chore: remove todos/ from git tracking and add to .gitignore

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

Author: swenze

.gitignore

@@ -53,6 +53,9 @@ Thumbs.db
 # Docs
 docs/
 
+# Todos
+todos/
+
 # Bootstrap injection markers
 app/bootstrap/*.injected
 app/bootstrap/*.original