feat(ocr): Add parallel batch OCR processing via ThreadPoolExecutor#2197

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microsoft:mainfrom

echojfree:feat/ocr-parallel-batch-processing

Commits on Jul 7, 2026

feat(ocr): Add parallel batch OCR processing via ThreadPoolExecutor

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fix(ocr): Fix _llm_caption import path in PPTX converter

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perf(ocr): Reduce OCR DPI to 150 + parallel page rendering

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fix: Restore default ocr_dpi to 300 (keep original behavior)

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perf(ocr): Streaming pipeline — render+OCR concurrently

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Commits on Jul 8, 2026

fix(ocr): PPTX literal newlines + XLSX single-pass sheet read

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