Just a captured log table. A small mu-plugin listens for WP_CLI::add_hook('before_invoke') and 'after_invoke', then writes a row with command, exit_code, duration and host into a dedicated table such as wp_wpcli_runs. No change to existing scripts.

No. The hook writes a single row at the end of each command, which is a single INSERT. WP-CLI commands typically dominate the budget themselves; the tail-end log write is invisible in comparison.

Yes. Add a filter for exit_code != 0 and the whole table narrows to the runs that returned a non-zero status. Combine with a date range filter for a per-incident triage view.

Yes if the captured table includes a host column. Add a filter for host = staging-01 (or any host name) to scope every column to that environment. Useful on multi-environment setups.

Yes. If the shim writes rows from every environment into the same table (or replicates them centrally), the table view shows runs from every box. Group by host on a saved view to compare environments.

Yes. Queries hit indexed columns on the captured table (started_at, exit_code, host). Filters compose into one query and pagination keeps the row count bounded, even with months of WP-CLI history.

Yes. Any filtered set can be exported to CSV with the visible columns. A list of failed deploys, slow commands or per-host activity can land in a project tracker or a post-mortem doc in one step.

No. WP-CLI stays the command-line interface. SleekView reads the captured run log and renders it as a sortable, filterable table. WP-CLI commands keep being authored, scripted and triggered exactly as before.