Canonical feedback template for every learner answer in the Fluent system — celebrate correct parts, correct mistakes with category and brief explanation, show the full correct version, score out of 10, and classify severity (🔴 critical / 🟡 moderate / 🟢 minor). Use in every practice session (fluent-writing, fluent-vocab, fluent-speaking, fluent-reading, fluent-review) immediately after the learner submits an answer.
