chore: track .config/yazi/yazi.toml in git

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.config/yazi/yazi.toml

@@ -0,0 +1,3 @@
+# yazi.toml
+[mgr]
+show_hidden = true

.gitignore

@@ -16,6 +16,9 @@
 !.zshenv
 !.hushlogin
 !arty.yml
+!.config/
+!.config/yazi/
+!.config/yazi/yazi.toml
 !signature.txt
 !LICENSE
 !README.md