From f102228a79735ba7589ea24618b12a1e2235330a Mon Sep 17 00:00:00 2001
From: Rick Cheng <rick.cheng@rc-m5.lan>
Date: Wed, 24 Jun 2026 08:30:57 -0700
Subject: [PATCH] fix(core): keep latest streamInfo so lk.transcription_final
 updates for user STT
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setupTextStream dedupes transcription updates by lk.segment_id but only
updated `text`, freezing `streamInfo` at the first interim stream seen for a
segment. As a result mutable attributes — notably lk.transcription_final
flipping "false" -> "true" on the final user STT result — were never surfaced
through useTranscriptions. Carry the latest reader.info forward on update.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---
 packages/core/src/components/textStream.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/packages/core/src/components/textStream.ts b/packages/core/src/components/textStream.ts
index ea3a0db03..736e6bdcf 100644
--- a/packages/core/src/components/textStream.ts
+++ b/packages/core/src/components/textStream.ts
@@ -87,6 +87,12 @@ export function setupTextStream(room: Room, topic: string): Observable<TextStrea
               textStreams[index] = {
                 ...textStreams[index],
                 text: accumulatedText,
+                // Carry the latest streamInfo forward. Transcription updates for a
+                // segment arrive as separate streams sharing the same lk.segment_id;
+                // keeping the original streamInfo would freeze attributes that change
+                // over the segment's lifetime — notably lk.transcription_final flipping
+                // "false" -> "true" on the final user STT result.
+                streamInfo: reader.info,
               };
 
               // Emit the updated array