feat(core): Initial release: add SmartFfmpeg fluent builder API with in-memory streams, progress tracking, and bundled ffmpeg/ffprobe

changelog.md

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+# Changelog
+
+## 2025-12-11 - 1.1.0 - feat(core)
+Initial release: add SmartFfmpeg fluent builder API with in-memory streams, progress tracking, and bundled ffmpeg/ffprobe
+
+- Introduce SmartFfmpeg main class and FfmpegCommand fluent builder API for chainable ffmpeg commands
+- Support in-memory inputs/outputs: Buffer, Uint8Array, Node and Web Readable/Writable streams (pipe(), toBuffer(), toStream())
+- Progress reporting via onProgress callbacks and ffmpeg progress parsing
+- Bundled binaries using ffmpeg-static and ffprobe-static (paths exposed via plugins)
+- Legacy API preserved (convert, convertWithProgress, getMediaInfo, generateThumbnails, screenshot, concat, addAudio, etc.)
+- Utilities for probing encoders/decoders/formats and helper methods (screenshot, thumbnails, GIF conversion, concat)
+
+## 2025-12-11 - 1.0.0 - initial release
+Initial release of the project.
+
+- Repository initialized.
+- Basic project scaffold and initial files added to establish the foundation for future development.