Library overview

lang_tools is organised around five orthogonal layers. Each one is documented in its own page below.

• Language - presets, normalisation, keyboard layouts.
• Words - the canonical Word model and ingestion pipelines (Wiktionary, CSV, static lists).
• Progress - per-user progress tracking and weighted selection.
• Exercises - the five shared exercise mechanics.
• LLM chains - structured chains for translation, conversation, tutoring, topic suggestion, paragraph splitting, greetings, and word generation.

The implementation follows the plan documents under scratch_space/vibes/10-language-overview/ (00 through 06, excluding the unified webapp).