feat(hobbs-organizer): v1.3.0 photo gallery + Shield photo app 1.1, slideshow 15s

- /photo/gallery: D-pad grid, OK opens full screen, arrows browse, Back returns
- 400px gallery tiles cached per photo (sync + uploads)
- com.dayline.photos 1.1: launcher tile opens the gallery, takes remote input,
  Back steps through WebView history; screensaver unchanged
- slideshow interval 20s -> 15s (live settings)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01E9NnVEico3WvFxLyjy1iW3

tv app/Hobbs-Family-Organizer-Self-Hosted-v1.0.0/shield/photos-source/app/build.gradle

@@ -16,8 +16,8 @@ android {
         applicationId "com.dayline.photos"
         minSdk 26
         targetSdk 35
-        versionCode 1
-        versionName "1.0"
+        versionCode 2
+        versionName "1.1"
         buildConfigField "String", "DEFAULT_URL", "\"http://192.168.86.100:8340/photo\""
     }