fix(clients): rebuild CKYC document upload as a popup with full proof details

The CKYC tab's document cards now open a dedicated dialog (with client-side
preview) instead of expanding inline, collecting document type, number, and
issue/expiry dates the same way client creation does. Fixes several bugs
found along the way:

- Uploading a document type that's valid for both identity and address
  (Aadhaar, Passport, etc.) no longer 404s or 500s — the "no such endpoint"
  and case-sensitive ClientIdentifierStatus.valueOf("Active") crashes are
  both resolved.
- Edit Client's Identity-proof and Address-proof steps no longer show each
  other's document when both are dual-purpose OVD types, and no longer show
  stale/mismatched front-back scans after a document type change.
- Address-proof's own document preview never showed a document at all when
  no m_client_kyc record existed yet.

Document number and issue/expiry dates are persisted on the identifier
(documentKey + a shared "Issue date: ..., Expiry date: ..." description
convention) and read back by both the CKYC tab and Edit Client so the same
details appear everywhere.

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

src/app/clients/create-client/create-client.component.ts

@@ -840,6 +840,15 @@ export class CreateClientComponent {
     this.saveAddressProof(clientId);
   }
 
+  /** "Issue date: yyyy-MM-dd, Expiry date: yyyy-MM-dd" — same convention the CKYC tab and
+   *  client-india-address-step's own "load existing" parsing both read back. */
+  private buildProofDescription(issueDate: string | null | undefined, expiryDate: string | null | undefined): string {
+    const parts: string[] = [];
+    if (issueDate) parts.push(`Issue date: ${issueDate}`);
+    if (expiryDate) parts.push(`Expiry date: ${expiryDate}`);
+    return parts.join(', ');
+  }
+
   /**
    * Save the address-proof picked on the permanent tab as a client identifier
    * + upload each selected file as a document attached to that identifier.
@@ -855,9 +864,9 @@ export class CreateClientComponent {
     const proofName = payload.proof?.name || 'Address Proof';
     const identifierData: any = {
       documentTypeId: payload.proofId,
-      status: 'Active',
+      status: 'ACTIVE',
       documentKey: payload.documentKey || `${proofName} - ${clientId}`,
-      description: payload.issueDate ? `Issue date: ${payload.issueDate}` : ''
+      description: this.buildProofDescription(payload.issueDate, payload.expiryDate)
     };
 
     this.clientsService.addClientIdentifier(clientId, identifierData).subscribe({
@@ -904,7 +913,7 @@ export class CreateClientComponent {
       }
       const identifierData: any = {
         documentTypeId,
-        status: 'Active',
+        status: 'ACTIVE',
         documentKey: payload.documentKey || `${proofName} - ${clientId}`,
         description: 'KYC document'
       };