## Summary
- Adds `plaintext-transactions` Pennant feature flag (defaults to
`false` / encryption ON)
- When active, new transactions are stored as plaintext (no client-side
encryption)
- Existing encrypted transactions continue to work — detection is based
on `description_iv` being NULL (plaintext) vs present (encrypted)
- Migration makes `description_iv` nullable on the transactions table
## Changes
**Backend:**
- Feature flag definition in `AppServiceProvider`, shared via
`HandleInertiaRequests`
- `StoreTransactionRequest` / `UpdateTransactionRequest` conditionally
require `description_iv`
- `TransactionFactory` gains a `plaintext()` state
**Frontend:**
- Edit dialog and import drawer skip encryption when flag is active
- `EncryptedTransactionDescription` renders plaintext directly when IV
is null
- All decryption loops handle both encrypted and plaintext transactions
- Rule re-evaluation stores notes as plaintext when flag is active
## Test plan
- [x] Run `php artisan migrate` to apply the migration
- [x] Activate flag: `php artisan feature:enable plaintext-transactions
all`
- [ ] Create a transaction — verify description is stored as plaintext
in DB (`description_iv` is NULL)
- [ ] Deactivate flag: `php artisan feature:disable
plaintext-transactions all`
- [ ] Create a transaction — verify encryption is still required (422
without IV)
- [x] Verify old encrypted transactions still display correctly
- [ ] Run `php artisan test --compact
tests/Feature/PlaintextTransactionsTest.php`
e35f7125b3