Expand exact roster rank codes (rank_final: 2nd Lt -> Second Lieutenant; class_rank: 2nd Lt -> Second Lieutenant)
Remove NG / negative research-note markers; keep other roster facts
 
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* OB Class 3
* OB Class 3
* Also Class 4 Section 17
* Also Class 4 Section 17
* Nongrad
* also Class 10
* also Class 10