refactor: replace old bot code with Matrix infra configs and scripts

- Remove obsolete Python bot (Wordle, commands, callbacks, welcome)
- Add hookshot/ — all 11 webhook transformation functions + deploy.sh
- Add cinny/ — config.json and dev-update.sh (nightly dev branch build)
- Add landing/ — matrix.lotusguild.org landing page HTML
- Add systemd/ — livekit-server, draupnir, cinny cron unit files
- Add draupnir/ — production config (access token redacted)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

systemd/draupnir.service

@@ -0,0 +1,22 @@
+[Unit]
+Description=Draupnir Matrix Moderation Bot
+After=network.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+User=root
+WorkingDirectory=/opt/draupnir
+ExecStart=/usr/bin/node /opt/draupnir/lib/index.js --draupnir-config /opt/draupnir/config/production.yaml
+Restart=on-failure
+RestartSec=10
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=draupnir
+
+# Resource limits
+MemoryMax=512M
+CPUQuota=80%
+
+[Install]
+WantedBy=multi-user.target