Apply selected server maps automatically without config overlays

README.md

@@ -63,6 +63,27 @@ Without RCON_PASSWORD / KOMODO_* set, the pipeline marks pending rows
 `manual` after a sweep — the UI still works, you just don't get real
 restarts. Enough to develop the push/beta flow.
 
+## Map selection and configs
+
+The map selected when deploying a T5 zombies server controls its startup
+rotation automatically. No map-choice config overlay is required. New servers
+use the promoted game baseline and matching overlays when available; otherwise
+Plutainer seeds its usual defaults and Electric Cherry applies the selected map
+through a generated `configs/electric_cherry_map.cfg`, loaded after the main
+config and before map rotation. This file is tracked and restored by drift
+reconciliation; operators do not need to create or promote it. The launch order
+uses Plutainer's [extra arguments and map-rotation controls](https://github.com/Ayymoss/Plutainer/blob/main/docs/configuration.md).
+Plutainer's
+default main config is preserved until a game baseline is promoted.
+
+Beta previews, promotion, and config drift repair all apply the server's stored
+catalog map after composing the baseline and overlays. An old `sv_maprotation`
+overlay cannot override that selection, but its other settings still apply.
+Existing servers receive this behavior on their next config deployment or drift
+reconciliation; this change does not immediately rewrite or restart them.
+Servers with an unknown map retain their existing config behavior. Rollback
+restores the exact prior config bytes.
+
 ## Tests
 
 ```bash