Can I apply for an immigrant or temporary spouse visa for my wife while she is already on a tourist visa?

considering you're talking about a 2 July departure date, there's no way for you to file and process the petition in time for that. However, you could file it in Naha and bring her on a later flight once it's been approved and she's had her immigrant visa issued. I don't think there's anyway you can tell the interviewing officer the truth about your plans and get her a tourist visa. she's clearly an intending immigrant and doesn't plan to come back. You can file in the US, but it will take much longer to process that way than she's currently got before she can no longer fly.