Preview v1.0 · not full paid checkout activation
Download the correct upgrade system
Both free and paid checkouts should return here (or production successor). You download one pack. You do not scrape random site folders.
Free School Golden Ticket (correct free system)
MATH1 · CALC1 · CEL1 · ES1 · FIN1 — free forever offline after claim.
Claim free 5-cart downloadSHA-256: 22ADD5A405C0064A5885B6844A494CA52C0B933476F5F98F4D91EFDEC273150D
Paid STEM / specialty upgrades
After payment entitlement (when activated), download only the lab-published STEM upgrade pack. Checkout remains held until a payment GO.
Placeholder: STEM upgrade pack not auto-activated here. Use holder STEM preview cards + future upgrade ZIP with published SHA.
OneCharacterCode retrofits
Retrofits are tested on Bret systems first, then registered by SHA. Admin panel installs them — users do not download raw OCC lab stubs from random paths.
Admin backup / restore panel