feat(docs): Remove outdated service templates and enhance Vietnamese architecture documentation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/jest.config.ts

@@ -0,0 +1,40 @@
+import type { Config } from 'jest';
+
+const config: Config = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+  roots: ['<rootDir>/src'],
+  testMatch: [
+    '**/__tests__/**/*.test.ts',
+    '**/__tests__/**/*.spec.ts',
+    '**/__tests__/**/*.e2e.ts',
+    '**/?(*.)+(spec|test).ts'
+  ],
+  collectCoverageFrom: [
+    'src/**/*.ts',
+    '!src/**/*.d.ts',
+    '!src/main.ts',
+    '!src/config/**/*.ts',
+    '!src/**/*.config.ts'
+  ],
+  coverageDirectory: 'coverage',
+  coverageReporters: ['text', 'lcov', 'html'],
+  coverageThreshold: {
+    global: {
+      branches: 70,
+      functions: 70,
+      lines: 70,
+      statements: 70
+    }
+  },
+  setupFilesAfterEnv: ['<rootDir>/src/__tests__/setupTests.ts'],
+  testTimeout: 10000,
+  // EN: Clear mocks between tests to avoid state leakage
+  // VI: Xóa mocks giữa các test để tránh rò rỉ state
+  clearMocks: true,
+  // EN: Reset modules between tests for isolation
+  // VI: Reset modules giữa các test để cô lập
+  resetModules: true
+};
+
+export default config;