Cleaning and sanitation journal. Daily routine cleaning: which rooms were cleaned, which detergents and disinfectants were used, who carried out the work and who checked it.
The cleaning log records every washing cycle for areas and utensils, including the cleaning product and concentration. The electronic form prevents a record from being closed with a required field missing, so the inspector always sees the complete picture.

Required fields: List of rooms; Product used + concentration; Daily mark: routine or deep cleaning; Persons responsible for cleaning and supervision. An empty field is equivalent to an incomplete log for an inspector, so use a dash deliberately and include an explanation.
Every shift: make the entry on the day of the event. Do not backdate entries: uniform dates and identical values are precisely how inspectors identify record keeping done only as a formality.
SanPiN 2.3/2.4.4282-26. Include the regulatory reference on the title page so the inspector can immediately see why the log is kept.
Yes. SanPiN 2.3/2.4.4282-26 does not require paper: the important points are being able to see who made an entry and when, and preventing unnoticed retrospective changes. For an inspection, print the electronic log for the required period.
Inspectors usually request records for the last 12 months, so one year is a practical minimum. Keep logs connected with a food poisoning investigation or a complaint until the proceedings are closed.