v0.6.0

Minor Changes

• 0f663e7: Coordination surface: fair queue, reactive wait-line, and lease renewal.

  • Claims acquire through a server FIFO queue. On contention a claim waits its turn and re-reads before proceeding; reads are never blocked. Writes blocked by another participant’s claim throw a typed AbloBusyError.
  • ablo.<model>.queue(id) — reactive read of the wait-line behind a row: who’s queued, their action, and FIFO position. Synced to peers like activity(id).
  • Backpressure on claim — { wait: false } skips instead of waiting if the row is already held (claim-or-skip dedup); { maxQueueDepth: n } bails with AbloBusyError('queue_too_deep') rather than joining a line already that deep.
  • Lease renewal — a held claim renews automatically while the holder’s connection is alive, so you never size a TTL; it lapses only after the holder goes silent. A queued claim that’s abandoned is dequeued (no ghost waiters).
  • Reads are never gated by a claim, including for agents.
  • Intent vocabulary cleanup: a waiting claim is an Intent with status: 'queued' (position carries its place in line). Removed the unbuilt whenFree.

• BREAKING — API renames (apply when upgrading from 0.5.1):

  • Change-listeners renamed to .onChange(...): ablo.<model>.subscribe(cb), presence.subscribe(), intents.subscribe() → .onChange(...). (subscribe is reserved for an upcoming scope-grant verb.)
  • Row-access API renamed Resource → Model: Ablo.Resource.* → Ablo.Model.*, ablo.resource(name) → ablo.model(name), ModelTarget.resource → ModelTarget.model, error code resource_not_found → model_not_found.