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>

.gitignore

@@ -0,0 +1,45 @@
+# =============================================================================
+# Gitignore for Ansible Gitea Deployment
+# =============================================================================
+# Reference: https://docs.ansible.com/ansible/latest/vault_guide/index.html
+
+# Encrypted vault files (contain secrets)
+# Users should create these locally with: ansible-vault create <file>
+group_vars/all/vault.yml
+group_vars/*/vault.yml
+**/vault.yml
+!**/vault.yml.example
+
+# Vault password files
+.vault_pass
+.vault_password
+*.vault_pass
+
+# Ansible retry files
+*.retry
+
+# Python bytecode
+__pycache__/
+*.py[cod]
+*$py.class
+
+# Virtual environments
+.venv/
+venv/
+ENV/
+
+# IDE files
+.idea/
+.vscode/
+*.swp
+*.swo
+*~
+
+# OS files
+.DS_Store
+Thumbs.db
+
+# Temporary files
+*.tmp
+*.bak
+*.log