test: add Vitest API tests for tasks routes

- Tests for GET, POST, PATCH, DELETE task routes
- Tests for dependency cycle detection
- Jest config with SWC transform and module aliases

apps/web/jest.config.js

@@ -0,0 +1,16 @@
+/** @type {import('jest').Config} */
+const config = {
+  testEnvironment: 'node',
+  transform: {
+    '^.+\\.(t|j)sx?$': ['@swc/jest'],
+  },
+  moduleNameMapper: {
+    '^@/(.*)$': '<rootDir>/$1',
+    '^@project-e/db$': '<rootDir>/../../packages/db/src',
+    '^@project-e/shared$': '<rootDir>/../../packages/shared/src',
+  },
+  testMatch: ['**/__tests__/**/*.test.(ts|tsx|js)'],
+  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json'],
+};
+
+module.exports = config;