Refuse a read-only destination in _atomic_replace on Windows (nt-only guard;
os.replace there raises PermissionError and the fallback would silently clobber
it), plus test-only guards: utf-8 encoding kwargs, posix-shape path assertions,
FIFO/AF_UNIX/symlink skips, and a replace-retry for AV/indexer locks. No POSIX
behavior change.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
claude_uninstall/gemini_uninstall/codebuddy_uninstall accepted project_dir
but, with the default project=False, still deleted the user-global skill
tree, so a library/test caller passing a project_dir nuked ~/.claude et al
(the API trap behind #2168). They now take remove_user_skill and treat a
passed project_dir as authoritative; uninstall_all opts in explicitly to
preserve 'graphify uninstall' behavior. Also fixes a live CLI bug where
'uninstall --project' deleted the global codebuddy skill.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
