test(housekeeping): stabilize live route scan

src/features/housekeeping/cutover/route-cutover.test.ts

@@ -1,5 +1,5 @@
-import { existsSync, readdirSync, readFileSync } from "node:fs";
-import { join, posix } from "node:path";
+import { spawnSync } from "node:child_process";
+import { existsSync, readFileSync } from "node:fs";
 import { describe, expect, it } from "vitest";
 
 const PREVIEW_ENTRYPOINTS = [
@@ -20,20 +20,6 @@ const CUTOVER_GLOBAL_SOURCES = [
 	"src/components/navigation.tsx",
 ] as const;
 
-function liveSourceFiles(root: string): readonly string[] {
-	return readdirSync(root, { withFileTypes: true }).flatMap((entry) => {
-		const path = posix.normalize(join(root, entry.name).replaceAll("\\", "/"));
-		if (entry.isDirectory()) {
-			if (path === "src/features/housekeeping/migration") return [];
-			return liveSourceFiles(path);
-		}
-		if (!/\.(?:ts|tsx)$/u.test(entry.name) || entry.name.includes(".test.")) {
-			return [];
-		}
-		return [path];
-	});
-}
-
 describe("gated Housekeeping preview coexistence", () => {
 	it("publishes the /ase-next entrypoints and dispatcher", () => {
 		for (const path of PREVIEW_ENTRYPOINTS) {
@@ -93,21 +79,36 @@ describe("gated Housekeeping preview coexistence", () => {
 	});
 
 	it("keeps live Housekeeping links on the canonical namespace", () => {
-		const staleRoute = new RegExp(
+		const staleRoute = [
+			"/",
+			"ase",
+			"([/?#]|[",
+			'"',
+			"'",
+			String.fromCharCode(96),
+			"]|$)",
+		].join("");
+		const scan = spawnSync(
+			"git",
 			[
-				"/",
-				"ase",
-				"(?:[/?#]|[",
-				'"',
-				"'",
-				String.fromCharCode(96),
-				"]|$)",
-			].join(""),
-			"u",
-		);
-		const violations = liveSourceFiles("src").filter((path) =>
-			staleRoute.test(readFileSync(path, "utf8")),
+				"grep",
+				"--untracked",
+				"-l",
+				"-E",
+				staleRoute,
+				"--",
+				":(glob)src/**/*.ts",
+				":(glob)src/**/*.tsx",
+				":(exclude,glob)src/features/housekeeping/migration/**",
+				":(exclude,glob)src/**/*.test.ts",
+				":(exclude,glob)src/**/*.test.tsx",
+			],
+			{ encoding: "utf8" },
 		);
+		expect(scan.error).toBeUndefined();
+		expect([0, 1]).toContain(scan.status);
+		const violations =
+			scan.status === 0 ? scan.stdout.trim().split(/\r?\n/u) : [];
 
 		expect(violations).toEqual([]);
 	});