Add Proxmox host role, WireGuard VPN, and public Gitea via Traefik HTTPS

Proxmox host role:
- Admin user setup, SSH hardening (port 2222, no root login)
- claude-code SFTP chroot user
- Unattended upgrades, DuckDNS dynamic DNS updater (vault-encrypted token)
- WireGuard VPN server (10.10.10.0/24) with Fedora client registered
- Proxmox firewall management via pvesh API (idempotent Python script)

Public Gitea exposure:
- Traefik: add HTTPS entrypoint, Let's Encrypt ACME (HTTP-01), StripPrefix
  middleware for /git subpath, HTTP→HTTPS redirect
- Gitea ROOT_URL updated to https://adyrem.duckdns.org/git/
- Pi-hole split DNS: adyrem.duckdns.org → 10.10.1.3 for internal hairpin bypass

SSH config fixes:
- StrictHostKeyChecking no → accept-new across all hosts
- Proxmox jump host: port 2222, user adyrem (root login disabled)

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

ansible/roles/traefik/defaults/main.yml

@@ -4,11 +4,15 @@ traefik_http_port: 80
 traefik_https_port: 443
 traefik_dashboard_port: 8080
 traefik_log_level: "INFO"
+traefik_acme_email: "fanfohcd@gmail.com"
 
 traefik_services:
   - name: gitea
     host: "gitea.homelab"
     backend: "http://10.10.1.125:3000"
+    public_host: "adyrem.duckdns.org"
+    public_path: "/git"
+    strip_prefix: "/git"
   - name: grafana
     host: "grafana.homelab"
     backend: "http://10.10.1.137:3000"