I started a 90-day experiment because I got tired of a very specific type of startup content. The story usually goes something like this: Buy a MacBook. Open Claude. Build a SaaS in a weekend. Post a few screenshots. Somehow arrive at $1M ARR. The part that always seems to be missing is the middle. How do people find it? Why would they trust it? Would they pay for it? What breaks in production? How long does billing take? How do you explain the product? What hap...