[teamleaderleo]

What

acpmux's queue list now names who queued a teammate's prompt, so a pane that opens a shared chat cold still knows the row is a teammate's and offers none of the reader's actions. "Cold" means after an app restart, when the authored queued record is older than the attach page.

Leo's words:

• "we can still do the regular chat multiplayer" (2026-10-26)
• "also chief chats we need multiplayer"
• "for the agent chat side, we should be able to just... do stuff. unless lawrence is super actively workin on stuf rn"

Before this PR the author was only in the queued / queue_updated record's _meta.provenance {kind: "person_message", from, fromName} (#25268). QueuedPromptSummary carried only fromAgent.

• QueuedPromptSummary gets author: {id, name} | null, typed as QueuedAuthor. _acpmux/composers queue entries get the same author.
• It is filled from the prompt's provenance only when the kind is person_message (author::listed, built on author::of_provenance). The name falls back to the id when a record has no name. The owner's prompt and an agent's message list null.
• It survives a daemon restart (the restore already keeps provenance) and the teammate's own edit (queue_edit keeps a person_message provenance only for its sender). Another editor's change drops it, as before.
• Peers: a peer's session list passes the summary through as B lists it. server/peer_text.rs still masks only prompt, and author has no session text to mask. The provenance it comes from already reaches peers raw in queued records.
• spec/acpmux-protocol.json and the web's generated types.ts are regenerated.

The pane side, which reads entry.author from the list in mergeQueue, is #25357.

No capture: no UI changes. The only webviews file is the generated protocol types.ts (one new nullable field), which no pane code reads in this PR.

Risk

Low. It adds one protocol field, and nothing reads it yet. The field is always present but nullable. Older clients ignore it. Nothing changes for a chat with no person author.

Tests

Run through cmux-ci test (Linux):

• prompt_provenance::the_queue_list_names_a_persons_prompt_and_no_one_else (new): Ana's queued prompt lists {id, name} in the session summary and in _acpmux/composers, before and after her own edit. The owner's prompt and an agent's message list null.
• queue_restore::a_persons_queued_prompt_stays_theirs_across_a_crash (extended): after a SIGKILL and restart, _acpmux/info lists her as the queue entry's author.
• peer_integration::a_peer_lists_a_persons_queued_prompt_with_its_author (new): a prompt Ana queued through peer A is listed with her as author on A's session list.
• author::tests (extended): listed, including the fallback to the id and null for an agent.
• These still pass: protocol_ir_is_current, only_the_sender_changes_a_waiting_prompt, a_persons_prompt_through_a_peer_is_recorded_as_theirs_on_the_owning_daemon, a_peer_may_not_edit_a_queued_prompt_that_holds_a_secret and to_an_agent_that_does_not_steer_an_agents_send_queues_named. cargo clippy -p acpmux --all-targets -D warnings and cargo fmt --check are clean.

Agent session: agent session

🤖 Generated with Claude Code

[github-actions]

cmux status _{(one comment, edited in place; each line is updated by the job that owns it)}

Review 75ede5f: HQ feed card · gallery before/after runs · checks

App of this head (app.zip, kept 1 day)

gh workflow run reload-build.yml -R manaflow-ai/cmux --ref feat-cmux-next -f tag=pr25431 -f ref=chat-multiplayer-queue-list-author -f platform=macos -f backend_mode=local

Gallery before/after for 75ede5f: 16 states rendered, 3 images differ, 1951 more touched states not rendered. Images are in the run's artifact, not on this public PR.

gh run download 40306781382 -R manaflow-ai/cmux -n gallery-advisory-25431-75ede5f7773b4ba086bb4399672506e9da4ef254 (then read gallery-review.json)

