feat(sasch40): add retro birthday game subproject and k8s deployment

- Add Vue 3 + Vite + TypeScript retro game: 'Saschas Kronkorken Kreuzzug: 40 Jahre Bass & Gerstensaft'
- Add dynamic GameBoy layout: controls visible only during arcade modes, fullscreen during dialogue and tavern
- Add QR code welcome & prequel screen with lore, feature preview, and audio hints
- Add competitive party highscore and ranking breakdown on royal certificate
- Add dedicated individual 1:1 character portraits for Sascha, Verena, NAT, Hansi, Mop, Lutz, Armend, Amy, Mane, Pü, and Mario
- Add Dockerfile, Makefile, and K8s deployment at sasch40.haumdaucher.de
- Update openclaw timeout configuration

projects/sasch40/frontend/public/manifest.json

@@ -0,0 +1,18 @@
+{
+  "name": "Saschas Kronkorken Kreuzzug",
+  "short_name": "Sasch40",
+  "description": "40 Jahre Bass & Gerstensaft – Das epische Thronjubiläum",
+  "start_url": "/",
+  "display": "standalone",
+  "orientation": "portrait",
+  "background_color": "#1a0f0a",
+  "theme_color": "#d4af37",
+  "icons": [
+    {
+      "src": "/assets/ui/crown.svg",
+      "sizes": "any",
+      "type": "image/svg+xml",
+      "purpose": "any maskable"
+    }
+  ]
+}