Wire smr_inflation_annual / sale_inflation_annual into _build_monthly_cashflow
(monthly-compounded escalation of СМР costs vs sale revenue), gated by module
constants _SMR_INFLATION_ANNUAL / _SALE_INFLATION_ANNUAL = 0.0. At default the
factor (1+0)**t == 1.0 → byte-identical cashflow → existing Σ cashflow ==
net_profit invariant and all 57 prior tests unchanged (deep-review verified
IEEE-754 identity + proration-denominator guard). Land not escalated (t0 lump);
marketing/VAT/tax prorated on escalated revenue (total preserved, only retimed).
Capability разведено+протестировано, OFF until calibrated indices + a decision
to reframe the headline today-money invariant (nominal DCF vs real БДР). No
schema/API/codegen change. +10 tests (zero-diff, compounding, NPV monotonicity,
land-excluded, nominal-Σ-diverges-when-on).
Refs #1881
