🔧 chore: Claude Code 환경 설정 업데이트

- ENABLE_TOOL_SEARCH, CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS 환경변수 추가
- model 설정 추가 (opusplan)

.claude/settings.local.json

@@ -58,5 +58,10 @@
         ]
       }
     ]
-  }
-}
+  },
+  "env": {
+    "ENABLE_TOOL_SEARCH": "auto:5",
+    "CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS": "1"
+  },
+  "model": "opusplan"
+}