🚀 New Features

• ✨ Export grouped and imported GIF animations with configurable frame intervals and repeat counts.
• ✨ Export animated image groups as APNG with per-frame timing and repeat support.
• ✨ Select and export individual frames from imported GIF and APNG files.
• ✨ Show frame thumbnails for imported GIF/APNG animations and grouped image sequences.
• ✨ Add Cmd/Ctrl+A list selection, focused Up/Down navigation, and consistent Toggle controls for playback settings.
• ✨ Add workspace-wide numeric sequence grouping across mixed filename digit widths.
• ✨ Add indexed-image export parameter panels for LVGL, MIRX, and PNG workflows.

🎨 Improvements

• 🎨 Localize playback labels and frame information in the viewer.
• 🎨 Synchronize converter animation intervals with preview playback.
• 🎨 Refresh README branding, badges, navigation, and viewer snapshot presentation.

🐛 Fixes

• 🐛 Use a WASM-safe monotonic animation clock instead of std::time::Instant.
• 🛡️ Add GIF/APNG animation round-trip coverage and preserve frame timing during export.
• 🛡️ Add LVGL v9 raw-block LZ4 compression and decompression using lz4_flex.
• 🛡️ Validate compressed sizes and truncated LVGL headers without panicking.
• 🔄 Convert indexed LVGL inputs through their RGBA view when writing common output formats.