# Conversation lifecycle

The `conversations` service exposes metadata subjects and the concluded set.
`concludeIn(tx, ids)` refuses unknown, owned, root, and standing conversations.
`setStanding`, `setAutomaticSummaries`, and `generatedTitle` update durable conversation state.
`generatedTitle` only marks a matching metadata title that no earlier call marked.

The `beforeInput` hook resumes the recipient and its owner/fork ancestors.
This change shares the transaction that places the input.
A write without an input does not resume a conversation.
Unrelated concluded conversations remain concluded.

Summaries do not run in this subset.
`summaryModel()` returns undefined and `requestSummary()` does nothing.
The durable automatic-summary preference remains available for the later summary port.

`host/tests/core_ext.rs` verifies the lifecycle through the real snapshot loader.