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, 72 deletions

diff --git a/dotfiles/system/.config/dunst/dunstrc b/dotfiles/system/.config/dunst/dunstrc
deleted file mode 100644
index 104df28..0000000
--- a/dotfiles/system/.config/dunst/dunstrc
+++ /dev/null
@@ -1,72 +0,0 @@
-# Dunst config - Dupre theme
-# Warm, earthy colors from dupre-theme.el
-
-[global]
-# Display
-follow = mouse
-width = 350
-height = (0, 300)
-origin = top-right
-offset = (35, 35)
-indicate_hidden = yes
-notification_limit = 5
-gap_size = 12
-padding = 12
-horizontal_padding = 20
-frame_width = 2
-sort = no
-corner_radius = 10
-
-# Progress bar
-progress_bar_frame_width = 0
-progress_bar_corner_radius = 3
-
-# Colors - Dupre theme
-foreground = "#f0fef0"
-frame_color = "#d7af5f"
-highlight = "#d7af5f, #ccc768"
-
-# Text
-font = BerkeleyMono Nerd Font 11
-markup = full
-format = "<small>%a</small>\n<b>%s</b>\n%b"
-alignment = left
-vertical_alignment = center
-show_age_threshold = -1
-hide_duplicate_count = false
-
-# Icon
-icon_position = left
-min_icon_size = 54
-max_icon_size = 80
-icon_corner_radius = 4
-
-# Misc/Advanced
-dmenu = fuzzel --dmenu --prompt 'Open with'
-
-# Mouse
-mouse_left_click = close_current
-mouse_middle_click = do_action, close_current
-mouse_right_click = close_all
-
-[urgency_low]
-background = "#151311f0"
-timeout = 3
-
-[urgency_normal]
-background = "#151311f0"
-timeout = 8
-
-[urgency_critical]
-background = "#7c2a09f0"
-frame_color = "#d47c59"
-highlight = "#ff2a00"
-foreground = "#f0fef0"
-timeout = 0
-
-[fullscreen_delay_everything]
-fullscreen = delay
-
-[fullscreen_show_critical]
-msg_urgency = critical
-fullscreen = show