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, 72 insertions, 0 deletions

diff --git a/dotfiles/common/.config/dunst/dunstrc b/dotfiles/common/.config/dunst/dunstrc
new file mode 100644
index 0000000..104df28
--- /dev/null
+++ b/dotfiles/common/.config/dunst/dunstrc
@@ -0,0 +1,72 @@
+# 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