feat(dictation): word-level dictation scoring with tolerant normalization (#8)

feat(asr): faster-whisper ASR client behind the ASRClient Protocol (#7)

feat(reading): add cloze (fill-in-the-blank) as a second exercise type (#5)

feat(ml): ONNX int8 export and torch-free CPU inference service (#4)

feat(ml): CEFR dataset builder and XLM-R training pipeline with MLflow tracking (#2)

feat: M0 walking skeleton (app, service protocols, CI/CD, Space deploy)