
index 0000000..7e754f4
--- /dev/null
+++ b/storage/media-library/temp/tfjrgdueXasxiqnS97Z2XrpFEcURNh9W/UDUyVVtSnvuYSjqOIOGn1XAD2ZObdZ1N.jpg
@@ -0,0 +1 @@
+fake-jpg
\ No newline at end of file
diff --git a/tests/Feature/AuthFlowTest.php b/tests/Feature/AuthFlowTest.php
new file mode 100644
index 0000000..39d493f
--- /dev/null
+++ b/tests/Feature/AuthFlowTest.php
@@ -0,0 +1,72 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AuthFlowTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->seed();
+    }
+
+    public function test_login_form_posts_to_shtml(): void
+    {
+        $this->post('/login.shtml', [
+            'email' => 'admin@laralog.test',
+            'password' => 'password',
+        ])->assertRedirect('/');
+
+        $this->assertAuthenticated();
+    }
+
+    public function test_register_form_posts_to_shtml(): void
+    {
+        $this->post('/register.shtml', [
+            'name' => '新用户',
+            'email' => 'new@test.com',
+            'password' => 'password123',
+            'password_confirmation' => 'password123',
+        ])->assertRedirect('/profile.shtml');
+
+        $this->assertAuthenticated();
+        $this->assertDatabaseHas('users', ['email' => 'new@test.com']);
+    }
+
+    public function test_logout_form_posts_to_shtml(): void
+    {
+        $user = User::where('email', 'admin@laralog.test')->first();
+        $this->actingAs($user)->post('/logout.shtml')->assertRedirect('/');
+
+        $this->assertGuest();
+    }
+
+    public function test_front_pages_use_shtml_links(): void
+    {
+        $user = User::create(['name' => '作者', 'email' => 'w@t.com', 'password' => bcrypt('x')]);
+        \App\Models\Post::create([
+            'user_id' => $user->id,
+            'title' => '链接测试',
+            'slug' => 'link-test',
+            'content' => '内容',
+            'content_format' => 'markdown',
+            'status' => 'published',
+            'published_at' => now(),
+        ]);
+
+        $html = $this->get('/')->getContent();
+
+        // 前台链接应生成 .shtml（不含硬编码无后缀路径）
+        $this->assertStringContainsString('/posts/link-test.shtml', $html);
+        $this->assertStringNotContainsString('href="/posts/link-test"', $html);
+        $this->assertStringNotContainsString('href="/archives"', $html);
+        $this->assertStringContainsString('href="http://laralog.test/archives.shtml"', $html);
+    }
+}