Port of ../elprice/deploy-citadel.sh: build the image locally for the
remote's architecture, ship it over SSH with docker save | docker load,
and run docker compose up -d --no-build in /home/pmp/apps/btcprice.
The deployment compose is standalone rather than joining btc-network,
because citadel runs no btcdata — BTCDATA_URL points at the instance
already running on omarchy (http://192.168.50.42:4102).
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BdMTk61JgUdNH86ttMi4ce
