docs: add user manual page for the Activity app

user_manual/activity.rst

@@ -0,0 +1,130 @@
+.. _activity:
+
+======================
+Using the Activity app
+======================
+
+The Activity app keeps track of everything happening in your Nextcloud.
+It records events such as file changes, shares, calendar updates, and
+more, giving you a chronological overview of what happened and when.
+
+The Activity app is enabled by default.
+
+.. figure:: images/activity-stream-all.png
+
+   *The Activity stream showing all recent activities.*
+
+
+Viewing your activity stream
+----------------------------
+
+To view your activity stream, click on the **Activity** icon in the
+top navigation bar or navigate to ``/apps/activity`` in your browser.
+
+The stream shows all events grouped by day. Each entry shows what
+happened, which file or object was affected, and how long ago the
+event occurred. Entries from other apps such as Calendar, Contacts,
+or Talk also appear in the stream if those apps are installed.
+
+
+Filtering activities
+^^^^^^^^^^^^^^^^^^^^
+
+The left sidebar provides filters to narrow down the activity stream:
+
+* **All activities** shows everything.
+* **By you** shows only activities that you triggered yourself.
+* **By others** shows only activities triggered by other users.
+* **File changes** shows only file and folder events (create, modify,
+  delete, rename, move).
+
+Additional filters may appear depending on which apps are installed
+on your Nextcloud instance (e.g. **Favorites**, **Calendar**,
+**Contacts**).
+
+.. figure:: images/activity-stream-self.png
+
+   *The activity stream filtered to show only your own activities.*
+
+.. figure:: images/activity-stream-file-changes.png
+
+   *The activity stream filtered to file changes only.*
+
+
+Activity in the Files sidebar
+-----------------------------
+
+You can also view activities for a specific file or folder directly
+from the Files app. Select a file, open the sidebar and click on the
+**Activity** tab. This shows only the events related to that
+particular file, such as when it was created, modified, shared, or
+tagged.
+
+.. figure:: images/activity-sidebar.png
+
+   *The Activity tab in the Files sidebar showing per-file events.*
+
+
+RSS feed
+--------
+
+The Activity app can provide your activity stream as an RSS feed,
+allowing you to follow your Nextcloud activity from any feed reader.
+
+To enable the RSS feed:
+
+1. Open the Activity app.
+2. Click **Activity settings** at the bottom of the left sidebar.
+3. Enable the **Enable RSS feed** toggle.
+4. Copy the RSS feed link that appears.
+
+.. note:: The RSS feed link contains a secret token. Do not share it
+   with others, as it provides unauthenticated access to your activity
+   stream.
+
+
+Notification settings
+---------------------
+
+You can choose how you want to be notified about different types of
+activities. Go to **Settings** > **Personal** > **Notifications** to
+configure your preferences.
+
+.. figure:: images/activity-settings-personal.png
+
+   *Personal notification settings for the Activity app.*
+
+The settings are organized by category (e.g. **Files**, **Sharing**,
+**Calendar, contacts and tasks**). For each activity type you can
+choose to receive:
+
+* **Mail** notifications (email)
+* **Push** notifications (mobile and desktop)
+
+Check or uncheck the corresponding boxes to enable or disable
+notifications for each activity type.
+
+
+Email notification frequency
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Below the notification matrix you can choose how often email
+notifications are sent:
+
+* **As soon as possible** sends an email shortly after each event.
+* **Hourly** batches notifications and sends them once per hour.
+* **Daily** sends a single email per day.
+* **Weekly** sends a single email per week.
+
+
+Daily activity summary
+^^^^^^^^^^^^^^^^^^^^^^
+
+You can enable a daily summary email that is sent every morning with
+an overview of the previous day's activities. This option is available
+as a separate toggle below the notification frequency setting:
+
+* Check **Send daily activity summary in the morning** to enable it.
+
+The daily summary is independent of the per-event notifications above
+and provides a convenient digest of all activity.

user_manual/contents.rst

@@ -9,6 +9,7 @@ Table of contents
 
     index
     webinterface
+    activity
     files/index
     groupware/index
     talk/index