Under 20 Sparring Prep: what we learned building Random Tactical Timer

What changed today Record money today CTA publish proof Add Zernio custom buyer CTA dispatch Record money today Zernio proof Zernio underscore account IDs Search intent target Primary keyword: under 20 sparring prep Intent class: commercial BID filter: business potential, intent match, and realistic difficulty AI/LLM flow we used We keep this loop tight: plan -> code -> test -> release gate -> feedback. The key is not bigger prompts, it's strict validation and fast iteration.