refactor: Stamp build information in as "defines" (#2654)

tests/utils/build-info.test.ts

@@ -0,0 +1,18 @@
+import { describe, expect, it } from 'vitest';
+
+import { getGitInfo, getReleaseVersion } from '../../src/utils/build-info';
+
+// As these are running as tests, the won't be build substitutes so this only
+// tests default/fallback values.
+
+describe('getReleaseVersion', () => {
+  it('should report an unbuilt card as a development one', () => {
+    expect(getReleaseVersion()).toBe('dev');
+  });
+});
+
+describe('getGitInfo', () => {
+  it('should report nothing about an unbuilt card', () => {
+    expect(getGitInfo()).toEqual({});
+  });
+});