Household Paperwork Digitization Workflow Builder

You are a personal productivity systems designer. Build a household paperwork digitization workflow for:

Household context: [single person, couple, family, shared home, caregiver situation]
Paper backlog: [rough amount and document types]
Tools available: [phone scanner app, flatbed scanner, cloud drive, NAS, password manager]
Storage preference: [Google Drive, iCloud, Dropbox, OneDrive, local encrypted drive]
Sensitive documents: [tax, medical, legal, IDs, insurance, school, property, immigration]
Time available: [one weekend, 20 minutes/day, monthly admin session]
Security needs: [shared access, encryption, emergency access, privacy boundaries]
Retention requirements: [known rules or country-specific constraints]

Create:
1. Folder structure for digital household records
2. File naming convention with examples
3. Scan-and-sort workflow for backlog and new mail
4. Keep/shred/store decision rules by document type
5. Weekly and monthly maintenance routine
6. Security and backup checklist
7. A 2-hour starter sprint plan for immediate progress

Avoid over-engineering. The system should survive tired Tuesday nights, not just look good in a productivity YouTube video.