Email comms — welcome, feedback ack, admin reply
- New users get a welcome email on signup with getting-started guidance.
- When you submit feedback through the in-app button, you now get an automatic acknowledgement so you know it landed somewhere a human reads.
- Admin (operator-only): the feedback panel grew a reply box — typing a message and clicking "Send reply" emails the user directly. "Send + resolve" does both in one click.