feat: initial commit — tcb_devportal Next.js app

Includes Helm chart (tcb-devportal), Jenkinsfile with homelab CI pipeline,
and Next.js app source.

jest.config.js

@@ -0,0 +1,28 @@
+/* eslint-disable @typescript-eslint/no-require-imports */
+const nextJest = require('next/jest')
+
+const createJestConfig = (nextJest.default || nextJest)({ dir: './' })
+
+const customJestConfig = {
+  setupFilesAfterEnv: ['<rootDir>/jest.setup.js'],
+  testEnvironment: 'jest-environment-jsdom',
+  moduleNameMapper: {
+    '^@/(.*)$': '<rootDir>/src/$1',
+  },
+  transformIgnorePatterns: [
+    '/node_modules/(?!next-intl/.*)',
+  ],
+  testMatch: [
+    '**/_tests/**/*.test.ts',
+    '**/_tests/**/*.test.tsx',
+    '**/_tests_/**/*.test.ts',
+    '**/_tests_/**/*.test.tsx',
+  ],
+  collectCoverageFrom: [
+    'src/**/*.{ts,tsx}',
+    '!src/**/*.d.ts',
+    '!src/**/*.stories.tsx',
+  ],
+}
+
+module.exports = createJestConfig(customJestConfig)