Generic adaptive-pricing framework concepts belong in the repository root (INTENT.md, docs/, research/, registry/). Execution tracking: workplans/ADAPTIVE-WP-0002-economic-observatory-mvp.md.

Liquidity and cost requirements: REQUIREMENTS.md.

Sprint 1 — Economic Foundations

The observatory/ package reads expense and payment record ledgers and computes all totals programmatically (ledger.py → economics.py).

Ledger	File
Budget (€1,000 start)	`data/budget.json`
Expense records	`data/expense_records.json`
Payment records	`data/payment_records.json`
Product model	`data/product.json`
Pricing models	`data/pricing-models.json`
Membership	`data/membership.json`

Current reality: infrastructure from January 2025 — domains €6.75/mo, coulombcore hosting €13.99/mo (from Jan 2025), railiance01 hosting €8.99/mo (from Mar 2026). Member tegwick pays €8.99/mo (Stripe fee €0.44, net payout €8.55 to binky-hedgehog) from November 2025. Customer cost-pass-through billing is not active.

Commands

cd projects/coulomb-pricing
make test
make design                             # pull whynot-design tokens/CSS/components
make design REF=v0.2.1                  # bump to a tag or commit
python3 -m observatory --period 2026-06
python3 -m observatory --period 2026-06 --output reports/economics-2026-06.md
make serve

Open http://127.0.0.1:8765/ for the Economic Observatory UI (served from ui/, data via /api/dashboard). The UI consumes whynot-design (Layer 1 CSS

Layer 2 <wn-*> components) from ui/vendor/whynot-design/ — re-run the sync script after bumping the pinned ref in .whynot-design-ref. Claude atelier mock (reference only): https://claude.ai/design/p/fb2eef8c-c1fc-4c75-bff4-3782552e5511

Manual ledgers will be replaced by Bubble (Sprint 2), Stripe (Sprint 3), and OpenRouter (Sprint 4) importers.