Adds a 'serverless' workspace mode that points the desktop app at any generic
public Nostr relay (e.g. wss://relay.damus.io) with zero Sprout server
infrastructure — no Postgres, no HTTP /query|/events bridge, no NIP-98 auth.
Reuses Sprout's native event kinds (39000 channel metadata, 39002 membership,
kind 9 messages, h-tag scoping); 'serverless' is purely a transport + auth
concern, so the server-mode path is untouched.
Transport: reads/writes go over plain WebSocket (REQ/EOSE, EVENT/OK) instead
of the HTTP bridge; NIP-42 AUTH is answered only if the relay challenges.
Desktop backend:
- AppState.serverless flag + is_serverless(); apply_workspace gains a flag
- ws_relay.rs: query_relay_ws / submit_event_ws / publish_signed_event_ws
- relay.rs: query_relay/submit_event + agent profile sync branch to WS
- events.rs: build_channel_metadata_serverless (39000) + members (39002)
- create_channel/open_dm publish those events directly (DM ids = UUIDv5 over
sorted participants so both sides converge without a server)
- managed agents inherit SPROUT_SERVERLESS into the ACP subprocess env
Agents (full support, not a follow-up):
- sprout-acp: RestClient + HarnessRelay gain serverless mode; query/submit use
plain WS, NIP-42 handshake skipped on (re)connect; SPROUT_SERVERLESS env/arg
- sprout-cli: SproutClient serverless WS query/submit; --serverless flag,
to_ws_url helper, NetworkMsg error variant
- npub respond-to permissions are in-process and work unchanged
Frontend:
- Workspace.mode + workspaceMode()/isServerlessWorkspace() helpers
- relayClient.setServerless() skips the AUTH-wait on connect; late challenges
still answered so writes succeed on relays that require auth
- ServerlessContext/useIsServerless() hides search, pulse, projects, workflows
- Serverless toggle in the Add Workspace dialog and Welcome screen
Docs: docs/SPROUT_LITE_MODE.md updated with the implementation + testing steps.
Michael Neale