Strengthen weak assertions in context enhancement and converter tests

- Add doc_item_refs and headings assertions to test_expand_context_docling_merges_metadata
- Add page count and markdown content assertions to test_convert_pdf_with_ocr_engine

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

CHANGELOG.md

@@ -1,6 +1,10 @@
 # Changelog
 ## [Unreleased]
 
+### Changed
+
+- **Test suite cleanup**: Removed stale VCR cassettes, dead fixtures, orphaned directories, and redundant tests. Strengthened weak assertions across search, context enhancement, and converter tests. Relocated misplaced `SearchResult._get_primary_label` test to `test_search.py`
+
 ## [0.33.0] - 2026-03-04
 
 ### Added

tests/test_context_enhancement.py

@@ -642,6 +642,10 @@ First paragraph of results.
                 assert len(r.content) > 0
                 # Score should be preserved (best score)
                 assert r.score in [0.9, 0.8]
+                # Expanded content should have docling refs
+                assert r.doc_item_refs is not None and len(r.doc_item_refs) > 0
+                # Document has headings, expanded result should too
+                assert r.headings is not None and len(r.headings) > 0
 
 
 def create_picture_document() -> DoclingDocument:

tests/test_converters.py

@@ -1067,6 +1067,8 @@ class TestDoclingServeConverterIntegration:
 
         doc = await converter.convert_file(pdf_path)
         assert isinstance(doc, DoclingDocument)
+        assert len(doc.pages) > 0
+        assert len(doc.export_to_markdown().strip()) > 100
 
     @pytest.mark.xfail(
         reason="docling-serve does not return picture image data in JSON response "