structlog output is not captured by pytest caplog — log assertions fail suite-wide

[Aburke225]

The application logs through structlog, which is not configured to propagate into the stdlib logging system during tests. Every test asserting on caplog (e.g. test_empty_chunks_list_returns_empty in tests/unit/test_batch_processor.py) fails even though the code under test does emit the expected log event. Configure structlog in tests/conftest.py (e.g. via structlog.stdlib processors or capture_logs) so caplog-based assertions work.

Steps to reproduce: pytest tests/unit/test_batch_processor.py::TestBatchEmbeddingProcessor::test_empty_chunks_list_returns_empty -q — observed: assertion on caplog fails while the warning is visibly printed to stderr.