feat(docs): Remove outdated service templates and enhance Vietnamese architecture documentation

- Deleted obsolete service architecture templates in both English and Vietnamese to streamline content.
- Updated the Vietnamese architecture documentation with improved Mermaid diagrams for better visual clarity.
- Enhanced color coding in diagrams to improve readability and consistency across documentation.
- Added a new section detailing visual indicators for better understanding of architecture components.

services/_template_nodejs/src/__tests__/setupTests.ts

@@ -0,0 +1,158 @@
+import { jest } from '@jest/globals';
+
+// EN: Extend global types for test utilities
+// VI: Mở rộng global types cho test utilities
+declare global {
+  var testUtils: {
+    createMockReq: (overrides?: any) => any;
+    createMockRes: () => any;
+    createMockNext: () => jest.Mock;
+  };
+}
+
+// EN: Mock environment variables for tests
+// VI: Mock biến môi trường cho tests
+process.env.NODE_ENV = 'test';
+process.env.DATABASE_URL = 'postgresql://test:test@localhost:5432/test_db';
+process.env.REDIS_URL = 'redis://localhost:6379/1';
+process.env.PORT = '3001';
+process.env.SERVICE_NAME = 'test-service';
+process.env.API_VERSION = 'v1';
+
+// EN: Mock external services to avoid real network calls
+// VI: Mock các service bên ngoài để tránh gọi mạng thật
+jest.mock('@goodgo/logger', () => ({
+  logger: {
+    info: jest.fn(),
+    error: jest.fn(),
+    warn: jest.fn(),
+    debug: jest.fn(),
+  },
+}));
+
+// EN: Auth SDK mocking is handled in individual test files
+// VI: Auth SDK mocking được xử lý trong từng test file riêng biệt
+
+jest.mock('@goodgo/tracing', () => ({
+  initTracing: jest.fn(),
+}));
+
+// EN: Mock database client to avoid real DB connections in unit tests
+// VI: Mock database client để tránh kết nối DB thật trong unit tests
+jest.mock('../config/database.config', () => ({
+  connectDatabase: jest.fn(),
+  prisma: {
+    $queryRaw: jest.fn(),
+    $disconnect: jest.fn(),
+    $connect: jest.fn(),
+    feature: {
+      create: jest.fn(),
+      findMany: jest.fn(),
+      findUnique: jest.fn(),
+      update: jest.fn(),
+      delete: jest.fn(),
+    },
+  },
+}));
+
+// EN: Set up default mock implementations
+// VI: Thiết lập implementations mock mặc định
+const { prisma } = require('../config/database.config');
+
+// EN: Mock successful feature creation
+// VI: Mock việc tạo feature thành công
+prisma.feature.create.mockResolvedValue({
+  id: 'test-feature-id',
+  name: 'test-feature',
+  title: 'Test Feature',
+  description: 'Test description',
+  config: {},
+  enabled: true,
+  version: '1.0.0',
+  tags: [],
+  createdAt: new Date(),
+  updatedAt: new Date(),
+});
+
+// EN: Mock successful feature queries
+// VI: Mock việc query feature thành công
+prisma.feature.findMany.mockResolvedValue([]);
+prisma.feature.findUnique.mockResolvedValue(null);
+prisma.feature.update.mockResolvedValue({
+  id: 'test-feature-id',
+  name: 'test-feature',
+  title: 'Updated Feature',
+  description: 'Updated description',
+  config: {},
+  enabled: true,
+  version: '1.0.0',
+  tags: [],
+  createdAt: new Date(),
+  updatedAt: new Date(),
+});
+prisma.feature.delete.mockResolvedValue({});
+
+// EN: Mock Redis client to avoid real Redis connections
+// VI: Mock Redis client để tránh kết nối Redis thật
+jest.mock('../config/redis.config', () => ({
+  getRedisClient: jest.fn().mockReturnValue({
+    call: jest.fn(),
+    connect: jest.fn(),
+    disconnect: jest.fn(),
+  }),
+}));
+
+// EN: Mock Prometheus registry to avoid global state issues in tests
+// VI: Mock Prometheus registry để tránh vấn đề global state trong tests
+jest.mock('prom-client', () => {
+  const mockRegistry = {
+    registerMetric: jest.fn(),
+    getMetricsAsJSON: jest.fn().mockReturnValue({}),
+    metrics: jest.fn().mockReturnValue(''),
+  };
+
+  return {
+    Registry: jest.fn().mockImplementation(() => mockRegistry),
+    register: mockRegistry,
+    collectDefaultMetrics: jest.fn(),
+    Gauge: jest.fn().mockImplementation(() => ({
+      set: jest.fn(),
+      inc: jest.fn(),
+      dec: jest.fn(),
+    })),
+    Counter: jest.fn().mockImplementation(() => ({
+      inc: jest.fn(),
+      add: jest.fn(),
+    })),
+    Histogram: jest.fn().mockImplementation(() => ({
+      observe: jest.fn(),
+      startTimer: jest.fn().mockReturnValue(jest.fn()),
+    })),
+  };
+});
+
+// EN: Global test utilities
+// VI: Utilities test toàn cục
+global.testUtils = {
+  // EN: Helper to create mock request/response objects
+  // VI: Helper để tạo mock request/response objects
+  createMockReq: (overrides = {}) => ({
+    body: {},
+    params: {},
+    query: {},
+    headers: {},
+    ...overrides,
+  }),
+
+  createMockRes: () => {
+    const res: any = {};
+    res.status = jest.fn().mockReturnValue(res);
+    res.json = jest.fn().mockReturnValue(res);
+    res.send = jest.fn().mockReturnValue(res);
+    return res;
+  },
+
+  // EN: Helper to create mock next function
+  // VI: Helper để tạo mock next function
+  createMockNext: () => jest.fn(),
+};