fix(chat): translate session replay cursors

2026-07-17 16:49:31 +08:00
parent c9591bc4cf
commit cce56a4c6a
9 changed files with 304 additions and 21 deletions
@@ -6,6 +6,7 @@ import {
  isTerminalSessionEvent,
  parseSessionSseBlock,
  parseSessionStreamLastEventId,
+  resolveUpstreamResumeEventId,
  shouldPersistSessionStreamEvent,
  shouldSkipUpstreamAfterSessionReplay,
 } from './session-stream.mjs';
@@ -44,3 +45,34 @@ test('terminal detection and upstream skip policy', () => {
  assert.equal(isSessionStreamReplayEnabled({ MEMIND_SESSION_STREAM_REPLAY: '1' }), true);
  assert.equal(parseSessionStreamLastEventId(' abc '), 'abc');
 });
+
+test('upstream resume cursor never falls back to a Portal replay id', () => {
+  assert.equal(
+    resolveUpstreamResumeEventId([], {
+      id: 'portal-uuid',
+      upstreamEventId: null,
+    }),
+    null,
+  );
+  assert.equal(
+    resolveUpstreamResumeEventId([], {
+      id: 'portal-uuid',
+      upstreamEventId: 'upstream-7',
+    }),
+    'upstream-7',
+  );
+});
+
+test('upstream resume cursor uses the newest mappable replay event across turns', () => {
+  assert.equal(
+    resolveUpstreamResumeEventId(
+      [
+        { upstreamEventId: 'upstream-old-finish' },
+        { upstreamEventId: 'upstream-new-message' },
+        { upstreamEventId: null },
+      ],
+      { upstreamEventId: 'upstream-cursor' },
+    ),
+    'upstream-new-message',
+  );
+});