feat: Client & CKYC UI improvements — filters, KYC management, image crop+merge

- Clients list: CKYC icon, CKYC Number column, status/legal form/CKYC filters
- CKYC: SFTP upload logs, date formatting, modal z-index fix, non-dismissible dialogs
- KYC Management: new standalone module with alert dashboard, notification scheduler, audit inventory, account status
- Image cropper: ngx-image-cropper integration for front+back document merge into single PNG
- Sidebar: KYC Management menu entry after CKYC

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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

@@ -619,6 +619,7 @@
                 <span class="sig-table__col sig-table__col--name">Name</span>
                 <span class="sig-table__col sig-table__col--id">Client ID</span>
                 <span class="sig-table__col sig-table__col--pan">PAN</span>
+                <span class="sig-table__col sig-table__col--din">DIN</span>
                 <span class="sig-table__col sig-table__col--status">Status</span>
                 <span class="sig-table__col sig-table__col--actions">Actions</span>
               </div>
@@ -645,6 +646,17 @@
                     {{ sig.panNumber || '-' }}
                     @if (sig.panVerified) { <mat-icon class="verify-tick-sm">check_circle</mat-icon> }
                   </span>
+                  <span class="sig-table__col sig-table__col--din">
+                    @if (sig.dinNumber) {
+                      {{ sig.dinNumber }}
+                      @if (sig.dinVerified) { <mat-icon class="verify-tick-sm">check_circle</mat-icon> }
+                      @if (!sig.dinVerified) { <mat-icon class="verify-cross-sm">cancel</mat-icon> }
+                    } @else {
+                      <button mat-stroked-button class="din-verify-btn" type="button" matTooltip="Verify DIN" (click)="openDinVerifyDialog(sig)">
+                        <mat-icon class="din-verify-icon">badge</mat-icon> Verify DIN
+                      </button>
+                    }
+                  </span>
                   <span class="sig-table__col sig-table__col--status">
                     <span class="sig-status-chip" [class.active]="sig.status?.value === 'Active'">{{ sig.status?.value || '-' }}</span>
                   </span>