The search layer's DSL helpers are used by resource and concept queries, but several option-handling bugs…

The search layer's DSL helpers are used by resource and concept queries, but several option-handling bugs…: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). Query.add filter must accept only the boolean operators and and or (case-sensitive); an invalid operator is a…