Initial commit: nult - Ansible deployment toolkit

Merged from veridion-gitea and veridion-act-runner-gitea repos.

nult (Null-T) - instant teleportation from Strugatsky's Noon Universe.
Like Null-T, this toolkit instantly deploys infrastructure.

Roles:
- gitea: Gitea server with PostgreSQL (Docker Compose)
- act_runner: Gitea Actions runner

Playbooks:
- gitea.yml: Deploy Gitea server
- act-runner.yml: Deploy Act Runner
- site.yml: Deploy all services

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.ansible-lint

@@ -0,0 +1,23 @@
+# =============================================================================
+# Ansible-lint Configuration
+# =============================================================================
+# See: https://ansible.readthedocs.io/projects/lint/configuring/
+
+# Use production profile (strictest)
+profile: production
+
+# Exclude paths
+exclude_paths:
+  - .git/
+  - .gitignore
+
+# Enable offline mode (don't download roles/collections)
+offline: true
+
+# Warn about these rules instead of failing
+warn_list:
+  - experimental
+
+# Skip these rules entirely (if needed)
+# skip_list:
+#   - yaml[line-length]