test: captcha 端到端测试图入库，脱离外部路径依赖

- 5 张 PIL 生成的验证码图（共 30KB）入 __fixtures__/captcha
- 测试路径从 D:/office-test2 硬编码改为 import.meta.dirname 仓库内解析
- fresh clone 后 npm test 即可跑全部 12 项（OCR 模型来自 npm 依赖）

packages/rpa-core/src/capabilities/captcha-caps.test.ts

@@ -1,4 +1,5 @@
 import { existsSync } from "node:fs";
+import path from "node:path";
 import { describe, expect, it } from "vitest";
 import { getHandler } from "../engine/registry";
 import type { CatalogComponent, FlowNode } from "../types";
@@ -7,7 +8,10 @@ import "./remaining-core";
 import "./captcha-caps"; // last-wins：覆盖 remaining-core 的通用实现
 import { cleanCodeText, parseCalculation } from "./captcha-caps";
 
-const ctx = { signal: new AbortController().signal, log: () => {}, vars: {}, evidenceDir: "D:/office-test2/ocr-test" } as unknown as RunContext;
+// 测试图随仓库走（__fixtures__/captcha，PIL 生成），真实 OCR 模型来自 npm 依赖
+const fixturesDir = path.join(import.meta.dirname, "__fixtures__", "captcha");
+const fixture = (name: string) => path.join(fixturesDir, `${name}.png`);
+const ctx = { signal: new AbortController().signal, log: () => {}, vars: {}, evidenceDir: fixturesDir } as unknown as RunContext;
 const node: FlowNode = { id: "smoke", componentId: "smoke", position: { x: 0, y: 0 }, values: {}, options: {} };
 
 describe("parseCalculation 解析层（纯逻辑）", () => {
@@ -36,7 +40,7 @@ describe("parseCalculation 解析层（纯逻辑）", () => {
   });
 });
 
-describe.skipIf(!existsSync("D:/office-test2/ocr-test/captcha_0_3p5_q.png"))("OCR_CalculationCode 端到端（真实模型）", () => {
+describe.skipIf(!existsSync(fixture("captcha_0_3p5_q")))("OCR_CalculationCode 端到端（真实模型）", () => {
   const cases: Array<[string, string]> = [
     ["captcha_0_3p5_q", "8"],
     ["captcha_1_12m7_q", "5"],
@@ -48,7 +52,7 @@ describe.skipIf(!existsSync("D:/office-test2/ocr-test/captcha_0_3p5_q.png"))("OC
     it(`${file} -> ${expected}`, async () => {
       const handler = getHandler("OCR_CalculationCode");
       expect(handler).toBeTruthy();
-      const out = await handler!(ctx, node, { path: `D:/office-test2/ocr-test/${file}.png` }, {} as CatalogComponent);
+      const out = await handler!(ctx, node, { path: fixture(file) }, {} as CatalogComponent);
       console.log(`[${file}]`, String(out));
       expect(String(out)).toBe(expected);
     }, 300000);