feat(iac): establish Ansible baseline for Nginx, SearXNG, Valkey, and Certbot

- Reverse-engineer live Debian 13 (trixie) VPS state at miguelpedro.xyz.br
- Add modular Ansible roles: common, certbot, valkey, searxng, and nginx
- Encrypt SearXNG secret_key using ansible-vault in group_vars/all/vault.yml
- Cleanly remove unused example.com Nginx stub symlink (sites-enabled/miguelpedro.xyz.br)
- Scaffold cgit + fcgiwrap role (cgit_enabled: false) for upcoming deployment
- Add DISCOVERY_REPORT.md, COMMAND_LOG.md, README.md, and AGENT_INSTRUCTIONS.md with Self-Updating Protocol

1 files changed, 47 insertions, 0 deletions

diff --git a/roles/cgit/tasks/main.yml b/roles/cgit/tasks/main.yml
new file mode 100644
index 0000000..44f9459
--- /dev/null
+++ b/roles/cgit/tasks/main.yml
@@ -0,0 +1,47 @@
+---
+- name: Install cgit and FastCGI dependencies
+  ansible.builtin.apt:
+    name:
+      - cgit
+      - fcgiwrap
+      - python3-pygments
+      - python3-markdown
+    state: present
+
+- name: Ensure Git repositories root directory exists
+  ansible.builtin.file:
+    path: "{{ cgit_repos_path }}"
+    state: directory
+    owner: www-data
+    group: www-data
+    mode: "0755"
+
+- name: Deploy /etc/cgitrc configuration
+  ansible.builtin.template:
+    src: cgitrc.j2
+    dest: /etc/cgitrc
+    owner: root
+    group: root
+    mode: "0644"
+
+- name: Ensure fcgiwrap socket/service is enabled and running
+  ansible.builtin.systemd:
+    name: fcgiwrap.socket
+    enabled: true
+    state: started
+
+- name: Deploy Nginx virtual host for cgit
+  ansible.builtin.template:
+    src: site-cgit.conf.j2
+    dest: /etc/nginx/sites-available/cgit.conf
+    owner: root
+    group: root
+    mode: "0644"
+  notify: Reload nginx
+
+- name: Enable Nginx virtual host for cgit
+  ansible.builtin.file:
+    src: /etc/nginx/sites-available/cgit.conf
+    dest: /etc/nginx/sites-enabled/cgit.conf
+    state: link
+  notify: Reload nginx