476c7a6394
Introduces a metadata-driven filtering system for the rebuild command, classifying genomes into ingroup and outgroup categories using exact, inequality, and hierarchical path predicates. Implements a GroupQuorumFilter to enforce configurable presence thresholds and fraction constraints per group. Refactors the command to replace global quorum filters with this unified approach, converts the presence flag to a threshold parameter, and adds corresponding documentation and MkDocs navigation.