Single HTTP POST /join the CLI calls after parsing an invite link +
generating an ed25519 keypair client-side. Broker validates the mesh
exists + is not archived, inserts a mesh.member row (or returns the
existing id for idempotency), returns {ok, memberId, alreadyMember?}.
body: {mesh_id, peer_pubkey, display_name, role}
- peer_pubkey must be 64 hex chars (32 bytes)
- role is "admin" | "member"
v0.1.0 trusts the request — no invite-token validation, no ed25519
signature check. Both land in Step 18 alongside libsodium wrapping.
size cap enforced via MAX_MESSAGE_BYTES (shared with hook endpoint).
structured log line per enrollment with truncated pubkey + whether
it was a new member or re-enrolled existing one.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>