fix: add OCR timeout warning for large scanned PDFs

OCR is CPU-intensive; default 30s timeout causes fallback on large documents.
Verified by running --force-ocr against PDFUA-Ref-2-09_Scanned.pdf.

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

Author: bundolee

README.md

@@ -290,6 +290,8 @@ opendataloader-pdf-hybrid --port 5002 --ocr-lang "ko,en"
 
 > **Note**: Standard digital PDFs do not need `--force-ocr`. Use it only for scanned or image-based PDFs.
 
+> **Timeout**: OCR is CPU-intensive. For large scanned documents, increase the timeout: `opendataloader-pdf --hybrid docling-fast --hybrid-timeout 120000 input-scanned.pdf`
+
 ### Picture / Chart Description (Alt Text)
 
 Generate AI-powered descriptions for images and charts in your PDFs. Useful for accessibility (alt text) and making visual content searchable in RAG pipelines.

content/docs/hybrid-mode.mdx

@@ -209,6 +209,11 @@ docker run -p 5002:5002 ghcr.io/opendataloader-project/opendataloader-pdf-hybrid
 
 > **Note**: Standard digital PDFs do not need `--force-ocr`. Use it only for scanned or image-based PDFs where text cannot be selected.
 
+> **Timeout**: OCR is CPU-intensive. For large scanned documents, increase the timeout (default is 30s per batch):
+> ```bash
+> opendataloader-pdf --hybrid docling-fast --hybrid-timeout 120000 input-scanned.pdf
+> ```
+
 ## Chart and Image Description
 
 Generate AI-powered natural language descriptions for images and charts in your PDFs. This makes visual content searchable in RAG pipelines and produces alt text for accessibility.