test(stork): cover node 22 runtime detection

Add focused regression tests for the environment helper and Stork binary target selection so the Ubuntu 24 and Apple Silicon path stays protected.

test/prebuild/environment.test.js

@@ -0,0 +1,24 @@
+import { describe, expect, it } from 'vitest'
+
+import {
+    isBrowserContext,
+    isDarwin,
+    isLinux
+} from '~/helpers/environment.js'
+
+describe( 'environment helpers', () => {
+    it( 'does not treat Node 22 navigator as a browser runtime', () => {
+        expect( isBrowserContext() ).toBe( false )
+    })
+
+    it( 'detects darwin directly from process.platform', () => {
+        expect( isDarwin() ).toBe( process.platform === 'darwin' )
+    })
+
+    it( 'detects linux-like runtimes directly from process.platform', () => {
+        expect( isLinux() ).toBe([
+            'linux',
+            'openbsd'
+        ].includes( process.platform ) )
+    })
+})