feat: Initial stacks for testing

Added first test stacks:
- monitoring/prometheus
- monitoring/grafana
- monitoring/node-exporter
- communication/gotify
- communication/vaultwarden

All stacks:
- Use localhost ports only (for Caddy reverse proxy)
- Support Komodo Secrets via ${SECRET:secret-name}
- Include README with Caddy integration instructions
- Ready for Komodo v2 Resource Sync

README.md

@@ -0,0 +1,175 @@
+# Komodo Stacks
+
+🦎 **Docker Compose Stacks für Komodo Platform**
+
+Diese Stacks sind für den Einsatz mit **Komodo Core v2** optimiert.
+
+---
+
+## 📁 Struktur
+
+```
+komodo-stacks/
+├── stacks/
+│   ├── monitoring/       # Prometheus, Grafana, Node Exporter
+│   ├── communication/    # Vaultwarden, Gotify, Ntfy
+│   ├── collaboration/    # Nextcloud, Forgejo, WordPress
+│   ├── media/            # Immich, Jellyfin, Plex
+│   ├── infrastructure/   # WireGuard, Portainer
+│   ├── security/         # Authentik, Tinyauth
+│   ├── social/           # GoToSocial, Sharkey
+│   ├── gaming/           # Pterodactyl
+│   ├── utilities/        # SearXNG, Plausible
+│   └── backup/           # Backrest, Karakeep
+└── README.md
+```
+
+---
+
+## 🚀 Verwendung in Komodo
+
+1. **Settings → Resources → Add Resource**
+2. **Git URL:** `https://git.sky-net.it/nocci/komodo-stacks.git`
+3. **Path:** `stacks/`
+4. **Sync** klicken
+
+---
+
+## 📋 Stacks deployen
+
+1. **Ressources** im Komodo Dashboard öffnen
+2. **Stack auswählen**
+3. **Server wählen** (wo Periphery läuft)
+4. **Deploy** klicken
+5. **Warten** bis Container laufen
+
+---
+
+## 🔧 Caddy Integration
+
+**WICHTIG:** Stacks hören nur auf `localhost:PORT`!
+
+Nach dem Deployen, Caddy Config auf dem Server bearbeiten:
+
+```bash
+ssh <server>
+sudo nano /etc/caddy/Caddyfile
+```
+
+Beispiel für Prometheus:
+```caddyfile
+prometheus.example.com {
+    reverse_proxy localhost:9090
+}
+```
+
+Dann:
+```bash
+sudo systemctl reload caddy
+```
+
+---
+
+## 🔐 Secrets
+
+Secrets werden über **Komodo Secrets** verwaltet.
+
+Im `compose.yml`:
+```yaml
+environment:
+  - ADMIN_PASSWORD=${SECRET:my-admin-password}
+```
+
+In Komodo:
+1. **Settings → Secrets**
+2. **Add Secret**
+3. Name: `my-admin-password`
+4. Wert: sicheres Passwort
+
+---
+
+## 📦 Verfügbare Stacks
+
+### Monitoring
+- [prometheus](stacks/monitoring/prometheus/) - Prometheus Monitoring
+- [grafana](stacks/monitoring/grafana/) - Grafana Dashboards
+- [node-exporter](stacks/monitoring/node-exporter/) - System Metrics
+- [promtail](stacks/monitoring/promtail/) - Log Collector
+- [loki](stacks/monitoring/loki/) - Log Aggregation
+
+### Communication
+- [vaultwarden](stacks/communication/vaultwarden/) - Password Manager
+- [gotify](stacks/communication/gotify/) - Push Notifications
+- [ntfy](stacks/communication/ntfy/) - Notification Service
+
+### Collaboration
+- [nextcloud-aio](stacks/collaboration/nextcloud-aio/) - Cloud Storage
+- [forgejo](stacks/collaboration/forgejo/) - Git Server
+- [wordpress](stacks/collaboration/wordpress/) - CMS
+
+### Media
+- [immich](stacks/media/immich/) - Photo Backup
+- [jellyfin](stacks/media/jellyfin/) - Media Server
+
+### Infrastructure
+- [wireguard](stacks/infrastructure/wireguard/) - VPN Server
+- [portainer](stacks/infrastructure/portainer/) - Docker UI
+
+### Security
+- [authentik](stacks/security/authentik/) - SSO Provider
+- [tinyauth](stacks/security/tinyauth/) - Simple Auth
+
+### Social
+- [gotosocial](stacks/social/gotosocial/) - ActivityPub Server
+- [sharkey](stacks/social/sharkey/) - Fediverse Server
+
+### Gaming
+- [pterodactyl-panel](stacks/gaming/pterodactyl-panel/) - Game Panel
+- [pterodactyl-wings](stacks/gaming/pterodactyl-wings/) - Game Daemon
+
+### Utilities
+- [searxng](stacks/utilities/searxng/) - Meta Search Engine
+- [plausible](stacks/utilities/plausible/) - Web Analytics
+- [webcheck](stacks/utilities/webcheck/) - Uptime Monitor
+
+### Backup
+- [backrest](stacks/backup/backrest/) - Backup Server
+- [karakeep](stacks/backup/karakeep/) - Bookmark Manager
+
+---
+
+## 🛠️ Troubleshooting
+
+### Stack wird nicht angezeigt
+
+1. **Resource Sync** im Dashboard manuell ausführen
+2. **Git URL prüfen**
+3. **Path prüfen** (muss `stacks/` sein)
+
+### Container starten nicht
+
+1. **Logs prüfen** im Komodo Dashboard
+2. **Secrets konfiguriert?**
+3. **Ports belegt?**
+
+### Caddy Proxy funktioniert nicht
+
+1. **Caddy Config prüfen:** `sudo caddy validate`
+2. **DNS Records** zeigen auf Server-IP?
+3. **Firewall** Ports 80/443 offen?
+
+---
+
+## 📝 Eigene Stacks hinzufügen
+
+1. **Ordner erstellen:** `stacks/<category>/<stack-name>/`
+2. **compose.yml** erstellen
+3. **README.md** mit Infos
+4. **Commit & Push**
+
+---
+
+**Author:** nocci  
+**Version:** 1.0.0  
+**License:** MIT  
+**Komodo Version:** v2.0.0-dev-123+