feat(stellar): add payment link generation and consumption

.gitignore

@@ -4,3 +4,5 @@ dist/
 .env.*
 reference/
 *.local
+playwright-report/
+test-results/

e2e/payment-link.spec.ts

@@ -0,0 +1,73 @@
+import { test, expect } from '@playwright/test';
+
+test.describe('Stellar Payment Link', () => {
+  test.beforeEach(async ({ context }) => {
+    // Mock Freighter API so the app thinks a wallet is installed and connected
+    await context.addInitScript(() => {
+      (window as any).freighter = {
+        isConnected: () => Promise.resolve({ isConnected: true }),
+        getAddress: () => Promise.resolve({ address: 'GATTESTADDRESSYOURSFREIGHTER123456789' }),
+        requestAccess: () => Promise.resolve(),
+      };
+      (window as any).freighterApi = (window as any).freighter; // Some versions use freighterApi
+    });
+  });
+
+  test('should generate a link, pre-fill the send form, and disable inputs', async ({ page, context }) => {
+    // 1. Go to Receive page
+    await page.goto('/receive');
+    await page.locator('select').selectOption('stellar');
+
+    // 2. Open generated link in a new context
+    const testUrl = '/pay?to=st:xlm:test_meta_address&amount=15.5&memo=TestMemo&exp=' + (Math.floor(Date.now() / 1000) + 3600);
+
+    const newPage = await context.newPage();
+    await newPage.goto(testUrl);
+
+    // Switch to Stellar network
+    await newPage.locator('select').selectOption('stellar');
+
+    // Click Connect Freighter
+    await newPage.click('text=Connect Freighter');
+
+    // 3. Verify Send page pre-filled inputs
+    const recipientInput = newPage.locator('input[placeholder="st:xlm:..."]');
+    await expect(recipientInput).toHaveValue('st:xlm:test_meta_address');
+    await expect(recipientInput).toBeDisabled();
+
+    const amountInput = newPage.locator('input[placeholder="0.0"]');
+    await expect(amountInput).toHaveValue('15.5');
+    await expect(amountInput).toBeDisabled();
+
+    const memoInput = newPage.locator('input[placeholder="e.g. Coffee"]');
+    await expect(memoInput).toHaveValue('TestMemo');
+    await expect(memoInput).toBeDisabled();
+  });
+
+  test('should show expiration error and disable submit for expired link', async ({ page }) => {
+    const expiredExp = Math.floor(Date.now() / 1000) - 3600; // 1 hour ago
+    const testUrl = `/pay?to=st:xlm:test_meta_address&amount=10&exp=${expiredExp}`;
+
+    await page.goto(testUrl);
+
+    // Switch to Stellar network
+    await page.locator('select').selectOption('stellar');
+
+    // Click Connect Freighter
+    await page.click('text=Connect Freighter');
+
+    // Check for error message
+    const errorText = page.locator('text=This payment link has expired');
+    await expect(errorText).toBeVisible();
+
+    // The recipient and amount should still be pre-filled and disabled
+    const recipientInput = page.locator('input[placeholder="st:xlm:..."]');
+    await expect(recipientInput).toHaveValue('st:xlm:test_meta_address');
+    await expect(recipientInput).toBeDisabled();
+
+    // Verify submit button is disabled
+    const submitButton = page.locator('button:has-text("Send Privately")');
+    // Button might also say "Confirm in wallet..." but the text says "Send Privately" initially
+    await expect(submitButton).toBeDisabled();
+  });
+});

package.json

@@ -28,6 +28,7 @@
     "@wraith-protocol/sdk": "^1.4.5",
     "bs58": "^6.0.0",
     "buffer": "^6.0.3",
+    "qrcode.react": "^4.2.0",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
     "react-router-dom": "^7.6.0",
@@ -37,6 +38,8 @@
   "devDependencies": {
     "@commitlint/cli": "^19.0.0",
     "@commitlint/config-conventional": "^19.0.0",
+    "@playwright/test": "^1.60.0",
+    "@types/node": "^25.9.1",
     "@types/react": "^19.0.0",
     "@types/react-dom": "^19.0.0",
     "@vitejs/plugin-react": "^4.5.0",

playwright.config.ts

@@ -0,0 +1,25 @@
+import { defineConfig, devices } from '@playwright/test';
+
+export default defineConfig({
+  testDir: './e2e',
+  fullyParallel: true,
+  forbidOnly: !!process.env.CI,
+  retries: process.env.CI ? 2 : 0,
+  workers: process.env.CI ? 1 : undefined,
+  reporter: 'html',
+  use: {
+    baseURL: 'http://localhost:5173',
+    trace: 'on-first-retry',
+  },
+  projects: [
+    {
+      name: 'chromium',
+      use: { ...devices['Desktop Chrome'] },
+    },
+  ],
+  webServer: {
+    command: 'npm run dev',
+    url: 'http://localhost:5173',
+    reuseExistingServer: !process.env.CI,
+  },
+});