chore: sync all local changes and new files

- Update next.config.ts
- Add netlify.toml, Docker configs, e2e tests
- Add env templates, docs (README, ROADMAP, TODO)
- Add vitest/playwright test configs
- Add component and lib tests
- Add install script, portainer env template
- Update .gitignore (tsbuildinfo, deno.lock, dev.db)

e2e/auth-flow.spec.ts

@@ -0,0 +1,38 @@
+import { test, expect } from '@playwright/test';
+
+test.describe('Authentication Flow', () => {
+  test('should handle login, registration, and logout', async ({ page }) => {
+    // Visit site → home page loads → see navbar
+    await page.goto('/');
+    await expect(page.locator('nav')).toBeVisible();
+
+    // Click Login → see login form
+    await page.click('text=Login');
+    await expect(page.locator('form')).toBeVisible();
+
+    // Try invalid login → see error message
+    await page.fill('input[type="email"]', 'invalid@example.com');
+    await page.fill('input[type="password"]', 'wrongpassword');
+    await page.click('button[type="submit"]');
+    await expect(page.locator('text=Invalid credentials')).toBeVisible();
+
+    // Navigate to registration (assuming a link exists on login page)
+    await page.click('text=Register');
+    
+    // Fill registration form → submit → redirect to home
+    await page.fill('input[name="name"]', 'Test User');
+    await page.fill('input[name="email"]', 'newuser@example.com');
+    await page.fill('input[name="password"]', 'securepassword123');
+    await page.click('button[type="submit"]');
+    
+    // Check redirect and authentication state
+    await expect(page).toHaveURL('/');
+    // See user menu or similar in navbar when authenticated
+    await expect(page.locator('nav')).toContainText('Logout'); 
+
+    // Click logout → redirect to home → see login button
+    await page.click('text=Logout');
+    await expect(page).toHaveURL('/');
+    await expect(page.locator('text=Login')).toBeVisible();
+  });
+});