Volle Mindflux-App ins Deploy-Repo übernehmen

Ersetzt das Hello-World-Gerüst durch die vollständige Anwendung
(com.example.mindflux: 64 Klassen, Thymeleaf-Templates, Static-Assets,
Flyway V1–V6). Deploy-Infrastruktur (.gitea, Dockerfile) bleibt erhalten.

- pom: volle Abhängigkeiten (Security, Thymeleaf, JPA, Flyway), Spring Boot 3.4.4 / Java 17
- docker-compose: SPRING_DATASOURCE_* unverändert; App lauscht auf 8080
  (nginx -> mindflux:8080); Uploads-Volume; Admin-Passwörter via Gitea-Secrets
- Workflow: Deploy-Step injiziert MINDFLUX_ADMIN*_PASSWORD aus Secrets
- .dockerignore ergänzt; Hello-World (com.mindflux) und Test-Datei 'main' entfernt

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/main/resources/static/css/settings.css

@@ -0,0 +1,207 @@
+body {
+    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
+    background: linear-gradient(145deg, #1f1f2e, #2c2c3d);
+    color: #ffffff;
+    margin: 0;
+    padding: 0;
+}
+
+header {
+    position: relative; /* wichtig für .back-button */
+    text-align: center;
+    padding: 2rem 1rem 1rem;
+    margin-bottom: 1rem;
+}
+
+header h1 {
+    font-size: 2.5rem;
+    color: #00e5ff;
+    margin-bottom: 0.5rem;
+}
+
+header .slogan {
+    font-size: 1.2rem;
+    color: #ccc;
+    text-shadow: 0 0 5px rgba(0, 229, 255, 0.2);
+}
+
+/* === Zurück-Button === */
+.back-button {
+    position: absolute;
+    top: 20px;
+    left: 20px;
+    background-color: #00d9ff;
+    color: #0d1117;
+    padding: 10px 18px;
+    border-radius: 10px;
+    font-weight: bold;
+    text-decoration: none;
+    box-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
+    transition: background-color 0.3s ease, transform 0.3s ease;
+    font-size: 1rem;
+    z-index: 1000;
+}
+
+.back-button:hover {
+    background-color: #00aacc;
+    transform: scale(1.05);
+}
+
+/* Responsives Verhalten */
+@media (max-width: 768px) {
+    .back-button {
+        top: 10px;
+        left: 10px;
+        padding: 8px 14px;
+        font-size: 0.9rem;
+    }
+}
+
+@media (max-width: 480px) {
+    .back-button {
+        top: 8px;
+        left: 8px;
+        padding: 6px 10px;
+        font-size: 0.8rem;
+    }
+}
+
+.settings-container {
+    max-width: 1000px;
+    margin: 2rem auto;
+    padding: 2rem;
+    background: rgba(0, 9, 22, 0.95);
+    border-radius: 20px;
+    box-shadow:
+        0 0 15px rgba(0, 229, 255, 0.05),
+        0 4px 10px rgba(0, 0, 0, 0.3);
+    backdrop-filter: blur(4px);
+    display: flex;
+    flex-direction: column;
+    gap: 2rem;
+}
+
+.section {
+    background-color: rgba(10, 15, 25, 0.95);
+    padding: 1.5rem;
+    border-radius: 16px;
+    box-shadow: 0 0 10px rgba(0, 229, 255, 0.1);
+    transition: transform 0.3s ease;
+}
+
+.section:hover {
+    transform: translateY(-5px);
+    box-shadow: 0 6px 20px rgba(0, 229, 255, 0.2);
+}
+
+.section h2 {
+    margin-bottom: 1rem;
+    color: #00e5ff;
+}
+
+.switch-row {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    margin: 1rem 0;
+}
+
+.switch {
+    position: relative;
+    display: inline-block;
+    width: 50px;
+    height: 26px;
+}
+
+.switch input {
+    opacity: 0;
+    width: 0;
+    height: 0;
+}
+
+.slider {
+    position: absolute;
+    cursor: pointer;
+    top: 0; left: 0; right: 0; bottom: 0;
+    background-color: #888;
+    transition: 0.4s;
+    border-radius: 34px;
+}
+
+.slider:before {
+    position: absolute;
+    content: "";
+    height: 18px;
+    width: 18px;
+    left: 4px;
+    bottom: 4px;
+    background-color: white;
+    transition: 0.4s;
+    border-radius: 50%;
+}
+
+input:checked + .slider {
+    background-color: #00e5ff;
+}
+
+input:checked + .slider:before {
+    transform: translateX(24px);
+}
+
+.settings-form {
+    display: flex;
+    flex-direction: column;
+    gap: 1rem;
+}
+
+.settings-form input {
+    padding: 0.8rem;
+    border-radius: 8px;
+    border: none;
+    background: #1a1a2e;
+    color: #fff;
+}
+
+.settings-form button {
+    padding: 0.8rem;
+    border: none;
+    border-radius: 8px;
+    background-color: #00e5ff;
+    color: #00172e;
+    font-weight: bold;
+    cursor: pointer;
+    transition: background-color 0.3s ease, transform 0.2s ease;
+}
+
+.settings-form button:hover {
+    background-color: #4cc3dd;
+    transform: scale(1.02);
+}
+
+.danger-zone button {
+    background-color: #ff4d4d;
+    color: #fff;
+}
+
+.danger-zone button:hover {
+    background-color: #cc0000;
+}
+
+/* === Footer === */
+footer {
+    background-color: #111122;
+    padding: 1rem;
+    text-align: center;
+    font-size: 0.9rem;
+    color: #aaa;
+}
+
+footer a {
+    color: #66d9ef;
+    text-decoration: none;
+    margin: 0 0.5rem;
+}
+
+footer a:hover {
+    text-decoration: underline;
+}