chore: untrack a stray HM temp file; ignore settings.local.json.tmp.*

A settings.local.json.tmp.* atomic-write temp file slipped into the
previous commit via git add -A; untrack it and ignore the pattern. (The
prior commit message also dropped the word text to a stray backtick:
the override glyph is filled with the palette text colour.)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.gitignore

@@ -7,3 +7,4 @@ __pycache__/
 
 # Claude Code machine-local settings (permissions etc.)
 .claude/settings.local.json
+.claude/settings.local.json.tmp.*