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>

2 files changed, 112 insertions, 0 deletions

diff --git a/dotfiles/common/.config/rofi/config.rasi b/dotfiles/common/.config/rofi/config.rasi
new file mode 100644
index 0000000..3f50cc6
--- /dev/null
+++ b/dotfiles/common/.config/rofi/config.rasi
@@ -0,0 +1,6 @@
+configuration {
+    show-icons: true;
+    dpi: 1;
+}
+
+@theme "~/.config/rofi/themes/rounded-gray-dark.rasi"
diff --git a/dotfiles/common/.config/rofi/themes/rounded-gray-dark.rasi b/dotfiles/common/.config/rofi/themes/rounded-gray-dark.rasi
new file mode 100644
index 0000000..de5bbc3
--- /dev/null
+++ b/dotfiles/common/.config/rofi/themes/rounded-gray-dark.rasi
@@ -0,0 +1,106 @@
+/* ROFI THEME - Matched to dunst notifications */
+/* Based on: Newman Sanchez (https://github.com/newmanls) */
+
+* {
+    bg0:    #383c4af0;
+    bg1:    #2d303c;
+    bg2:    #4a4e5c80;
+    bg3:    #2d303c;
+    fg0:    #cdd1dc;
+    fg1:    #ffffff;
+    fg2:    #969696;
+    fg3:    #4a4e5c;
+
+    font:   "FiraCode Nerd Font Mono 10";
+
+    background-color:   transparent;
+    text-color:         @fg0;
+
+    margin:     0px;
+    padding:    0px;
+    spacing:    0px;
+}
+
+window {
+    location:       north;
+    y-offset:       calc(50% - 176px);
+    width:          480;
+    border-radius:  10px;
+    border:         1px;
+    border-color:   @bg1;
+
+    background-color:   @bg0;
+}
+
+mainbox {
+    padding:    12px;
+}
+
+inputbar {
+    background-color:   @bg1;
+    border-color:       @bg3;
+
+    border:         1px;
+    border-radius:  6px;
+
+    padding:    12px 20px;
+    spacing:    8px;
+    children:   [ prompt, entry ];
+}
+
+prompt {
+    text-color: @fg2;
+}
+
+entry {
+    placeholder:        "Search";
+    placeholder-color:  @fg3;
+}
+
+message {
+    margin:             12px 0 0;
+    border-radius:      6px;
+    border-color:       @bg2;
+    background-color:   @bg2;
+}
+
+textbox {
+    padding:    8px 24px;
+}
+
+listview {
+    background-color:   transparent;
+
+    margin:     12px 0 0;
+    lines:      8;
+    columns:    1;
+
+    fixed-height: false;
+}
+
+element {
+    padding:        8px 16px;
+    spacing:        8px;
+    border-radius:  6px;
+}
+
+element normal active {
+    text-color: @bg3;
+}
+
+element alternate active {
+    text-color: @bg3;
+}
+
+element selected normal, element selected active {
+    background-color:   @bg3;
+}
+
+element-icon {
+    size:           1em;
+    vertical-align: 0.5;
+}
+
+element-text {
+    text-color: inherit;
+}