Implement comparable LTV engine and close WP-0005

projects/coulomb-pricing/observatory/api.py

@@ -9,6 +9,7 @@ from .economics import build_liquidity_summary, build_snapshot
 from .load import (
     default_data_dir,
     latest_period,
+    load_ltv_scenarios,
     load_budget,
     load_expense_records,
     load_market_signals,
@@ -88,12 +89,19 @@ def build_dashboard_payload(data_dir: Path | None = None, period: str | None = N
     market_raw = load_market_signals(root)
     usage_records = load_usage_records(root)
     usage_summary = build_usage_summary(usage_records, target_period)
+    ltv_scenarios = load_ltv_scenarios(root)
     cost_floor = build_cost_floor(snapshot, models)
     value_range = build_value_range_view(value_range_raw, snapshot, product, models)
     market_price = build_market_price_view(market_raw)
     cost_allocation = build_cost_allocation(snapshot, usage_records)
     ai_cost_per_member = usage_summary["cost_per_active_user_eur"]
-    simulations = build_pricing_simulations(snapshot, models, ai_cost_per_member)
+    simulations = build_pricing_simulations(
+        snapshot,
+        models,
+        ai_cost_per_member,
+        usage_records=usage_records,
+        scenario_catalog=ltv_scenarios,
+    )
     boundary_validation = build_boundary_validation(snapshot, models, usage_records)
     credit_wallets = load_credit_wallets(root)
     credit_summary = build_credit_summary(