1/3 - 🛠️ Exe sandbox build update: As the work matured we found a cleaner, more efficient path to a working prototype. Our original 7-stage A–G plan carried a lot of production-grade machinery we don't need yet. We've replaced it with a focused 4-layer build: 1⃣ Engine: the Rate Model itself. Signal → XPR → tier multiplier → coverage, all within the Sponsorship Pool's limits. 2⃣ Quote flow: one transaction, three routes side by side: an industry-average aggregator, the cheapest alternative, and Exe after coverage, using real, sourced fees. 3⃣ Interface: the dashboards, with a "why did I get this?" breakdown behind every number. 4⃣ Stress playback: demand spikes, bot pressure and revenue shocks, replayed month by month.