1- Keep it cool, don't freak out,it's perfectly normal and common, all concrete cracks, besides 1/32" is nothing.
2- Leave the small crack on the garage like that, it looks better than the patch work you are planning to do.
3- Repairs will make sense only if you have water filtration through the cracks, and not otherwise.
4- Hairline cracks are common in concrete walls and are not a major thing if proper waterproofing system is present, I think you have a solid foundation and you are worrying too much about it, relax and let it be (at least for now).
Feel better now? I hope so.