Second review round, three reachable defects plus one decision:
- A public raw app was 150px tall. The bundle's iframe is `h-full`, and dropping
its `min-h-screen` left nothing to resolve against on the share, embed and
custom-path routes — none of which has a layout above them. Measured: 150px in
a 900px viewport. The floor goes back for those routes and stays off inside the
workspace, where the layout hands a height down and `min-h-screen` would
overflow it by the band.
- The band retracted out from under its own open menu on a deployed app. Last
round taught the sidebar card to hold while the pointer is in a portaled menu
and left its sibling alone, but the band opens menus too — the workspace disc,
the fork family, every path level. One helper now, used by both closers.
- `bandPeeked` outlived the page it belonged to. Clicking a control in the band
navigates away, and the next page may not be one the band floats over, so the
hover handlers that would clear it are gone — leaving the band already down
when a full-bleed page came back. `beforeNavigate` clears it.
- An embed has no band to carry a control, so the app's Edit floats over the
canvas there, where it sat before the band existed. Registering it as the
band's `afterName` under `navHidden` instead would have cost the app 44px of
the iframe for a row holding one button.
Reading "is the workspace navigation hidden" now has one definition
(`isMenuHidden`), since a page has to answer it too: the flag is sticky inside an
iframe, so the raw query param is the wrong thing to read.
Also inset the band by the rail only when there is a rail — an embed reserved
its width and crowded its own controls into a compact layout early.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>