Add comprehensive Home Assistant WebSocket and API tests

- Created detailed test suite for Home Assistant WebSocket client
- Implemented tests for WebSocket connection, authentication, and error handling
- Added comprehensive test coverage for HassInstanceImpl API methods
- Mocked WebSocket and fetch to simulate various connection scenarios
- Covered authentication, state retrieval, service calls, and environment configuration
- Improved test infrastructure for Home Assistant integration

jest.config.cjs

@@ -5,29 +5,30 @@ module.exports = {
     extensionsToTreatAsEsm: ['.ts'],
     moduleNameMapper: {
         '^(\\.{1,2}/.*)\\.js$': '$1',
-        '#(.*)': '<rootDir>/node_modules/$1',
         '^(\\.{1,2}/.*)\\.ts$': '$1',
-        '^chalk$': 'chalk',
-        '#ansi-styles': 'ansi-styles',
-        '#supports-color': 'supports-color'
+        '^chalk$': '<rootDir>/node_modules/chalk/source/index.js',
+        '#ansi-styles': '<rootDir>/node_modules/ansi-styles/index.js',
+        '#supports-color': '<rootDir>/node_modules/supports-color/index.js'
     },
     transform: {
         '^.+\\.tsx?$': [
             'ts-jest',
             {
                 useESM: true,
+                tsconfig: 'tsconfig.json'
             },
         ],
     },
     transformIgnorePatterns: [
-        'node_modules/(?!(@digital-alchemy|chalk|ansi-styles|supports-color)/)'
+        'node_modules/(?!(@digital-alchemy|chalk|ansi-styles|supports-color)/.*)'
     ],
     resolver: '<rootDir>/jest-resolver.cjs',
     setupFilesAfterEnv: ['<rootDir>/jest.setup.ts'],
     testMatch: [
         '**/__tests__/helpers.test.ts',
         '**/__tests__/schemas/devices.test.ts',
-        '**/__tests__/context/index.test.ts'
+        '**/__tests__/context/index.test.ts',
+        '**/__tests__/hass/index.test.ts'
     ],
     globals: {
         'ts-jest': {