Sync from GitHub main 5f78bef: price-column drift correction

Retrigger build: previous build stuck in RUNNING_BUILDING

Sync from GitHub main cf55aeb: merchant fallback for unknown shops, qty-column extraction, amount-due totals vocab, mojibake currency tolerance, skewed-photo totals fix (labelled TOTAL beats standalone price; negative subtotal recovered from row above)

Sync from GitHub main: parser fixes (SUB-TOTAL, 2-digit qty, barcode strip), ISO dates, conditional second OCR pass, non-blocking model load, OCR_SHARED_SECRET gate + 15MB cap, TIMING behind env var

Reconcile with GitHub repo (diverged since 2026-05-20)

fix(parser): detect Co-op via tagline, BALANCE DUE as total, strip inline qty, filter CREDIT/DEBIT

fix(logging): use print(flush=True) for TIMING lines so they appear in HF logs

perf(ocr): raise image cap to 4096px for higher quality

revert(ocr): remove invalid det_model parameter

perf(ocr): switch to mobile detection model for faster CPU inference

perf(ocr): cap image at 2048px for dual-pass speed improvement

fix(ocr): run warm-up in background so server accepts connections immediately

revert(ocr): restore dual-pass and 4096px, keep timing logs

chore(ocr): add per-step timing logs to identify bottleneck

perf(ocr): increase max image size to 2048px for better accuracy

perf(ocr): halve inference time on free CPU tier

fix(ocr): warm up inference engine at startup and add /warmup endpoint

feat: initial OCR server deploy

initial commit