root
20 lines
812 B
Markdown
20 lines
812 B
Markdown
# Shadow Comparison Plan
|
|
|
|
Run:
|
|
|
|
```bash
|
|
php artisan app:release-shadow-compare
|
|
```
|
|
|
|
Shadow mode compares legacy output to modular output without double-writing or double-sending. This matters because duplicating payments, attendance records, or family messages in the name of testing is the kind of innovation nobody asked for.
|
|
|
|
## Required Comparisons
|
|
|
|
- Finance: legacy balance vs modular BalanceCalculator/read model.
|
|
- Attendance: legacy scanner result vs modular ScannerService result.
|
|
- Students: legacy creation payload vs modular DTO/identifier strategy.
|
|
- Communication: legacy recipient query vs modular preview/dedupe/preferences.
|
|
- Reporting: legacy report output vs modular read-model-backed report.
|
|
|
|
Mismatch reports must include school, scenario, legacy value, modular value, severity, and owner.
|