refactor: migrate to monorepo structure with Docker, PocketBase, and e2e tests

- Reorganize into apps/, packages/, docs/, e2e/, pocketbase/ directories
- Add Dockerfiles for web, worker, and PocketBase services
- Add docker-compose.yml for local orchestration
- Add turbo.json for monorepo task management
- Add Playwright e2e test infrastructure
- Add PocketBase backend with migrations
- Remove Vite/Next.js/ESLint/PostCSS config files
- Update package.json with workspace dependencies
- Add .env.example and .dockerignore

e2e/helpers/fixtures.ts

@@ -0,0 +1,49 @@
+import type { Page } from '@playwright/test';
+
+/** Test user credentials – matches PocketBase seed data or test fixtures. */
+export const TEST_USER = {
+  email: 'test@example.com',
+  password: 'testpassword123',
+};
+
+/** Fake credentials that should always fail login. */
+export const INVALID_USER = {
+  email: 'nonexistent@example.com',
+  password: 'wrongpassword',
+};
+
+/** Unique timestamp suffix to avoid collisions in concurrent test runs. */
+const ts = Date.now();
+
+export const testTasks = {
+  title: `E2E Test Task ${ts}`,
+  editedTitle: `E2E Test Task Edited ${ts}`,
+  description: 'This task was created by the E2E test suite.',
+  domain: 'personal',
+  priority: 'high' as const,
+};
+
+export const testHabits = {
+  name: `E2E Test Habit ${ts}`,
+  description: 'A habit created by the E2E test suite.',
+};
+
+export const testProjects = {
+  name: `E2E Test Project ${ts}`,
+  description: 'A project created by the E2E test suite.',
+};
+
+export const testNotes = {
+  title: `E2E Test Note ${ts}`,
+  content: 'This note was created by the E2E test suite.',
+  domain: 'personal',
+};
+
+export const testReports = {
+  title: `E2E Test Report ${ts}`,
+  content: 'This report was created by the E2E test suite.',
+};
+
+export const testDomains = {
+  name: `e2e-domain-${ts}`,
+};