rega's census refutes the min-height diagnosis I gave, and the arithmetic is what
settles it. Inside section.dms-pane the CONTENT measures exactly the viewport: 900 in a
794px pane at 1440x900, 844 in a 712px pane at 390x844. The overflow is not "about the
DX-life header", it IS the header -- 106 and 132 px -- and it happens on 12 of 16 tabs
INCLUDING plugins that assert no floor of their own, which is what proves the floor is
not theirs.
library/ProfileLoader.vue:336 floors EVERY profile at
`min-height: var(--profile-min-h, 100dvh)`. That measures against the VIEWPORT while the
pane measures against its HOST, so wherever anything sits above the gallery the profile
is taller than the pane by exactly that chrome, and .dms-pane's overflow-y:auto scrolls
the whole plugin -- tab strip included. ProfileLoader documents the trap and documents
the only lever: the floor is inside the child's SHADOW ROOT, where no host-page selector
reaches, so an inherited custom property is all a host has. `--profile-min-h: 0`.
IT IS TWO THIRDS OF A FIX, NOT A NEW DEFECT. .vtl-host and plugin-studio's .ps-pane
already set it. .dms-pane was copied from .vtl-host -- its own comment says "porting the
same proven shape" -- and took the first two lines: fill the host, own the overflow. The
third, release the child's viewport floor, is the one that makes the other two safe.
So the gate now asserts the THREE AS ONE SHAPE: a rule that is absolutely-filling AND
scrolling must release the floor. It also FAILS if it cannot find such a rule at all,
because a gate that silently stops finding its subject is the failure I spent this
morning removing from check:i18n-keys-exist -- a check that matches nothing reports the
same green as a check that matches everything.
Negative-tested: removing the opt-out from either pane fails it, and changing the pane's
shape so the gate cannot recognise it fails it too rather than passing blind.
MY DIAGNOSIS WAS SECOND-ORDER AND I SHOULD SAY SO PLAINLY. The min-height floors were
real and worth fixing, but they only bite when a plugin's own floor exceeds the pane.
This bites on every tab at every size. I reasoned from source to the first mechanism
that explained the one symptom I had been shown, and the tall-desktop arm -- the one I
asked rega to run precisely because it would refute me -- is what separated them.
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