refactor: drop in-repo dotfiles/, move stow tooling to the dotfiles repo

Since the installer clones DOTFILES_REPO into ~/.dotfiles and stows from there, the in-repo dotfiles/ tree was dead weight. Nothing reads it at install time. I removed it (831 files) now that both machines are migrated.

The Makefile's stow / restow / reset / unstow / import targets and the dotfile-script unit suites moved to the dotfiles repo. They sit alongside the scripts they manage and run standalone (cd ~/.dotfiles && make ...). This Makefile keeps the VM-integration targets and the installer-helper suite (safe-rm-rf).

I updated CLAUDE.md and README.md so stow operations run from ~/.dotfiles, and the dotfile-management, theme, and unit-test sections point at the standalone repo. The README was already describing the old in-repo model from before the installer switched to cloning. This brings it in line.

1 files changed, 0 insertions, 13 deletions

diff --git a/dotfiles/common/.config/calibre/plugins/Find Duplicates.json b/dotfiles/common/.config/calibre/plugins/Find Duplicates.json
deleted file mode 100644
index 9daa2b7..0000000
--- a/dotfiles/common/.config/calibre/plugins/Find Duplicates.json
+++ /dev/null
@@ -1,13 +0,0 @@
-{
-  "authorMatch": "identical",
-  "authorSoundexLength": 8,
-  "autoDeleteBinaryDups": false,
-  "identifierType": "isbn",
-  "includeLanguages": false,
-  "searchType": "binary",
-  "showAllGroups": true,
-  "showTagAuthor": true,
-  "sortGroupsByTitle": true,
-  "titleMatch": "identical",
-  "titleSoundexLength": 6
-}
\ No newline at end of file