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/accounting-routing.module.ts

@@ -72,6 +72,7 @@ import { ViewJournalEntryTransactionComponent } from 'app/shared/accounting/view
 import { JournalEntryTransactionResolver } from './common-resolvers/journal-entry-transaction.resolver';
 import { ExternalAssetOwnerJournalEntryResolver } from 'app/loans/common-resolvers/external-asset-owner-journal-entry.resolver';
 import { ExternalAssetConfigurationResolver } from './common-resolvers/external-asset-configuration.resolver';
+import { accountingFeatureEnabledGuard } from './disabled-features';
 
 /** Accounting Routes */
 const routes: Routes = [
@@ -99,7 +100,8 @@ const routes: Routes = [
             {
               path: 'frequent-postings',
               component: FrequentPostingsComponent,
-              data: { title: 'Frequent Postings', breadcrumb: 'Frequent Postings' },
+              canActivate: [accountingFeatureEnabledGuard],
+              data: { title: 'Frequent Postings', breadcrumb: 'Frequent Postings', feature: 'frequentPostings' },
               resolve: {
                 offices: OfficesResolver,
                 accountingRules: AccountingRulesAssociationsResolver,
@@ -110,7 +112,8 @@ const routes: Routes = [
             {
               path: 'create',
               component: CreateJournalEntryComponent,
-              data: { title: 'Create Journal Entry', breadcrumb: 'Create' },
+              canActivate: [accountingFeatureEnabledGuard],
+              data: { title: 'Create Journal Entry', breadcrumb: 'Create', feature: 'createJournalEntries' },
               resolve: {
                 offices: OfficesResolver,
                 currencies: CurrenciesResolver,
@@ -194,6 +197,11 @@ const routes: Routes = [
             offices: OfficesResolver
           }
         },
+        {
+          path: 'balance-sheet',
+          loadComponent: () => import('./balance-sheet/balance-sheet.component').then((c) => c.BalanceSheetComponent),
+          data: { title: 'Balance Sheet', breadcrumb: 'Balance Sheet' }
+        },
         {
           path: 'chart-of-accounts',
           data: { title: 'Chart of Accounts', breadcrumb: 'Chart of Accounts' },
@@ -244,7 +252,8 @@ const routes: Routes = [
         },
         {
           path: 'closing-entries',
-          data: { title: 'Accounting Closures', breadcrumb: 'Closing Entries' },
+          canActivate: [accountingFeatureEnabledGuard],
+          data: { title: 'Accounting Closures', breadcrumb: 'Closing Entries', feature: 'closingEntries' },
           children: [
             {
               path: '',
@@ -285,7 +294,8 @@ const routes: Routes = [
         },
         {
           path: 'accounting-rules',
-          data: { title: 'Accounting Rules', breadcrumb: 'Accounting Rules' },
+          canActivate: [accountingFeatureEnabledGuard],
+          data: { title: 'Accounting Rules', breadcrumb: 'Accounting Rules', feature: 'accountingRules' },
           children: [
             {
               path: '',
@@ -332,11 +342,17 @@ const routes: Routes = [
         {
           path: 'periodic-accruals',
           component: PeriodicAccrualsComponent,
-          data: { title: 'Periodic Accrual Accounting', breadcrumb: 'Execute Periodic Accrual Accounting' }
+          canActivate: [accountingFeatureEnabledGuard],
+          data: {
+            title: 'Periodic Accrual Accounting',
+            breadcrumb: 'Execute Periodic Accrual Accounting',
+            feature: 'accruals'
+          }
         },
         {
           path: 'provisioning-entries',
-          data: { title: 'Provisioning Entries', breadcrumb: 'Provisioning Entries' },
+          canActivate: [accountingFeatureEnabledGuard],
+          data: { title: 'Provisioning Entries', breadcrumb: 'Provisioning Entries', feature: 'provisioningEntries' },
           children: [
             {
               path: '',