fix: packageManager 제거 (corepack 권한 문제)

packageManager 필드가 corepack을 자동 활성화하여 일부 환경에서
/usr/local/share/corepack/v1 쓰기 권한 에러 발생.
CI에서는 pnpm/action-setup에서 직접 version: 10 명시.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: USEONGEE

.github/workflows/ci.yml

@@ -23,6 +23,8 @@ jobs:
       - uses: actions/checkout@v4
 
       - uses: pnpm/action-setup@v4
+        with:
+          version: 10
 
       - uses: actions/setup-node@v4
         with:
@@ -63,6 +65,8 @@ jobs:
       - uses: actions/checkout@v4
 
       - uses: pnpm/action-setup@v4
+        with:
+          version: 10
 
       - uses: actions/setup-node@v4
         with:

package.json

@@ -34,7 +34,6 @@
   "engines": {
     "node": "^20.0.0 || ^22.0.0"
   },
-  "packageManager": "pnpm@10.12.1",
   "dependencies": {
     "@modelcontextprotocol/sdk": "^1.27.1",
     "@msgpack/msgpack": "^3.1.3",