阶段1-rpa-core建包: engine+31个纯Node能力迁入packages/rpa-core, 领域类型单一源化, createEngine工厂收拢模块级状态

- engine/(registry/types/runtime/expression)物理迁入包, 解耦shared/types(域类型归包, 宿主type-only re-export)
- 31个纯Node能力+27个测试迁入包; 宿主留守Electron/浏览器/AI依赖能力, index.ts经@rpa/core/capabilities拉起
- 新增createEngine()/defaultEngine: excel缓存/Excel句柄/db连接/FTP客户端/OCR实例/拟真设置挂引擎实例
- remaining-core子流程依赖改为host-bridge注入, 包内不再import宿主flows
- 宿主main/index.ts启动时注入子流程源; electron-vite/vitest/tsconfig配@rpa/core源码别名
- 验证: typecheck绿, 快照909个id diff为零, 332测试过(2个桌面冒烟因会话无交互SetForegroundWindow被拒, 环境阻塞)

packages/rpa-core/src/capabilities/message-recv.test.ts

@@ -0,0 +1,67 @@
+import net from "node:net";
+import { afterEach, describe, expect, it } from "vitest";
+import type { CatalogComponent, FlowNode } from "../types";
+import type { RunContext } from "../engine/types";
+import { getHandler, hasCapability } from "../engine/registry";
+import "./message";
+
+const context = {} as RunContext;
+const component = {} as CatalogComponent;
+const node = (id: string): FlowNode => ({ id, componentId: id, position: { x: 0, y: 0 }, values: {}, options: {} });
+const ids = [
+  "Mail_FindMail", "Mail_FindMail_v1", "Mail_FindMail_v2",
+  "Mail_ReplyMail", "Mail_ReplyMail_v1", "Mail_ReplyMail_v2",
+  "Mail_DoGetMailMessage", "Mail_DoGetMailMessage_v1", "Mail_DoGetMailMessage_v2"
+];
+
+afterEach(async () => {});
+
+describe("mail receive and reply", () => {
+  it("registers find, reply and Outlook message capabilities", () => {
+    for (const id of ids) expect(hasCapability(id), id).toBe(true);
+  });
+
+  it("replies through SMTP with the selected mail sender", async () => {
+    let received = "";
+    const server = net.createServer((socket) => {
+      socket.setEncoding("utf8");
+      socket.write("220 localhost ESMTP\r\n");
+      let buffer = "";
+      let dataMode = false;
+      socket.on("data", (chunk) => {
+        buffer += chunk;
+        const lines = buffer.split("\r\n");
+        buffer = lines.pop() || "";
+        for (const line of lines) {
+          if (dataMode) {
+            if (line === ".") {
+              dataMode = false;
+              socket.write("250 queued\r\n");
+            } else received += line + "\n";
+          } else if (/^EHLO/i.test(line)) socket.write("250-localhost\r\n250 OK\r\n");
+          else if (/^MAIL FROM/i.test(line)) socket.write("250 ok\r\n");
+          else if (/^RCPT TO/i.test(line)) socket.write("250 ok\r\n");
+          else if (/^DATA/i.test(line)) { dataMode = true; socket.write("354 end with dot\r\n"); }
+          else if (/^QUIT/i.test(line)) { socket.write("221 bye\r\n"); socket.end(); }
+          else socket.write("250 OK\r\n");
+        }
+      });
+    });
+    await new Promise<void>((resolve) => server.listen(0, "127.0.0.1", resolve));
+    const port = (server.address() as net.AddressInfo).port;
+    try {
+      const handler = getHandler("Mail_ReplyMail_v2");
+      expect(handler).toBeTruthy();
+      const result = await handler!(context, node("Mail_ReplyMail_v2"), {
+        account_obj: { host: "127.0.0.1", port, account: "robot@example.com", secure: "False" },
+        mail_obj: { from: "owner@example.com", subject: "status", messageId: "<abc@example.com>" },
+        content: "reply delivered"
+      }, component);
+      expect(result).toMatchObject({ accepted: ["owner@example.com"] });
+      expect(received).toContain("reply delivered");
+      expect(received).toContain("Re: status");
+    } finally {
+      await new Promise<void>((resolve) => server.close(() => resolve()));
+    }
+  }, 30000);
+});