Sequential reorder uses a temporary negative id slot plus range shifts so UNIQUE constraints on programs, courses, modules, and lessons stay valid; replaces module pairwise swap-only behavior.
Co-authored-by: Cursor <cursoragent@cursor.com>
Expose has_practice booleans for LMS and pre-exam hierarchy entities, wire SQL/repository mappings, and regenerate SQLC/Swagger artifacts. Also update the Resend sender display name for outbound emails.
Co-authored-by: Cursor <cursoragent@cursor.com>
When updating a module sort_order to an occupied position in the same course, perform an atomic swap in a transaction instead of failing with a unique constraint error.
Made-with: Cursor
