feat(image): install zellij from Hypercube COPR (#219)

## What

Now that zellij is built and published in the `binarypie/hypercube`
COPR, install it from there instead of downloading the upstream static
musl binary.

- **`build_files/hyprland/01-hyprland-desktop.sh`**: replace the pinned
`curl ... | tar` static-binary download with `dnf5 -y install zellij`.
The COPR repo is already enabled in `base/01-base-system.sh`. This drops
the hardcoded version pin, gains shell completions + proper rpm
tracking, and removes a network fetch from the image build.
- **`build_files/hypercube/99-tests.sh`**: restore the rpm-based check —
add `zellij` to `REQUIRED_PACKAGES` and remove the now-redundant
`/usr/bin/zellij` file check (the `/etc/zellij/config.kdl` config check
stays).

This is the `TODO(#198)` cleanup that the old static-binary block called
for.

## Dependency

Requires the zellij package to exist in the COPR — done (build
succeeded). The packaging itself (spec fix + workflow wiring) is in
#218.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: binarypie

build_files/hypercube/99-tests.sh

@@ -19,6 +19,7 @@ REQUIRED_PACKAGES=(
   "quickshell"
   # Terminals
   "ghostty"
+  "zellij"
   # Dev tools
   "neovim"
   "lazygit"
@@ -48,8 +49,6 @@ REQUIRED_FILES=(
   # Config files
   "/etc/fish/config.fish"
   "/etc/zellij/config.kdl"
-  # zellij ships as a static binary (not an rpm), so check the file directly
-  "/usr/bin/zellij"
   "/usr/share/hypercube/config/starship/starship.toml"
   # Theming
   "/usr/share/themes/Tokyonight-Dark/gtk-3.0/gtk.css"

build_files/hyprland/01-hyprland-desktop.sh

@@ -56,21 +56,10 @@ dnf5 -y install \
 ### Fish Shell (set as default)
 dnf5 -y install fish
 
-### Terminal multiplexer - zellij
-# zellij isn't packaged in the ublue/Fedora repos (`dnf install zellij` ->
-# "No match"), so install the official static musl binary. The base image is
-# amd64-only (no platform matrix in build.yml), so x86_64 is sufficient. Pinned
-# for reproducibility. Gives the host the same Ctrl+Space multiplexer keymap
-# (installed to /etc/zellij/config.kdl by 03-hypercube-configs.sh) as devcube.
-#
-# TODO(#198): a COPR spec now exists at packages/zellij/zellij.spec. Once the
-# `zellij` package is configured + built in the binarypie/hypercube COPR (already
-# enabled in base/01-base-system.sh), replace this block with `dnf5 -y install
-# zellij` and move the test in hypercube/99-tests.sh back to REQUIRED_PACKAGES.
-ZELLIJ_VERSION=0.44.3
-curl -fsSL "https://github.com/zellij-org/zellij/releases/download/v${ZELLIJ_VERSION}/zellij-x86_64-unknown-linux-musl.tar.gz" \
-  | tar -xz -C /usr/bin zellij
-chmod 0755 /usr/bin/zellij
+### Terminal multiplexer - zellij (from Hypercube COPR)
+# Gives the host the same Ctrl+Space multiplexer keymap (installed to
+# /etc/zellij/config.kdl by 03-hypercube-configs.sh) as devcube.
+dnf5 -y install zellij
 
 ### Terminal - Ghostty (from scottames COPR)
 dnf5 -y copr enable scottames/ghostty