feat: add idempotency support for settlement adjustments and payments, fix rebate handling

- Added idempotency_key parameter to settlement bill adjustment and payment endpoints to prevent duplicate operations
- Fixed player rebate profile updates to preserve existing values when only one field is modified
- Moved wallet player validation earlier in AdminPlayerStoreController to prevent unnecessary processing
- Enhanced extra rebate calculation to include 'in_bill' and 'settled' statuses in AgentP

app/Http/Requests/Admin/AdminSettlementBillAdjustmentRequest.php

@@ -17,6 +17,7 @@ final class AdminSettlementBillAdjustmentRequest extends ApiFormRequest
             'amount' => ['required', 'integer', 'not_in:0'],
             'adjustment_type' => ['sometimes', 'string', 'in:adjustment,reversal'],
             'reason' => ['sometimes', 'nullable', 'string', 'max:255'],
+            'idempotency_key' => ['sometimes', 'nullable', 'string', 'max:64'],
         ];
     }
 }

app/Http/Requests/Admin/AdminSettlementBillPaymentRequest.php

@@ -18,6 +18,7 @@ final class AdminSettlementBillPaymentRequest extends ApiFormRequest
             'method' => ['sometimes', 'nullable', 'string', 'max:32'],
             'proof' => ['sometimes', 'nullable', 'string', 'max:2000'],
             'remark' => ['sometimes', 'nullable', 'string', 'max:255'],
+            'idempotency_key' => ['sometimes', 'nullable', 'string', 'max:64'],
         ];
     }
 }