fix(chat): speed up history switch

src/hooks/useTKMindChat.ts

@@ -883,29 +883,28 @@ export function useTKMindChat(
       setPendingTool(null);
       activeRequestId.current = null;
 
-      const resumed = options?.skipResume
-        ? (options.seedSession ?? null)
-        : await withTransientConnectRetry(() =>
-            resumeSession(sessionId, {
-              skipReconcile: options?.skipReconcile ?? false,
-            }),
-          );
-      if (token !== connectTokenRef.current) return;
-
       const knownSession = sessionsRef.current.find((s) => s.id === sessionId);
       const hints = knownSession
         ? { messageCount: knownSession.message_count, updatedAt: knownSession.updated_at }
         : undefined;
-      const { session: detail, messages: history, page } = await withTransientConnectRetry(() =>
+      const detailPromise = withTransientConnectRetry(() =>
         loadSessionDetail(sessionId, hints, {
           before: 0,
           limit: appConfig.sessionMessagePageSize,
         }),
       );
+      const resumedPromise = options?.skipResume
+        ? Promise.resolve(options.seedSession ?? null)
+        : withTransientConnectRetry(() =>
+            resumeSession(sessionId, {
+              skipReconcile: options?.skipReconcile ?? false,
+            }),
+          );
+      const { session: detail, messages: history, page } = await detailPromise;
       if (token !== connectTokenRef.current) return;
 
       writeStoredSessionId(userRef.current?.id, sessionId);
-      setSession({ ...detail, ...(resumed ?? {}), id: sessionId });
+      setSession((current) => (current?.id === sessionId ? { ...detail, ...current, id: sessionId } : { ...detail, id: sessionId }));
       messagesRef.current = history;
       messageHistoryLoadedCountRef.current = history.length;
       messageHistoryTotalRef.current = Math.max(Number(page.total ?? history.length), history.length);
@@ -913,6 +912,9 @@ export function useTKMindChat(
       setMessageHistoryHasMore(messageHistoryHasMoreRef.current);
       setMessageHistoryTotal(messageHistoryTotalRef.current);
       setMessages(history);
+      const resumed = await resumedPromise;
+      if (token !== connectTokenRef.current) return;
+      setSession({ ...detail, ...(resumed ?? {}), id: sessionId });
       setChatState('idle');
       setSessions((prev) =>
         prependUnique(prev, toSessionSummary({ ...detail, ...(resumed ?? {}), id: sessionId })),