Add Self-Hosting topic with infrastructure overview and app wishlist

04_Topics/Self-Hosting.md

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+# Self-Hosting
+
+## Infrastructure Overview
+
+### Current Stack
+
+**VPS** (public):
+- Cloudflare Tunnel + Traefik (reverse proxy)
+- authentik (auth provider)
+- joplin, gitea (to be migrated)
+
+**Proxmox** (macbook pro 2017, private):
+- Running VMs/CTs for future services
+
+**Dell R710** (2010, private):
+- restic backup server
+- Pi-hole (DNS)
+- Home Assistant
+
+**Synology DS218+** (NAS, 2x 18TB):
+- NFS mounts → main storage provider
+- Plex
+- Synology stack (Surveillance Station, etc.)
+
+---
+
+## Self-Hosted Apps Wishlist
+
+> Things Claudio wants to self-host or has explored
+
+### Priority / Active
+- [ ] Migrate Gitea from VPS → Proxmox
+- [ ] Migrate Joplin from VPS → Proxmox
+- [ ] Set up proper backup system (restic already on Dell, needs orchestration)
+- [ ] Cloudflare Tunnel management (move off VPS?)
+
+### Considered / Explored
+- [ ] Linkding (bookmarks)
+- [ ] FreshRSS (RSS reader)
+- [ ] Vaultwarden (password manager)
+- [ ] Home Assistant (already running on Dell)
+- [ ] Nextcloud (file sync — already has Synology though)
+- [ ] Uptime Kuma (monitoring)
+- [ ] Glances (system monitoring)
+- [ ] AdGuard Home (alternative to Pi-hole)
+
+---
+
+## Backup Strategy (TODO)
+
+- Restic server already running on Dell
+- Synology is primary storage
+- Need to define backup rotation for:
+  - Gitea data
+  - Joplin data
+  - PostgreSQL DBs
+  - Config files
+
+---
+
+## Notes
+
+- VPS hosts critical infrastructure (auth, proxy) — keep it minimal
+- Proxmox is for ephemeral/experimental services
+- Dell is for always-on base services (DNS, backups, HA)
+- Synology is bulk storage + media