Add test files (indexers, search, CLI, integration)

tests/test_integration.py

@@ -1,11 +1,9 @@
 """Integration tests for the complete workflow."""
 
 import pytest
-from pathlib import Path
 from unittest.mock import Mock, patch
 
 from src.cli.commands import cli
-from src.search.searcher import Searcher
 from src.models.document import Document, SourceType, SearchResult