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>

default/fonts/omarchy/README.md

@@ -16,6 +16,7 @@ The private-use glyphs in `omarchy.ttf` are:
 - `U+E90B` — Perplexity, from <https://simpleicons.org/icons/perplexity.svg>
 - `U+E90C` — OpenClaw, traced from the lobster mascot the openclaw package ships as `dist/control-ui/favicon.svg`, since upstream publishes no monochrome SVG
 - `U+E90D` — Cursor, from <https://simpleicons.org/icons/cursor.svg>
+- `U+E90E` — Claude, from <https://simpleicons.org/icons/claude.svg>
 
 The agent marks are monochrome so the menu can render them using the active
 theme's foreground and selection colors.