Issue #49 — Backend: Mark All Notifications as Read

[yusuftomilola]

Location: backend/src/notifications/

Description

Members should be able to clear their entire unread notification count in one action — useful when they return after a period of absence and have many unread items. This endpoint marks every unread notification for the requesting user as read in a single bulk update.

Acceptance Criteria

• PATCH /notifications/read-all marks all of the requesting user's unread notifications as read
  • Performs a bulk update: UPDATE notifications SET isRead = true WHERE userId = :userId AND isRead = false
  • Returns { success: true, message: "All notifications marked as read" }
• Important: The read-all route must be defined before the :id route in the controller to prevent NestJS from treating read-all as a UUID parameter
• Uses @GetCurrentUser('id') to scope the update to the requesting user only
• npx tsc --noEmit passes with no errors