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, 23 insertions, 0 deletions

diff --git a/roles/nginx/templates/default-app-searxng.conf.j2 b/roles/nginx/templates/default-app-searxng.conf.j2
new file mode 100644
index 0000000..66b1f86
--- /dev/null
+++ b/roles/nginx/templates/default-app-searxng.conf.j2
@@ -0,0 +1,23 @@
+location /searxng {
+
+    uwsgi_pass unix://{{ searxng_socket_path }};
+
+    include uwsgi_params;
+
+    uwsgi_param    HTTP_HOST             $host;
+    uwsgi_param    HTTP_CONNECTION       $http_connection;
+
+    # see flaskfix.py
+    uwsgi_param    HTTP_X_FORWARDED_PROTO  $scheme;
+    uwsgi_param    HTTP_X_SCRIPT_NAME    /searxng;
+
+    # see botdetection/trusted_proxies.py
+    uwsgi_param    HTTP_X_REAL_IP        $remote_addr;
+    uwsgi_param    HTTP_X_FORWARDED_FOR  $proxy_add_x_forwarded_for;
+}
+
+# To serve the static files via the HTTP server
+#
+# location /searxng/static/ {
+#     alias /usr/local/searxng/searxng-src/searx/static/;
+# }