test: isolate Pro install from production

CHANGELOG.md

@@ -2,6 +2,12 @@
 
 All notable changes to this project will be documented in this file.
 
+## Unreleased
+
+### Fixed
+
+- Isolated the anonymous Pro-install CLI test from the live production service so a healthy preview deployment cannot make the deterministic Core suite fail.
+
 ## [0.4.17] - 2026-08-17
 
 ### Added

test/cli.test.ts

@@ -634,7 +634,15 @@ describe("CLI subprocess", () => {
 	test("non-interactive plugin install attempts anonymous preview access without requiring identity", () => {
 		const pluginDir = path.join(tmpDir, "plugin-install");
 		const result = Bun.spawnSync(
-			["bun", "run", path.join(__dirname, "..", "src", "cli.ts"), "plugin", "install", "--json"],
+			[
+				"bun",
+				"--preload",
+				path.join(__dirname, "fixtures", "plugin-service-unavailable.ts"),
+				path.join(__dirname, "..", "src", "cli.ts"),
+				"plugin",
+				"install",
+				"--json",
+			],
 			{
 				env: { ...process.env, AGENT_MEMORY_PLUGIN_DIR: pluginDir },
 				stdout: "pipe",

test/fixtures/plugin-service-unavailable.ts

@@ -0,0 +1,11 @@
+globalThis.fetch = async () =>
+	new Response(
+		JSON.stringify({
+			schemaVersion: 1,
+			error: { code: "service_unavailable", message: "Test plugin service is unavailable" },
+		}),
+		{
+			status: 503,
+			headers: { "content-type": "application/json" },
+		},
+	);