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/angular.json

@@ -7,7 +7,7 @@
       "projectType": "application",
       "schematics": {
         "@schematics/angular:component": {
-          "style": "scss"
+          "style": "sass"
         },
         "@schematics/angular:application": {
           "strict": true
@@ -23,12 +23,16 @@
             "outputPath": {
               "base": "../frontend"
             },
-            "index": "src/index.html",
+            "browser": "src/main.ts",
             "tsConfig": "tsconfig.app.json",
-            "assets": ["src/favicon.ico", "src/assets"],
-            "styles": ["src/styles.scss"],
-            "scripts": [],
-            "browser": "src/main.ts"
+            "inlineStyleLanguage": "sass",
+            "assets": [
+              {
+                "glob": "**/*",
+                "input": "public"
+              }
+            ],
+            "styles": ["src/styles.sass"]
           },
           "configurations": {
             "production": {
@@ -49,8 +53,7 @@
             "development": {
               "optimization": false,
               "extractLicenses": false,
-              "sourceMap": true,
-              "namedChunks": true
+              "sourceMap": true
             }
           },
           "defaultConfiguration": "production"
@@ -70,21 +73,8 @@
           },
           "defaultConfiguration": "development"
         },
-        "extract-i18n": {
-          "builder": "@angular/build:extract-i18n",
-          "options": {
-            "buildTarget": "overlord:build"
-          }
-        },
         "test": {
-          "builder": "@angular/build:karma",
-          "options": {
-            "tsConfig": "tsconfig.spec.json",
-            "inlineStyleLanguage": "scss",
-            "assets": ["src/favicon.ico", "src/assets"],
-            "styles": ["src/styles.scss"],
-            "scripts": []
-          }
+          "builder": "@angular/build:unit-test"
         },
         "lint": {
           "builder": "@angular-eslint/builder:lint",