Two issues caused the rate import to fail with 1237 'Out of range
value for column rate' errors:
1. The rate column was decimal(12,4) — max ~100 million. Converted
IRR values for larger shipments exceed this. Migrate to
decimal(20,4) which handles up to ~100 trillion.
2. The fallback AED→IRR rate in config/ifnex.php was 455,000 (way
too high — should be ~14,000). Update to a realistic market rate.
Also improve the CurrencyResource helperText to remind users to
enter rates in Rials (not Tomans) and provide realistic examples
for AED, USD, and EUR.
Refactor the currency management system to eliminate the redundant
`rate_to_aed` field and transition to a single-base model where all
rates are stored relative to the Iranian Rial (IRR).
Key changes:
- Removed `rate_to_aed` from `currencies` table via new migration.
- Updated `ExchangeRateService` to handle rates using a single
`currency_code` parameter instead of currency pairs.
- Refactored `UpdateExchangeRates` command to fetch rates from the
Exir.io API and support multiple currencies (AED, USD, EUR, CNY).
- Updated Filament resources (`CurrencyResource`,
`ExchangeRateHistoryResource`) and widgets to reflect the new
single-base architecture.
- Improved `PriceCalculatorService` to use the updated service
methodology for fetching the AED/IRR conversion rate.
- Localized console command output to Persian.
Introduce a new currency management module including a dedicated
resource, database migration, and a custom Filament page for importing
exchange rates. Additionally, enhance the ShipmentResource table with
improved column visibility, sorting, and route display, and integrate
shipment update notifications.
