feat: initial commit — tcb_devportal Next.js app

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

jest.setup.js

@@ -0,0 +1,52 @@
+/* eslint-disable @typescript-eslint/no-require-imports -- Jest setup runs in Node with CommonJS */
+require('@testing-library/jest-dom')
+
+process.env.NEXT_PUBLIC_BACK_END_DOMAIN =
+  process.env.NEXT_PUBLIC_BACK_END_DOMAIN || 'http://localhost/api/v1'
+process.env.NEXT_PUBLIC_TIME_OUT_API =
+  process.env.NEXT_PUBLIC_TIME_OUT_API || '60000'
+
+if (
+  (typeof globalThis.crypto === 'undefined' ||
+    typeof globalThis.crypto.randomUUID !== 'function') &&
+  typeof require('crypto').randomUUID === 'function'
+) {
+  const nodeCrypto = require('crypto')
+  globalThis.crypto = globalThis.crypto || {}
+  globalThis.crypto.randomUUID = nodeCrypto.randomUUID.bind(nodeCrypto)
+}
+
+const mockLocalStorage = {
+  getItem: jest.fn(),
+  setItem: jest.fn(),
+  removeItem: jest.fn(),
+  clear: jest.fn(),
+}
+global.localStorage = mockLocalStorage
+if (typeof window !== 'undefined') {
+  window.localStorage = mockLocalStorage
+}
+
+class MockResizeObserver {
+  observe = jest.fn()
+  unobserve = jest.fn()
+  disconnect = jest.fn()
+}
+
+class MockBroadcastChannel {
+  postMessage = jest.fn()
+  close = jest.fn()
+  onmessage = null
+}
+
+global.ResizeObserver = global.ResizeObserver || MockResizeObserver
+global.BroadcastChannel = global.BroadcastChannel || MockBroadcastChannel
+
+if (typeof window !== 'undefined') {
+  window.ResizeObserver = window.ResizeObserver || MockResizeObserver
+  window.BroadcastChannel = window.BroadcastChannel || MockBroadcastChannel
+}
+
+if (!Element.prototype.scrollIntoView) {
+  Element.prototype.scrollIntoView = jest.fn()
+}