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, 24 insertions, 0 deletions

diff --git a/dotfiles/common/.bashrc.d/emacs.sh b/dotfiles/common/.bashrc.d/emacs.sh
new file mode 100644
index 0000000..0a8444b
--- /dev/null
+++ b/dotfiles/common/.bashrc.d/emacs.sh
@@ -0,0 +1,24 @@
+# emacs.sh
+# Craig Jennings <c@cjennings.net>
+# Emacs-specific settings and functions
+
+# GTK/Emacs accessibility bug workaround
+# https://unix.stackexchange.com/questions/230238/
+export NO_AT_BRIDGE=1
+
+# Wake emacs from elisp freeze
+alias emacswake='for i in $(seq 1 500); do killall -s USR2 emacs; done'
+
+# Vterm shell integration
+# Allows shell to send information to vterm via escape sequences
+vterm_printf() {
+    if [ -n "$TMUX" ] && { [ "${TERM%%-*}" = "tmux" ] || [ "${TERM%%-*}" = "screen" ]; }; then
+        # Tell tmux to pass the escape sequences through
+        printf "\ePtmux;\e\e]%s\007\e\\" "$1"
+    elif [ "${TERM%%-*}" = "screen" ]; then
+        # GNU screen
+        printf "\eP\e]%s\007\e\\" "$1"
+    else
+        printf "\e]%s\e\\" "$1"
+    fi
+}