The server supports DMs between users on different servers. A DM is opened by creating it with a qualified recipient ID (<snowflake>@<domain>); the server picks a deterministic home server and mirrors the channel as a replica on the other side.

What to do

• Allow starting a DM by entering/selecting a remote user's qualified handle.
• Use the existing DM-create path with the qualified recipient ID; surface errors (recipient must be qualified/remote, peer untrusted, etc.).
• Reflect the returned DM channel (qualified channel ID) in the DM list.

Acceptance

• A user can open a DM with someone on another server and send/receive messages.

Server reference

• DM open via qualified recipient: src/routes/users.rs (open_dm call) and src/federation/dm.rs (open_dm, deterministic home_domain_for).
• Cross-server DMs: commit e4ffbe6.

Client touch points

• lib/features/channels/controllers/dm_channels.dart.

Server reference — accordserver branch claude/federated-servers-xlydlj.