If you did not sign a reaffirmation agreement, your liability on the mortgage note is discharged and you cannot be foreclosed upon personally. The surrender of the home post-discharge should be reported as surrendered in bankruptcy and should not show up as a foreclosure. Check your credit reports after surrendering the home back to Wells Fargo to ensure that there is no discrepancy, as errors must be removed per the Fair Credit Reporting Act.
Your debt is not reaffirmed or excepted from the discharge by stating your intention to the trustee at the hearing. The only way to reaffirm or prevent your loan from being discharged is by signing a reaffirmation agreement and filing it with the court.
You may be able to get the lender to report positive information by disputing the incorrect information on your credit report with the credit bureaus and by sending a Qualified Written Request to the lender asking for account history and other information that they would normally provide by statements.