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, 140 deletions

diff --git a/dotfiles/system/.config/calibre/plugins/Favourites Menu.json b/dotfiles/system/.config/calibre/plugins/Favourites Menu.json
deleted file mode 100644
index 8f239ba..0000000
--- a/dotfiles/system/.config/calibre/plugins/Favourites Menu.json
+++ /dev/null
@@ -1,140 +0,0 @@
-{
-  "menus": [
-    {
-      "display": "Convert books",
-      "path": [
-        "Convert Books"
-      ]
-    },
-    null,
-    {
-      "display": "Start Content server",
-      "path": [
-        "Connect Share",
-        "Start Content server"
-      ]
-    },
-    {
-      "display": "Extract ISBN",
-      "path": [
-        "Extract ISBN"
-      ]
-    },
-    null,
-    {
-      "display": "Add to default list",
-      "path": [
-        "Reading List",
-        "Add to default list"
-      ]
-    },
-    {
-      "display": "Remove from default list",
-      "path": [
-        "Reading List",
-        "Remove from default list"
-      ]
-    },
-    {
-      "display": "View default list",
-      "path": [
-        "Reading List",
-        "View default list"
-      ]
-    },
-    null,
-    {
-      "display": "Find book duplicates...",
-      "path": [
-        "Find Duplicates",
-        "Find book duplicates..."
-      ]
-    },
-    {
-      "display": "Clean comments",
-      "path": [
-        "Clean Comments",
-        "Clean comments"
-      ]
-    },
-    {
-      "display": "Check library",
-      "path": [
-        "Choose Library",
-        "Library maintenance",
-        "Check library"
-      ]
-    },
-    {
-      "display": "Plugin updater",
-      "path": [
-        "Plugin Updater"
-      ]
-    },
-    null,
-    {
-      "display": "Email to...",
-      "path": [
-        "Connect Share",
-        "Email to..."
-      ]
-    },
-    {
-      "display": "email to Christine's Kindle",
-      "path": [
-        "Connect Share",
-        "Email to...",
-        "Christine's Kindle"
-      ]
-    },
-    {
-      "display": "email to Craig's Paperwhite",
-      "path": [
-        "Connect Share",
-        "Email to...",
-        "Paperwhite"
-      ]
-    },
-    {
-      "display": "email to Craig's Pixel6",
-      "path": [
-        "Connect Share",
-        "Email to...",
-        "Pixel6"
-      ]
-    },
-    null,
-    {
-      "display": "Start wireless device connection",
-      "path": [
-        "Connect Share",
-        "Start wireless device connection"
-      ]
-    },
-    {
-      "display": "Stop wireless device connection [192.168.86.26 or 172.17.0.1, port 9090]",
-      "path": [
-        "Connect Share",
-        "Stop wireless device connection [192.168.86.26 or 172.17.0.1, port 9090]"
-      ]
-    },
-    {
-      "display": "Manage collections",
-      "path": [
-        "Edit Collections"
-      ]
-    },
-    {
-      "display": "Get books",
-      "path": [
-        "Store"
-      ]
-    },
-    {
-      "display": "Kindle Collections",
-      "path": [
-        "Kindle Collections"
-      ]
-    }
-  ]
-}
\ No newline at end of file