feat(frontend): add workspace single and multi round rag

frontend-web/src/pages/ChatPage.tsx

@@ -46,6 +46,8 @@ import { useAgentSelector, useAgentsPaginated } from "@/core/agents";
 import { useI18n } from "@/core/i18n/hooks";
 import { useModels } from "@/core/models/hooks";
 import {
+  isFrontendRagProfile,
+  isMultiRoundRagProfile,
   isSingleRoundRagProfile,
   SINGLE_ROUND_RAG_MODELS,
 } from "@/core/models/single-round-rag";
@@ -59,6 +61,7 @@ import {
 import { useThreadStream } from "@/core/threads/hooks";
 import { queueLlmWikiConversationDeposit } from "@/core/llmwiki/conversation-deposit";
 import { useSingleRoundRagMessages } from "@/core/threads/use-single-round-rag";
+import { useMultiRoundRagMessages } from "@/core/threads/use-multi-round-rag";
 import { useLayoutMode } from "@/core/system-settings/hooks";
 import { useRouteBase } from "@/core/route-base";
 import { textOfMessage } from "@/core/threads/utils";
@@ -310,19 +313,38 @@ export default function ChatPage() {
     },
   });
   const singleRoundRag = useSingleRoundRagMessages(threadId);
+  const multiRoundRag = useMultiRoundRagMessages(threadId);
   const singleRoundRagSelected = isSingleRoundRagProfile(settings.context);
+  const multiRoundRagSelected = isMultiRoundRagProfile(settings.context);
+  const frontendRagSelected = isFrontendRagProfile(settings.context);
   const displayThread = useMemo(() => {
-    if (singleRoundRag.messages.length === 0 && !singleRoundRag.isLoading) {
+    if (
+      singleRoundRag.messages.length === 0 &&
+      multiRoundRag.messages.length === 0 &&
+      !singleRoundRag.isLoading &&
+      !multiRoundRag.isLoading
+    ) {
       return thread;
     }
-    const messages = [...thread.messages, ...singleRoundRag.messages];
+    const messages = [
+      ...thread.messages,
+      ...singleRoundRag.messages,
+      ...multiRoundRag.messages,
+    ];
     return {
       ...thread,
       values: { ...thread.values, messages },
       messages,
-      isLoading: thread.isLoading || singleRoundRag.isLoading,
+      isLoading:
+        thread.isLoading || singleRoundRag.isLoading || multiRoundRag.isLoading,
     } as typeof thread;
-  }, [singleRoundRag.isLoading, singleRoundRag.messages, thread]);
+  }, [
+    multiRoundRag.isLoading,
+    multiRoundRag.messages,
+    singleRoundRag.isLoading,
+    singleRoundRag.messages,
+    thread,
+  ]);
 
   const writingArtifactPath = useMemo(() => {
     const isMarkdown = (path: string | null | undefined) =>
@@ -337,9 +359,9 @@ export default function ChatPage() {
 
   const handleSubmit = useCallback(
     (message: PromptInputMessage) => {
-      if (singleRoundRagSelected) {
+      if (frontendRagSelected) {
         if (message.files && message.files.length > 0) {
-          toast.error("单轮 RAG 问答暂不支持附件，请移除附件后重试。");
+          toast.error("RAG 问答暂不支持附件，请移除附件后重试。");
           return;
         }
         setHasStartedConversation(true);
@@ -366,13 +388,23 @@ export default function ChatPage() {
                   .catch(() => undefined);
               }
             }
-            await singleRoundRag.submit({
-              targetThreadId,
-              query: message.text,
-              modelName: settings.context.model_name ?? "OpenAI3",
-            });
+            if (multiRoundRagSelected) {
+              await multiRoundRag.submit({ targetThreadId, query: message.text });
+            } else {
+              await singleRoundRag.submit({
+                targetThreadId,
+                query: message.text,
+                modelName: settings.context.model_name ?? "OpenAI3",
+              });
+            }
           } catch (error) {
-            toast.error(error instanceof Error ? error.message : "单轮 RAG 问答失败。");
+            toast.error(
+              error instanceof Error
+                ? error.message
+                : multiRoundRagSelected
+                  ? "多轮 RAG 问答失败。"
+                  : "单轮 RAG 问答失败。",
+            );
           }
         })();
         return;
@@ -483,6 +515,9 @@ export default function ChatPage() {
       writingArtifactPath,
       singleRoundRag,
       singleRoundRagSelected,
+      multiRoundRag,
+      multiRoundRagSelected,
+      frontendRagSelected,
       routeBase,
       setIsNewThread,
       setThreadId,
@@ -580,8 +615,12 @@ export default function ChatPage() {
       singleRoundRag.stop();
       return;
     }
+    if (multiRoundRag.isLoading) {
+      multiRoundRag.stop();
+      return;
+    }
     await thread.stop();
-  }, [singleRoundRag, thread]);
+  }, [multiRoundRag, singleRoundRag, thread]);
 
   const promptPrefixProp = useMemo(() => {
     if (!promptPrefixSettings?.enabled) return undefined;
@@ -776,13 +815,18 @@ export default function ChatPage() {
                             : "ready"
                       }
                       context={settings.context}
-                      extraModels={SINGLE_ROUND_RAG_MODELS}
+                      extraModels={
+                        singleRoundRagSelected
+                          ? SINGLE_ROUND_RAG_MODELS
+                          : undefined
+                      }
                       disabled={
                         env.NEXT_PUBLIC_STATIC_WEBSITE_ONLY === "true" ||
                         isUploading ||
                         agentHandoffPending ||
                         knowledgeSelectionLoading ||
-                        singleRoundRag.isLoading
+                        singleRoundRag.isLoading ||
+                        multiRoundRag.isLoading
                       }
                       onContextChange={(context) =>
                         setSettings("context", context)