chore: stage all in-progress work before repo split

Web app: new entities (Image, RenderedAsset, SharedImage, Token,
DeviceImageHistory), enums, repositories, controllers, message handlers,
migrations, tests, frontend upload/library/sticker UI, Vue components.

Firmware: EPD background screen binaries + gen scripts, setup_bg header.

Infra: ddev config, test bundle, gitignore coverage dir.

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

src/Enum/DeviceModel.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Enum;
+
+enum DeviceModel: string
+{
+    case V1 = 'v1'; // Waveshare 7.3" 800×480
+
+    public function width(Orientation $orientation): int
+    {
+        return $orientation === Orientation::Portrait ? 480 : 800;
+    }
+
+    public function height(Orientation $orientation): int
+    {
+        return $orientation === Orientation::Portrait ? 800 : 480;
+    }
+}

src/Enum/RenderStatus.php

@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Enum;
+
+enum RenderStatus: string
+{
+    case Pending    = 'pending';
+    case Processing = 'processing';
+    case Ready      = 'ready';
+    case Failed     = 'failed';
+}

src/Enum/SharedImageStatus.php

@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Enum;
+
+enum SharedImageStatus: string
+{
+    case Pending  = 'pending';
+    case Approved = 'approved';
+    case Declined = 'declined';
+}

src/Enum/TokenType.php

@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Enum;
+
+enum TokenType: string
+{
+    case ShareApprove      = 'share_approve';
+    case ShareDecline      = 'share_decline';
+    case HardDeleteConfirm = 'hard_delete_confirm';
+}