fix: add miss import

PsiACE · PsiACE · commit 3bbc20637883 · 2026-02-07T15:12:08.000Z
Signed-off-by: Chojan Shang &lt;psiace@apache.org&gt;
diff --git a/src/acp/helpers.py b/src/acp/helpers.py
@@ -20,6 +20,7 @@
     PlanEntryPriority,
     PlanEntryStatus,
     ResourceContentBlock,
+    SessionInfoUpdate,
     SessionNotification,
     TerminalToolCallContent,
     TextContentBlock,
