Desktop learning console built in Rust with egui. Pluggable study
modules — each cartridge ships its own content, questions, fonts, and
language config; drop a new cartridge folder into cartridges/
and restart, no recompile needed. Bundled cartridges: Colombian
Nationality (Spanish) and Japanese 100 (Japanese / English).
TTS narration via Windows SAPI/WinRT voices with automatic language switching per content block; speed control 0.25× to 2.0×; manual / auto / loop / next playback modes. Markdown-rendered content with sidebar navigation and per-section progress tracking.