Display message delivery errors in 1:1 conversations #185
Description
Problem
When a message fails to be delivered (e.g., due to a server-to-server connection failure), Fluux does not display any error indicator to the user. The delivery failure is silently ignored, and users only discover the problem if they check another client.
Expected behavior
Failed messages should display a visual error indicator so the user is immediately aware of the delivery failure.
Proposed solution
Show a red exclamation icon below the failed message, with two separate clickable actions:
- View error — display the error details (e.g., the XMPP error stanza reason)
- Retry — re-send the message
These should be two distinct options, not a single combined action.