Refactor permission handling and authentication services

Replaced `PermissionClaim` enum with an OpenAPI-defined schema `PermissionClaimDto` for consistency across frontend and backend. Refactored authentication flow to utilize `AuthService` on the frontend, consolidating JWT handling logic. Removed redundant methods like `saveJwt` and integrated robust permission management throughout the application.

frontend/src/app/login/login.component.ts

@@ -5,9 +5,8 @@ import {MatButtonModule} from '@angular/material/button';
 import {MatInputModule} from '@angular/material/input';
 import {MatFormFieldModule} from '@angular/material/form-field';
 import {NgIf} from '@angular/common';
-import {LoginService} from '../../api';
 import {MatSnackBar} from '@angular/material/snack-bar';
-import {CookieService} from 'ngx-cookie-service';
+import {AuthService} from '../services/auth.service';
 
 @Component({
   selector: 'app-login',
@@ -31,9 +30,8 @@ export class LoginDialogComponent {
   constructor(
     public dialogRef: MatDialogRef<LoginDialogComponent>,
     private fb: FormBuilder,
-    private loginService: LoginService,
-    private snackBar: MatSnackBar,
-    private cookieService: CookieService
+    private authService: AuthService,
+    private snackBar: MatSnackBar
   ) {
     this.loginForm = this.fb.group({
       code: ['', [
@@ -55,9 +53,8 @@ export class LoginDialogComponent {
       return;
     }
     this.snackBar.open('Logging in...', '', {duration: 2000});
-    this.loginService.login(this.loginForm.value.code).subscribe({
+    this.authService.login(this.loginForm.value.code).subscribe({
       next: (jwt) => {
-        this.saveJwt(jwt as JsonWebKey);
         this.dialogRef.close(jwt);
       },
       error: () => {
@@ -68,14 +65,6 @@ export class LoginDialogComponent {
     });
   }
 
-  private saveJwt(jwt: JsonWebKey) {
-    this.cookieService.set('jwt', jwt.toString(), {
-      path: '/',
-      secure: true,
-      sameSite: 'Strict'
-    });
-  }
-
   public formHasError() {
     return this.loginForm.get('code')?.hasError('required');
   }