✨ web_fetch 增加 prompt 摘要功能 & 模型配置支持复制

- web_fetch 工具新增 prompt 参数，支持通过 LLM 对抓取内容进行摘要/提取
- 模型配置页面增加复制按钮，方便基于已有配置快速创建新模型

Author: CodFrm

src/app/service/agent/tools/web_fetch.ts

@@ -6,11 +6,16 @@ import { extractHtmlContent } from "@App/app/service/offscreen/client";
 export const WEB_FETCH_DEFINITION: ToolDefinition = {
   name: "web_fetch",
   description:
-    "Fetch content from a URL. Returns extracted text for HTML pages, raw content for JSON/plain text. Use this to read web pages, APIs, or download text content.",
+    "Fetch content from a URL. Returns extracted text for HTML pages, raw content for JSON/plain text. Use this to read web pages, APIs, or download text content. " +
+    "Use prompt to have the LLM summarize/extract specific information from the fetched content.",
   parameters: {
     type: "object",
     properties: {
       url: { type: "string", description: "The URL to fetch (http/https)" },
+      prompt: {
+        type: "string",
+        description: "When provided, the content will be processed by LLM to extract/summarize based on this prompt",
+      },
       max_length: { type: "number", description: "Max characters to return (no limit by default)" },
     },
     required: ["url"],
@@ -28,10 +33,18 @@ export function stripHtmlTags(html: string): string {
 }
 
 export class WebFetchExecutor implements ToolExecutor {
-  constructor(private sender: MessageSend) {}
+  private summarize?: (content: string, prompt: string) => Promise<string>;
+
+  constructor(
+    private sender: MessageSend,
+    deps?: { summarize?: (content: string, prompt: string) => Promise<string> }
+  ) {
+    this.summarize = deps?.summarize;
+  }
 
   async execute(args: Record<string, unknown>): Promise<string> {
     const url = args.url as string;
+    const prompt = args.prompt as string | undefined;
     const maxLength = args.max_length as number | undefined;
 
     if (!url) {
@@ -102,11 +115,17 @@ export class WebFetchExecutor implements ToolExecutor {
     }
 
     // 截断（仅当显式传入 max_length 时）
-    const truncated = maxLength != null && content.length > maxLength;
+    let truncated = maxLength != null && content.length > maxLength;
     if (truncated) {
       content = content.slice(0, maxLength);
     }
 
+    // LLM 摘要
+    if (prompt && this.summarize) {
+      content = await this.summarize(content, prompt);
+      truncated = false;
+    }
+
     const result: Record<string, unknown> = {
       url,
       content_type: detectedType,

src/app/service/service_worker/agent.ts

@@ -192,7 +192,12 @@ export class AgentService {
     this.taskScheduler.init();
     // 注册永久内置工具
     const searchConfigRepo = new SearchConfigRepo();
-    this.toolRegistry.registerBuiltin(WEB_FETCH_DEFINITION, new WebFetchExecutor(this.sender));
+    this.toolRegistry.registerBuiltin(
+      WEB_FETCH_DEFINITION,
+      new WebFetchExecutor(this.sender, {
+        summarize: (content, prompt) => this.summarizeContent(content, prompt),
+      })
+    );
     this.toolRegistry.registerBuiltin(WEB_SEARCH_DEFINITION, new WebSearchExecutor(this.sender, searchConfigRepo));
     // 注册 OPFS 工作区文件工具
     // 注入 blob URL 创建函数（通过 Offscreen 的 URL.createObjectURL）

src/locales/ach-UG/translation.json

@@ -575,6 +575,7 @@
   "agent_model_name": "Name",
   "agent_model_add": "Add Model",
   "agent_model_edit": "Edit",
+  "agent_model_copy": "Copy",
   "agent_model_delete": "Delete",
   "agent_model_set_default": "Set as Default",
   "agent_model_default_label": "Default",

src/locales/de-DE/translation.json

@@ -607,6 +607,7 @@
   "agent_model_name": "Name",
   "agent_model_add": "Add Model",
   "agent_model_edit": "Edit",
+  "agent_model_copy": "Copy",
   "agent_model_delete": "Delete",
   "agent_model_set_default": "Set as Default",
   "agent_model_default_label": "Default",

src/locales/en-US/translation.json

@@ -607,6 +607,7 @@
   "agent_model_name": "Name",
   "agent_model_add": "Add Model",
   "agent_model_edit": "Edit",
+  "agent_model_copy": "Copy",
   "agent_model_delete": "Delete",
   "agent_model_set_default": "Set as Default",
   "agent_model_default_label": "Default",

src/locales/ja-JP/translation.json

@@ -607,6 +607,7 @@
   "agent_model_name": "名前",
   "agent_model_add": "モデルを追加",
   "agent_model_edit": "編集",
+  "agent_model_copy": "コピー",
   "agent_model_delete": "削除",
   "agent_model_set_default": "デフォルトに設定",
   "agent_model_default_label": "デフォルト",

src/locales/ru-RU/translation.json

@@ -607,6 +607,7 @@
   "agent_model_name": "Name",
   "agent_model_add": "Add Model",
   "agent_model_edit": "Edit",
+  "agent_model_copy": "Copy",
   "agent_model_delete": "Delete",
   "agent_model_set_default": "Set as Default",
   "agent_model_default_label": "Default",

src/locales/vi-VN/translation.json

@@ -607,6 +607,7 @@
   "agent_model_name": "Name",
   "agent_model_add": "Add Model",
   "agent_model_edit": "Edit",
+  "agent_model_copy": "Copy",
   "agent_model_delete": "Delete",
   "agent_model_set_default": "Set as Default",
   "agent_model_default_label": "Default",

src/locales/zh-CN/translation.json

@@ -607,6 +607,7 @@
   "agent_model_name": "名称",
   "agent_model_add": "添加模型",
   "agent_model_edit": "编辑",
+  "agent_model_copy": "复制",
   "agent_model_delete": "删除",
   "agent_model_set_default": "设为默认",
   "agent_model_default_label": "默认",

src/locales/zh-TW/translation.json

@@ -607,6 +607,7 @@
   "agent_model_name": "名稱",
   "agent_model_add": "新增模型",
   "agent_model_edit": "編輯",
+  "agent_model_copy": "複製",
   "agent_model_delete": "刪除",
   "agent_model_set_default": "設為預設",
   "agent_model_default_label": "預設",