Vertrag: Auftragsnummer Vertriebsplattform vor Kundennummer

Contract.orderNumberAtSalesPlatform (VARCHAR(191) NULL) mit
Migration 20260619100000_contract_order_number_at_sales_platform
(IF NOT EXISTS). Form-Input, Detail-Zeile mit Copy-Button,
Audit-Mapping, Renewal-Copy und XSS-Strip-Allowlist analog zu
den bestehenden Sales-Platform-Feldern.

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

frontend/src/pages/contracts/ContractDetail.tsx

@@ -2080,6 +2080,15 @@ export default function ContractDetail() {
                 </dd>
               </div>
             )}
+            {c.orderNumberAtSalesPlatform && (
+              <div>
+                <dt className="text-sm text-gray-500">Auftragsnr. Vertriebsplattform</dt>
+                <dd className="font-mono flex items-center gap-1">
+                  {c.orderNumberAtSalesPlatform}
+                  <CopyButton value={c.orderNumberAtSalesPlatform} />
+                </dd>
+              </div>
+            )}
             {c.customerNumberAtSalesPlatform && (
               <div>
                 <dt className="text-sm text-gray-500">Kundennr. Vertriebsplattform</dt>

frontend/src/pages/contracts/ContractForm.tsx

@@ -302,6 +302,7 @@ export default function ContractForm() {
         tariffName: c.tariffName || '',
         customerNumberAtProvider: c.customerNumberAtProvider || '',
         contractNumberAtProvider: c.contractNumberAtProvider || '',
+        orderNumberAtSalesPlatform: c.orderNumberAtSalesPlatform || '',
         customerNumberAtSalesPlatform: c.customerNumberAtSalesPlatform || '',
         contractNumberAtSalesPlatform: c.contractNumberAtSalesPlatform || '',
         priceFirst12Months: c.priceFirst12Months || '',
@@ -558,6 +559,7 @@ export default function ContractForm() {
       tariffName: emptyToNull(data.tariffName),
       customerNumberAtProvider: emptyToNull(data.customerNumberAtProvider),
       contractNumberAtProvider: emptyToNull(data.contractNumberAtProvider),
+      orderNumberAtSalesPlatform: emptyToNull(data.orderNumberAtSalesPlatform),
       customerNumberAtSalesPlatform: emptyToNull(data.customerNumberAtSalesPlatform),
       contractNumberAtSalesPlatform: emptyToNull(data.contractNumberAtSalesPlatform),
       priceFirst12Months: emptyToNull(data.priceFirst12Months),
@@ -956,6 +958,7 @@ export default function ContractForm() {
             />
             <Input label="Kundennummer beim Anbieter" {...register('customerNumberAtProvider')} />
             <Input label="Vertragsnummer beim Anbieter" {...register('contractNumberAtProvider')} />
+            <Input label="Auftragsnummer bei Vertriebsplattform" {...register('orderNumberAtSalesPlatform')} />
             <Input label="Kundennummer bei Vertriebsplattform" {...register('customerNumberAtSalesPlatform')} />
             <Input label="Vertragsnummer bei Vertriebsplattform" {...register('contractNumberAtSalesPlatform')} />
             <Input label="Provision (€)" type="number" step="0.01" {...register('commission')} />

frontend/src/types/index.ts

@@ -454,6 +454,7 @@ export interface Contract {
   tariffName?: string;
   customerNumberAtProvider?: string;
   contractNumberAtProvider?: string;
+  orderNumberAtSalesPlatform?: string;
   customerNumberAtSalesPlatform?: string;
   contractNumberAtSalesPlatform?: string;
   priceFirst12Months?: string;