[Bug]: Assistant citations render as raw t3-citation markup in queued messages

Before submitting

• I searched existing issues and did not find a duplicate.
• I included enough detail to reproduce or investigate the problem.

Area

apps/web

Steps to reproduce

1. Cite an assistant response so the composer contains [Assistant quote](t3-citation://v1/...) (introduced in #9146).
2. While the agent turn is still running, send it so it lands as a queued follow-up message.
3. Look at the queued bubble (dashed border, ClockIcon + Queued footer).

Expected behavior

The queued bubble renders the citation the same way a sent user message does — via ChatMarkdown + AssistantCitationChip — or at least a readable quote label, not the raw link destination.

Actual behavior

The queued bubble shows the raw markdown literally:

[Assistant quote](t3-citation://v1/...?text=Yes+...&start=0&end=276&prefix=&suffix=...&comment=...)

with the percent-encoded quote text spilling across lines. Once the turn ends and the message sends normally, it renders correctly. Screenshot: queued bubble shows the full raw t3-citation://v1/8baf8577-.../assistant%3A...?text=Yes+...%E2%80%9E...%29%2C+and+as+spot+rallies+... link followed by the typed reply ("guessing i'd already get most of the delta/ars from atm positions").

Likely cause: QueuedMessageTimelineRow in apps/web/src/components/chat/MessagesTimeline.tsx renders queuedMessage.prompt as plain whitespace-pre-wrap text, while UserTimelineRow -> CollapsibleUserMessageBody -> UserMessageBody -> ChatMarkdown (which allowlists t3-citation and returns AssistantCitationChip per ChatMarkdown.tsx:483,2858-2859, parsed via packages/shared/src/assistantCitations.ts).

Related but distinct: #11341 (raw :codex-followup), #11810 (malformed markdown links as raw text), #5813 (raw codex-file-citation), #9605 (Codex source citations, different scheme).

Impact

Minor bug or occasional failure

Version or commit

upstream main as of 2026-09-17 (citation feature from #9146, merged 2026-09-02)

Environment

web

Workaround

Wait until the turn ends so the message sends normally instead of queueing.

Start in apps/web/src/components/chat/MessagesTimeline.tsx, comparing QueuedMessageTimelineRow with the UserTimelineRow path through CollapsibleUserMessageBody and UserMessageBody. Read ChatMarkdown.tsx and packages/shared/src/assistantCitations.ts, then reproduce the queued-message case. Done means the queued bubble presents the citation as a readable rendered citation or quote label rather than raw t3-citation markup, while normal sent-message rendering remains unchanged.