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, 23 deletions

diff --git a/dotfiles/system/.config/calibre/metadata_sources/global.json b/dotfiles/system/.config/calibre/metadata_sources/global.json
deleted file mode 100644
index be7665d..0000000
--- a/dotfiles/system/.config/calibre/metadata_sources/global.json
+++ /dev/null
@@ -1,23 +0,0 @@
-{
-  "id_link_rules": {
-    "title": [
-      [
-        "Title",
-        "https://z-library.sk/s/?q=title%3A{title}&languages[]=english&extensions[]=EPUB&extensions[]=PDF&selected_content_types[]=book&order=bestmatch"
-      ]
-    ]
-  },
-  "ignore_fields": [
-    "rating",
-    "series"
-  ],
-  "tag_map_rules": [
-    {
-      "action": "remove",
-      "match_type": "not_one_of",
-      "query": "Art, Biography & Autobiography, Business, Chess, Computers, Cooking, Critical Theory, Design, Economics, French, History, Law, Linguistics, Literature, Magic, Mathematics, Music, Mythology, Non-Fiction, Philosophy, Poetry, Political Science, Politics, Psychology, Religion, Science, Social Critique, Sociology, Travel",
-      "replace": ""
-    }
-  ],
-  "txt_comments": true
-}
\ No newline at end of file