Add deployment artifacts and rift config (Phase 13)

Dockerfiles for API server and web UI (multi-stage, alpine:3.21,
non-root mcr user). systemd units with security hardening. Idempotent
install script. Rift-specific config with MCIAS service token, TLS
paths, and Docker compose with loopback port bindings for mc-proxy
fronting (28443/29443/28080).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

deploy/systemd/mcr-backup.timer

@@ -0,0 +1,10 @@
+[Unit]
+Description=MCR Daily Database Backup
+
+[Timer]
+OnCalendar=*-*-* 02:00:00 UTC
+RandomizedDelaySec=300
+Persistent=true
+
+[Install]
+WantedBy=timers.target