Add comprehensive test suite for all new tools

tests/__init__.py

@@ -0,0 +1,3 @@
+"""
+Test suite for MCP tools.
+"""

tests/conftest.py

@@ -1,8 +1,7 @@
+from __future__ import annotations
+
 import pytest
+import sys
 from pathlib import Path
 
-TEST_ROOT = Path(__file__).parent
-
-@pytest.fixture
-def workspace(tmp_path):
-    return tmp_path
+sys.path.insert(0, str(Path(__file__).parent.parent))