The last selection still living in a global. `?folder=sent` is now the state,
the folder pills are links, and the open email carries it — a bare
`/email/:id` would have dropped the query string and snapped the list back to
inbox, so the row links and the arrow-key navigate pass it through.
The auto-switch to "all" when the inbox is empty writes with `replace`: it is
the app correcting its own default, not a place you chose to be.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
pastilhasandClaude Opus 5
33492262b5