fix: tenant-config fixes, cashier/share/savings UI bugs, and menu-access hardcoding

- Add Balance Sheet report and disabled-features accounting config
- Point menu-access tenant header and env.js/environment.ts tenant identifier
  at env config instead of hardcoded 'default'/'lincpay' literals
- Surface the real backend error (not a generic "no reference id") when an
  OTP send fails in contact-otp-block
- Fix branch-day "₹null" display bug (null vs undefined) and add a guard
  blocking a branch's first-ever day open before cash denomination migration
- Dynamically size the denomination count input and block re-opening an
  already-open business day from Migrate Cash Denomination
- Lock the denomination-managed cash GL row in Migrate Opening Balances
  (read-only, with a link back to Migrate Cash Denomination)
- Remove duplicate Cancel/Submit action bars on the Share Product and
  Savings Account creation preview steps; align Previous into the same row
- Hide "Apply Collection" on a share account once its advance collection
  is already settled (further purchases go through Apply Additional Shares)

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

src/app/accounting/migrate-opening-balances/migrate-opening-balances.component.html

@@ -162,7 +162,18 @@
             <div class="mob-grid mob-grid--data" formArrayName="glAccountEntries">
               <div class="mob-grid__row" [formGroupName]="i">
                 <div class="mob-grid__code">{{ openingBalancesData.glAccounts[i].glAccountCode }}</div>
-                <div class="mob-grid__name">{{ openingBalancesData.glAccounts[i].glAccountName }}</div>
+                <div class="mob-grid__name">
+                  {{ openingBalancesData.glAccounts[i].glAccountName }}
+                  @if (isDenominationManaged(openingBalancesData.glAccounts[i].glAccountId)) {
+                    <span
+                      class="mob-grid__lock"
+                      matTooltip="Set by Migrate Cash Denomination — use that screen to change it"
+                    >
+                      <mat-icon inline="true">lock</mat-icon>
+                      <a [routerLink]="['/accounting/migrate-cash-denomination']">Migrate Cash Denomination</a>
+                    </span>
+                  }
+                </div>
                 <div class="mob-grid__amt">
                   <mat-form-field class="mob-grid__input">
                     <input matInput type="number" min="0" formControlName="debit" placeholder="0.00" />