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>

config/bundles.php

@@ -11,4 +11,6 @@ return [
     Symfony\Bundle\SecurityBundle\SecurityBundle::class => ['all' => true],
     Symfony\Bundle\MonologBundle\MonologBundle::class => ['all' => true],
     Symfony\Bundle\MakerBundle\MakerBundle::class => ['dev' => true],
+    DAMA\DoctrineTestBundle\DAMADoctrineTestBundle::class => ['test' => true],
+    Doctrine\Bundle\FixturesBundle\DoctrineFixturesBundle::class => ['dev' => true, 'test' => true],
 ];