Add file-based Bubble, Stripe, and OpenRouter importers; usage attribution,
cost allocation, pricing simulator, credit wallets, and recommendations in the
dashboard API. Document whynot-design UI workflow and archive the finished
workplan with all ten tasks marked done.
Convert legacy AdaptivePricing-MVP-Workplan.md into
ADAPTIVE-WP-0002-economic-observatory-mvp.md with ADR-001 frontmatter,
eight sprint task blocks, and State Hub workstream registration. Mark
bootstrap task T03 done after seeding the first implementation workplan.