Update planning docs and audit tables to reflect the removal of
`lore show`:
- CLI_AUDIT.md: remove show row, renumber remaining entries
- plan-expose-discussion-ids.md: replace `show` with
`issues <IID>`/`mrs <IID>`
- plan-expose-discussion-ids.feedback-3.md: replace `show` with
"detail views"
- work-item-status-graphql.md: update example commands from
`lore show issue 123` to `lore issues 123`