fix(outdated): align with Composer's OutdatedCommand proxy

Composer's OutdatedCommand (isProxyCommand = true) just remaps options
and re-invokes `show --latest [--outdated]`; Mozart's outdated.rs was a
~700-line parallel reimplementation of show's outdated logic with its
own classifier, renderer, JSON shape, and platform predicate. Collapse
it into a thin proxy that builds a ShowArgs from OutdatedArgs and calls
show::execute, mirroring OutdatedCommand::execute field-for-field.

This restores show as the single source of truth for rendering, JSON
fields, --strict, and the mutual-exclusion checks. Surfaced gaps in
show.rs (--major-only/--minor-only/--patch-only filtering, --sort-by-age,
JSON enrichment with homepage/source/time/abandoned) are deferred per
the plan.

0 files changed, 0 insertions, 0 deletions