States

State	Theme	Status	Diff	Picked by
agent-pane.chat-width/standard	Apple System Colors Light	changed	1.53%	imports types.ts (2 hops)
agent-pane.chat-width/standard	Apple System Colors	unchanged	0%	imports types.ts (2 hops)
agent-pane.chat-width/wide	Apple System Colors Light	unchanged	0%	imports types.ts (2 hops)
agent-pane.chat-width/wide	Apple System Colors	unchanged	0%	imports types.ts (2 hops)
agent-pane.chat-width/wide-blocks	Apple System Colors Light	unchanged	0%	imports types.ts (2 hops)
agent-pane.chat-width/wide-blocks	Apple System Colors	unchanged	0%	imports types.ts (2 hops)
agent-pane.composer-floats/scrolled-to-end	Apple System Colors Light	unchanged	0%	imports types.ts (2 hops)
agent-pane.composer-floats/scrolled-to-end	Apple System Colors	unchanged	0%	imports types.ts (2 hops)
agent-pane.composer-floats/composer-grown	Apple System Colors Light	unchanged	0%	imports types.ts (2 hops)
agent-pane.composer-floats/composer-grown	Apple System Colors	unchanged	0%	imports types.ts (2 hops)
agent-pane.docked-chat/new-chat	Apple System Colors Light	unchanged	0%	imports types.ts (2 hops)
agent-pane.docked-chat/new-chat	Apple System Colors	unchanged	0%	imports types.ts (2 hops)
agent-pane.docked-chat/after-turn	Apple System Colors Light	unchanged	0%	imports types.ts (2 hops)
agent-pane.docked-chat/after-turn	Apple System Colors	unchanged	0%	imports types.ts (2 hops)
agent-pane.docked-chat/working	Apple System Colors Light	unchanged	0%	imports types.ts (2 hops)
agent-pane.docked-chat/working	Apple System Colors	unchanged	0%	imports types.ts (2 hops)
agent-pane.docked-chat/typing-in-dock	Apple System Colors Light	unchanged	0%	imports types.ts (2 hops)
agent-pane.docked-chat/typing-in-dock	Apple System Colors	unchanged	0%	imports types.ts (2 hops)
agent-pane.docked-chat/long-title	Apple System Colors Light	unchanged	0%	imports types.ts (2 hops)
agent-pane.docked-chat/long-title	Apple System Colors	unchanged	0%	imports types.ts (2 hops)
agent-pane.gutter-select/from-left-margin	Apple System Colors Light	unchanged	0%	imports types.ts (2 hops)
agent-pane.gutter-select/from-left-margin	Apple System Colors	unchanged	0%	imports types.ts (2 hops)
agent-pane.gutter-select/from-right-margin	Apple System Colors Light	unchanged	0%	imports types.ts (2 hops)
agent-pane.gutter-select/from-right-margin	Apple System Colors	unchanged	0%	imports types.ts (2 hops)
agent-pane.inspector/chat-menu	Apple System Colors Light	unchanged	0%	imports types.ts (2 hops)
agent-pane.inspector/chat-menu	Apple System Colors	unchanged	0%	imports types.ts (2 hops)
agent-pane.inspector/wire-log	Apple System Colors Light	changed	0.0302%	imports types.ts (2 hops)
agent-pane.inspector/wire-log	Apple System Colors	changed	0.0271%	imports types.ts (2 hops)
agent-pane.orchestration-lab/local-queue	Apple System Colors Light	unchanged	0%	imports types.ts (2 hops)
agent-pane.orchestration-lab/local-queue	Apple System Colors	unchanged	0%	imports types.ts (2 hops)
agent-pane.orchestration-lab/build-box	Apple System Colors Light	unchanged	0%	imports types.ts (2 hops)
agent-pane.orchestration-lab/build-box	Apple System Colors	unchanged	0%	imports types.ts (2 hops)

_{Pick other states with a Gallery: entry.id, entry.id/variant line in the PR body.}

Tour of 75ede5f777 (run): no media. The tour job failed before the tour ran (build or setup); the run log has the output.

[teamleaderleo]

Owned by an agent session · session

[teamleaderleo]

Bead cx-g5hxa created for this PR by the cmux coordinator.

[github-actions]

Shipped in:

• cmux NEXT nightly 1.0.0-nightly.4032307340502 (35e1c1f88b)
• cmux NEXT nightly 1.0.0-nightly.4032901198601 (079a929b63)