chore: initialize project repository with core extension files

- Add .gitignore to exclude node_modules, dist, logs, and system files
- Add comprehensive project documentation including README, deployment guide, and development setup
- Add .kiro project specifications for amazon-product-bar-extension, appwrite-cloud-storage, appwrite-userid-repair, blacklist-feature, and enhanced-item-management
- Add .kiro steering documents for product, structure, styling, and tech guidelines
- Add VSCode settings configuration for consistent development environment
- Add manifest.json and babel/vite configuration for extension build setup
- Add complete source code implementation including AppWrite integration, storage managers, UI components, and services
- Add comprehensive test suite with Jest configuration and 30+ test files covering all major modules
- Add test HTML files for integration testing and validation
- Add coverage reports and build validation scripts
- Add AppWrite setup and repair documentation for database schema management
- Add migration guides and responsive accessibility implementation documentation
- Establish foundation for Amazon product bar extension with full feature set including blacklist management, enhanced item workflows, and real-time synchronization

jest.config.js

@@ -0,0 +1,12 @@
+export default {
+  testEnvironment: 'jsdom',
+  transform: {
+    '^.+\\.jsx?$': 'babel-jest',
+  },
+  moduleFileExtensions: ['js', 'jsx'],
+  testMatch: ['**/__tests__/**/*.test.js', '**/*.test.js'],
+  setupFilesAfterEnv: ['<rootDir>/jest.setup.js'],
+  moduleNameMapper: {
+    '\\.(css|less|scss|sass)$': 'identity-obj-proxy'
+  }
+};