Adapt economics dashboard to sole-member zero-cost reality

Update membership, revenue, and cost registries to one active member with
no running costs. Refresh dashboard report and tests for €8.99 revenue and
100% gross margin.

projects/coulomb-pricing/data/costs.json

@@ -1,64 +1,9 @@
 {
   "version": 1,
   "period": "2026-06",
-  "entries": [
-    {
-      "id": "bubble-subscription",
-      "name": "Bubble.io platform",
-      "category": "fixed",
-      "amount": "35.00",
-      "currency": "USD",
-      "cadence": "monthly",
-      "allocation": "flat"
-    },
-    {
-      "id": "domains",
-      "name": "Domains",
-      "category": "fixed",
-      "amount": "15.00",
-      "currency": "EUR",
-      "cadence": "monthly",
-      "allocation": "flat"
-    },
-    {
-      "id": "operational-overhead",
-      "name": "Operational overhead",
-      "category": "fixed",
-      "amount": "25.00",
-      "currency": "EUR",
-      "cadence": "monthly",
-      "allocation": "flat"
-    },
-    {
-      "id": "stripe-percentage",
-      "name": "Stripe percentage fee",
-      "category": "variable",
-      "amount": "0.015",
-      "currency": "ratio",
-      "cadence": "per_transaction",
-      "allocation": "percent_of_gross_revenue"
-    },
-    {
-      "id": "stripe-fixed",
-      "name": "Stripe fixed fee",
-      "category": "variable",
-      "amount": "0.25",
-      "currency": "EUR",
-      "cadence": "per_transaction",
-      "allocation": "per_active_member"
-    },
-    {
-      "id": "openrouter-ai",
-      "name": "OpenRouter AI consumption",
-      "category": "variable",
-      "amount": "0.00",
-      "currency": "EUR",
-      "cadence": "monthly",
-      "allocation": "flat",
-      "note": "Populated in Sprint 4 after usage import"
-    }
-  ],
+  "entries": [],
   "fx_rates": {
     "USD/EUR": "0.92"
-  }
+  },
+  "note": "No running costs at present. Future fixed/variable lines (Bubble, Stripe, OpenRouter) added as they become payable."
 }

projects/coulomb-pricing/data/membership.json

@@ -1,40 +1,16 @@
 {
   "version": 1,
-  "snapshot_date": "2026-06-21",
+  "snapshot_date": "2026-06-22",
   "members": [
     {
-      "id": "member-001",
+      "id": "member-founder",
       "external_id": null,
       "status": "active",
       "joined_at": "2025-11-03",
       "plan_id": "flat-899-eur-monthly",
-      "source": "seed"
-    },
-    {
-      "id": "member-002",
-      "external_id": null,
-      "status": "active",
-      "joined_at": "2026-01-15",
-      "plan_id": "flat-899-eur-monthly",
-      "source": "seed"
-    },
-    {
-      "id": "member-003",
-      "external_id": null,
-      "status": "active",
-      "joined_at": "2026-03-28",
-      "plan_id": "flat-899-eur-monthly",
-      "source": "seed"
-    },
-    {
-      "id": "member-004",
-      "external_id": null,
-      "status": "churned",
-      "joined_at": "2025-08-10",
-      "churned_at": "2026-02-01",
-      "plan_id": "flat-899-eur-monthly",
-      "source": "seed"
+      "source": "manual",
+      "note": "Sole active member (founder)"
     }
   ],
-  "note": "Seed data for Sprint 1; replaced by Bubble importer in Sprint 2"
+  "note": "Current reality: one active member. Bubble importer (Sprint 2) will sync live data."
 }

projects/coulomb-pricing/data/revenue.json

@@ -2,15 +2,15 @@
   "version": 1,
   "entries": [
     {
-      "id": "rev-2026-06-estimate",
+      "id": "rev-2026-06-founder",
       "period": "2026-06",
-      "gross_amount": "80.91",
-      "fees_amount": "2.46",
+      "gross_amount": "8.99",
+      "fees_amount": "0.00",
       "refunds_amount": "0.00",
-      "net_amount": "78.45",
+      "net_amount": "8.99",
       "currency": "EUR",
-      "source": "manual_estimate",
-      "note": "Seed estimate for Sprint 1; replaced by Stripe sync in Sprint 3"
+      "source": "manual",
+      "note": "Single-member subscription; Stripe sync in Sprint 3"
     }
   ]
 }