fix(shares): mandatory GL+voucher entry for advance collection, split entry-fee verification from settlement

- Apply Collection dialog: replace product-config auto-resolved GL account with a required GL +
  voucher search (mirrored for Share and Entry Fee receipts). The entry-fee receipt is tracked
  separately from the share receipts and sent as its own field so its amount is never swept into the
  Sundry-side total or double-posted — it only verifies the fee was paid, since that money already
  sits wherever the cashier deposited it.
- Shows the account's required total (share value + entry fee) and live coverage up front, instead of
  only after a failed apply.
- Apply Additional Shares: same mandatory GL + voucher pattern for its by-voucher lookup, plus a GL
  account picker fed by the new /shareadvancecollection/glaccounts endpoint.
- shares-account-charges-step: fixed a race where the currency-control subscription (meant only for
  the edit-an-existing-application flow) wiped out product charges that ngOnChanges had just seeded
  from the same product-selection event, leaving new accounts with no charges.
- shares-account-view: hide "Share Certificate" until collection_applied is true, so a certificate
  can't be printed for shares nobody has actually paid for yet.

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

src/app/shares/shares-account-actions/apply-shares/apply-shares.component.html

@@ -109,6 +109,22 @@
                 Share Sundry against them, and approving this request moves it into share capital.
               </p>
 
+              <div class="gl-select-field">
+                <select
+                  class="gl-select"
+                  [(ngModel)]="glAccountNo"
+                  [ngModelOptions]="{ standalone: true }"
+                  [disabled]="lookingUpVoucher || submitting || loadingGlAccounts"
+                >
+                  <option value="" disabled>
+                    {{ loadingGlAccounts ? 'Loading GL accounts…' : 'Select GL account…' }}
+                  </option>
+                  @for (gl of glAccounts; track gl.id) {
+                    <option [value]="gl.gl_code">{{ gl.gl_code }} — {{ gl.name }}</option>
+                  }
+                </select>
+              </div>
+
               <div class="voucher-lookup">
                 <input
                   #voucherInput
@@ -121,7 +137,7 @@
                 <button
                   mat-stroked-button
                   type="button"
-                  [disabled]="!voucherInput.value.trim() || lookingUpVoucher || submitting"
+                  [disabled]="!voucherInput.value.trim() || !glAccountNo.trim() || lookingUpVoucher || submitting"
                   (click)="lookupVoucher(voucherInput.value)"
                 >
                   {{ lookingUpVoucher ? 'Finding…' : 'Find' }}