iOS app Activity does not respect the server side retention rule

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Steps to reproduce

1. Set a retention period on the server side
2. Click Activity from the bottom tool bar in the iOS app
3. You will find that the mobile app does not automatically delete older activities (keep activities forever), unless manually app reset

Expected behaviour

The Activity on the iOS app should automatically delete older activities based on retention period set by the server

Actual behaviour

the mobile app does not automatically delete older activities (keep activities forever), unless manually app reset

Logs

If applicable, you can post the iOS app or server logs (removing any sensitive information).

Reasoning or why should it be changed/implemented?

For privacy reasons, the iOS app Activity should respect the server side retention rule.

Environment data

iOS version: iOS 26
Nextcloud iOS app version: 33.0.3.7

Server operating system: Debian

Web server: Apache

Database: MySQL

PHP version: Using the latest docker (not all-in-one)

Nextcloud version: Using the latest docker (not all-in-one)

Start at the Activity screen reached from the iOS app's bottom toolbar and reproduce the issue after setting a server-side retention period. Trace how Activity data is received and removed locally, then verify that activities older than the server rule are no longer retained without an app reset. The issue names no files or tests, so locating the relevant code and adding coverage will require exploration.