Fire records need more than invoice storage
An invoice may prove a vendor visit, but certificates and deficiency notes often carry the operational meaning.
The owner needs to see whether the system was inspected, whether deficiencies were identified, and whether follow-up happened.
Separate certificate dates from service dates
Certificate expiration and service date are different fields. Mixing them creates confusion when the owner reviews upcoming obligations.
Steward's data model keeps certificates and service events related but distinct.
Keep the binder logic, remove the binder burden
The digital packet should replicate the useful part of a binder: organized evidence a reviewer can inspect.
It should not depend on someone remembering which folder has the latest PDF.