Fix identified issues with server consolidation

inventory-server/vitest.config.js

@@ -0,0 +1,17 @@
+import { defineConfig } from 'vitest/config';
+
+// Exclude macOS AppleDouble sidecar files (`._*.js`) that get created when
+// editing through the NFS mount from macOS. See Deviation #15 in
+// CONSOLIDATION_PLAN.md — these aren't real tests, but vitest's default file
+// glob picks them up and fails the suite when rollup tries to parse them.
+export default defineConfig({
+  test: {
+    include: ['**/*.{test,spec}.{js,mjs,cjs,ts,mts,cts}'],
+    exclude: [
+      '**/node_modules/**',
+      '**/dist/**',
+      '**/build/**',
+      '**/._*',
+    ],
+  },
+});