How did the spouse who did not own the home become a grantor of the trust? I could not find any information on whether a spouse can be a grantor to their spouse’s trust.
There is no home sale exclusion for an irrevocable trust.
Once the trust becomes irrevocable it must file if it had gross income of $600 or more or any taxable income.
Turbotax business is needed for the trust. I see that for 2023 online versions wiyth pro assistance or preparation are offered
https://turbotax.intuit.com/lp/ppc/4940 price 489- 1169 state additional
desktop version without professional assistance. your computer must have a 64-bit operating system windows 10 or up and be a full PC or MAC.
https://turbotax.intuit.com/small-business-taxes/cd-download/ price180 state addition
Most likely a trust return must be filed for California if Fderal is required
