chore(git): add mise.toml to .gitignore

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

Author: imjuni

.gitignore

@@ -118,3 +118,4 @@ docs-old/
 git-short
 git-short.sh
 .claude/CLAUDE.local.md
+mise.toml