You, your lawyer or the creditor's lawyer has to draft a reaffirmation agreement (form usually available at the local bankruptcy court website), get it signed and filed.
Bankruptcy attorneys should do their work pro bono.
Yes, you are not required to be unemployed to declare bankruptcy.
Yes. Filing bankruptcy does not affect your work status generally speaking.
There is no law against it but you might have trouble finding a lending institution that will work with you.
Yes, and if things don't work out, you can refile.
You need to include all of your debts in the bankruptcy.
Of course. It is illegal to discriminate against persons who have filed bankruptcy.
It should not preclude you. You might want to disclose that upfront especially if you know they are going to run a background check since that will definitely show up during their due diligence.
Yes
it does not work
No, not as long as they were included in the bankruptcy. You should give their information to your bankruptcy attorney, who will contact the debt collector. If that doesn't work, your attorney will certainly know what to do next.
When you filed for the bankruptcy, you are also declaring total surrender of the business to the hands of creditor. Although, you can still maintain rights of the company, for the sake of proper decorum, it is advised to allow the bankruptcy trustee to work on the survival of the company.