Introduce a shared actor.Profile type (internal/actor) so every platform client can return a
common shape without importing the server package (which would be an import cycle).
- Bluesky: GetActor (app.bsky.actor.getProfile) and SearchActors (app.bsky.actor.searchActors) via XRPC.
- ActivityPub: GetActor (accounts/lookup, falling back to accounts/{id}) and SearchActors
(accounts/search).
- Nostr: GetActor subscribes to kind:0 metadata; SearchActors is best-effort (resolves a
pubkey/npub query to a single profile; Nostr has no global actor search).
- Twitter: GetActor (/users/by/username) and SearchActors (/users/search).
server: register getActor and searchActors as payable tools; searchActors fans the query out
to all four platforms and merges results, skipping any platform that errors.
Schema fixes: document that getPost.collection is Bluesky-only, and that getFeed.uri is a feed
URI for Bluesky but an author handle for other platforms.
Co-Authored-By: Claude (AI assistant) <noreply@anthropic.com>
