Add the Claude desktop app to Install > AI

Follows the ChatGPT flow: the Install > AI entry runs
omarchy-install-ai-claude in a floating terminal, which installs the
claude-desktop package (Anthropic's Linux desktop beta, repacked from
their Debian repo in omarchy-pkgs) and opens the app. Remove > AI
drops the package along with ~/.config/Claude and ~/.cache/Claude,
the Electron directories the desktop app owns, while keeping
~/.claude, ~/.claude.json, and ~/.cache/claude-cli-nodejs: those
belong to the Claude Code CLI, which ships in its own package and
survives this removal, just as the ChatGPT remover keeps the Codex
CLI.

The menu mark is a new U+E90E glyph in the Omarchy icon font, from
Simple Icons' Claude mark, so it reaches desktops through the next
omarchy-settings release.

Co-Authored-By: Fable 5 <noreply@anthropic.com>
Co-Authored-By: Codex XHigh <noreply@openai.com>

test/shell.d/menu-test.sh

@@ -641,5 +641,5 @@ assert(
 JS
 
 font_charset=$(fc-query --format='%{charset}' "$ROOT/default/fonts/omarchy/omarchy.ttf")
-[[ $font_charset == *"e900-e90d"* ]] || fail "Omarchy icon font includes every custom menu glyph"
+[[ $font_charset == *"e900-e90e"* ]] || fail "Omarchy icon font includes every custom menu glyph"
 pass "Omarchy icon font includes the official agent marks"