test: 删除 imageExtraction 相关的测试文件

移除已弃用的图像提取功能对应的测试文件，该功能已被其他实现替代。

frontend/react-template/src/utils/__tests__/imageExtraction.test.ts

@@ -1,110 +0,0 @@
-import { describe, it, expect } from "vitest";
-import { extractImagesFromResult, extractImagesFromMessage } from "../imageExtraction";
-import type { Message } from "../../types/message";
-
-describe("extractImagesFromResult", () => {
-  it("should return empty array for null/undefined", () => {
-    expect(extractImagesFromResult(null)).toEqual([]);
-    expect(extractImagesFromResult(undefined)).toEqual([]);
-  });
-
-  it("should extract images from OpenAI-like MsgResult array", () => {
-    const input = [
-      { type: "text", text: "hello" },
-      { type: "image_url", image_url: { url: "http://example.com/1.png" } },
-    ];
-    const result = extractImagesFromResult(input);
-    expect(result).toHaveLength(1);
-    expect(result[0].url).toBe("http://example.com/1.png");
-  });
-
-  it('should extract images from custom type="image" with base64', () => {
-    const input = [
-      {
-        type: "image",
-        source: {
-          media_type: "image/jpeg",
-          data: "base64data",
-        },
-      },
-    ];
-    const result = extractImagesFromResult(input);
-    expect(result).toHaveLength(1);
-    expect(result[0].url).toBe("data:image/jpeg;base64,base64data");
-    expect(result[0].alt).toBe("Base64 Image");
-  });
-
-  it("should extract markdown images from string result", () => {
-    const input =
-      "Here is an image: ![alt text](http://example.com/2.png) and another ![img2](http://example.com/3.png)";
-    const result = extractImagesFromResult(input);
-    expect(result).toHaveLength(2);
-    expect(result[0].url).toBe("http://example.com/2.png");
-    expect(result[0].alt).toBe("alt text");
-    expect(result[1].url).toBe("http://example.com/3.png");
-    expect(result[1].alt).toBe("img2");
-  });
-
-  it("should extract HTML img tags from string result", () => {
-    const input = 'Some text <img src="http://example.com/4.png" alt="html img" /> end';
-    const result = extractImagesFromResult(input);
-    expect(result).toHaveLength(1);
-    expect(result[0].url).toBe("http://example.com/4.png");
-  });
-
-  it("should extract images from JSON-embedded string (read_file output)", () => {
-    const input = `
-    # 01_file.json
-    <file>
-        1| {
-        2|   "image_url": "http://res.cybertogether.net/crawler/image/test.jpeg",
-        3|   "other": "value"
-        4| }
-    `;
-    const result = extractImagesFromResult(input);
-    expect(result).toHaveLength(1);
-    expect(result[0].url).toBe("http://res.cybertogether.net/crawler/image/test.jpeg");
-  });
-
-  it("should extract images from complex escaped JSON string (user case)", () => {
-    // This simulates the string exactly as provided by the user, where the "result" is a string containing file content
-    // Note: The user provided example shows "image_url": " http://..."
-    // We need to be careful about matching the quote and spaces.
-    const input = `# 01_图片分段_07_g3_人物与玫瑰花.json
-
-<file>
-    1| {
-    2|   "image_url": "http://res.cybertogether.net/crawler/image/e70bbea964cfcf0225744da00e8e7939.jpeg",
-    3|   "sections": [
-    4|     {
-    5|       "名称": "人物与玫瑰花",
-`;
-    const result = extractImagesFromResult(input);
-    expect(result).toHaveLength(1);
-    expect(result[0].url).toBe("http://res.cybertogether.net/crawler/image/e70bbea964cfcf0225744da00e8e7939.jpeg");
-  });
-});
-
-describe("extractImagesFromMessage", () => {
-  it("should extract from message with string content", () => {
-    const msg: Message = {
-      content: "![test](http://example.com/test.png)",
-    };
-    const result = extractImagesFromMessage(msg);
-    expect(result).toHaveLength(1);
-    expect(result[0].url).toBe("http://example.com/test.png");
-  });
-
-  it("should extract from message with MessageContent object", () => {
-    const msg: Message = {
-      content: {
-        result: [{ image_url: { url: "http://example.com/obj.png" } }],
-      },
-    };
-    // Need to cast to any because Message type definition might be strict about content structure
-    // but at runtime this is what we expect
-    const result = extractImagesFromMessage(msg);
-    expect(result).toHaveLength(1);
-    expect(result[0].url).toBe("http://example.com/obj.png");
-  });
-});