First real Review Queue stage. Update submission status, add reviewer notes, and delete test submissions. No public movie publishing yet.
`sb_submissions`
pending / approved / rejected / changes requested
Typed confirmation removes one submission row.
No `sb_movies` write in this stage.
Type `DELETE SUBMISSION` to remove one selected row.
This page only updates submission rows.
Publishing to `sb_movies` comes later after testing.
Designed so test submissions do not build up.
Review status actions affect only this `sb_submissions` row.