fix(build): align server tsdown toolchain

app/game-api/package.json

@@ -27,7 +27,7 @@
     },
     "devDependencies": {
         "@types/sanitize-html": "2.16.1",
-        "tsdown": "^0.18.4",
+        "tsdown": "^0.22.14",
         "vite-tsconfig-paths": "^6.0.3",
         "vitest": "^4.0.16"
     },