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, 20 insertions, 0 deletions

diff --git a/dotfiles/common/.local/bin/updatemirrors b/dotfiles/common/.local/bin/updatemirrors
new file mode 100755
index 0000000..3ba4f7f
--- /dev/null
+++ b/dotfiles/common/.local/bin/updatemirrors
@@ -0,0 +1,20 @@
+#!/bin/sh
+# cjennings generates arch linux mirror list
+echo "Updating mirrorlist. Please be patient. This may take a few minutes...."
+echo " "
+
+sudo reflector \
+          --connection-timeout 3 \
+          --download-timeout 3 \
+          --protocol https \
+		  --country US \
+		  --age 18 \
+          --latest 20 \
+          --score 10 \
+          --fastest 5 \
+		  --sort score \
+          --save /etc/pacman.d/mirrorlist > /dev/null 2>&1 
+
+cat /etc/pacman.d/mirrorlist
+echo " "
+echo "Done."