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, 61 deletions

diff --git a/dotfiles/system/.config/calibre/plugins/Open With.json b/dotfiles/system/.config/calibre/plugins/Open With.json
deleted file mode 100644
index 81eaeb8..0000000
--- a/dotfiles/system/.config/calibre/plugins/Open With.json
+++ /dev/null
@@ -1,61 +0,0 @@
-{
-  "OpenWithMenus": {
-    "Menus": [
-      {
-        "active": false,
-        "appArgs": "",
-        "appPath": "firefox",
-        "format": "EPUB",
-        "image": "owp_firefox.png",
-        "menuText": "EPUBReader (EPUB)",
-        "subMenu": ""
-      },
-      {
-        "active": false,
-        "appArgs": "-c",
-        "appPath": "/usr/bin/emacsclient",
-        "format": "PDF",
-        "image": "reader.png",
-        "menuText": "Emacsclient",
-        "subMenu": ""
-      },
-      {
-        "active": true,
-        "appArgs": "",
-        "appPath": "/usr/bin/zathura",
-        "format": "EPUB",
-        "image": "edit_book.png",
-        "menuText": "Zathura (EPUB)",
-        "subMenu": ""
-      },
-      {
-        "active": true,
-        "appArgs": "",
-        "appPath": "/usr/bin/zathura",
-        "format": "PDF",
-        "image": "PDF.png",
-        "menuText": "Zathura (PDF)",
-        "subMenu": ""
-      },
-      {
-        "active": false,
-        "appArgs": "-c",
-        "appPath": "/usr/bin/emacsclient",
-        "format": "EPUB",
-        "image": "PDF.png",
-        "menuText": "Emacsclient",
-        "subMenu": ""
-      },
-      {
-        "active": false,
-        "appArgs": "",
-        "appPath": "gimp",
-        "format": "COVER",
-        "image": "owp_gimp.png",
-        "menuText": "Gimp (Cover)",
-        "subMenu": ""
-      }
-    ],
-    "UrlColWidth": 202
-  }
-}
\ No newline at end of file