refactor(knowledge-base mcp server): adjust formatting for consistency and readability

Improved code formatting, line breaks, and indentation across chunking logic and multiple test modules to enhance code clarity and maintain consistent style. No functional changes made.

mcp-servers/knowledge-base/tests/test_exceptions.py

@@ -1,7 +1,6 @@
 """Tests for exception classes."""
 
 
-
 class TestErrorCode:
     """Tests for ErrorCode enum."""
 
@@ -10,8 +9,13 @@ class TestErrorCode:
         from exceptions import ErrorCode
 
         assert ErrorCode.UNKNOWN_ERROR.value == "KB_UNKNOWN_ERROR"
-        assert ErrorCode.DATABASE_CONNECTION_ERROR.value == "KB_DATABASE_CONNECTION_ERROR"
-        assert ErrorCode.EMBEDDING_GENERATION_ERROR.value == "KB_EMBEDDING_GENERATION_ERROR"
+        assert (
+            ErrorCode.DATABASE_CONNECTION_ERROR.value == "KB_DATABASE_CONNECTION_ERROR"
+        )
+        assert (
+            ErrorCode.EMBEDDING_GENERATION_ERROR.value
+            == "KB_EMBEDDING_GENERATION_ERROR"
+        )
         assert ErrorCode.CHUNKING_ERROR.value == "KB_CHUNKING_ERROR"
         assert ErrorCode.SEARCH_ERROR.value == "KB_SEARCH_ERROR"
         assert ErrorCode.COLLECTION_NOT_FOUND.value == "KB_COLLECTION_NOT_FOUND"