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-kyc-step/client-kyc-step.component.html

@@ -723,6 +723,53 @@
         <span>PAN verification requires client to be created first. Complete General tab and click Next to save.</span>
       </div>
     }
+
+    <!-- KYC Exception Flag -->
+    <div
+      class="exception-flag-box"
+      style="
+        margin-top: 20px;
+        padding: 16px;
+        border: 1px solid #f59e0b;
+        background: #fffbeb;
+        border-radius: 8px;
+        clear: both;
+      "
+    >
+      <h5
+        style="
+          margin: 0 0 12px 0;
+          font-size: 14px;
+          font-weight: 600;
+          color: #b45309;
+          display: flex;
+          align-items: center;
+          gap: 8px;
+        "
+      >
+        <fa-icon icon="exclamation-triangle"></fa-icon>
+        KYC Exception Flag
+      </h5>
+      <div style="display: flex; align-items: center; gap: 20px; flex-wrap: wrap">
+        <mat-checkbox formControlName="isException">Mark as KYC Exception</mat-checkbox>
+
+        @if (kycForm.get('isException')?.value) {
+          <mat-form-field appearance="outline" style="flex: 1; min-width: 280px; margin-bottom: -1.25em">
+            <mat-label>Exception Reasons</mat-label>
+            <mat-select formControlName="exceptionReason" multiple>
+              @if (!isNonIndividual) {
+                <mat-option value="PAN Card Verification Failed">PAN Card Verification Failed</mat-option>
+                <mat-option value="Aadhaar Verification Failed">Aadhaar Verification Failed</mat-option>
+              } @else {
+                <mat-option value="Enterprise PAN Verification Failed">Enterprise PAN Verification Failed</mat-option>
+                <mat-option value="GSTIN Verification Failed">GSTIN Verification Failed</mat-option>
+                <mat-option value="CIN Verification Failed">CIN Verification Failed</mat-option>
+              }
+            </mat-select>
+          </mat-form-field>
+        }
+      </div>
+    </div>
   </div>
 
   <!-- ═══ SECTION: KYC Document Management ═══ -->