feat: 重置会话时新增checkbox，清除当前会话的memory

frontend/src/app/workspace/chats/[thread_id]/page.tsx

@@ -1,7 +1,7 @@
 "use client";
 
 import { Ticker } from "@tombcato/smart-ticker";
-import { FilesIcon, ListTodoIcon, XIcon } from "lucide-react";
+import { FilesIcon, XIcon } from "lucide-react";
 import { useRouter } from "next/navigation";
 import { useCallback, useEffect, useMemo, useRef, useState } from "react";
 import { toast } from "sonner";
@@ -23,20 +23,20 @@ import {
 } from "@/components/workspace/artifacts";
 import { useThreadChat } from "@/components/workspace/chats";
 // import { DevTodoList } from "@/components/workspace/dev-todo-list";
-import { IframeTestPanel } from "@/components/workspace/iframe-test-panel";
 import { InputBox } from "@/components/workspace/input-box";
 import { MessageList } from "@/components/workspace/messages";
 import { ThreadContext } from "@/components/workspace/messages/context";
-import { ThreadTitle } from "@/components/workspace/thread-title";
 import { Tooltip } from "@/components/workspace/tooltip";
 import { useSpecificChatMode } from "@/components/workspace/use-chat-mode";
 import { Welcome } from "@/components/workspace/welcome";
 import { getAPIClient } from "@/core/api";
 import { sanitizeArtifactPaths } from "@/core/artifacts/utils";
+import { getBackendBaseURL } from "@/core/config";
 import { useI18n } from "@/core/i18n/hooks";
 import { POST_MESSAGE_TYPES, sendToParent } from "@/core/iframe-messages";
 import { useNotification } from "@/core/notification/hooks";
 import { useLocalSettings } from "@/core/settings";
+import { clearThreadMemoryOnExit } from "@/core/threads/exit-thread-memory";
 import { useThreadStream } from "@/core/threads/hooks";
 import { textOfMessage } from "@/core/threads/utils";
 import { env } from "@/env";
@@ -60,8 +60,6 @@ export default function ChatPage() {
     setArtifacts,
     select: selectArtifact,
     selectedArtifact,
-    deselect: deselectArtifact,
-    setFullscreen: setArtifactsFullscreen,
     fullscreen,
   } = useArtifacts();
   const { threadId, isNewThread, setIsNewThread, isMock, showWelcomeStyle } =
@@ -303,6 +301,8 @@ export default function ChatPage() {
 
   const todoListCollapsed = true;
   const [showExitDialog, setShowExitDialog] = useState(false);
+  const [clearMemoryOnExit, setClearMemoryOnExit] = useState(false);
+  const [isConfirmingExit, setIsConfirmingExit] = useState(false);
   const isStreaming = isUploading || thread.isLoading;
   const handleSubmit = useCallback(
     async (message: Parameters<typeof sendMessage>[1]) => {
@@ -627,7 +627,16 @@ export default function ChatPage() {
         </div>
 
         {/* 退出确认对话框 */}
-        <DevDialog open={showExitDialog} onOpenChange={setShowExitDialog}>
+        <DevDialog
+          open={showExitDialog}
+          onOpenChange={(open) => {
+            setShowExitDialog(open);
+            if (!open) {
+              setClearMemoryOnExit(false);
+              setIsConfirmingExit(false);
+            }
+          }}
+        >
           <DevDialogContent>
             <DevDialogHeader>
               <DevDialogTitle>{t.chatPage.exitDialogTitle}</DevDialogTitle>
@@ -635,11 +644,22 @@ export default function ChatPage() {
             <p className="text-muted-foreground text-sm">
               {t.chatPage.exitDialogDescription}
             </p>
+            <label className="flex cursor-pointer items-center gap-2 text-sm text-ws-fg-primary">
+              <input
+                type="checkbox"
+                className="h-4 w-4 rounded border-ws-divider accent-ws-interactive-primary"
+                checked={clearMemoryOnExit}
+                onChange={(e) => setClearMemoryOnExit(e.target.checked)}
+                disabled={isConfirmingExit}
+              />
+              <span>{t.chatPage.exitDialogClearMemory}</span>
+            </label>
             <DevDialogFooter>
               <Button
                 className="w-full bg-ws-surface-subtle hover:bg-ws-interactive-primary hover:text-primary-foreground"
                 variant="ghost"
                 onClick={() => setShowExitDialog(false)}
+                disabled={isConfirmingExit}
               >
                 {t.common.cancel}
               </Button>
@@ -647,25 +667,31 @@ export default function ChatPage() {
                 className="w-full bg-ws-surface-subtle hover:bg-ws-interactive-primary hover:text-primary-foreground"
                 variant="ghost"
                 onClick={async () => {
-                  // 如果正在生成，先终止再退出
-                  if (thread.isLoading) {
-                    await handleStop();
+                  setIsConfirmingExit(true);
+                  try {
+                    if (thread.isLoading) {
+                      await handleStop();
+                    }
+
+                    await clearThreadMemoryOnExit({
+                      backendBaseURL: getBackendBaseURL(),
+                      threadId: safeThreadId,
+                      shouldClearMemory: clearMemoryOnExit,
+                    });
+
+                    setShowExitDialog(false);
+                    sendToParent({
+                      type: POST_MESSAGE_TYPES.IS_CHATTING,
+                      isChatting: false,
+                    });
+                    router.replace(`/workspace/chats/new?thread_id=${threadId}`);
+                  } catch {
+                    toast.error(t.threadMemoryPanel.toastDeleteFailed);
+                  } finally {
+                    setIsConfirmingExit(false);
                   }
-                  setShowExitDialog(false);
-                  sendToParent({
-                    type: POST_MESSAGE_TYPES.IS_CHATTING,
-                    isChatting: false,
-                  });
-                  // 始终复用 query 中的 thread_id。
-                  const nextQuery = new URLSearchParams();
-                  if (threadId && threadId !== "new") {
-                    nextQuery.set("thread_id", threadId);
-                  }
-                  // /workspace/chats/${threadId}?is_chatting=false
-                  router.replace(
-                    `/workspace/chats/new?thread_id=${threadId}`,
-                  );
                 }}
+                disabled={isConfirmingExit}
               >
                 {t.chatPage.exitDialogConfirm}
               </Button>

