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Brennan Benson
2739246058
* feat(native-chat): light the unread indicators when a structured chat finishes A structured native chat had no attention producer. The PTY lane reaches the unread markers through use-notification-dispatch, whose liveness reads PTY state and whose admission requires terminal panes, so a structured session — which runs on the execution host with no renderer PTY — could finish a turn with nothing lighting anywhere. A backgrounded chat was the worst case: with no mounted pane there was no reader to notice at all. The host derives the completion, because only the host can. The journal keeps committing whether or not a renderer holds a reader, so the new feed observes each commit at StructuredAgentSessionClientDelivery.publishJournal and emits on every running -> settled transition. That edge runs after the subscriber loop and independent of it, which is exactly why a chat nobody is watching can still complete. It is a separate capability-gated stream rather than a field on the status summary: the summary carries no turn identity and no outcome, and is re-broadcast on every status change, so folding a completion into it would make every status consumer a completion consumer. ONLY `success` LIGHTS ANYTHING. Outcome is A0's provider verdict and is never inferred: a turn the host merely watched stop carries no outcome and produces no event, because absent means UNKNOWN. `completed` alone proves nothing — a provider reports its own API error as a finished turn — so the host emits nothing for it and the renderer filters again on the way in. RECOVERY IS LIVE-ONLY. Nothing is retained, queued or replayed on either side. A subscriber learns what settles while it is subscribed and nothing else; on reconnect it re-opens an empty stream and whatever landed during the gap is gone. A retained completion would be a durable "unread is owed" obligation with nothing to retire it, and a reconnect would then light the dot for work the user already read. Tests on both sides pin this so a later refactor cannot quietly turn it into catch-up. The dot itself reuses the neutral policy in attention/agent-attention-policy and #21274's structured surface adapter, so suppression, acknowledgement and addressing keep exactly one implementation and the surface key is never omitted to evade a check. No second suppression rule is introduced. OS delivery is deliberately not wired: this calls applyAgentAttentionUnread, not applyAgentAttention. Also narrows the completion feed's journal dependency to the newest-turn reader it actually uses, and adds journal.newestTurn() beside the existing activeTurnId() on the one shared by-sequence scan rather than a second scan. * test(cross-version): register the turn-completion subscribe on the wire manifest The cross-version gate asserts the structured surface's method list by name and count, so an additive method has to be declared there deliberately. Adding the entry makes the suite call it in both skew directions and stubs the host side, which is the statement the gate exists to force. * fix(native-chat): rebaseline completion feed after rewinds