fix(channels): preserve keyed progress state updates

vincentkoc · vincentkoc · commit 8bb6472c4de2 · 2026-06-22T15:12:10.000+08:00
(cherry picked from commit e114001)
diff --git a/src/channels/streaming.ts b/src/channels/streaming.ts
@@ -1131,8 +1131,7 @@ export function mergeChannelProgressDraftLine<TLine extends string | ChannelProg
     );
     if (existingIndex >= 0) {
       const replacement = mergeProgressDraftLineUpdate(lines[existingIndex], line);
-      const replacementIdentity = normalizeChannelProgressDraftLineIdentity(replacement);
-      if (normalizeChannelProgressDraftLineIdentity(lines[existingIndex]) === replacementIdentity) {
+      if (replacement === lines[existingIndex]) {
         return lines;
       }
       const next = [...lines];
