feat: add auto deactivate option for slot plans

Add an autoDeactivate flag to pickup configuration entries, expose it as a dashboard checkbox beside the active state, and keep existing entries defaulting to automatic deactivation unless explicitly disabled.

server.js

@@ -248,6 +248,7 @@ function mergeStoresIntoConfig(config = [], stores = []) {
         id,
         label: store.name || `Store ${id}`,
         active: false,
+        autoDeactivate: true,
         checkProfileId: true,
         onlyNotify: false,
         hidden: hideByDefault