feat(initial): add comprehensive PDF to JPEG preview library with dual-environment support

- Add Node.js implementation using @push.rocks/smartpdf
- Add browser implementation with PDF.js and Web Workers
- Support configurable quality, dimensions, and page selection
- Include comprehensive TypeScript definitions and error handling
- Provide extensive test coverage for both environments
- Add download functionality and browser compatibility checking

changelog.md

@@ -0,0 +1,34 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [1.0.0] - 2024-08-03
+
+### Added
+- Initial release of @push.rocks/smartpreview
+- Dual environment support for Node.js and browsers
+- PDF to JPEG preview generation with configurable quality and dimensions
+- Web Worker-based processing for non-blocking browser operations
+- TypeScript-first design with comprehensive type definitions
+- Extensible architecture ready for additional formats
+- Comprehensive error handling with typed error system
+- Factory method pattern for easy instantiation
+- Browser compatibility checking utilities
+- File download functionality for web environments
+- Multi-page PDF preview support
+- Progress callback support for web environments
+- Complete test suite covering both environments
+
+### Features
+- **Node.js Implementation**: Uses @push.rocks/smartpdf for server-side PDF processing
+- **Browser Implementation**: PDF.js integration with Web Workers for client-side processing
+- **Configuration Options**: Quality (1-100), dimensions, page selection, and scaling
+- **Error Handling**: Detailed error types including PDF_CORRUPTED, PAGE_NOT_FOUND, WORKER_ERROR
+- **Cross-Platform**: Single API works in Node.js, browsers, and edge functions
+- **Type Safety**: Full TypeScript support prevents runtime errors
+- **Performance**: Optimized for high-volume production use
+
+[1.0.0]: https://code.foss.global/push.rocks/smartpreview/releases/tag/v1.0.0