Receipt Tracker

A multi-user PWA that turns a receipt photo into a tidy budget entry — Gemini OCR extracts merchant, total, date, and category. I scoped every endpoint per user (down to the SSE-stream and image-serving seams), made the usage quota concurrency-safe with transactional row locks, and added a janitor that reclaims OCR jobs stranded by a mid-process redeploy. More recently I added a weekly report that emails cron-scheduled spending insights.