refactor: update import paths and benchmark discovery

Updated import paths to use direct module references instead of relative paths. Implemented dynamic benchmark discovery based on the contents of the tests/ directory, allowing for more flexible benchmark configuration without requiring code changes. This change improves maintainability and makes it easier to add new benchmarks.

scripts/generate_summarization_from_mongo.py

@@ -19,7 +19,7 @@ from pymongo import MongoClient
 sys.path.insert(0, str(Path(__file__).parent.parent))
 
 from src.constants import TEST_SEPARATOR
-from src.models.ollama_client import OllamaClient
+from ollama_client import OllamaClient
 
 def sanitize_filename(filename: str) -> str:
     """