Per-app placement worked but had no default: a box with a big second disk
meant setting CFG_<APP>_STORAGE on every app individually. CFG_STORAGE_DEFAULT
fixes that, and the wizard asks for it in one line.
CFG_<APP>_STORAGE now has three states rather than two, and the third is
the point:
<name> this app goes there, whatever the default says
primary this app goes on the install-time root, explicitly
default no opinion — follow CFG_STORAGE_DEFAULT
Templates ship "default", so the setting reaches every app without
touching 37 configs, while an app that was deliberately placed keeps its
placement. "primary" is new, and needed: without it there was no way to
say "keep this one on the system disk" once the global default moved.
A default naming a location that has since been removed falls back to the
primary root rather than refusing — a disk that got unregistered must not
make apps un-installable.
The wizard asks only once a second drive is ticked; with nothing ticked
there is one possible answer and a control would be furniture. It sets a
default, not a placement, and the value stored is the location NAME, so it
survives the disk being remounted elsewhere.
scripts/dev/lp-storage-default-test covers all three states plus the
removed-location fallback.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
