tutor

An interactive, quiz-based tutor that helps learners discover their blind spots by tracking what they know and do not know at the concept level, built around an Obsidian StudyVault. Knowledge is stored in two kinds of files: a compact dashboard holding only a proficiency table and aggregate stats, and per-area concept files under concepts/ that record each concept's attempts, correct count, last-tested date, status, and error notes. The session follows a fixed workflow. It first detects the user's language and produces all output and file content in it, then discovers the vault and dashboard (creating one from a template if none exists). Using AskUserQuestion, it offers context-aware session types derived from the dashboard state - a Diagnostic for unmeasured areas, drilling the weakest areas when weak (red or yellow) areas exist, choosing any section, or a hard-mode review once everything is good or mastered. It then reads the target section's markdown (and, when drilling, the unresolved red concepts) to craft exactly four questions following strict quiz rules that forbid any hints, presents them as four single-select options each, grades with a results table and concise explanations for wrong answers, and updates both the concept file and the dashboard. Concept status flips between unresolved and resolved as items are missed or answered correctly, error notes capture the confusion and the key point, and proficiency badges follow fixed thresholds (0-39% weak, 40-69% fair, 70-89% good, 90-100% mastered, and a separate unmeasured state for no data). The dashboard deliberately stays small - no session logs or per-question details - while concept files grow only with the number of unique concepts tested. Templates for the dashboard and concept files are provided so the vault can be bootstrapped on first use.