增强 Deep Research 可靠性，并接入 8BF 任务卡片与会商上下文。

修复 MySQL 读写分离下的持久化与 SSE 重连问题，报告完成前先落库；8BF 嵌入页支持 taskId 任务卡与独立意图 metadata；前端统一 createClientId 并更新 runtime 配置。

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend-web/src/core/document-rewrite/context.tsx

@@ -6,6 +6,7 @@ import type {
   DocumentRewriteStage,
 } from "@/open-canvas/hooks/useDocumentRewrite";
 import type { DocumentRewriteSummary } from "@/open-canvas/api/rewrite";
+import { createClientId } from "@/lib/client-id";
 
 export type DocumentRewritePresentation = {
   id: string;
@@ -74,10 +75,7 @@ const DocumentRewritePresentationContext =
   createContext<DocumentRewritePresentationContextValue | null>(null);
 
 function createId() {
-  if (typeof crypto !== "undefined" && typeof crypto.randomUUID === "function") {
-    return "drw-ui-" + crypto.randomUUID();
-  }
-  return "drw-ui-" + Date.now().toString(36) + "-" + Math.random().toString(36).slice(2);
+  return createClientId("drw-ui");
 }
 
 export function DocumentRewritePresentationProvider({

frontend-web/src/core/sentiment-agent/use-sentiment-agent-chat.ts

@@ -2,6 +2,7 @@ import type { Message } from "@langchain/langgraph-sdk";
 import { useCallback, useEffect, useRef, useState } from "react";
 
 import { runSentimentAgent, toAgUiMessages } from "./api";
+import { createClientId } from "@/lib/client-id";
 
 const STORAGE_PREFIX = "workspace.sentiment-agent.";
 
@@ -53,9 +54,9 @@ export function useSentimentAgentChat(threadId: string) {
       const question = query.trim();
       if (!question) return;
 
-      const assistantId = `sentiment-ai-${crypto.randomUUID()}`;
+      const assistantId = createClientId("sentiment-ai");
       const userMessage: Message = {
-        id: `sentiment-human-${crypto.randomUUID()}`,
+        id: createClientId("sentiment-human"),
         type: "human",
         content: [{ type: "text", text: question }],
         additional_kwargs: {
@@ -115,7 +116,7 @@ export function useSentimentAgentChat(threadId: string) {
       try {
         await runSentimentAgent({
           threadId,
-          runId: `run-${crypto.randomUUID()}`,
+          runId: createClientId("run"),
           messages: history,
           signal: controller.signal,
           handlers: {

frontend-web/src/core/threads/use-multi-round-rag.ts

@@ -2,6 +2,7 @@ import type { Message } from "@langchain/langgraph-sdk";
 import { useCallback, useEffect, useRef, useState } from "react";
 
 import { readRuntimeEnv } from "@/env";
+import { createClientId } from "@/lib/client-id";
 
 const STORAGE_PREFIX = "workspace.multi-round-rag.";
 
@@ -77,7 +78,7 @@ function writeStoredMessages(threadId: string, messages: Message[]) {
 }
 
 function createId(prefix: string) {
-  return `${prefix}-${crypto.randomUUID()}`;
+  return createClientId(prefix);
 }
 
 function isAbortError(error: unknown) {

frontend-web/src/core/threads/use-single-round-rag.ts

@@ -2,6 +2,7 @@ import type { Message } from "@langchain/langgraph-sdk";
 import { useCallback, useEffect, useRef, useState } from "react";
 
 import { readRuntimeEnv } from "@/env";
+import { createClientId } from "@/lib/client-id";
 
 const STORAGE_PREFIX = "workspace.single-round-rag.";
 
@@ -277,7 +278,7 @@ function mergeSources(current: RagSource[], incoming: RagSource[]): RagSource[]
 }
 
 function createId(prefix: string) {
-  return `${prefix}-${crypto.randomUUID()}`;
+  return createClientId(prefix);
 }
 
 function isAbortError(error: unknown) {