feat(accounts): add Modify Application for rejected Current/Savings/FD/RD accounts

- Add 'Modify Application' button in kebab menu for rejected accounts (all 4 types)
- Rewrite edit components with tab-based UI matching create form
- Pre-populate all create-time values in edit form: product, account status,
  customer segment, account type, joint holders, nominees, introducer,
  deposit account link, senior citizen rate, tenure, flags (msme/balanceSwap/autoDebit)
- Fix edit mode detection using accountNo presence
- Add preselectedIntroducer @Input to IntroducerSearchComponent for pre-fill
- Support both camelCase and lowercase keys for joint holders (MySQL queryForList)
- Fix account number display: actual accountNo before previewAccountNo
- Fix cbsAccountType restore: cbsAccountType only, avoid Fineract enum object
- Add nominees fetch via /clients/{id}/nominees API in all 4 edit components
- Fix RD/FD Interest Rate Chart: SimpleChanges to prevent reset race condition
- Pre-check Senior Citizen checkbox in edit form from isSeniorCitizen DB field
- Auto-calculate rate when tenure pre-filled in edit mode
- FD calculator: use backend calculate-fd-interest API for all compounding types
- Support interestCompoundingPeriodInMonths=0 (daily) in FD calculator API

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/current-accounts/current-account-stepper/current-account-currency-step/current-account-currency-step.component.ts

@@ -29,6 +29,7 @@ export class CurrentAccountCurrencyStepComponent implements OnChanges {
   @Input() currentAccountProductTemplate: any;
   @Input() primaryClientId: number | null = null;
   @Input() isNonIndividualClient = false;
+  @Input() existingAccount: any = null;
   @ViewChild(NomineeFormComponent) nomineeFormComp: NomineeFormComponent;
 
   nominees: any[] = [];
@@ -41,8 +42,29 @@ export class CurrentAccountCurrencyStepComponent implements OnChanges {
   msme = false;
   autoDebitFacility = false;
 
+  private existingAccountApplied = false;
+
   ngOnChanges(changes: SimpleChanges): void {
-    if (changes['currentAccountProductTemplate']?.currentValue) {
+    if (changes['existingAccount']?.currentValue) {
+      const ea = changes['existingAccount'].currentValue;
+      this.existingAccountApplied = true;
+      if (ea.balanceSwapOption !== undefined) {
+        this.balanceSwapOption = !!ea.balanceSwapOption;
+      }
+      if (ea.msme !== undefined) {
+        this.msme = !!ea.msme;
+      }
+      if (ea.autoDebitFacility !== undefined) {
+        this.autoDebitFacility = !!ea.autoDebitFacility;
+      }
+      // nominees: try array first, then parse nomineeData JSON string
+      const nominees =
+        Array.isArray(ea.nominees) && ea.nominees.length > 0 ? ea.nominees : this.parseNomineeData(ea.nomineeData);
+      if (nominees.length > 0) {
+        this.nominees = [...nominees];
+      }
+    }
+    if (changes['currentAccountProductTemplate']?.currentValue && !this.existingAccountApplied) {
       const pt = changes['currentAccountProductTemplate'].currentValue;
       this.balanceSwapOption = !!pt.balanceSwapOption;
       this.msme = !!pt.msme;
@@ -50,6 +72,18 @@ export class CurrentAccountCurrencyStepComponent implements OnChanges {
     }
   }
 
+  private parseNomineeData(nomineeData: any): any[] {
+    if (!nomineeData) {
+      return [];
+    }
+    try {
+      const parsed = typeof nomineeData === 'string' ? JSON.parse(nomineeData) : nomineeData;
+      return Array.isArray(parsed) ? parsed : [];
+    } catch {
+      return [];
+    }
+  }
+
   get totalShare(): number {
     return this.nominees.reduce((sum, n) => sum + (+n.percentageShare || 0), 0);
   }