refactor(dotfiles): rename system/ to common/ and remove unused configs

Rename dotfiles/system to dotfiles/common for clarity - indicates
shared dotfiles used across all desktop environments (DWM, Hyprland).

Removed config directories for uninstalled applications:
- ghostty (using different terminal)
- lf (using ranger instead)
- mopidy (using mpd instead)
- nitrogen (X11-only, obsolete for Wayland)
- pychess (not installed)
- JetBrains (not installed via archsetup)
- youtube-dl (using yt-dlp with different config location)

Kept audacious config for potential future use.

Updated all references in archsetup, CLAUDE.md, todo.org, and
validation.sh.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

1 files changed, 0 insertions, 32 deletions

diff --git a/dotfiles/system/.config/qt5ct/qt5ct.conf b/dotfiles/system/.config/qt5ct/qt5ct.conf
deleted file mode 100644
index 56a88db..0000000
--- a/dotfiles/system/.config/qt5ct/qt5ct.conf
+++ /dev/null
@@ -1,32 +0,0 @@
-[Appearance]
-color_scheme_path=/usr/share/qt5ct/colors/darker.conf
-custom_palette=true
-icon_theme=Papirus-Dark
-standard_dialogs=default
-style=Adwaita-Dark
-
-[Fonts]
-fixed="Cantarell,11,-1,5,50,0,0,0,0,0"
-general="Cantarell,11,-1,5,50,0,0,0,0,0"
-
-[Interface]
-activate_item_on_single_click=1
-buttonbox_layout=0
-cursor_flash_time=1000
-dialog_buttons_have_icons=1
-double_click_interval=400
-gui_effects=@Invalid()
-keyboard_scheme=2
-menus_have_icons=true
-show_shortcuts_in_context_menus=true
-stylesheets=@Invalid()
-toolbutton_style=4
-underline_shortcut=1
-wheel_scroll_lines=3
-
-[SettingsWindow]
-geometry=@ByteArray(\x1\xd9\xd0\xcb\0\x3\0\0\0\0\0\0\0\0\0\x11\0\0\x4g\0\0\x2\xf0\0\0\0\0\0\0\0\x11\0\0\x4g\0\0\x2\xf0\0\0\0\0\0\0\0\0\x4h\0\0\0\0\0\0\0\x11\0\0\x4g\0\0\x2\xf0)
-
-[Troubleshooting]
-force_raster_widgets=1
-ignored_applications=@Invalid()