Install Hype, the Markdown presentation app, by default (#13455)

Hype joins Omacut, Monologue, Omacalc and Omawrite as an Omacom app in
the base install and the preinstall set, so Remove and Install
Preinstalls cover it too. A migration installs it on existing machines,
unless their owner has removed the preinstalls, and the GUIs chapter of
the manual introduces it.

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

test/shell.d/preinstalls-test.sh

@@ -65,7 +65,7 @@ for package in "${restored[@]}"; do
 done
 pass "every preinstall is shipped in omarchy-base.packages"
 
-for package in omacut monologue omacalc omawrite; do
+for package in omacut monologue omacalc omawrite hype; do
   printf '%s\n' "${restored[@]}" | grep -qxF "$package" ||
     fail "preinstalls cover the Omacom apps" "$package is missing"
 done