Initialize clean CSR inventory repository

inventory/templates/registration/login.html

@@ -0,0 +1,5 @@
+{% load static %}
+<!doctype html><html lang="de"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>Anmelden · CS-R</title><link rel="icon" type="image/png" href="{% static 'inventory/img/csr-logo.png' %}"><script src="{% static 'inventory/js/theme.js' %}?v=20260928-3"></script><link rel="stylesheet" href="{% static 'inventory/css/app.css' %}?v=20260928-3"></head>
+<body class="login-page"><main class="login-card"><img src="{% static 'inventory/img/csr-logo.png' %}" alt="CS-R"><h1>Geräteverwaltung</h1><p>Melden Sie sich mit Ihrem internen Konto an.</p>
+{% if form.errors %}<div class="form-error">Benutzername oder Passwort ist nicht korrekt.</div>{% endif %}
+<form method="post">{% csrf_token %}<label>Benutzername{{ form.username }}</label><label>Passwort{{ form.password }}</label><input type="hidden" name="next" value="{{ next }}"><button class="btn primary full">Anmelden</button></form><button class="theme-toggle login-theme" type="button" data-theme-toggle aria-pressed="false"><span data-theme-icon aria-hidden="true">☾</span><span data-theme-label>Dunkelmodus</span></button></main></body></html>