feat: Implement currency management with models, routes, and UI updates; add backfill script for existing records

routes/ui.py

@@ -18,11 +18,14 @@ from models.scenario import Scenario
 from models.simulation_result import SimulationResult
 from routes.dependencies import get_db
 from services.reporting import generate_report
+from models.currency import Currency
 
 
 CURRENCY_CHOICES: list[Dict[str, Any]] = [
     {"id": "USD", "name": "US Dollar (USD)"},
     {"id": "EUR", "name": "Euro (EUR)"},
+    {"id": "CLP", "name": "Chilean Peso (CLP)"},
+    {"id": "RMB", "name": "Chinese Yuan (RMB)"},
     {"id": "GBP", "name": "British Pound (GBP)"},
     {"id": "CAD", "name": "Canadian Dollar (CAD)"},
     {"id": "AUD", "name": "Australian Dollar (AUD)"},
@@ -140,6 +143,14 @@ def _load_costs(db: Session) -> Dict[str, Any]:
     }
 
 
+def _load_currencies(db: Session) -> Dict[str, Any]:
+    items: list[Dict[str, Any]] = []
+    for c in db.query(Currency).filter_by(is_active=True).order_by(Currency.code).all():
+        items.append(
+            {"id": c.code, "name": f"{c.name} ({c.code})", "symbol": c.symbol})
+    return {"currency_options": items}
+
+
 def _load_consumption(db: Session) -> Dict[str, Any]:
     grouped: defaultdict[int, list[Dict[str, Any]]] = defaultdict(list)
     for record in (
@@ -571,7 +582,7 @@ async def costs_view(request: Request, db: Session = Depends(get_db)):
     context: Dict[str, Any] = {}
     context.update(_load_scenarios(db))
     context.update(_load_costs(db))
-    context["currency_options"] = CURRENCY_CHOICES
+    context.update(_load_currencies(db))
     return _render(request, "costs.html", context)