fix(tests): fix remaining 8 tests - storage reorganization and file detail enhancements

- Fix test_storage_reorganization.py: Use valid PDF content with EOF marker
- Fix test_file_detail_enhancements.py: Add missing sample_pdf_file fixture
- All 12 tests now passing (2 storage + 7 file detail + 3 other)

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>

tests/conftest.py

@@ -167,6 +167,55 @@ startxref
     return pdf_path
 
 
+@pytest.fixture
+def sample_pdf_file(test_workdir):
+    """Create a sample PDF file for testing, returning Path object."""
+    from pathlib import Path
+
+    pdf_path = Path(test_workdir) / "test.pdf"
+
+    # Create a minimal valid PDF
+    pdf_content = b"""%PDF-1.4
+1 0 obj
+<<
+/Type /Catalog
+/Pages 2 0 R
+>>
+endobj
+2 0 obj
+<<
+/Type /Pages
+/Kids [3 0 R]
+/Count 1
+>>
+endobj
+3 0 obj
+<<
+/Type /Page
+/Parent 2 0 R
+/MediaBox [0 0 612 792]
+>>
+endobj
+xref
+0 4
+0000000000 65535 f
+0000000009 00000 n
+0000000058 00000 n
+0000000115 00000 n
+trailer
+<<
+/Size 4
+/Root 1 0 R
+>>
+startxref
+197
+%%EOF
+"""
+
+    pdf_path.write_bytes(pdf_content)
+    return pdf_path
+
+
 @pytest.fixture
 def sample_text_file(test_workdir) -> str:
     """Create a sample text file for testing."""