Render complete Steam artwork for every sideload and fix VR shortcut identity

Add optional SteamGridDB settings, source-first fallbacks rendered with Steam canvas, backfill commands and shared APK/native library details. Verify live artwork and Open Saber Steam Play/Stop; document SuperTux's clipboard crash.

Co-Authored-By: GPT-6 Astra <noreply@openai.com>

app/package.json

@@ -46,7 +46,8 @@
         "to": "ui",
         "filter": [
           "*.py",
-          "*.html"
+          "*.html",
+          "*.js"
         ]
       },
       {
@@ -61,7 +62,8 @@
         "to": "frame/android",
         "filter": [
           "*.sh",
-          "*.py"
+          "*.py",
+          "*.js"
         ]
       },
       {