* Introduces an Ansible role for installing and registering `act_runner` for Gitea Actions.
* Automates PostgreSQL and MongoDB deployment on Docker Swarm in the test environment, leveraging Docker named volumes for data persistence.
* Translates core documentation, including `README.md` and `setup/04-test-db-docker-kurulum.md`, to Turkish.
* Adds comprehensive documentation for firewall architecture (`facts/firewall.md`) and Docker Swarm node recovery (`facts/swarm-node-recovery.md`).
* Enhances security hardening by ensuring `fail2ban` is enabled and streamlining admin SSH key management via Ansible.
* Updates Ansible vault structure to support new secret variables and adds `.vault_pass` to `.gitignore`.
This commit introduces several core configurations and structural improvements:
* **User Management:** Creates a new `iklim` administrative user with a securely hashed password, enabled by `python3-passlib`.
* **System Configuration:** Sets the system keyboard layout to Turkish Q (`trq`).
* **Security Hardening:** Refines firewall rules for SSH using a rich rule and ensures `journald` log limits file creation.
* **Ansible Variable Management:** Restructures `group_vars` by consolidating global variables into `group_vars/all/vars.yml` and sensitive data into a dedicated `group_vars/all/vault.yml`.
* **Ansible Compatibility:** Adds `!unsafe` to a `docker info` shell command to prevent future warnings.
