fix(clients): stale signature bug, monthly turnover/annual income fields, senior citizen/PWD classification

- Fix signature-document reads picking the oldest upload instead of the latest across 7 call
  sites (CKYC tab, view/delete-signature dialogs, edit-wizard preview, cashier transaction entry,
  signatory service, record-master) by sorting on document id instead of an unsorted find().
- Add Monthly Turnover and Annual Income fields alongside the renamed Yearly Turnover field.
- Add Senior Citizen (auto-detected from DOB) and Person with Disability classification, with a
  required disability-certificate upload gate before client creation can proceed.
- Add Graduate and Diploma as distinct Education Levels, with diploma-specific degree options.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/app/clients/clients-view/ckyc-tab/ckyc-tab.component.ts

@@ -234,8 +234,12 @@ export class CkycTabComponent implements OnInit, OnDestroy {
           };
         }
 
-        // 2. Signature — client document with name='clientSignature'
-        const signatureDoc = (documents as any[])?.find((d: any) => d?.name === 'clientSignature');
+        // 2. Signature — client document with name='clientSignature'. Multiple rows can exist
+        // for clients who re-cropped/replaced their signature before uploads became single-slot,
+        // so pick the highest id (latest) rather than the first unordered match.
+        const signatureDoc = (documents as any[])
+          ?.filter((d: any) => d?.name === 'clientSignature')
+          ?.sort((a: any, b: any) => b.id - a.id)?.[0];
         if (signatureDoc) {
           this.existing.CLIENT_SIGNATURE = {
             present: true,

src/app/clients/clients-view/custom-dialogs/delete-signature-dialog/delete-signature-dialog.component.ts

@@ -47,7 +47,13 @@ export class DeleteSignatureDialogComponent {
    * @param {any} data Documents data
    */
   constructor() {
-    const signature = this.data.find((document: any) => document.name === 'clientSignature') || {};
+    // Multiple 'clientSignature' documents can exist for clients who re-cropped/replaced their
+    // signature before uploads became single-slot, so pick the highest id (latest) rather than
+    // the first unordered match.
+    const signature =
+      this.data
+        .filter((document: any) => document.name === 'clientSignature')
+        .sort((a: any, b: any) => b.id - a.id)[0] || {};
     this.signatureId = signature.id;
   }
 }

src/app/clients/clients-view/custom-dialogs/view-signature-dialog/view-signature-dialog.component.ts

@@ -65,7 +65,13 @@ export class ViewSignatureDialogComponent implements OnInit {
    * @param {any} data Documents data
    */
   constructor() {
-    const signature = this.data.documents.find((document: any) => document.name === 'clientSignature') || {};
+    // Multiple 'clientSignature' documents can exist for clients who re-cropped/replaced their
+    // signature before uploads became single-slot, so pick the highest id (latest) rather than
+    // the first unordered match.
+    const signature =
+      this.data.documents
+        .filter((document: any) => document.name === 'clientSignature')
+        .sort((a: any, b: any) => b.id - a.id)[0] || {};
     this.signatureId = signature.id;
     this.clientId = this.data.id;
   }