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, 526 deletions

diff --git a/dotfiles/system/.config/pychess/engines.json b/dotfiles/system/.config/pychess/engines.json
deleted file mode 100644
index 913a9be..0000000
--- a/dotfiles/system/.config/pychess/engines.json
+++ /dev/null
@@ -1,526 +0,0 @@
-[
- {
-  "analyze": true,
-  "command": "/usr/lib/python3.13/site-packages/pychess/Players/PyChess.py",
-  "comment": "",
-  "country": "dk",
-  "level": 5,
-  "md5": "be6e594623ce6b20024914bcffba3f66",
-  "name": "PyChess.py",
-  "options": [
-   {
-    "default": false,
-    "name": "Ponder",
-    "type": "check",
-    "value": false
-   },
-   {
-    "default": 0,
-    "max": 100,
-    "min": 0,
-    "name": "skipPruneChance",
-    "type": "spin",
-    "value": 0
-   }
-  ],
-  "protocol": "xboard",
-  "recheck": false,
-  "variants": [
-   "normal",
-   "wildcastle",
-   "nocastle",
-   "fischerandom",
-   "crazyhouse",
-   "light-brigade",
-   "losers",
-   "suicide",
-   "giveaway",
-   "horde",
-   "atomic",
-   "racingkings",
-   "seirawan",
-   "kingofthehill",
-   "3check",
-   "placement",
-   "asean",
-   "cambodian",
-   "makruk",
-   "sittuyin"
-  ],
-  "vm_args": [
-   "-u"
-  ],
-  "vm_command": "/usr/bin/python",
-  "vm_name": "python"
- },
- {
-  "analyze": true,
-  "command": "/usr/bin/critter",
-  "comment": "",
-  "country": "sk",
-  "level": 20,
-  "md5": "854b376c8e7b3405b5e4f7cef8420204",
-  "name": "critter",
-  "options": [
-   {
-    "default": 64,
-    "max": 8192,
-    "min": 8,
-    "name": "Hash",
-    "type": "spin"
-   },
-   {
-    "default": false,
-    "name": "Ponder",
-    "type": "check"
-   },
-   {
-    "default": true,
-    "name": "OwnBook",
-    "type": "check"
-   },
-   {
-    "default": "book.cbk",
-    "name": "Book File",
-    "type": "text"
-   },
-   {
-    "default": false,
-    "name": "UCI_Chess960",
-    "type": "check"
-   },
-   {
-    "default": 1,
-    "max": 100,
-    "min": 1,
-    "name": "MultiPV",
-    "type": "spin"
-   },
-   {
-    "default": 20,
-    "max": 32,
-    "min": 1,
-    "name": "Threads",
-    "type": "spin"
-   },
-   {
-    "default": 5,
-    "max": 15,
-    "min": 4,
-    "name": "Split Depth",
-    "type": "spin"
-   },
-   {
-    "default": "/gtb",
-    "name": "GaviotaTbPath",
-    "type": "text"
-   },
-   {
-    "default": 32,
-    "max": 256,
-    "min": 4,
-    "name": "GaviotaTbCache",
-    "type": "spin"
-   },
-   {
-    "choices": [
-     "uncompressed",
-     "cp1",
-     "cp2",
-     "cp3",
-     "cp4"
-    ],
-    "default": "cp4",
-    "name": "GaviotaTbCompression",
-    "type": "combo"
-   },
-   {
-    "choices": [
-     "Disable",
-     "Only At Root",
-     "Everywhere"
-    ],
-    "default": "Only At Root",
-    "name": "Tablebase Usage",
-    "type": "combo"
-   },
-   {
-    "name": "Clear Hash",
-    "type": "button"
-   },
-   {
-    "default": false,
-    "name": "Use Session File",
-    "type": "check"
-   },
-   {
-    "default": "session.csf",
-    "name": "Session File",
-    "type": "text"
-   },
-   {
-    "default": 32,
-    "max": 1024,
-    "min": 2,
-    "name": "SF Size",
