feat(clerk): add collection flow — multi-DR savings to CR GL with maker-checker

- Transaction entry: detect collection mode (N DR savings → 1 CR GL) and disbursement mode (1 DR GL → N CR savings); build dbCr-tagged payload for backend
- Disbursement review: show 'GL Credit (Target)' / 'Debit Entries' labels for collection; fix double-count by summing only DR entries for collection totals; dynamic approve button text
- My disbursement requests: add DR/CR badge column in expanded credit-entries preview
- My requests / withdrawal-requests: minor consistency updates

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

src/app/clerk/my-disbursement-requests/my-disbursement-requests.component.html

@@ -127,7 +127,12 @@
               </td>
               <td class="num mdr-amount">₹{{ r.dr_amount | number: '1.2-2' }}</td>
               <td>
-                <span class="mdr-credit-badge">{{ creditCount(r) }} account{{ creditCount(r) !== 1 ? 's' : '' }}</span>
+                <button type="button" class="mdr-credit-badge mdr-credit-badge--btn" (click)="toggleExpand(r.id)">
+                  {{ creditCount(r) }} account{{ creditCount(r) !== 1 ? 's' : '' }}
+                  <mat-icon class="mdr-credit-chevron" [class.mdr-credit-chevron--open]="expandedIds.has(r.id)">
+                    expand_more
+                  </mat-icon>
+                </button>
               </td>
               <td>{{ r.payment_type_name || 'Transfer' }}</td>
               <td>{{ r.manager_name || r.manager_username || '—' }}</td>
@@ -136,6 +141,46 @@
                 <span class="mdr-status" [ngClass]="statusClass(r.status)">{{ statusLabel(r.status) }}</span>
               </td>
             </tr>
+            @if (expandedIds.has(r.id)) {
+              <tr class="mdr-expand-row">
+                <td colspan="8" class="mdr-expand-cell">
+                  <div class="mdr-credit-preview">
+                    <table class="mdr-credit-table">
+                      <thead>
+                        <tr>
+                          <th>DR/CR</th>
+                          <th>Account No</th>
+                          <th>Account Name</th>
+                          <th>Type</th>
+                          <th class="num">Amount (₹)</th>
+                        </tr>
+                      </thead>
+                      <tbody>
+                        @for (ce of getCreditEntries(r); track ce.accountNo) {
+                          <tr>
+                            <td>
+                              <span
+                                class="mdr-actype"
+                                [style.background]="ce.dbCr === 'Dr' ? '#fee2e2' : '#dcfce7'"
+                                [style.color]="ce.dbCr === 'Dr' ? '#991b1b' : '#166534'"
+                              >
+                                {{ ce.dbCr || 'CR' }}
+                              </span>
+                            </td>
+                            <td class="cell-mono">{{ ce.accountNo || '—' }}</td>
+                            <td>{{ ce.accountName || '—' }}</td>
+                            <td>
+                              <span class="mdr-actype">{{ ce.accountType || '—' }}</span>
+                            </td>
+                            <td class="num mdr-ce-amount">{{ ce.amount | number: '1.2-2' }}</td>
+                          </tr>
+                        }
+                      </tbody>
+                    </table>
+                  </div>
+                </td>
+              </tr>
+            }
             @if (r.status === 'REJECTED' && r.rejection_reason) {
               <tr class="mdr-reason-row">
                 <td colspan="8" class="mdr-reason-cell">