Dayrate partial settlement proposal

Review the independently proposed patch below, including its unchanged callers. Prorate active subscriptions inside their complete billing cycle. Enforce licensed seat limits and require authoritative approval for trial credits. Charge the sum of seat-day fractions rounded once to the nearest cent, with positive half cents rounded upward. Dashboard entitlement is the number of confirmed seat-days. The settlement calculation and frontend metric both violate the contract. Preserve rounding, unit conversion, cancellation and repeated-plan behavior while repairing them. The repository includes a resource specification inspector, native database, booking timeline and server-derived insights. Run bash test/run.sh. Browser checks include mobile confirmation, durable reload, independent HTTP probes and regression safeguards.

Review focus: full-stack-workflow