feat: CV 组件搜索区域 UI 接入完成

- catalog 为 CV_MouseClick/GetText/SetText/MouseHover 新增可选「搜索区域」字段(region widget)
- 属性面板 region 字段渲染「屏幕框选」按钮, 框选后存 {x,y,width,height,imagePath}
- 运行时框选截图内 OCR 定位 + 偏移换算屏幕绝对坐标; 纯坐标范围则全屏截屏后过滤区域内命中
- 新增 2 个区域过滤测试用例(区域内命中/区域外拒绝)

src/main/capabilities/cv-vision.test.ts

@@ -2,7 +2,10 @@ import { beforeEach, describe, expect, it, vi } from "vitest";
 
 const powershellMock = vi.hoisted(() => vi.fn(async () => '{"ok":true}'));
 const detectMock = vi.hoisted(() => vi.fn(async () => ({
-  texts: [{ text: "确认保存", box: [[0, 0], [20, 0], [20, 10], [0, 10]] }]
+  texts: [
+    { text: "确认保存", box: [[0, 0], [20, 0], [20, 10], [0, 10]] },
+    { text: "确认", box: [[100, 200], [130, 200], [130, 210], [100, 210]] }
+  ]
 })));
 
 vi.mock("./desktop", () => ({ powershell: powershellMock }));
@@ -47,4 +50,21 @@ describe("CV vision capabilities", () => {
     }, {} as any)).resolves.toBe("确认保存");
     expect(powershellMock).toHaveBeenCalledTimes(1);
   });
+
+  it("restricts matching to the search region when provided", async () => {
+    // 屏幕上有两处「确认」: 区域(0,0,50,50)内只应命中 (5,5) 那处, 而不是第一个全屏命中 (115,205)
+    await expect(getHandler("CV_MouseClick")!({ log: vi.fn() } as any, { id: "n3", componentId: "CV_MouseClick" } as any, {
+      cvSelector: "确认",
+      searchRegion: JSON.stringify({ x: 0, y: 0, width: 50, height: 50 })
+    }, {} as any)).resolves.toBe(true);
+    const script = String((powershellMock.mock.calls as unknown as Array<[string]>)[1]?.[0] ?? "");
+    expect(script).toContain("SetCursorPos(10, 5)");
+  });
+
+  it("rejects when target is outside the search region", async () => {
+    await expect(getHandler("CV_MouseClick")!({ log: vi.fn() } as any, { id: "n4", componentId: "CV_MouseClick" } as any, {
+      cvSelector: "确认",
+      searchRegion: JSON.stringify({ x: 500, y: 500, width: 50, height: 50 })
+    }, {} as any)).rejects.toThrow("未找到目标文本");
+  });
 });