chore: import upstream snapshot with attribution

showcase/scripts/__tests__/paths.ts

@@ -0,0 +1,17 @@
+// Shared path constants for showcase/scripts test suites. Centralized here
+// so that repo-root / scripts-dir / data-dir drift in one place when the
+// directory layout changes — several suites previously recomputed these and
+// any future mismatch would be a silent bug.
+
+import path from "path";
+
+export const SCRIPTS_DIR = path.resolve(__dirname, "..");
+export const REPO_ROOT = path.resolve(SCRIPTS_DIR, "..", "..");
+export const SHELL_DATA_DIR = path.resolve(
+  SCRIPTS_DIR,
+  "..",
+  "shell",
+  "src",
+  "data",
+);
+export const WORKFLOWS_DIR = path.resolve(REPO_ROOT, ".github", "workflows");