Integrate Vantage live map for guild claims [skip ci]

docs/deployment.md

@@ -23,6 +23,12 @@ The panel listens on `PANEL_PORT` (default `8080`). Docker checks
 `docker compose ps` before directing players to it. If `ADMIN_PASSWORD` is
 blank on first start, the generated password appears in the panel logs.
 
+To show a Vantage world map in the launcher, deploy Vantage next to each game
+server and configure its manifest URL in the panel. See
+[Live map setup](live-map.md). Vantage needs access to the game world's saved
+files, so it runs alongside the game server rather than inside the panel
+container.
+
 The named `panel-data` volume holds the database, uploads, hosted launcher
 downloads, and the generated JWT signing key. Preserve that volume when
 upgrading. To back it up, stop the panel, archive the volume with a temporary