feat: add gitea-actions role for Gitea act-runner

- Create gitea-runner user with podman access
- Install podman-docker for docker CLI compatibility
- Download and configure act_runner binary
- Systemd service for act_runner daemon
- Host-mode runner labels for Fedora

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

ansible/roles/gitea-actions/tasks/deps.yml

@@ -0,0 +1,19 @@
+---
+- name: install podman-docker for docker CLI compatibility
+  become: true
+  ansible.builtin.dnf:
+    name:
+      - podman-docker
+      - golang
+    state: present
+  tags: gitea-actions
+
+- name: enable podman socket for gitea-runner
+  become: true
+  become_user: "{{ gitea_runner_user }}"
+  ansible.builtin.systemd:
+    name: podman.socket
+    enabled: true
+    state: started
+    scope: user
+  tags: gitea-actions