Refactor frontend to Composition API and improve UI/UX

Major Changes:
- Migrate components from Options API to Composition API with <script setup>
- Add centralized service layer (serviceService, deliveryService, adminService)
- Implement new reusable components (EnhancedButton, EnhancedModal, StatCard, etc.)
- Add theme store for consistent theming across application
- Improve ServiceCalendar with federal holidays and better styling
- Refactor customer profile and tank estimation components
- Update all delivery and payment pages to use centralized services
- Add utility functions for formatting and validation
- Update Dockerfiles for better environment configuration
- Enhance Tailwind config with custom design tokens

UI Improvements:
- Modern, premium design with glassmorphism effects
- Improved form layouts with FloatingInput components
- Better loading states and empty states
- Enhanced modals and tables with consistent styling
- Responsive design improvements across all pages

Technical Improvements:
- Strict TypeScript types throughout
- Better error handling and validation
- Removed deprecated api.js in favor of TypeScript services
- Improved code organization and maintainability

src/pages/admin/promo/edit.vue

@@ -67,7 +67,7 @@
         </div>
       </div>
 
-    <Footer/>
+    
   </template>
 
 
@@ -77,7 +77,6 @@
   import authHeader from '../../../services/auth.header'
   import Header from '../../../layouts/headers/headerauth.vue'
   import SideBar from '../../../layouts/sidebar/sidebar.vue'
-  import Footer from '../../../layouts/footers/footer.vue'
   import useValidate from "@vuelidate/core";
   import {notify} from "@kyvg/vue3-notification";
 
@@ -87,7 +86,6 @@
     components: {
       Header,
       SideBar,
-      Footer,
     },
 
     data() {