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, 27 deletions

diff --git a/dotfiles/system/.config/fontconfig/fonts.conf b/dotfiles/system/.config/fontconfig/fonts.conf
deleted file mode 100644
index 6a27675..0000000
--- a/dotfiles/system/.config/fontconfig/fonts.conf
+++ /dev/null
@@ -1,27 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
-<fontconfig>
-    <match target="font">
-        <edit name="antialias" mode="assign">
-            <bool>true</bool>
-        </edit>
-        <edit name="hinting" mode="assign">
-            <bool>true</bool>
-        </edit>
-        <edit name="hintstyle" mode="assign">
-            <const>hintslight</const>
-        </edit>
-        <edit name="rgba" mode="assign">
-            <const>none</const>
-        </edit>
-        <edit name="autohint" mode="assign">
-            <bool>true</bool>
-        </edit>
-        <edit name="lcdfilter" mode="assign">
-            <const>lcdnone</const>
-        </edit>
-        <edit name="dpi" mode="assign">
-            <double>144</double>
-        </edit>
-    </match>
-</fontconfig>