Initial commit: SmoothSchedule multi-tenant scheduling platform

This commit includes:
- Django backend with multi-tenancy (django-tenants)
- React + TypeScript frontend with Vite
- Platform administration API with role-based access control
- Authentication system with token-based auth
- Quick login dev tools for testing different user roles
- CORS and CSRF configuration for local development
- Docker development environment setup

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

frontend/tests/e2e/masquerade-simple.spec.ts

@@ -0,0 +1,97 @@
+import { test, expect } from '@playwright/test';
+
+test('masquerade functionality works end-to-end', async ({ page }) => {
+  // Listen for console logs and errors
+  page.on('console', msg => console.log(`BROWSER ${msg.type().toUpperCase()}:`, msg.text()));
+  page.on('pageerror', err => console.log('PAGE ERROR:', err.message));
+
+  // Listen for network requests
+  page.on('response', async response => {
+    if (response.url().includes('masquerade') || response.url().includes('current')) {
+      console.log(`API ${response.status()} ${response.url()}`);
+      try {
+        const body = await response.text();
+        console.log(`RESPONSE BODY: ${body.substring(0, 500)}`);
+      } catch (e) {
+        // Response body already consumed
+      }
+    }
+  });
+
+  // Step 1: Login as superuser
+  console.log('Step 1: Login as superuser');
+  await page.goto('http://platform.lvh.me:5174/');
+  await page.waitForLoadState('networkidle');
+
+  // Fill login form
+  await page.locator('#username').fill('poduck');
+  await page.locator('#password').fill('starry12');
+  await page.getByRole('button', { name: /sign in/i }).click();
+
+  // Wait for redirect to dashboard
+  await page.waitForURL(/platform\.lvh\.me/, { timeout: 10000 });
+
+  // Verify we're on platform dashboard
+  await expect(page).toHaveURL(/platform\.lvh\.me/);
+  console.log('✓ Logged in successfully');
+
+  // Step 2: Navigate to Businesses tab
+  console.log('Step 2: Navigate to Businesses tab');
+  await page.getByRole('link', { name: /businesses/i }).click();
+  await page.waitForTimeout(1000);
+
+  // Wait for table to load
+  await page.waitForSelector('table tbody tr', { timeout: 10000 });
+  console.log('✓ Businesses page loaded');
+
+  // Step 3: Click masquerade on first business
+  console.log('Step 3: Click masquerade button');
+  const firstMasqueradeButton = page.getByRole('button', { name: /masquerade/i }).first();
+  await firstMasqueradeButton.waitFor({ state: 'visible' });
+
+  // Get business name before clicking
+  const firstRow = page.locator('table tbody tr').first();
+  const businessName = await firstRow.locator('td').first().textContent();
+  console.log(`Masquerading as owner of: ${businessName}`);
+
+  //Click the button
+  await firstMasqueradeButton.click();
+
+  // Step 4: Wait for redirect
+  console.log('Step 4: Wait for redirect to business subdomain');
+  await page.waitForURL(/lvh\.me/, { timeout: 10000 });
+
+  const finalURL = page.url();
+  console.log(`Final URL: ${finalURL}`);
+
+  // Verify we're on a business subdomain (not platform)
+  expect(finalURL).not.toContain('platform.lvh.me');
+  expect(finalURL).toContain('.lvh.me');
+  console.log('✓ Redirected to business subdomain');
+
+  // Step 5: Wait for page to load and verify we see business dashboard
+  await page.waitForLoadState('networkidle', { timeout: 15000 });
+
+  // Check for elements that should be on business dashboard
+  await page.waitForTimeout(2000);
+  const pageContent = await page.content();
+
+  // Should not see platform-specific content
+  expect(pageContent.toLowerCase()).not.toContain('platform dashboard');
+
+  console.log('✓ Business dashboard loaded');
+
+  // Step 6: Verify Customers link is visible
+  console.log('Step 6: Verify Customers link is visible');
+  const customersLink = page.getByRole('link', { name: /customers/i });
+
+  // Wait for navigation to be ready
+  await page.waitForTimeout(1000);
+
+  await expect(customersLink).toBeVisible({ timeout: 5000 });
+  console.log('✓ Customers link is visible on business dashboard');
+
+  // Take final screenshot
+  await page.screenshot({ path: '/tmp/masquerade-success.png', fullPage: true });
+  console.log('Screenshot saved to /tmp/masquerade-success.png');
+});