Changed source_url from API endpoint (bedesten.adalet.gov.tr/document/{id})
to user-facing URL (mevzuat.adalet.gov.tr/ictihat/{id}) for direct browser access.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Add comprehensive null safety checks for document API response fields
to prevent null type errors when accessing doc_response.data properties.
- Check if doc_response.data exists before accessing
- Validate content and mimeType fields before processing
- Add error handling for base64 decoding failures
- Provide descriptive error messages for debugging
- Prevents 'null type' errors in get_bedesten_document_markdown
