chore: extend .gitignore; trigger CI rerun after workflow approval

Agent-Logs-Url: https://github.com/SourceOS-Linux/sourceos-devtools/sessions/ff4ad036-69d4-4e8e-9f15-d3b5085618d1

Co-authored-by: mdheller <21163552+mdheller@users.noreply.github.com>

Author: Copilot

.gitignore

@@ -7,3 +7,7 @@ __pycache__/
 *.egg-info/
 dist/
 build/
+
+# Temporary files
+*.tmp
+.DS_Store