Remove CTA button from mobile

src/lib/feature-flags.test.ts

@@ -0,0 +1,30 @@
+import { afterEach, describe, expect, it, vi } from 'vitest';
+
+describe('feature flags', () => {
+  afterEach(() => {
+    vi.unstubAllEnvs();
+    vi.resetModules();
+  });
+
+  it('defaults the mobile CTA button to disabled', async () => {
+    const { isMobileCtaButtonEnabled } = await import('./feature-flags');
+
+    expect(isMobileCtaButtonEnabled()).toBe(false);
+  });
+
+  it('enables the mobile CTA button when the public env flag is truthy', async () => {
+    vi.stubEnv('PUBLIC_ENABLE_MOBILE_CTA_BUTTON', 'enabled');
+
+    const { isMobileCtaButtonEnabled } = await import('./feature-flags');
+
+    expect(isMobileCtaButtonEnabled()).toBe(true);
+  });
+
+  it('treats explicit false values as disabled', async () => {
+    vi.stubEnv('PUBLIC_ENABLE_MOBILE_CTA_BUTTON', 'off');
+
+    const { isMobileCtaButtonEnabled } = await import('./feature-flags');
+
+    expect(isMobileCtaButtonEnabled()).toBe(false);
+  });
+});