fix(v2): preview rotation + crop aspect for 13.3" hardware

Two related bugs that surfaced on the first 13.3" device's first photo:

1) Web-UI portrait preview was 90° sideways. DeviceApiController::
   renderBinToPng rotated whenever the device was Portrait — correct
   for V1 (landscape-native, Portrait => renderer rotated, so preview
   un-rotates) but wrong for V2 (portrait-native — the renderer
   doesn't rotate, so the preview shouldn't either). Now mirrors the
   render-pipeline check: rotate only when `orientation !==
   model->nativeOrientation()`. Two new functional tests pin the V2
   portrait and V2 landscape PNG dimensions to guard against
   regressions.

2) Cropped photo letterboxed on the 13.3" panel. CropEditor /
   StickerCanvas / FrameCard had V1 dimensions hardcoded (1600×960
   = 5:3 aspect). V2 is 4:3 (1200×1600 portrait / 1600×1200
   landscape), so a "full crop" came out the wrong shape and the
   server's white-canvas composite added bars. New `panelDims(model,
   orientation)` helper in @/types is the single source of truth on
   the frontend; matches DeviceModel::width/height on the server.
   Threaded `model` through Device serializer → Device type →
   UploadView → CropEditor / StickerCanvas, and HomeView → FrameCard.
   FrameCard tests updated to cover all four model × orientation
   placeholders.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/Unit/Service/DeviceSerializerTest.php

@@ -34,7 +34,7 @@ class DeviceSerializerTest extends TestCase
         $payload = $this->serializer->serialize($device);
 
         $this->assertEqualsCanonicalizing(
-            ['id', 'mac', 'name', 'orientation', 'rotationIntervalMinutes',
+            ['id', 'mac', 'name', 'model', 'orientation', 'rotationIntervalMinutes',
              'wakeTimes', 'timezone', 'uniquenessWindow', 'rotationMode',
              'prioritizeNeverShown', 'linkedAt', 'lastSeenAt',
              'nextPollExpectedAt', 'lockedImageId', 'currentImageId'],
@@ -42,6 +42,14 @@ class DeviceSerializerTest extends TestCase
         );
     }
 
+    public function test_serializes_model_field(): void
+    {
+        $device = $this->makeDevice();
+        $device->setModel(\App\Enum\DeviceModel::V2);
+        $payload = $this->serializer->serialize($device);
+        $this->assertSame('v2', $payload['model']);
+    }
+
     public function test_serializes_scalars_in_expected_shapes(): void
     {
         $device = $this->makeDevice();