frontend/src/core/i18n/locales/en-US.ts

@@ -298,6 +298,7 @@ export const enUS: Translations = {
     exitDialogTitle: "Notice",
     exitDialogDescription:
       "Chat history is automatically deleted every seven days. You will return to the welcome page now. Continue?",
+    exitDialogClearMemory: "Also clear memory for this thread",
     exitDialogConfirm: "Confirm",
     selectedSkillLoadFailed: "Failed to load skill",
     unknownErrorRetry: "An unknown error occurred. Please try again later.",

frontend/src/core/i18n/locales/types.ts

@@ -227,6 +227,7 @@ export interface Translations {
     noArtifactSelectedDescription: string;
     exitDialogTitle: string;
     exitDialogDescription: string;
+    exitDialogClearMemory: string;
     exitDialogConfirm: string;
     selectedSkillLoadFailed: string;
     unknownErrorRetry: string;

frontend/src/core/i18n/locales/zh-CN.ts

@@ -323,6 +323,7 @@ export const zhCN: Translations = {
     exitDialogTitle: "提示",
     exitDialogDescription:
       "每七天自动删除。现在将返回欢迎页且清空聊天消息，是否继续？",
+    exitDialogClearMemory: "同时清除当前会话的记忆",
     exitDialogConfirm: "确定",
     selectedSkillLoadFailed: "技能加载失败",
     unknownErrorRetry: "发生了未知错误，请稍后重试。",

frontend/src/core/threads/exit-thread-memory.test.ts

@@ -0,0 +1,45 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+const { clearThreadMemoryOnExit } = await import(
+  new URL("./exit-thread-memory.ts", import.meta.url).href
+);
+
+void test("clears thread memory when checkbox is enabled", async () => {
+  const calls: Array<{ input: RequestInfo | URL; init?: RequestInit }> = [];
+
+  globalThis.fetch = (async (input, init) => {
+    calls.push({ input, init });
+    return new Response(null, { status: 204 });
+  }) as typeof fetch;
+
+  await clearThreadMemoryOnExit({
+    backendBaseURL: "http://localhost:3000",
+    threadId: "thread-123",
+    shouldClearMemory: true,
+  });
+
+  assert.equal(calls.length, 1);
+  assert.equal(
+    calls[0]?.input,
+    "http://localhost:3000/api/threads/thread-123/memory",
+  );
+  assert.equal(calls[0]?.init?.method, "DELETE");
+});
+
+void test("skips clearing thread memory when checkbox is disabled", async () => {
+  let called = false;
+
+  globalThis.fetch = (async () => {
+    called = true;
+    return new Response(null, { status: 204 });
+  }) as typeof fetch;
+
+  await clearThreadMemoryOnExit({
+    backendBaseURL: "http://localhost:3000",
+    threadId: "thread-123",
+    shouldClearMemory: false,
+  });
+
+  assert.equal(called, false);
+});

frontend/src/core/threads/exit-thread-memory.ts

@@ -0,0 +1,24 @@
+type ClearThreadMemoryOnExitParams = {
+  backendBaseURL?: string;
+  threadId?: string;
+  shouldClearMemory: boolean;
+};
+
+export async function clearThreadMemoryOnExit({
+  backendBaseURL = "",
+  threadId,
+  shouldClearMemory,
+}: ClearThreadMemoryOnExitParams) {
+  if (!threadId || !shouldClearMemory) {
+    return;
+  }
+
+  const res = await fetch(
+    `${backendBaseURL}/api/threads/${encodeURIComponent(threadId)}/memory`,
+    { method: "DELETE" },
+  );
+
+  if (!res.ok) {
+    throw new Error(`Failed to clear thread memory: HTTP ${res.status}`);
+  }
+}