feat: Update API endpoint usage in repositories to remove redundant path property

- Refactored multiple repository implementations across client and staff features to directly use endpoint objects without accessing the `path` property.
- Introduced a new `FeatureGate` class for client-side feature gating based on user scopes, allowing for better access control to API endpoints.
- Added `ApiEndpoint` class to represent API endpoints with their paths and required scopes for future feature gating.

apps/mobile/packages/features/staff/profile_sections/compliance/certificates/lib/src/data/repositories_impl/certificates_repository_impl.dart

@@ -27,7 +27,7 @@ class CertificatesRepositoryImpl implements CertificatesRepository {
   @override
   Future<List<StaffCertificate>> getCertificates() async {
     final ApiResponse response =
-        await _api.get(StaffEndpoints.certificates.path);
+        await _api.get(StaffEndpoints.certificates);
     final List<dynamic> items =
         response.data['certificates'] as List<dynamic>;
     return items
@@ -73,7 +73,7 @@ class CertificatesRepositoryImpl implements CertificatesRepository {
 
     // 4. Save certificate via V2 API
     await _api.post(
-      StaffEndpoints.certificates.path,
+      StaffEndpoints.certificates,
       data: <String, dynamic>{
         'certificateType': certificateType,
         'name': name,
@@ -95,7 +95,7 @@ class CertificatesRepositoryImpl implements CertificatesRepository {
   @override
   Future<void> deleteCertificate({required String certificateId}) async {
     await _api.delete(
-      StaffEndpoints.certificateDelete(certificateId).path,
+      StaffEndpoints.certificateDelete(certificateId),
     );
   }
 }

apps/mobile/packages/features/staff/profile_sections/compliance/documents/lib/src/data/repositories_impl/documents_repository_impl.dart

@@ -27,7 +27,7 @@ class DocumentsRepositoryImpl implements DocumentsRepository {
   @override
   Future<List<ProfileDocument>> getDocuments() async {
     final ApiResponse response =
-        await _api.get(StaffEndpoints.documents.path);
+        await _api.get(StaffEndpoints.documents);
     final List<dynamic> items = response.data['documents'] as List<dynamic>;
     return items
         .map((dynamic json) =>
@@ -64,7 +64,7 @@ class DocumentsRepositoryImpl implements DocumentsRepository {
 
     // 4. Submit upload result to V2 API
     await _api.put(
-      StaffEndpoints.documentUpload(documentId).path,
+      StaffEndpoints.documentUpload(documentId),
       data: <String, dynamic>{
         'fileUri': signedUrlRes.signedUrl,
         'verificationId': verificationRes.verificationId,

apps/mobile/packages/features/staff/profile_sections/compliance/tax_forms/lib/src/data/repositories/tax_forms_repository_impl.dart

@@ -18,7 +18,7 @@ class TaxFormsRepositoryImpl implements TaxFormsRepository {
   @override
   Future<List<TaxForm>> getTaxForms() async {
     final ApiResponse response =
-        await _api.get(StaffEndpoints.taxForms.path);
+        await _api.get(StaffEndpoints.taxForms);
     final List<dynamic> items = response.data['taxForms'] as List<dynamic>;
     return items
         .map((dynamic json) =>
@@ -29,7 +29,7 @@ class TaxFormsRepositoryImpl implements TaxFormsRepository {
   @override
   Future<void> updateTaxForm(TaxForm form) async {
     await _api.put(
-      StaffEndpoints.taxFormUpdate(form.formType).path,
+      StaffEndpoints.taxFormUpdate(form.formType),
       data: form.toJson(),
     );
   }
@@ -37,7 +37,7 @@ class TaxFormsRepositoryImpl implements TaxFormsRepository {
   @override
   Future<void> submitTaxForm(TaxForm form) async {
     await _api.post(
-      StaffEndpoints.taxFormSubmit(form.formType).path,
+      StaffEndpoints.taxFormSubmit(form.formType),
       data: form.toJson(),
     );
   }