# 29. Implement Linux settings/preferences store

meta:
  id: native-business-logic-migration-29
  feature: native-business-logic-migration
  priority: P1
  depends_on: [native-business-logic-migration-17]
  tags: [implementation, linux, settings]

objective:
- Implement settings store using GSettings and JSON file

deliverables:
- settings-store.vala
- app-settings.vala
- reading-preferences.vala
- notification-preferences.vala
- GSettings schema

tests:
- Unit: Test property storage/retrieval
- Unit: Test defaults
- Unit: Test synchronization

acceptance_criteria:
- All settings persisted
- Defaults properly set
- Changes observed in real-time
- Settings follow XDG spec
- Settings migrated between versions

validation:
- Run `meson test -C build`
- Test with gsettings CLI

notes:
- Use GSettings for system integration
- Use JSON file for app-specific
- Follow XDG Base Directory spec