Tasks name their owner (conversation or task); a task waits on other tasks with a waiting state (failFast or allSettled) and runtime.outcomes(); a task that finishes while owned work is live holds completing until it drains; abort handlers run bottom-up; only live owners cascade. The generation owns its tool tasks and waits for them in a tools phase, replacing pi.post-tools and after. Adds Conversation.abort({ background: true }), example 24 (checkout with payments), and reworks example 23 into persistent subagents.
Submissions with request-ID deduplication and handles, the pi.live run
control and presentation document, the built-in pi.generation task
(system prompt preparation, streamed durable partials, retries, deferred
polling, abort), typed entry tokens, stream options and retry policy,
TaskRuntime reads, Tx.settleSubmission, registry conversation setups,
Storage.scanSubmissions, Harness.inspect, and byTaskId attribution.
Waiting calls enable scheduling. The scratch tour is split into
test/examples.
