Minor koa decorator fixes.

package-lock.json

@@ -221,13 +221,13 @@
       }
     },
     "node_modules/@types/node": {
-      "version": "25.5.2",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-25.5.2.tgz",
-      "integrity": "sha512-tO4ZIRKNC+MDWV4qKVZe3Ql/woTnmHDr5JD8UI5hn2pwBrHEwOEMZK7WlNb5RKB6EoJ02gwmQS9OrjuFnZYdpg==",
+      "version": "25.6.0",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-25.6.0.tgz",
+      "integrity": "sha512-+qIYRKdNYJwY3vRCZMdJbPLJAtGjQBudzZzdzwQYkEPQd+PJGixUL5QfvCLDaULoLv+RhT3LDkwEfKaAkgSmNQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "undici-types": "~7.18.0"
+        "undici-types": "~7.19.0"
       }
     },
     "node_modules/@types/qs": {
@@ -520,7 +520,6 @@
       "resolved": "https://registry.npmjs.org/koa/-/koa-3.2.0.tgz",
       "integrity": "sha512-TrM4/tnNY7uJ1aW55sIIa+dqBvc4V14WRIAlGcWat9wV5pRS9Wr5Zk2ZTjQP1jtfIHDoHiSbPuV08P0fUZo2pg==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "accepts": "^1.3.8",
         "content-disposition": "~1.0.1",
@@ -693,9 +692,9 @@
       }
     },
     "node_modules/undici-types": {
-      "version": "7.18.2",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.18.2.tgz",
-      "integrity": "sha512-AsuCzffGHJybSaRrmr5eHr81mwJU3kjw6M+uprWvCXiNeN9SOGwQ3Jn8jb8m3Z6izVgknn1R0FTCEAP2QrLY/w==",
+      "version": "7.19.2",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.19.2.tgz",
+      "integrity": "sha512-qYVnV5OEm2AW8cJMCpdV20CDyaN3g0AjDlOGf1OW4iaDEx8MwdtChUp4zu4H0VP3nDRF/8RKWH+IPp9uW0YGZg==",
       "dev": true,
       "license": "MIT"
     },