feat(footer): add isometric Three.js contact scene

tests/footer-scene.test.mjs

@@ -0,0 +1,15 @@
+import assert from 'node:assert/strict';
+import { readFile } from 'node:fs/promises';
+import test from 'node:test';
+
+test('the Three.js footer scene preserves the real contact destinations', async () => {
+  const contacts = await readFile('src/components/footerContacts.ts', 'utf8');
+  const scene = await readFile('src/components/scenes/FooterScene.tsx', 'utf8');
+
+  assert.match(contacts, /tel:\+989388263077/);
+  assert.match(contacts, /linkedin\.com\/in\/amiirkhl/);
+  assert.match(contacts, /https:\/\/git\.amiirkhl\.ir/);
+  assert.match(contacts, /https:\/\/t\.me\/amiirkhl/);
+  assert.match(scene, /Raycaster/);
+  assert.match(scene, /FooterContactId/);
+});