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feat(ocr): Implement persistent worker pool with SQLite job queue

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Major OCR infrastructure improvements:
- Add persistent SQLite-based job queue for OCR tasks
- Implement worker pool with process isolation and auto-restart
- Add OCR engine selector dropdown (Tesseract/PaddleOCR) in upload zone
- Optimize Tesseract preprocessing based on benchmark results (8x faster)
- Add recognize_cif_optimized() with multi-strategy CIF extraction
- Add Romanian CIF checksum validation
- Increase Telegram long polling timeout from 10s to 30s

Squashed commits:
- feat(ocr): Implement persistent worker pool with SQLite job queue
- feat(ocr): Add OCR engine selector dropdown to upload zone
- perf(telegram): Increase long polling timeout from 10s to 30s
- perf(ocr): Optimize Tesseract preprocessing based on benchmark results

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Marius Mutu
2025-12-31 12:32:12 +02:00
parent 00f826f7ed
commit 74f7aefc26
23 changed files with 3616 additions and 209 deletions
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2
backend/requirements.txt
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@@ -70,6 +70,8 @@ opencv-python>=4.8.0
pytesseract>=0.3.10
pdf2image>=1.16.0
numpy>=1.24.0
# Process management for OCR worker pool (Windows orphan cleanup)
psutil>=5.9.0
# ============================================================================
# TELEGRAM MODULE - Bot SDK