test: Cypress en Playwright e2e-suites voor login, agenda, cortex en verpleegrapportage

Configs voor beide runners, login via session caching, AI-chat
mocks (SSE) voor deterministische Cortex-tests. Supabase local
config toegevoegd. Auth-state en reports zijn gitignored.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

cypress.config.ts

@@ -0,0 +1,25 @@
+import { defineConfig } from 'cypress';
+import { config } from 'dotenv';
+
+config({ path: '.env.local' });
+
+export default defineConfig({
+  e2e: {
+    baseUrl: 'http://localhost:3000',
+    specPattern: 'tests/cypress/**/*.cy.ts',
+    supportFile: 'tests/cypress/support/e2e.ts',
+    videosFolder: 'tests/cypress/videos',
+    screenshotsFolder: 'tests/cypress/screenshots',
+    viewportWidth: 1280,
+    viewportHeight: 800,
+    video: true,
+    screenshotOnRunFailure: true,
+    defaultCommandTimeout: 10000,
+    pageLoadTimeout: 30000,
+    experimentalModifyObstructiveThirdPartyCode: false,
+  },
+  env: {
+    TEST_EMAIL: process.env.TEST_EMAIL,
+    TEST_PASSWORD: process.env.TEST_PASSWORD,
+  },
+});