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/search-journal-entry/search-journal-entry.component.ts

@@ -14,6 +14,7 @@ import { ActivatedRoute, RouterLink } from '@angular/router';
 import { merge } from 'rxjs';
 import { tap, startWith, map, distinctUntilChanged, debounceTime } from 'rxjs/operators';
 import { AccountingService } from '../accounting.service';
+import { DISABLED_ACCOUNTING_FEATURES } from '../disabled-features';
 import { SettingsService } from 'app/settings/settings.service';
 import { JournalEntriesDataSource } from './journal-entry.datasource';
 import { Dates } from 'app/core/utils/dates';
@@ -90,6 +91,8 @@ export class SearchJournalEntryComponent implements OnInit, OnDestroy, AfterView
   // ── Misc ──────────────────────────────────────────────────────────────────
   minDate = new Date(2000, 0, 1);
   maxDate = new Date();
+  /** Accounting features switched off for this installation — see disabled-features.ts. */
+  disabledFeatures = DISABLED_ACCOUNTING_FEATURES;
 
   // ── Filter controls ───────────────────────────────────────────────────────
   officeName = new UntypedFormControl();