chore: sync submodule state (parent ref update)

Made-with: Cursor

deployment/common/README.md

@@ -0,0 +1,12 @@
+# deployment-common
+
+Reusable deployment snippets (nginx, systemd, Cloudflare, fail2ban).
+Use as reference or copy into your project.
+
+## Contents
+
+- **nginx-api-location.conf** – Generic `location /api/` proxy snippet (upstream host/port to be adjusted).
+- **systemd-api-service.example** – Example systemd unit for a REST API (env and paths to be adjusted).
+- **cloudflare / fail2ban** – See parent `../cloudflare/` and `../fail2ban/` for full configs.
+
+When this is a separate repo, add as submodule at `deployment/common`.