Need automatic before/after photo reports for completed cleaning jobs

We run a small cleaning company and want to stop manually assembling completion reports after every job. Right now a supervisor collects photos from each cleaner's phone, matches them up by address, and pastes everything into a document by hand before sending it to the client — this eats an hour or more per job, and mistakes happen: wrong photos attached, zones missed, reports sent a day late. We need a workflow that takes the same photos cleaners already shoot on site and turns them into a finished report on its own.

The idea: each cleaner photographs every room before starting and again right after finishing, and the system pairs those shots by zone label and job number. Once all zones are marked done, a report is generated automatically — before/after pairs in a fixed layout, address, time in and time out, list of zones covered — and it goes to the client's email or messenger without a supervisor touching it. The logic should catch a missing photo before the report goes out, not after a client complains.

What we need from a freelancer:
— photo capture and pairing flow, reliable over a weak site connection
— automatic report generation and delivery, no manual steps
— zone checklist per service type, validating both photos exist
— a dashboard showing which jobs are still missing photos

Ideally this connects to our current scheduling tool, but a standalone solution works too. Describe your approach and rough timeline.