修复「新对话」流式中无法重置 + 参考文献开关默认关闭并加对勾

- 流式回答过程中点「新对话」:URL 同路径导致 react-router navigate 静默 no-op,
  下游 hook 收不到事件;改为显式 navigate(..., {replace:true, state:{resetAt}})
  保证每次点击刷新 location.key,并让 useThreadChat 监听 location.key 触发重置
- useThreadStream 在 threadId 变化时 stop() 掉上一条 SSE,避免旧流继续派发事件
- 引入 KeyedChatPage 用 location.key 作 ChatRuntime key,真正的导航触发整树 remount,
  解决 useStream 内部 stream.values 残留导致欢迎页底下还能看到旧消息的过渡帧问题
- 「参考文献」开关默认关闭(local.ts),开启态在文字前额外多一个 ✓ 对勾

frontend-web/src/components/workspace/chats/use-thread-chat.ts

@@ -2,12 +2,19 @@
 
 import { useParams, usePathname, useSearchParams } from "next/navigation";
 import { useEffect, useState } from "react";
+import { useLocation } from "react-router-dom";
 
 import { uuid } from "@/core/utils/uuid";
 
 export function useThreadChat() {
   const { thread_id: threadIdFromPath } = useParams<{ thread_id: string }>();
   const pathname = usePathname();
+  // ``location.key`` is regenerated on every react-router navigation, even when
+  // the resolved pathname is identical. We depend on it so that clicking
+  // "新对话" while already at /chats/new still triggers a fresh thread reset
+  // (otherwise navigate-to-same-path is silently a no-op and the in-flight
+  // conversation would persist on screen).
+  const locationKey = useLocation().key;
 
   const searchParams = useSearchParams();
   const [threadId, setThreadId] = useState(() => {
@@ -37,7 +44,7 @@ export function useThreadChat() {
     }
     setIsNewThread(false);
     setThreadId(threadIdFromPath);
-  }, [pathname, threadIdFromPath]);
+  }, [pathname, threadIdFromPath, locationKey]);
   const isMock = searchParams.get("mock") === "true";
   return { threadId, setThreadId, isNewThread, setIsNewThread, isMock };
 }

frontend-web/src/components/workspace/input-box.tsx

@@ -2,9 +2,9 @@
 
 import type { ChatStatus } from "ai";
 import {
-  BrainCircuitIcon,
-  BookMarkedIcon,
-  CheckIcon,
+  BrainCircuitIcon,
+  BookMarkedIcon,
+  CheckIcon,
   FileTextIcon,
   GraduationCapIcon,
   LightbulbIcon,
@@ -85,8 +85,8 @@ import {
   DropdownMenuTrigger,
 } from "../ui/dropdown-menu";
 
-import { useRecommendedQuestions } from "@/core/recommended-questions/hooks";
-import { useLocalSettings } from "@/core/settings";
+import { useRecommendedQuestions } from "@/core/recommended-questions/hooks";
+import { useLocalSettings } from "@/core/settings";
 
 
 import { useThread } from "./messages/context";
@@ -177,8 +177,8 @@ export function InputBox({
     onAgentChange: (agentId: string | null) => void;
   };
 }) {
-  const { t } = useI18n();
-  const [localSettings, setLocalSettings] = useLocalSettings();
+  const { t } = useI18n();
+  const [localSettings, setLocalSettings] = useLocalSettings();
   const searchParams = useSearchParams();
   const [modelDialogOpen, setModelDialogOpen] = useState(false);
   const { models } = useModels();
@@ -291,18 +291,18 @@ export function InputBox({
     });
   }, [context, onContextChange]);
 
-  const memoryInjectionEnabled = context.memory_injection_enabled ?? true;
+  const memoryInjectionEnabled = context.memory_injection_enabled ?? true;
   const handleMemoryInjectionToggle = useCallback(() => {
     onContextChange?.({
       ...context,
       memory_injection_enabled: !memoryInjectionEnabled,
     });
-  }, [context, memoryInjectionEnabled, onContextChange]);
-
-  const ragModeEnabled = localSettings.display.ragModeEnabled;
-  const handleRagModeToggle = useCallback(() => {
-    setLocalSettings("display", { ragModeEnabled: !ragModeEnabled });
-  }, [ragModeEnabled, setLocalSettings]);
+  }, [context, memoryInjectionEnabled, onContextChange]);
+
+  const ragModeEnabled = localSettings.display.ragModeEnabled;
+  const handleRagModeToggle = useCallback(() => {
+    setLocalSettings("display", { ragModeEnabled: !ragModeEnabled });
+  }, [ragModeEnabled, setLocalSettings]);
 