-    "type": "spin"
-   },
-   {
-    "default": 8,
-    "max": 32,
-    "min": 2,
-    "name": "SF Write Depth",
-    "type": "spin"
-   },
-   {
-    "default": 0,
-    "max": 32,
-    "min": 0,
-    "name": "SF Material Limit",
-    "type": "spin"
-   },
-   {
-    "default": 0,
-    "max": 999,
-    "min": 0,
-    "name": "SF Move Limit",
-    "type": "spin"
-   },
-   {
-    "name": "Clear SF",
-    "type": "button"
-   },
-   {
-    "default": false,
-    "name": "Resolve Score Drops",
-    "type": "check"
-   },
-   {
-    "default": 32,
-    "max": 100,
-    "min": 0,
-    "name": "King Safety Weight",
-    "type": "spin"
-   }
-  ],
-  "protocol": "uci",
-  "recheck": false
- },
- {
-  "analyze": true,
-  "command": "/usr/bin/fruit",
-  "comment": "",
-  "country": "fr",
-  "level": 5,
-  "md5": "d401d07d0b5c41cbf8be63574a9214ca",
-  "name": "fruit",
-  "options": [
-   {
-    "default": "book_small.bin",
-    "name": "BookFile",
-    "type": "text",
-    "value": "book_small.bin"
-   },
-   {
-    "default": 50,
-    "max": 500,
-    "min": 0,
-    "name": "Delta Margin",
-    "type": "spin",
-    "value": 50
-   },
-   {
-    "default": false,
-    "name": "Delta Pruning",
-    "type": "check",
-    "value": false
-   },
-   {
-    "default": 100,
-    "max": 500,
-    "min": 0,
-    "name": "Futility Margin",
-    "type": "spin",
-    "value": 100
-   },
-   {
-    "default": false,
-    "name": "Futility Pruning",
-    "type": "check",
-    "value": false
-   },
-   {
-    "default": 16,
-    "max": 1024,
-    "min": 4,
-    "name": "Hash",
-    "type": "spin",
-    "value": 16
-   },
-   {
-    "default": true,
-    "name": "History Pruning",
-    "type": "check",
-    "value": true
-   },
-   {
-    "default": 60,
-    "max": 100,
-    "min": 0,
-    "name": "History Threshold",
-    "type": "spin",
-    "value": 60
-   },
-   {
-    "default": 100,
-    "max": 400,
-    "min": 0,
-    "name": "King Safety",
-    "type": "spin",
-    "value": 100
-   },
-   {
-    "default": 100,
-    "max": 400,
-    "min": 0,
-    "name": "Material",
-    "type": "spin",
-    "value": 100
-   },
-   {
-    "choices": [
-     "Always",
-     "Fail High",
-     "Never"
-    ],
-    "default": "Fail High",
-    "name": "NullMove Pruning",
-    "type": "combo",
-    "value": "Fail High"
-   },
-   {
-    "default": 3,
-    "max": 3,
-    "min": 1,
-    "name": "NullMove Reduction",
-    "type": "spin",
-    "value": 3
-   },
-   {
-    "default": true,
-    "name": "OwnBook",
-    "type": "check",
-    "value": true
-   },
-   {
-    "default": 100,
-    "max": 400,
-    "min": 0,
-    "name": "Passed Pawns",
-    "type": "spin",
-    "value": 100
-   },
-   {
-    "default": 100,
-    "max": 400,
-    "min": 0,
-    "name": "Pawn Structure",
-    "type": "spin",
-    "value": 100
-   },
-   {
-    "default": 100,
-    "max": 400,
-    "min": 0,
-    "name": "Piece Activity",
-    "type": "spin",
-    "value": 100
-   },
-   {
-    "default": false,
-    "name": "Ponder",
-    "type": "check",
-    "value": false
-   },
-   {
-    "default": 1,
-    "max": 2,
-    "min": 0,
