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/styles.sass

@@ -0,0 +1,43 @@
+@use '@angular/material' as mat
+
+@use 'layout'
+
+@include mat.core()
+
+:root
+  // color-scheme: light dark
+  @include mat.theme((
+      color: (
+        primary: mat.$azure-palette,
+        tertiary: mat.$blue-palette,
+        // theme-type: light,
+      ),
+      typography: (
+        plain-family: Montserrat,
+        brand-family: Montserrat,
+      ),
+      density: 0,
+    ))
+  font-family: 'Helvetica Neue', Montserrat, sans-serif
+
+
+html,
+body 
+  height: 100%
+  overscroll-behavior-y: contain
+
+
+a 
+  color: rgb(0, 0, 238)
+  text-decoration: underline
+
+
+button.mat-primary 
+  background: var(--mat-sys-primary) !important
+  color: var(--mat-sys-on-primary) !important
+
+
+button.mat-warn 
+  background: var(--mat-sys-error) !important
+  color: var(--mat-sys-on-error) !important
+