fix: Move system-level activity app settings to the sample config

config/config.sample.php

@@ -1282,6 +1282,49 @@
 	'customclient_fdroid'
 		=> 'https://f-droid.org/packages/com.nextcloud.client/',
 
+	/**
+	 * Activity
+	 *
+	 * Options for the activity app.
+	 */
+
+	/**
+	 * Retention of activities.
+	 *
+	 * A daily cron job deletes all activities for all users which are older than
+	 * the number of days specified here.
+	 *
+	 * Defaults to ``365``
+	 */
+
+	'activity_expire_days' => 365,
+
+	/**
+	 * Activities in Team Folders and External Storages.
+	 *
+	 * By default, activities in team folders or external storages are only generated
+	 * for the current user. This is due to a limitations in current implementations.
+	 * This config flag makes activities in group folders and external storages work
+	 * like in normal shares (when set to ``true``). WARNING: Enabling this comes with
+	 * some CRITICAL trade-offs:
+	 *
+	 * - If team folder "Advanced Permissions" (ACLs) are used, activities do not
+	 *   respect the permissions and therefore all users see all activities, even
+	 *   for files and directories they do not have access to.
+	 * - Users who had access to a team folder, share, or external storage can see
+	 *   activities in their stream and emails that happen after they are removed
+	 *   until they log in again.
+	 * - Users who are newly added to a team folder, share, or external storage
+	 *   cannot see activities in their stream or emails that happen after they
+	 *   are added until they log in again.
+	 *
+	 * WARNING: Before enabling this, read the warning Activity app chapter.
+	 *
+	 * Defaults to ``false``
+	 **/
+
+	'activity_use_cached_mountpoints' => false,
+
 	/**
 	 * Apps
 	 *