The fourth panel this desktop handed to GNOME Settings, and the last one
worth owning.
Driverless only, deliberately. Adding a printer that describes its own
capabilities over IPP is supported; choosing a PPD or fetching a vendor
driver is not, and the page says so rather than pretending. That
restraint is the whole design: a wrong driver produces a printer that
accepts jobs, reports success, and prints nothing, which is the worst
failure this page could ship because it looks like it worked. A printer
old enough to need a PPD stays a job for the system printer tool.
Printers and the queue are separate cards because they answer separate
questions. Which printers exist is one; where a document went is the
other, and it is the one that actually brings someone here -- so the
queue is a single list across every printer.
Device URIs are validated by scheme before reaching CUPS, whose backends
run as root. file: and pipe: do not lead to a printer and are refused
here rather than further down.
This machine has no printer, so the page was built against a temporary
CUPS queue that was created, exercised through the service, and removed;
the service was confirmed to observe the removal rather than merely
perform it. Discovery and the driverless add path are verified by their
refusals rather than against hardware.
Claude-Session: https://claude.ai/code/session_01BRvzt4H8XXLPVH5MyYdk9L
Managing a stored credential meant installing Seahorse. The keyring
rows on Privacy could say whether it was locked and nothing about what
was in it.
Four rules, each pinned by a contract, because each is a way this could
leak the thing it exists to protect:
Listing never reads values. Enumerating reports labels and attributes;
it does not ask the keyring to hand over what it is protecting.
A secret never reaches a command line. /proc makes argv readable by
every process on this machine, so a password passed as an argument is
published to all of them. The helper reads the value in process and
writes it to wl-copy on stdin.
A secret never reaches an error message, a log, or a QML property. An
exception raised while holding a password does not get to choose what
text is printed, so the clipboard tool's stderr is discarded rather
than echoed.
Forgetting one is irreversible, so the first press asks and the second
does it, and the confirming button is the only one wearing danger.
The list is collapsed until asked for: opening Privacy should not
enumerate someone's passwords as a side effect. A copied value clears
itself about a minute later, but only if the clipboard still holds it --
the guard compares a SHA-256, so the waiting process never has the
password.
Claude-Session: https://claude.ai/code/session_01BRvzt4H8XXLPVH5MyYdk9L
Nothing showed what was using the drive, and removable media was handled
by a tray helper with no surface in Settings at all.
One scroll rather than tabs: space above, the device below. Every other
settings page is a scrolling card stack, and a tab would not be
deep-linkable from the launcher command or from search.
Three things the page has to get right, each now pinned by a contract,
because each is a way it could quietly lie. / and /home are one btrfs
filesystem sharing one pool of free space, and a page that copies df
shows double the free space that exists. zram is a block device and is
not storage; counting it as a drive overstates this machine by 8 GB.
Unmount and eject refuse anything not on a removable drive, because the
UI is what asks and a UI can be wrong.
The cheap read -- layout, usage, health -- runs when the page opens, at
around 90ms. Measuring what is filling the drive means walking every
file, so it happens on request and says so rather than showing an empty
list that reads as "nothing here".
Partitioning and formatting are deliberately absent. A settings pane is
the wrong place to put erasing a disk two clicks deep; the page opens
GNOME Disks for that.
Adding the page found a fourth hard-coded page list in ShellState. A
page missing from it does not error -- openSettings() falls back to
"home", so the launcher opens the wrong page and logs nothing. A
registry contract now holds the three lists together.
Claude-Session: https://claude.ai/code/session_01BRvzt4H8XXLPVH5MyYdk9L
Settings had a search index and the launcher had script commands, and
neither knew about the other: finding a setting meant opening Settings
first and searching there. One command per page is now generated from
the same sources the in-app search reads -- the sidebar page list, the
group routing, and the schema labels -- so a setting searchable inside
Settings is searchable from the launcher without a second list to
maintain.
Generating it surfaced a gap in the in-app search as well. Six pages had
no vocabulary at all, because their contents come from the system rather
than our schema, so searching "volume" found nothing in Settings either.
They now carry entries, which improves both surfaces.
The product prefix is dropped from every hand-written command title. The
generated ones are qualified "Settings: <page>" instead: a bare page
label collides with the feature of the same name, and two commands
sharing a title are indistinguishable in a launcher.
Claude-Session: https://claude.ai/code/session_01BRvzt4H8XXLPVH5MyYdk9L
Seeding is deliberately conservative: a role whose preferred applications
are all missing is left alone rather than forced. That is right, and it
is also silent -- so a curated handler nobody installs presents as the
machine quietly going back to deciding defaults by installation order,
which is the problem seeding exists to fix. None of Loupe, Papers,
Decibels, Nautilus, mpv or sushi was declared anywhere.
Preview works, on org.gnome.NautilusPreviewer2 rather than the interface
its bus name suggests, but it opened tiled -- shoving the file manager
aside for something meant to be an overlay -- so it gets a float and
center rule sized to leave the file underneath visible.
xdg-utils and desktop-file-utils were undeclared too; seeding from
link-dotfiles started calling them, and the dependency contract said so.
Claude-Session: https://claude.ai/code/session_01BRvzt4H8XXLPVH5MyYdk9L
Six areas an OS is expected to own that this desktop still delegates:
preview, GTK accent cohesion, storage, launcher search, secrets, and
backups. Ordered so each is useful the day it lands.
Claude-Session: https://claude.ai/code/session_01BRvzt4H8XXLPVH5MyYdk9L
Gabriel Brown