Migrate sigvild-gallery to production environment

- Add multi-environment architecture (homelab + production)
- Create production environment (mini-vps) for client projects
- Create homelab playbook for arch-vps services
- Create production playbook for mini-vps services
- Move sigvild-gallery from homelab to production
- Restructure variables: group_vars/production + host_vars/arch-vps
- Add backup-sigvild.yml playbook with auto-restore functionality
- Fix restore logic to check for data before creating directories
- Add manual variable loading workaround for Ansible 2.20
- Update all documentation for multi-environment setup
- Add ADR-007 documenting multi-environment architecture decision

roles/sigvild-gallery/tasks/deploy_backend.yml

@@ -33,11 +33,7 @@
   notify: restart sigvild-gallery
   tags: [backend]
 
-- name: Restore data from backup if available
-  include_tasks: restore.yml
-  tags: [backend, restore]
-
-- name: Create data directory for PocketBase
+- name: Create data directory for PocketBase (if not created by restore)
   file:
     path: "{{ sigvild_gallery_data_dir }}"
     state: directory