Local actor IDs match https://<domain>/<user> and the same URL is persisted as the canonical identifier.
WebFinger exposes acct:<user>@<domain> entries using the host-meta template.
/authorize_interaction and /share endpoints are available.
Collections and endpoints
GET /<user> returns the actor document (application/ld+json) including inbox/outbox/followers/following/featured collection URLs and the actor's public key.
GET /<user>/outbox exposes most recent public posts in orderedItems.
GET /<user>/featured publishes user's pinned posts collection.
GET /<user>/followers and /following return empty collections unless the user enables show_contact_metrics, in which case only totals are shared.
Individual public objects are available via /p/<id>, and their replies collections under /r/<id>, with optional paging.
POST /<user>/inbox and /shared-inbox accept signed JSON objects; shared inbox traffic is queued for the appropriate local recipients.
