Inflows (claims) now shows only Certified invoice (VAT incl) and Retention
(ex VAT), fed by an Import certificate dialog that reads the PDF (INVOICE
TOTAL, this month's Less RETENTION, valuation number, date) for review
before saving. Adds a monthly + cumulative chart and a certificates table
linking each stored PDF.
- income_claims gains retention_amount and certificate (migration applied)
- pdftotext with an unpdf fallback for machines without poppler
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>