M5.1 OCR upload + parse + invoices CRUD (ERP)
- erp/ocr.py: FastAPI router under /api/erp/*
- POST /ocr/upload: file → pgz_sport.invoice_uploads (sha256, mime, klub_id, tenant_id)
- POST /ocr/parse: Tesseract+pdftotext OCR + DeepSeek V3 LLM extraction
- GET/POST/PUT /invoices, /invoices/{id}/pay, uploads list
- Wired into pgz_sport_api.py
- HR invoice regex (OIB, IBAN, datum DD.MM.YYYY i ISO, ukupno/PDV)
- DeepSeek V3 returns JSON object {izdavatelj_*, kupac_*, iznos_neto/pdv/brutto, stavke[], vrsta_troska...}
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
CC4-PGZ-Sport
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