feat: integrate Spatie Media Library (#4)

- Added Spatie Media Library
- Added media library configuration file
- Updated Entry model to support media handling
- Added featured image upload with gallery selection and preview
- Added login tests with Dusk for user authentication
- Added Dusk test for featured image selection

Co-authored-by: jon brookes <marshyon@gmail.com>
Reviewed-on: https://codeberg.org/headshed/share-lt/pulls/4

tests/Browser/001_LoginDashAdminTest.php

@@ -0,0 +1,60 @@
+<?php
+
+namespace Tests\Browser;
+
+use Illuminate\Foundation\Testing\DatabaseTruncation;
+use Laravel\Dusk\Browser;
+use Tests\Browser\Concerns\AuthenticatesUsers;
+use Tests\DuskTestCase;
+
+class LoginTest extends DuskTestCase
+{
+    use DatabaseTruncation;
+    use AuthenticatesUsers; 
+        
+    public function test_login(): void
+    {
+        $user = $this->createTestUser("login-test@example.com");
+
+        $this->browse(function (Browser $browser) use ($user) {
+            $this->loginUser($browser, $user);
+            $this->assertWithDebugPause($browser, fn($b) => 
+                $b->assertPathIs('/dashboard'),
+                1000  // Custom pause time for this test
+            );
+        });
+    }
+
+    public function test_invalid_login(): void
+    {
+        $user = $this->createTestUser("invalid-email@example.com");
+
+        $this->browse(function (Browser $browser) use ($user) {
+            $this->loginUser($browser, $user);
+            $this->assertWithDebugPause($browser, fn($b) => 
+                $b->visit('/admin')
+                    ->waitForLocation('/admin')
+                    ->assertPathIs('/admin')
+                    ->assertSee('FORBIDDEN'),
+                1000  // Custom pause time for this test
+            );
+        });
+    }
+
+    public function test_access_admin_panel(): void
+    {
+        $user = $this->createTestUser("login-test@example.com");
+
+        $this->browse(function (Browser $browser) use ($user) {
+            $this->loginUser($browser, $user);
+            $this->assertWithDebugPause($browser, fn($b) => 
+                $b->visit('/admin')
+                    ->waitForLocation('/admin')
+                    ->assertPathIs('/admin')
+                    ->assertTitleContains('Dashboard')
+                    ->assertDontSee('FORBIDDEN'),
+                1000  // Custom pause time for this test
+            );
+        });
+    }
+}