Add adult content management, Homepage dashboard, and modernize stack

Changes:
- Add Whisparr for automated adult content management
- Add Stash for adult media organization with metadata scraping
- Add Homepage dashboard with service widgets and disk monitoring
- Disable Membarr (replaced by Wizarr)
- Disable Cross-seed (requires advanced configuration)
- Disable Readarr (LinuxServer image deprecated, no amd64 support)
- Update Seerr to develop branch (stable not released yet)
- Add DOCKER_PATH variable for persistent volumes
- Add TrueNAS NFS mount support for disk widgets
- Translate README to English
- Add environment variables documentation
- Add service ports reference table
- Add .env.example template

.env.example

@@ -0,0 +1,27 @@
+# Homelab Docker Stack Environment Variables
+
+# User/Group IDs for container permissions
+PUID=1000
+GUID=1000
+
+# Timezone
+TZ=Europe/Dublin
+
+# Storage paths (TrueNAS NFS mounts)
+BASE_PATH=/mnt/truenas/config
+DOCKER_PATH=/mnt/truenas/docker
+MEDIA_SHARE=/mnt/truenas
+
+# Plex - get claim token from https://plex.tv/claim
+PLEX_CLAIM=
+
+# Server IP (for Unpackerr and other services)
+SERVER_IP=
+
+# Plex Auto Languages
+PLEX_URL=http://YOUR_IP:32400
+PLEX_TOKEN=
+
+# API Keys (configure after services are running)
+SONARR_KEY=
+RADARR_KEY=