Add normalizeLessonSortOrder method to ensure sequential 1-based sort_order values. Update reorderLesson to normalize before reordering and validate new position against lesson count. Call normalization after lesson deletion to fill gaps in remaining lessons. |
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| .vscode | ||
| .windsurf/rules | ||
| Backend | ||
| docs | ||
| Frontend-Learner | ||
| frontend_management | ||
| .DS_Store | ||
| .gitignore | ||