http://trigger.dev lets developers add AI agents to their products with a simple SDK, handling execution, long-running workflows, and reliability so they don't have to. Over 90% of their usage now comes from agent workflows, and they recently announced their $16M Series A led by Standard Capital. In this episode of Founder Firesides, co-founders @mattaitken and @maverickdotdev sat down with YC's @koomen to talk about three versions of the product before finding product market fit, how building…