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/collection_manager.py

@@ -328,14 +328,18 @@ class CollectionManager:
                 "source_path": chunk.source_path or source_path,
                 "start_line": chunk.start_line,
                 "end_line": chunk.end_line,
-                "file_type": effective_file_type.value if (effective_file_type := chunk.file_type or file_type) else None,
+                "file_type": effective_file_type.value
+                if (effective_file_type := chunk.file_type or file_type)
+                else None,
             }
-            embeddings_data.append((
-                chunk.content,
-                embedding,
-                chunk.chunk_type,
-                chunk_metadata,
-            ))
+            embeddings_data.append(
+                (
+                    chunk.content,
+                    embedding,
+                    chunk.chunk_type,
+                    chunk_metadata,
+                )
+            )
 
         # Atomically replace old embeddings with new ones
         _, chunk_ids = await self.database.replace_source_embeddings(