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/gitea/defaults/main.yml

@@ -1,6 +1,7 @@
 ---
 gitea_http_port: 3000
 gitea_domain: "{{ ansible_host }}"
+gitea_root_url: "https://adyrem.duckdns.org/git/"
 gitea_db_name: gitea
 gitea_db_user: gitea
 gitea_db_password: "{{ vault_gitea_db_password }}"

ansible/roles/gitea/templates/app.ini.j2

@@ -6,7 +6,7 @@ RUN_MODE = prod
 DOMAIN           = {{ gitea_domain }}
 HTTP_ADDR        = 0.0.0.0
 HTTP_PORT        = {{ gitea_http_port }}
-ROOT_URL         = http://{{ gitea_domain }}:{{ gitea_http_port }}/
+ROOT_URL         = {{ gitea_root_url }}
 SSH_DOMAIN       = {{ gitea_domain }}
 SSH_PORT         = 22
 START_SSH_SERVER = false