feat: Refactor context reading in emergency contact and FAQs widgets

- Updated the context reading method in `EmergencyContactAddButton` and `EmergencyContactFormItem` to use `ReadContext`.
- Modified the `FaqsWidget` to utilize `ReadContext` for fetching FAQs.
- Adjusted the `PrivacySectionWidget` to read from `PrivacySecurityBloc` using `ReadContext`.

feat: Implement Firebase Auth isolation pattern

- Introduced `FirebaseAuthService` and `FirebaseAuthServiceImpl` to abstract Firebase Auth operations.
- Ensured features do not directly import `firebase_auth`, adhering to architecture rules.

feat: Create repository interfaces for billing and coverage

- Added `BillingRepositoryInterface` for billing-related operations.
- Created `CoverageRepositoryInterface` for coverage data access.

feat: Add use cases for order management

- Implemented use cases for fetching hubs, managers, and roles related to orders.
- Created `GetHubsUseCase`, `GetManagersByHubUseCase`, and `GetRolesByVendorUseCase`.

feat: Develop report use cases for client reports

- Added use cases for fetching various reports including coverage, daily operations, forecast, no-show, performance, and spend reports.
- Implemented `GetCoverageReportUseCase`, `GetDailyOpsReportUseCase`, `GetForecastReportUseCase`, `GetNoShowReportUseCase`, `GetPerformanceReportUseCase`, and `GetSpendReportUseCase`.

feat: Establish profile repository and use cases

- Created `ProfileRepositoryInterface` for staff profile data access.
- Implemented use cases for retrieving staff profile and section statuses: `GetStaffProfileUseCase` and `GetProfileSectionsUseCase`.
- Added `SignOutUseCase` for signing out the current user.

apps/mobile/packages/features/staff/availability/lib/src/presentation/pages/availability_page.dart

@@ -201,7 +201,7 @@ class _AvailabilityPageState extends State<AvailabilityPage> {
       height: 32,
       child: OutlinedButton(
         onPressed: () =>
-            context.read<AvailabilityBloc>().add(PerformQuickSet(type)),
+            ReadContext(context).read<AvailabilityBloc>().add(PerformQuickSet(type)),
         style: OutlinedButton.styleFrom(
           padding: EdgeInsets.zero,
           side: BorderSide(
@@ -252,14 +252,14 @@ class _AvailabilityPageState extends State<AvailabilityPage> {
               children: <Widget>[
                 _buildNavButton(
                   UiIcons.chevronLeft,
-                  () => context.read<AvailabilityBloc>().add(
+                  () => ReadContext(context).read<AvailabilityBloc>().add(
                         const NavigateWeek(-1),
                       ),
                 ),
                 Text(monthYear, style: UiTypography.title2b),
                 _buildNavButton(
                   UiIcons.chevronRight,
-                  () => context.read<AvailabilityBloc>().add(
+                  () => ReadContext(context).read<AvailabilityBloc>().add(
                         const NavigateWeek(1),
                       ),
                 ),
@@ -307,7 +307,7 @@ class _AvailabilityPageState extends State<AvailabilityPage> {
     return Expanded(
       child: GestureDetector(
         onTap: () =>
-            context.read<AvailabilityBloc>().add(SelectDate(dayDate)),
+            ReadContext(context).read<AvailabilityBloc>().add(SelectDate(dayDate)),
         child: Container(
           margin: const EdgeInsets.symmetric(horizontal: 2),
           padding: const EdgeInsets.symmetric(vertical: UiConstants.space3),