Markenwissen-Wissensbasis: Konsistenz-Korrekturen + Copyright-Hygiene

Konsolidierter, bereinigter Stand der Wissensbasis (docs/). Frischer
Wurzel-Commit, um urheberrechtlich problematische Volltexte aus der
Historie zu entfernen (die bisherige Historie bestand aus einem einzigen
Initial-Commit).

Enthaltene Änderungen (vgl. docs/_Steuerung/CHANGELOG.md, 2026-05-29):
- Copyright-Hygiene: 25 Volltext-/Übersetzungsdateien (Sharp 14 Kap.,
  Wala 11 Kap.) entfernt; je Quelle _Fundstellen-Index.md als
  Provenienzbeleg; Quellnachweise + Steuerungsdateien angepasst.
- Konsistenz-Korrekturen: Reichweite 000-013 (Scorecard-Regeln),
  Rule-ID MW-WK-DIFF-101, Quellnachweis-Dateiverweis, Dok.000 v2.0.2.
- Dateinamen-Normalisierung: Startdatei ohne Leerzeichen.

Originale (Wala/Sharp E-Books) privat außerhalb des Repos archiviert.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/Feature/Auth/AuthenticationTest.php

@@ -0,0 +1,67 @@
+<?php
+
+use App\Models\User;
+use Laravel\Fortify\Features;
+
+test('login screen can be rendered', function () {
+    $response = $this->get(route('login'));
+
+    $response->assertOk();
+});
+
+test('users can authenticate using the login screen', function () {
+    $user = User::factory()->create();
+
+    $response = $this->post(route('login.store'), [
+        'email' => $user->email,
+        'password' => 'password',
+    ]);
+
+    $response
+        ->assertSessionHasNoErrors()
+        ->assertRedirect(route('dashboard', absolute: false));
+
+    $this->assertAuthenticated();
+});
+
+test('users can not authenticate with invalid password', function () {
+    $user = User::factory()->create();
+
+    $response = $this->post(route('login.store'), [
+        'email' => $user->email,
+        'password' => 'wrong-password',
+    ]);
+
+    $response->assertSessionHasErrorsIn('email');
+
+    $this->assertGuest();
+});
+
+test('users with two factor enabled are redirected to two factor challenge', function () {
+    $this->skipUnlessFortifyHas(Features::twoFactorAuthentication());
+
+    Features::twoFactorAuthentication([
+        'confirm' => true,
+        'confirmPassword' => true,
+    ]);
+
+    $user = User::factory()->withTwoFactor()->create();
+
+    $response = $this->post(route('login.store'), [
+        'email' => $user->email,
+        'password' => 'password',
+    ]);
+
+    $response->assertRedirect(route('two-factor.login'));
+    $this->assertGuest();
+});
+
+test('users can logout', function () {
+    $user = User::factory()->create();
+
+    $response = $this->actingAs($user)->post(route('logout'));
+
+    $response->assertRedirect(route('home'));
+
+    $this->assertGuest();
+});