Reconcile Thermal pricing and dashboard totals

Work in the real product frontend and the transactional backend. Integrate only the positive area of linearly interpolated temperature above threshold, including crossings inside sample intervals. All carriers need certification when requested. The UI accepts transit duration, while the API accepts exclusive end time. Charge ceiling transit hours and count confirmed transit minutes only. Pricing and the persisted activity summary disagree with the domain policy. Repair both layers, preserving currency rounding, cancellation handling and repeated-plan semantics. Run bash test/run.sh. The public checks drive Chromium against native HTTP and a real database; each scoring group includes regression safeguards.

Work with the stack you want to practice. Your workspace and timer start after you choose.