fix(coding-agent): detect Windows pnpm global installs closes #3378

packages/coding-agent/test/config.test.ts

@@ -0,0 +1,30 @@
+import { afterEach, describe, expect, test } from "vitest";
+import { detectInstallMethod, getUpdateInstruction } from "../src/config.js";
+
+const execPathDescriptor = Object.getOwnPropertyDescriptor(process, "execPath");
+
+function setExecPath(value: string): void {
+	Object.defineProperty(process, "execPath", {
+		value,
+		configurable: true,
+	});
+}
+
+afterEach(() => {
+	if (execPathDescriptor) {
+		Object.defineProperty(process, "execPath", execPathDescriptor);
+	}
+});
+
+describe("detectInstallMethod", () => {
+	test("detects pnpm from Windows .pnpm install paths", () => {
+		setExecPath(
+			"C:\\Users\\Admin\\Documents\\pnpm-repository\\global\\5\\.pnpm\\@mariozechner+pi-coding-agent@0.67.68\\node_modules\\@mariozechner\\pi-coding-agent\\dist\\cli.js",
+		);
+
+		expect(detectInstallMethod()).toBe("pnpm");
+		expect(getUpdateInstruction("@mariozechner/pi-coding-agent")).toBe(
+			"Run: pnpm install -g @mariozechner/pi-coding-agent",
+		);
+	});
+});