Remove E2EE and switch to plaintext messaging

🤖 Generated with [Claude Code](https://claude.com/claude-code)

apps/admin/package.json

@@ -30,9 +30,11 @@
         "emoji-mart": "^5.6.0",
         "lucide-react": "^0.309.0",
         "openai": "^4.24.0",
-        "react": "^18.2.0",
-        "react-dom": "^18.2.0",
-        "react-router-dom": "^6.21.0",
+        "react": "^18.2.0",
+        "react-dom": "^18.2.0",
+        "react-icons": "^4.12.0",
+        "react-router-dom": "^6.21.0",
+
         "recharts": "^3.6.0",
         "sonner": "^1.3.1",
         "tailwind-merge": "^2.2.0"