fix(server): resolve all TypeScript errors without unsafe type casts

Fix 20+ pre-existing TypeScript errors in the server package using
proper type-safe solutions — no `as any`, `as unknown`, or `any` types.

Key changes:
- Replace R.curry with regular curried arrow functions for proper inference
- Add return types to abstract methods (DynamicFilterRoleAbstractor)
- Add field declarations to empty models (ItemWarehouseQuantity)
- Add index signature to IMetadata for dynamic extra columns
- Use explicit field construction instead of pick()+cast patterns
- Convert moment format strings to Date objects where Date type expected
- Make interface properties optional where payloads don't include them
- Use native Array.reduce with proper typing instead of lodash chain

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

packages/server/src/modules/SaleInvoices/subscribers/InvoicePaymentIntegrationSubscriber.ts

@@ -32,14 +32,14 @@ export class InvoicePaymentIntegrationSubscriber {
 
     paymentMethods.map(
       async (paymentMethod: TransactionPaymentServiceEntry) => {
-        const payload = {
+        const payload: PaymentIntegrationTransactionLinkEventPayload = {
           ...omit(paymentMethod, ['id']),
           saleInvoiceId: saleInvoice.id,
           trx,
         };
         await this.eventPublisher.emitAsync(
           events.paymentIntegrationLink.onPaymentIntegrationLink,
-          payload as PaymentIntegrationTransactionLinkEventPayload,
+          payload,
         );
       },
     );
@@ -59,11 +59,11 @@ export class InvoicePaymentIntegrationSubscriber {
 
     paymentMethods.map(
       async (paymentMethod: TransactionPaymentServiceEntry) => {
-        const payload = {
+        const payload: PaymentIntegrationTransactionLinkDeleteEventPayload = {
           ...omit(paymentMethod, ['id']),
           oldSaleInvoiceId: oldSaleInvoice.id,
           trx,
-        } as PaymentIntegrationTransactionLinkDeleteEventPayload;
+        };
 
         // Triggers `onPaymentIntegrationDeleteLink` event.
         await this.eventPublisher.emitAsync(