initial scaffold: Meridian LXC (Node 22 + npm @rynfar/meridian + systemd)

Deploys @rynfar/meridian on a Debian 12 LXC, bound to 0.0.0.0:3456.
OAuth credentials transferred manually after first deploy (claude login on
Mac, scp ~/.claude to /opt/meridian/.claude). systemd unit is enabled but
gated on credentials.json existence so the first deploy doesn't crash-loop.

LXC has no auth layer — security model is LAN-only reachability.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

ansible.cfg

@@ -0,0 +1,6 @@
+[defaults]
+interpreter_python = /usr/bin/python3
+deprecation_warnings = False
+host_key_checking = False
+result_format = yaml
+callbacks_enabled = profile_tasks, timer