The `obikmer select` CLI no longer supports in-place index rewriting; the `--output` flag is now required, with benchmarks updated to use temporary directories for atomic replacement. Added `--dense` and `--force-copy` flags. Introduced `batch_presence_counts` to compute presence counts across multiple column groups in a single pass, eliminating redundant I/O. Refactored the aggregation pipeline to branch on layer content, applying the optimized batched counting for `Presence` layers. Enhanced the NUMA runner to catch worker panics, track them, and re-raise after thread join to prevent indefinite blocking.
Introduces a comprehensive documentation set covering theoretical foundations, CLI usage, installation, and system architecture. Adds MkDocs configuration and Makefile targets to generate, serve with live reload, and clean the documentation site. Includes citation styles and bibliography files for academic references.