feat: redesign Hope voice experience

web/manifest.json

@@ -1,11 +1,11 @@
 {
-    "name": "Voice Assistant",
-    "short_name": "Voice",
-    "description": "Real-time voice assistant — Azure Speech + Gemma LLM",
+    "name": "Hope Voice Companion",
+    "short_name": "Hope",
+    "description": "A private, real-time voice companion with personal memory.",
     "start_url": "/",
     "display": "standalone",
-    "background_color": "#09090b",
-    "theme_color": "#09090b",
+    "background_color": "#08111f",
+    "theme_color": "#08111f",
     "icons": [
         {
             "src": "favicon.svg",