fix: restore content silently dropped from the dev merge (KYC exception, TDS reports, Form 121)

The demo-backup merge's git 3-way auto-resolve dropped several hunks
without flagging conflicts, wherever demo had independently touched
adjacent lines: the KYC Exception feature (client-kyc-step, kyc-tab,
create-client, clients.service — checkbox, derivation logic, banners,
contact-log endpoints), TDS report routes/menu links (reports-routing,
shell), the Form 121 client tab (clients-routing, clients-view), the
kyc-management exceptions dashboard, and the Form 121/15G-H register's
real-data view integration. Restored by diffing demo-backup against
dev per file and re-applying each genuine gap while preserving
demo-backup's own independent work (Approval Center tab style, Loan
Origination/Investment menus, form-97-98/risk-review report routes).

src/app/clients/client-stepper/client-general-step/client-general-step.component.ts

@@ -966,6 +966,38 @@ export class ClientGeneralStepComponent implements OnInit, OnDestroy, OnChanges
 
     this.linkMonthlyAnnual('monthlyIncome', 'annualIncome');
     this.linkMonthlyAnnual('monthlyTurnover', 'annualTurnover');
+    this.linkIncomeToTurnover();
+  }
+
+  /**
+   * Auto-calculates turnover based on income (doubling monthly income for monthly turnover,
+   * and annual income for annual/yearly turnover).
+   */
+  private linkIncomeToTurnover(): void {
+    const monthlyIncome = this.createClientForm.get('monthlyIncome');
+    const monthlyTurnover = this.createClientForm.get('monthlyTurnover');
+    const annualIncome = this.createClientForm.get('annualIncome');
+    const annualTurnover = this.createClientForm.get('annualTurnover');
+
+    if (monthlyIncome && monthlyTurnover) {
+      monthlyIncome.valueChanges.subscribe((value) => {
+        if (this.suppressMonthlyAnnualLink) {
+          return;
+        }
+        const num = parseFloat(value);
+        monthlyTurnover.setValue(!isNaN(num) && num >= 0 ? this.round2(num * 2) : '', { emitEvent: true });
+      });
+    }
+
+    if (annualIncome && annualTurnover) {
+      annualIncome.valueChanges.subscribe((value) => {
+        if (this.suppressMonthlyAnnualLink) {
+          return;
+        }
+        const num = parseFloat(value);
+        annualTurnover.setValue(!isNaN(num) && num >= 0 ? this.round2(num * 2) : '', { emitEvent: true });
+      });
+    }
   }
 
   /**