Moved to uv from poetry

Updated ruff and mypy, accepted all changes
Central exception management and injected the Session.
This removed a lot of duplicated boilerplate code.
Added health check
Updated to Angular 21

overlord/src/app/app.component.ts

@@ -1,14 +1,13 @@
 import { Component } from '@angular/core';
 import { RouterOutlet } from '@angular/router';
-import { LoadingBarModule } from '@ngx-loading-bar/core';
 
 import { NavBarComponent } from './core/nav-bar/nav-bar.component';
 
 @Component({
   selector: 'app-root',
   templateUrl: './app.component.html',
-  styleUrls: ['./app.component.scss'],
-  imports: [LoadingBarModule, NavBarComponent, RouterOutlet],
+  styleUrls: ['./app.component.sass'],
+  imports: [NavBarComponent, RouterOutlet],
 })
 export class AppComponent {
   title = 'app';