check-answer

name	check-answer
description	Check a free-text answer against the correct answer stored in an Obsidian concept note. Use when: 'check my answer for [[concept]]', 'was I right about X', 'grade my answer', 'did I get it'.

Check Answer — Retrieval Practice Grading

Grades a free-text answer against the stored correct answer for a concept.

Instructions

1. Parse the concept ID from the user's message (e.g. [[express-middleware]] → express-middleware)
2. Read the concept note from the Obsidian vault:
   • Config: ~/.learn-while-code/config.json → obsidian_vault + obsidian_folder
   • Note path: {obsidian_vault}/{obsidian_folder}/{concept-id}.md
3. Extract quiz_answer from the YAML frontmatter
4. Compare the user's answer to quiz_answer:
   • Core idea correct (4-5/5): User captured the main WHY, even if phrasing differs
   • Partial (2-3/5): User got the direction but missed the key mechanism or trade-off
   • Wrong (1/5): User described what it does, not why — or got it backwards
5. Give feedback:
   • What they got right
   • What they missed or could sharpen
   • The correct answer (1-2 sentences)
6. Update the concept's SM-2 score: call sm2Update(concept, quality) and write back to concepts.jsonl
7. Append to quiz-history.jsonl

Output Format

## Answer Check: [Concept Name]

**Your answer:** [quote their answer]
**Score:** 4/5

✅ You got the core idea — [what they nailed]
⚠️ You missed — [what was absent]

**Correct answer:** [quiz_answer from frontmatter]

SM-2 updated — next review: [date]

Gotchas

• Be generous: if they got the core WHY right, score 4+. Don't penalize for missing edge cases.
• If the concept note doesn't exist yet, say "No note found for [[concept-id]] — sync Obsidian first with /sync-obsidian."
• If quiz_answer is empty in frontmatter, fall back to the explanation field in patterns.jsonl.