fix: .gitignore에서 .agent/ 트래킹 + 테스트 절대경로 제거 (이식성 보장)

tests/test_core.py

@@ -5,15 +5,18 @@ Tests against the variet-agent project itself.
 
 import sys
 import io
+import os
+
 if sys.stdout.encoding != "utf-8":
     sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding="utf-8", errors="replace")
-sys.path.insert(0, r"C:\Users\CafeVariet-GL552VW\Desktop\source_diff\variet-agent")
+
+# 프로젝트 루트를 동적으로 결정 (tests/ 상위 디렉토리)
+PROJECT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+sys.path.insert(0, PROJECT)
 
 from core.project_indexer import ProjectIndex
 from core.context_manager import ContextManager
 
-PROJECT = r"C:\Users\CafeVariet-GL552VW\Desktop\source_diff\variet-agent"
-
 
 def test_indexer():
     print("=" * 60)