internal-platform-scope-drops-40pct-of-architecture

Declaring a BI platform internal-only (vs. commercial SaaS) eliminates billing, Stripe, multi-tenancy, trial flows, marketing site, and public dashboards from v1. This was an explicit mid-session reframe on R-Same and should be asserted at the start of any similar build to avoid over-engineering. The economic buyer and primary user being the same person (CTO) also removes a separate sales-motion surface.