build(app): update to Angular 21

.editorconfig

@@ -10,6 +10,7 @@ trim_trailing_whitespace = true
 
 [*.ts]
 quote_type = single
+ij_typescript_use_double_quotes = false
 
 [*.md]
 max_line_length = off

.gitignore

@@ -1,4 +1,4 @@
-# See http://help.github.com/ignore-files/ for more about ignoring files.
+# See https://docs.github.com/get-started/getting-started-with-git/ignoring-files for more about ignoring files.
 
 # Compiled output
 /dist
@@ -26,6 +26,7 @@ yarn-error.log
 !.vscode/tasks.json
 !.vscode/launch.json
 !.vscode/extensions.json
+!.vscode/mcp.json
 .history/*
 
 # Miscellaneous
@@ -36,6 +37,7 @@ yarn-error.log
 /libpeerconnection.log
 testem.log
 /typings
+__screenshots__/
 
 # System files
 .DS_Store

.postcssrc.json

@@ -0,0 +1,5 @@
+{
+  "plugins": {
+    "@tailwindcss/postcss": {}
+  }
+}

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2021 Nikos Anifantis
+Copyright (c) 2026 Nikos Anifantis
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

angular.json

@@ -1,6 +1,9 @@
 {
   "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
   "version": 1,
+  "cli": {
+    "packageManager": "npm"
+  },
   "newProjectRoot": "projects",
   "projects": {
     "angular-authentication": {
@@ -17,10 +20,7 @@
         "build": {
           "builder": "@angular/build:application",
           "options": {
-            "outputPath": "dist/angular-authentication",
-            "index": "src/index.html",
             "browser": "src/main.ts",
-            "polyfills": [],
             "tsConfig": "tsconfig.app.json",
             "inlineStyleLanguage": "scss",
             "assets": [
@@ -42,8 +42,8 @@
                 },
                 {
                   "type": "anyComponentStyle",
-                  "maximumWarning": "2kB",
-                  "maximumError": "4kB"
+                  "maximumWarning": "4kB",
+                  "maximumError": "8kB"
                 }
               ],
               "outputHashing": "all"
@@ -74,9 +74,6 @@
           },
           "defaultConfiguration": "development"
         },
-        "extract-i18n": {
-          "builder": "@angular/build:extract-i18n"
-        },
         "lint": {
           "builder": "@angular-eslint/builder:lint",
           "options": {

eslint.config.js → eslint.config.mjs

@@ -1,10 +1,12 @@
 // @ts-check
-const eslint = require('@eslint/js');
-const tseslint = require('typescript-eslint');
-const angular = require('angular-eslint');
-const importPlugin = require('eslint-plugin-import');
 
-module.exports = tseslint.config(
+import eslint from '@eslint/js';
+import { defineConfig } from 'eslint/config';
+import tseslint from 'typescript-eslint';
+import angular from 'angular-eslint';
+import importPlugin from 'eslint-plugin-import';
+
+export default defineConfig(
   {
     files: ['**/*.ts'],
     extends: [