feat: update backend OCR parser, web app, mobile app camera/preview UI, tests, and documentation with sample images

backend/config/pipeline_config_vllm.yaml

@@ -10,14 +10,14 @@ use_chart_recognition: False
 use_seal_recognition: False
 format_block_content: False
 merge_layout_blocks: True
-markdown_ignore_labels:
-  - number
-  - footnote
-  - header
-  - header_image
-  - footer
-  - footer_image
-  - aside_text
+markdown_ignore_labels: []
+  # - number
+  # - footnote
+  # - header
+  # - header_image
+  # - footer
+  # - footer_image
+  # - aside_text
 
 SubModules:
   LayoutDetection: