{
  "name": "TuTu — TA & Language Tutor",
  "short_name": "TuTu",
  "description": "TuTu, your bilingual AI teaching assistant — TuTuはあなたのバイリンガルAI学習アシスタントです。",
  "theme_color": "#f4ebe0",
  "background_color": "#f4ebe0",
  "display": "standalone",
  "orientation": "portrait",
  "start_url": "/?source=pwa",
  "id": "/?source=pwa",
  "scope": "/",
  "lang": "en",
  "dir": "ltr",
  "icons": [
    {"src": "/icons/icon-192.png",          "sizes": "192x192",    "type": "image/png", "purpose": "any"},
    {"src": "/icons/icon-512.png",          "sizes": "512x512",    "type": "image/png", "purpose": "any"},
    {"src": "/icons/icon-maskable-512.png", "sizes": "512x512",    "type": "image/png", "purpose": "maskable"},
    {"src": "/icons/icon-1024.png",         "sizes": "1024x1024",  "type": "image/png", "purpose": "any"}
  ]
}