-    "name": "Quiescence Check Plies",
-    "type": "spin",
-    "value": 1
-   },
-   {
-    "default": 5,
-    "max": 6,
-    "min": 1,
-    "name": "Verification Reduction",
-    "type": "spin",
-    "value": 5
-   },
-   {
-    "choices": [
-     "Always",
-     "Endgame",
-     "Never"
-    ],
-    "default": "Endgame",
-    "name": "Verification Search",
-    "type": "combo",
-    "value": "Endgame"
-   }
-  ],
-  "protocol": "uci",
-  "recheck": false,
-  "workingDirectory": "/usr/bin"
- },
- {
-  "analyze": true,
-  "command": "/usr/bin/stockfish",
-  "comment": "",
-  "country": "no",
-  "level": 20,
-  "md5": "c72ee03eee276a3a8e142ed144b4c77b",
-  "name": "stockfish",
-  "options": [
-   {
-    "name": "Clear Hash",
-    "type": "button"
-   },
-   {
-    "default": "<empty>",
-    "name": "Debug Log File",
-    "type": "text",
-    "value": "<empty>"
-   },
-   {
-    "default": "nn-1c0000000000.nnue",
-    "name": "EvalFile",
-    "type": "text",
-    "value": "nn-1c0000000000.nnue"
-   },
-   {
-    "default": "nn-37f18f62d772.nnue",
-    "name": "EvalFileSmall",
-    "type": "text",
-    "value": "nn-37f18f62d772.nnue"
-   },
-   {
-    "default": 16,
-    "max": 33554432,
-    "min": 1,
-    "name": "Hash",
-    "type": "spin",
-    "value": 16
-   },
-   {
-    "default": 10,
-    "max": 5000,
-    "min": 0,
-    "name": "Move Overhead",
-    "type": "spin",
-    "value": 10
-   },
-   {
-    "default": 1,
-    "max": 256,
-    "min": 1,
-    "name": "MultiPV",
-    "type": "spin",
-    "value": 1
-   },
-   {
-    "default": 0,
-    "max": 10000,
-    "min": 0,
-    "name": "nodestime",
-    "type": "spin",
-    "value": 0
-   },
-   {
-    "default": "auto",
-    "name": "NumaPolicy",
-    "type": "text",
-    "value": "auto"
-   },
-   {
-    "default": false,
-    "name": "Ponder",
-    "type": "check",
-    "value": false
-   },
-   {
-    "default": 20,
-    "max": 20,
-    "min": 0,
-    "name": "Skill Level",
-    "type": "spin",
-    "value": 20
-   },
-   {
-    "default": true,
-    "name": "Syzygy50MoveRule",
-    "type": "check",
-    "value": true
-   },
-   {
-    "default": "<empty>",
-    "name": "SyzygyPath",
-    "type": "text",
-    "value": "<empty>"
-   },
-   {
-    "default": 1,
-    "max": 100,
-    "min": 1,
-    "name": "SyzygyProbeDepth",
-    "type": "spin",
-    "value": 1
-   },
-   {
-    "default": 7,
-    "max": 7,
-    "min": 0,
-    "name": "SyzygyProbeLimit",
-    "type": "spin",
-    "value": 7
-   },
-   {
-    "default": 1,
-    "max": 1024,
-    "min": 1,
-    "name": "Threads",
-    "type": "spin",
-    "value": 1
-   },
-   {
-    "default": false,
-    "name": "UCI_Chess960",
-    "type": "check",
-    "value": false
-   },
-   {
-    "default": 1320,
-    "max": 3190,
-    "min": 1320,
-    "name": "UCI_Elo",
-    "type": "spin",
-    "value": 1320
-   },
-   {
-    "default": false,
-    "name": "UCI_LimitStrength",
-    "type": "check",
-    "value": false
-   },
-   {
-    "default": false,
-    "name": "UCI_ShowWDL",
-    "type": "check",
-    "value": false
-   }
-  ],
-  "protocol": "uci",
-  "recheck": false
- }
-]
\ No newline at end of file