Initial implementation: Logbuch Sternwarte Welzheim

Vollständige Next.js 16 Webanwendung als Logbuch für die Sternwarte Welzheim.
4 Kuppeln (West/Ost/Süd/Pluto), BEO-basierte Authentifizierung mit erzwungenem
Passwort-Wechsel beim Erstlogin, MySQL-Backend, Docker-Deployment.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/login/page.tsx

@@ -0,0 +1,110 @@
+'use client';
+
+import { useActionState, useState } from 'react';
+import { login } from './actions';
+import packageJson from '@/package.json';
+
+export default function LoginPage() {
+  const [state, loginAction, isPending] = useActionState(login, undefined);
+  const [showPassword, setShowPassword] = useState(false);
+
+  const version = packageJson.version;
+  const buildDate =
+    process.env.NEXT_PUBLIC_BUILD_DATE ||
+    new Date().toLocaleDateString('de-DE', { day: '2-digit', month: '2-digit', year: 'numeric' });
+
+  return (
+    <div className="min-h-screen bg-white py-4 px-4">
+      <main className="max-w-6xl mx-auto border-2 border-black rounded-lg p-6 bg-[#FFFFDD]">
+        <div className="flex justify-between items-center mb-6">
+          <h1 className="text-3xl font-bold">Logbuch — Sternwarte Welzheim</h1>
+        </div>
+
+        <div className="flex justify-center py-10">
+          <div className="w-full max-w-sm bg-white border border-gray-300 rounded-xl shadow-md p-8">
+            <h2 className="text-xl font-semibold text-gray-900 mb-6 text-center">Anmeldung</h2>
+
+            <form action={loginAction} className="space-y-5">
+              <div>
+                <label htmlFor="username" className="block text-sm font-medium text-gray-700 mb-1">
+                  Kürzel
+                </label>
+                <input
+                  id="username"
+                  name="username"
+                  type="text"
+                  required
+                  autoComplete="off"
+                  className="w-full px-3 py-2 border-2 border-gray-400 rounded-lg bg-white text-gray-900 focus:border-blue-500 focus:outline-none text-sm"
+                  placeholder="Kürzel"
+                  disabled={isPending}
+                />
+              </div>
+
+              <div>
+                <label htmlFor="password" className="block text-sm font-medium text-gray-700 mb-1">
+                  Passwort
+                </label>
+                <div className="relative">
+                  <input
+                    id="password"
+                    name="password"
+                    type={showPassword ? 'text' : 'password'}
+                    required
+                    autoComplete="new-password"
+                    className="w-full px-3 py-2 pr-10 border-2 border-gray-400 rounded-lg bg-white text-gray-900 focus:border-blue-500 focus:outline-none text-sm"
+                    placeholder="Passwort"
+                    disabled={isPending}
+                  />
+                  <button
+                    type="button"
+                    onClick={() => setShowPassword((v) => !v)}
+                    tabIndex={-1}
+                    aria-label={showPassword ? 'Passwort verbergen' : 'Passwort anzeigen'}
+                    className="absolute inset-y-0 right-0 px-3 flex items-center text-gray-500 hover:text-gray-800"
+                  >
+                    {showPassword ? (
+                      <svg xmlns="http://www.w3.org/2000/svg" className="h-5 w-5" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13.875 18.825A10.05 10.05 0 0112 19c-4.478 0-8.268-2.943-9.543-7a9.97 9.97 0 011.563-3.029m5.858.908a3 3 0 114.243 4.243M9.878 9.878l4.242 4.242M9.88 9.88l-3.29-3.29m7.532 7.532l3.29 3.29M3 3l3.59 3.59m0 0A9.953 9.953 0 0112 5c4.478 0 8.268 2.943 9.543 7a10.025 10.025 0 01-4.132 4.411m0 0L21 21" />
+                      </svg>
+                    ) : (
+                      <svg xmlns="http://www.w3.org/2000/svg" className="h-5 w-5" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 12a3 3 0 11-6 0 3 3 0 016 0z" />
+                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M2.458 12C3.732 7.943 7.523 5 12 5c4.478 0 8.268 2.943 9.542 7-1.274 4.057-5.064 7-9.542 7-4.477 0-8.268-2.943-9.542-7z" />
+                      </svg>
+                    )}
+                  </button>
+                </div>
+              </div>
+
+              {state?.error && (
+                <div className="bg-red-50 border border-red-300 text-red-700 px-3 py-2 rounded-lg text-sm">
+                  {state.error}
+                </div>
+              )}
+
+              <button
+                type="submit"
+                disabled={isPending}
+                className="w-full py-2 px-4 bg-[#85B7D7] hover:bg-[#6a9fc5] text-black font-medium rounded-lg transition-colors disabled:opacity-50 disabled:cursor-not-allowed text-sm"
+              >
+                {isPending ? 'Anmeldung läuft...' : 'Anmelden'}
+              </button>
+            </form>
+          </div>
+        </div>
+
+        <footer className="mt-8 flex justify-between items-center text-sm text-gray-600 px-4">
+          <div>
+            <a href="mailto:rxf@gmx.de" className="text-blue-600 hover:underline">
+              mailto:rxf@gmx.de
+            </a>
+          </div>
+          <div className="text-right">
+            Version {version} — {buildDate}
+          </div>
+        </footer>
+      </main>
+    </div>
+  );
+}