Fix double /api/ prefix in API endpoint calls

When VITE_API_URL=/api, axios baseURL is already set to /api. However, all endpoint calls included the /api/ prefix, creating double paths like /api/api/auth/login/.

Removed /api/ prefix from 81 API endpoint calls across 22 files:
- src/api/auth.ts - Fixed login, logout, me, refresh, hijack endpoints
- src/api/client.ts - Fixed token refresh endpoint
- src/api/profile.ts - Fixed all profile, email, password, MFA, sessions endpoints
- src/hooks/*.ts - Fixed all remaining API calls (users, appointments, resources, etc)
- src/pages/*.tsx - Fixed signup and email verification endpoints

This ensures API requests use the correct path: /api/auth/login/ instead of /api/api/auth/login/

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/test-production.spec.ts

@@ -0,0 +1,43 @@
+import { test, expect } from '@playwright/test';
+
+test('production login redirects to correct domain', async ({ page }) => {
+  console.log('\n=== Testing Production Login Flow ===\n');
+
+  // Step 1: Navigate to login
+  console.log('Step 1: Navigating to https://smoothschedule.com/login');
+  await page.goto('https://smoothschedule.com/login');
+  await page.waitForLoadState('networkidle');
+  console.log('   Current URL:', page.url());
+
+  // Step 2: Fill credentials
+  console.log('\nStep 2: Filling credentials (poduck@gmail.com / starry)');
+  await page.fill('input[name="username"]', 'poduck@gmail.com');
+  await page.fill('input[name="password"]', 'starry');
+
+  // Step 3: Click login
+  console.log('\nStep 3: Clicking login button');
+  await page.click('button[type="submit"]');
+
+  // Wait for navigation
+  await page.waitForTimeout(3000);
+  const finalUrl = page.url();
+  console.log('   URL after login:', finalUrl);
+
+  // Check if we're on the correct domain
+  if (finalUrl.includes('platform.smoothschedule.com')) {
+    console.log('\n✅ SUCCESS! Redirected to platform.smoothschedule.com');
+  } else if (finalUrl.includes('platform.lvh.me')) {
+    console.log('\n❌ FAILED! Redirected to platform.lvh.me (wrong domain)');
+    throw new Error('Redirect went to lvh.me instead of smoothschedule.com');
+  } else if (finalUrl.includes('smoothschedule.com/login')) {
+    console.log('\n⚠️  Still on login page - may indicate login failure');
+    throw new Error('Still on login page after submitting credentials');
+  } else {
+    console.log('\n⚠️  Unexpected URL:', finalUrl);
+  }
+
+  // Verify we're actually on platform.smoothschedule.com
+  expect(finalUrl).toContain('platform.smoothschedule.com');
+
+  console.log('\n✅ Test PASSED!');
+});