[Parity]: [P3] Verify the 1994 maintenance dollar table and decide Classic's charge cadence (full per canon period vs the 1/10 rescale)

From the classic-economy-canon party and source sweep of 2026-07-22 (_bmad-output/planning-artifacts/design/spec-classic-economy-canon-cadence-2026-07-22.md §3.4 and §6, backlog row canon-maintenance-table).

The 1994 original charged maintenance in full amounts per quarter (the FAQ lineage lists per-quarter figures per facility). Verticopolis charges modern-tuned monthly values (ECON.maintenancePerCarMonthly, serviceMaintenanceMonthly) rescaled to 1/10 per canon 3-day period (income-invariant, arch-classic-calendar-parity §3). With office rent now collecting the full canon lump each canon quarter (spec above), Classic upkeep is the remaining economy line still on the invariant rescale.

Work: verify the canon maintenance dollar table against period sources (the FAQ maintenance chart, and the manual if it ever becomes readable), then decide whether Classic charges the full canon amounts each canon period through the same quarterlyRentScale-style seam, replacing the 1/10 rescale for Classic only. Modern keeps the rescale regardless.

Start with _bmad-output/planning-artifacts/design/spec-classic-economy-canon-cadence-2026-07-22.md, especially §§3.4 and 6 and the canon-maintenance-table backlog row. Verify the 1994 maintenance figures against the FAQ maintenance chart and the manual if readable, then inspect ECON.maintenancePerCarMonthly, serviceMaintenanceMonthly, and the quarterlyRentScale-style seam. Done means the canon table is verified, Classic’s cadence is decided and reflected, and Modern retains its rescale.