feat: enhance child edit and view components with improved form handling and validation

- Added `requireDirty` prop to `EntityEditForm` for dirty state management.
- Updated `ChildEditView` to handle initial data loading and image selection more robustly.
- Refactored `ChildView` to remove unused reward dialog logic and prevent API calls in child mode.
- Improved type definitions for form fields and initial data in `ChildEditView`.
- Enhanced error handling in form submissions across components.
- Implemented cross-tab logout synchronization on password reset in the auth store.
- Added tests for login and entity edit form functionalities to ensure proper behavior.
- Introduced global fetch interceptor for handling unauthorized responses.
- Documented password reset flow and its implications on session management.

frontend/vue-app/src/main.ts

@@ -2,9 +2,14 @@ import '@/assets/colors.css'
 import { createApp } from 'vue'
 import App from './App.vue'
 import router from './router'
+import { initAuthSync } from './stores/auth'
+import { installUnauthorizedFetchInterceptor } from './common/api'
 
 const app = createApp(App)
 
+initAuthSync()
+installUnauthorizedFetchInterceptor()
+
 app.use(router)
 
 app.mount('#app')