feat(Assignments): Send notifications for assignment events

[marcelklehr]

No description provided.

[Copilot]

Pull request overview

This PR adds user notifications for “assignment” lifecycle events coming from ChattyLLM task processing, by emitting new notification subjects and teaching the app notifier how to render them.

Changes:

• Added NotificationService::sendAssignmentNotification() to create assignment-related notifications tied to a chat session.
• Extended lib/Notification/Notifier.php to render three new notification subjects: approval pending, successful, and failure.
• Triggered assignment notifications from ChattyLLMTaskListener when a session is linked to an assignment.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
lib/Service/NotificationService.php	Introduces a new method for emitting assignment-related notifications based on task/session state.
lib/Notification/Notifier.php	Adds notification rendering (subject/message/link/action) for new assignment notification subjects.
lib/Listener/ChattyLLMTaskListener.php	Sends assignment notifications when a ChattyLLM task finishes and the session is linked to an assignment.

Comments suppressed due to low confidence (2)

lib/Notification/Notifier.php:372

• For translations, prefer positional placeholders (e.g. %1$s) instead of %s so translators can reorder arguments when needed. This message should use a numbered placeholder for the session title.

				$message = $l->t('"%s" was run successfully.', [$params['sessionTitle']]);

lib/Notification/Notifier.php:397

• For translations, prefer positional placeholders (e.g. %1$s) instead of %s so translators can reorder arguments when needed. This message should use a numbered placeholder for the session title.

				$message = $l->t('"%s" failed to run.', [$params['sessionTitle']]);

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