Ferrous v1.0.0

Added

• Initial stable release of Ferrous Reader.
• Hybrid architecture combining Flutter frontend with Rust backend for high performance.
• Fast, thread-safe PDF rendering using pdfium-render.
• Native EPUB rendering with customizable typography using epubx and flutter_html.
• Support for CBZ/ZIP comic book archives.
• High-speed device storage scanning powered by Rust's walkdir.
• Modern Material 3 user interface.

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