Install the desktop this repository already describes

The shell named a font, a pointer theme and a wallpaper that no package list
installed and no stage placed. It went unnoticed because this machine collected
all three under sunhat and never lost them; a fresh Fedora box would have come
up with tofu for every shell glyph, the default pointer, and no wallpaper --
while Wallpaper.qml called that missing file `shippedPath`.

The dependency contract reported PASS throughout, because it reads commands that
scripts invoke and none of these are one. The new assets contract covers what it
structurally cannot: fonts and pointer themes named in configs and gsettings, a
shipped wallpaper that must exist, commands launched from QML, and directories
nothing puts into service. Written against the broken tree first, where it found
ten faults.

Four of those were packages nobody had noticed were missing -- gnome-calendar,
podman, pipewire-utils and flatpak -- alongside gnome-control-center, which backs
fifteen rows of Panama's own Settings and is commented so it is not mistaken for
GNOME-session residue later.

Fonts turned out to need no install stage at all. Terra, which install-packages
already enables, packages every Nerd Font, so sunhat's wget-and-unzip is replaced
by five lines in a package list. The pointer theme had no such luck: it is
packaged nowhere, so it is vendored rather than downloaded from a URL that can
rot.

espanso stays undeclared. It is in no enabled repository, and building it from
source is the install method this repository is trying to stop using.

Claude-Session: https://claude.ai/code/session_01Q84axqUE5inJhf5Jz9CFy1

setup/packages/initial-packages

@@ -4,6 +4,9 @@ btop
 cargo
 curl
 eza
+# install-packages installs flatpaks with it; Fedora Workstation ships it,
+# but a minimal install does not.
+flatpak
 fontconfig
 fwupd
 fzf