feat: add E2E smoke tests, architecture docs, and operations runbook

- 27 Playwright E2E tests covering login (3 roles), CC Agent pages
  (call desk, call history, patients, appointments, my performance,
  sidebar, sign-out), and Supervisor pages (all 11 pages + sidebar)
- Tests run against live EC2 at ramaiah.engage.healix360.net
- Last test completes sign-out to release agent session for next run
- Architecture doc with updated Mermaid diagram including telephony
  dispatcher, service discovery, and multi-tenant topology
- Operations runbook with SSH access (VPS + EC2), accounts, container
  reference, deploy steps, Redis ops, and troubleshooting guide

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

e2e/auth.setup.ts

@@ -0,0 +1,22 @@
+import { test as setup, expect } from '@playwright/test';
+import path from 'path';
+import { fileURLToPath } from 'url';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+const authFile = path.join(__dirname, '.auth/agent.json');
+
+setup('login as CC Agent', async ({ page }) => {
+    await page.goto('/login');
+
+    await page.locator('input[type="email"], input[name="email"], input[placeholder*="@"]').first().fill('ccagent@ramaiahcare.com');
+    await page.locator('input[type="password"]').first().fill('CcRamaiah@2026');
+    await page.getByRole('button', { name: 'Sign in', exact: true }).click();
+
+    // Should land on Call Desk (/ for cc-agent role)
+    await expect(page).not.toHaveURL(/\/login/, { timeout: 20_000 });
+
+    // Sidebar should be visible
+    await expect(page.locator('aside').first()).toBeVisible({ timeout: 10_000 });
+
+    await page.context().storageState({ path: authFile });
+});