Add comprehensive unit tests for homepage components and utilities

- Introduced unit tests for homepage components: `QuickStartCode`, `Header`, `DemoCredentialsModal`, `AnimatedTerminal`, `CTASection`, and `StatsSection`.
- Added utility tests for `chart-colors` including opacity, palettes, and gradient validation.
- Mocked dependencies (`framer-motion`, `react-syntax-highlighter`, `DemoCredentialsModal`) for isolated testing.
- Verified accessibility features, animations, and interactive behaviors across components.

frontend/jest.config.js

@@ -16,6 +16,9 @@ const customJestConfig = {
     '<rootDir>/tests/**/*.test.ts',
     '<rootDir>/tests/**/*.test.tsx',
   ],
+  transformIgnorePatterns: [
+    'node_modules/(?!(react-syntax-highlighter|refractor|hastscript|hast-.*|unist-.*|property-information|space-separated-tokens|comma-separated-tokens|web-namespaces)/)',
+  ],
   collectCoverageFrom: [
     'src/**/*.{js,jsx,ts,tsx}',
     '!src/**/*.d.ts',