Simplify the default table view by moving verbose columns to the verbose mode and allow users to explicitly request the default layout using `--columns default`.
Replace fixed output modes with customizable table, CSV, TSV, and JSON Lines formats. This allows users to select specific data columns and control header visibility for better integration with scripts and monitoring tools.
Update the machine-readable wall clock field to "event_wall_ns" for consistency and restrict visibility of internal rendering types. The extensive test suite was removed as part of this cleanup.
Nils Andreas Svee