Move request parsing into DTOs via fromRequest(), expand update handler

Each DTO now owns its own parsing logic via fromRequest(), removing
the normalization layer from MicropubRequest entirely. UpdateHandler
gains delete support and allows replace/add/delete to compose in a
single request rather than being mutually exclusive.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/Services/Micropub/Data/CardData.php

@@ -4,6 +4,9 @@ declare(strict_types=1);
 
 namespace App\Services\Micropub\Data;
 
+use Illuminate\Http\Request;
+use Illuminate\Support\Arr;
+
 class CardData extends MicropubData
 {
     public function __construct(
@@ -16,6 +19,33 @@ class CardData extends MicropubData
         public readonly ?string $longitude,
     ) {}
 
+    public static function fromRequest(Request $request): static
+    {
+        if ($request->isJson()) {
+            $data = $request->json()->all();
+
+            return new static(
+                tokenData: $data['token_data'],
+                name: Arr::get($data, 'properties.name.0'),
+                description: Arr::get($data, 'properties.description.0'),
+                geo: Arr::get($data, 'properties.geo.0'),
+                location: Arr::get($data, 'properties.location'),
+                latitude: null,
+                longitude: null,
+            );
+        }
+
+        return new static(
+            tokenData: $request->input('token_data'),
+            name: $request->input('name'),
+            description: $request->input('description'),
+            geo: $request->input('geo'),
+            location: $request->input('location'),
+            latitude: $request->input('latitude'),
+            longitude: $request->input('longitude'),
+        );
+    }
+
     public static function fromArray(array $data): static
     {
         return new static(