feat: support to adjust writing style (#290)

* feat: implment backend for adjust report style

* feat: add web part

* fix test cases

* fix: fix typing

---------

Co-authored-by: Henry Li <henry1943@163.com>

web/src/app/chat/components/input-box.tsx

@@ -9,6 +9,7 @@ import { Detective } from "~/components/deer-flow/icons/detective";
 import MessageInput, {
   type MessageInputRef,
 } from "~/components/deer-flow/message-input";
+import { ReportStyleDialog } from "~/components/deer-flow/report-style-dialog";
 import { Tooltip } from "~/components/deer-flow/tooltip";
 import { Button } from "~/components/ui/button";
 import type { Option, Resource } from "~/core/messages";
@@ -104,7 +105,7 @@ export function InputBox({
         />
       </div>
       <div className="flex items-center px-4 py-2">
-        <div className="flex grow">
+        <div className="flex grow gap-2">
           <Tooltip
             className="max-w-60"
             title={
@@ -133,6 +134,7 @@ export function InputBox({
               <Detective /> Investigation
             </Button>
           </Tooltip>
+          <ReportStyleDialog />
         </div>
         <div className="flex shrink-0 items-center gap-2">
           <Tooltip title={responding ? "Stop" : "Send"}>

web/src/app/settings/tabs/general-tab.tsx

@@ -25,7 +25,6 @@ import type { Tab } from "./types";
 
 const generalFormSchema = z.object({
   autoAcceptedPlan: z.boolean(),
-  enableBackgroundInvestigation: z.boolean(),
   maxPlanIterations: z.number().min(1, {
     message: "Max plan iterations must be at least 1.",
   }),
@@ -35,6 +34,9 @@ const generalFormSchema = z.object({
   maxSearchResults: z.number().min(1, {
     message: "Max search results must be at least 1.",
   }),
+  // Others
+  enableBackgroundInvestigation: z.boolean(),
+  reportStyle: z.enum(["academic", "popular_science", "news", "social_media"]),
 });
 
 export const GeneralTab: Tab = ({