   const handleSubmit = useCallback(
     async (message: PromptInputMessage) => {
@@ -628,28 +628,33 @@ export function InputBox({
                 <BrainCircuitIcon className="size-3" />
                 <span className="text-xs font-normal">记忆</span>
               </PromptInputButton>
-            </Tooltip>
-            <Tooltip
-              content={
-                ragModeEnabled
-                  ? "参考文献模式已开启：检索类结果会按编号引用展示"
-                  : "参考文献模式已关闭：技能配置的引用展示不会生效"
-              }
-            >
-              <PromptInputButton
-                className={cn(
-                  "gap-1.5! rounded-full px-3! shadow-none",
-                  ragModeEnabled
-                    ? "border border-emerald-300 bg-emerald-50 text-emerald-700 hover:bg-emerald-100 dark:border-emerald-700 dark:bg-emerald-950/40 dark:text-emerald-200"
-                    : "border-0 bg-transparent text-muted-foreground hover:bg-muted/70 hover:text-foreground dark:text-slate-400 dark:hover:bg-slate-700/70 dark:hover:text-slate-100",
-                )}
-                onClick={handleRagModeToggle}
-              >
-                <BookMarkedIcon className="size-3" />
-                <span className="text-xs font-normal">参考文献</span>
-              </PromptInputButton>
-            </Tooltip>
-            <PromptInputActionMenu>
+            </Tooltip>
+            <Tooltip
+              content={
+                ragModeEnabled
+                  ? "参考文献模式已开启：检索类结果会按编号引用展示"
+                  : "参考文献模式已关闭：点击开启"
+              }
+            >
+              <PromptInputButton
+                type="button"
+                aria-pressed={ragModeEnabled}
+                className={cn(
+                  "gap-1.5! rounded-full px-3! shadow-none",
+                  ragModeEnabled
+                    ? "border border-emerald-300 bg-emerald-50 text-emerald-700 hover:bg-emerald-100 dark:border-emerald-700 dark:bg-emerald-950/40 dark:text-emerald-200"
+                    : "border-0 bg-transparent text-muted-foreground hover:bg-muted/70 hover:text-foreground dark:text-slate-400 dark:hover:bg-slate-700/70 dark:hover:text-slate-100",
+                )}
+                onClick={handleRagModeToggle}
+              >
+                {ragModeEnabled && (
+                  <CheckIcon className="size-3 text-emerald-700 dark:text-emerald-200" />
+                )}
+                <BookMarkedIcon className="size-3" />
+                <span className="text-xs font-normal">参考文献</span>
+              </PromptInputButton>
+            </Tooltip>
+            <PromptInputActionMenu>
               <ModeHoverGuide
                 mode={
                   context.mode === "flash" ||

frontend-web/src/components/workspace/workspace-nav-chat-list.tsx

@@ -4,6 +4,7 @@
 
 import Link from "next/link";
 import { usePathname } from "next/navigation";
+import { useNavigate } from "react-router-dom";
 
 import {
   SidebarGroup,
@@ -37,6 +38,21 @@ export function WorkspaceNavChatList({
 }) {
   const { t } = useI18n();
   const pathname = usePathname();
+  const navigate = useNavigate();
+  // 「新对话」点击时,如果已经在 /chats/new 路径,直接 navigate 会被 react-router
+  // 当成同路径 no-op,不更新 location.key,挂在 location.key 上的下游 hook
+  // (useThreadChat)就感知不到「用户想重开一个对话」,UI 不刷新。
+  // 这里显式拦截:同路径时用 replace + 强制生成新 location.key 的方式重置。
+  const handleNewChatClick = (event: React.MouseEvent<HTMLAnchorElement>) => {
+    if (event.metaKey || event.ctrlKey || event.shiftKey || event.button === 1) {
+      return;
+    }
+    event.preventDefault();
+    navigate("/page/workspace/chats/new", {
+      replace: true,
+      state: { resetAt: Date.now() },
+    });
+  };
   return (
     <SidebarGroup className={cn("px-2", showCollapseTrigger ? "pt-3" : "pt-2")}>
       <SidebarMenu className="gap-1">
@@ -47,7 +63,7 @@ export function WorkspaceNavChatList({
               asChild
               className={cn(NEW_CHAT_CLASS, showCollapseTrigger && "min-w-0 flex-1")}
             >
-              <Link href="/page/workspace/chats/new">
+              <Link href="/page/workspace/chats/new" onClick={handleNewChatClick}>
                 <MessageSquarePlus />
                 <span>{t.sidebar.newChat}</span>
               </Link>