feat: tailscale add host and copy ip, fix outbound fetch hang and plugin ESM warning

scripts/plugin-build.test.ts

@@ -0,0 +1,42 @@
+import { afterEach, describe, expect, it, vi } from "vitest";
+import fs from "node:fs";
+import os from "node:os";
+import path from "node:path";
+import { build } from "../packages/plugin-sdk/cli/commands/build.mjs";
+
+const cleanups: Array<() => void> = [];
+
+afterEach(() => {
+  while (cleanups.length) cleanups.pop()?.();
+  vi.restoreAllMocks();
+});
+
+function fixturePlugin(): string {
+  const dir = fs.mkdtempSync(path.join(os.tmpdir(), "termix-build-"));
+  cleanups.push(() => fs.rmSync(dir, { recursive: true, force: true }));
+  fs.writeFileSync(
+    path.join(dir, "manifest.json"),
+    JSON.stringify({ id: "build-fixture" }),
+  );
+  fs.mkdirSync(path.join(dir, "src", "backend"), { recursive: true });
+  fs.writeFileSync(
+    path.join(dir, "src", "backend", "index.ts"),
+    "export function activate() {}\n",
+  );
+  return dir;
+}
+
+describe("termix-plugin build", () => {
+  it("marks dist as ESM so Node loads backend.js without reparsing", async () => {
+    vi.spyOn(console, "log").mockImplementation(() => {});
+    const dir = fixturePlugin();
+
+    await build({ cwd: dir });
+
+    const pkg = JSON.parse(
+      fs.readFileSync(path.join(dir, "dist", "package.json"), "utf8"),
+    );
+    expect(pkg).toEqual({ type: "module" });
+    expect(fs.existsSync(path.join(dir, "dist", "backend.js"))).toBe(true);
+  });
+});