devRant API: Notifications

The notification feed maps DevPlace notifications onto the devRant shape. Both endpoints need the
token triple - log in below. DevPlace types map onto devRant types: comment/reply to
comment_discuss, mention to comment_mention, vote to rant_vote, follow to rant_sub.

GET /api/users/me/notif-feed Minimal role: Member

Notification feed

Fetch the logged-in user's notification feed with unread counts.

DELETE /api/users/me/notif-feed Minimal role: Member

Clear notifications

Mark every notification read.