refactor: update test setup, introduce system environment for commands, and streamline frontend build configuration.

app/gateway-frontend/package.json

@@ -14,6 +14,8 @@
     "dependencies": {
         "@sammo-ts/common": "workspace:*",
         "@sammo-ts/game-api": "workspace:*",
+        "@sammo-ts/gateway-api": "workspace:*",
+        "@sammo-ts/logic": "workspace:*",
         "@trpc/client": "^11.8.1",
         "@trpc/server": "^11.8.1",
         "@vueuse/core": "^13.9.0",