Split MisData table into MisData_Curr (Status='Current') and
MisData_Hist (Status='BackLevel') following existing archival pattern.
- Add MisData_Curr and MisData_Hist table scripts
- Create MisData view (UNION ALL) for backward compatibility
- Update production and DEV pipeline configurations
- Update unit tests for new table count (22 tables)
- Update database documentation
Joseph Doherty