feat: Add currency and unit support across models, routes, and templates; enhance UI for consumption, costs, and production

routes/consumption.py

@@ -1,7 +1,7 @@
 from typing import List, Optional
 
 from fastapi import APIRouter, Depends, status
-from pydantic import BaseModel, ConfigDict, PositiveFloat
+from pydantic import BaseModel, ConfigDict, PositiveFloat, field_validator
 from sqlalchemy.orm import Session
 
 from models.consumption import Consumption
@@ -9,10 +9,22 @@ from routes.dependencies import get_db
 
 
 router = APIRouter(prefix="/api/consumption", tags=["Consumption"])
+
+
 class ConsumptionBase(BaseModel):
     scenario_id: int
     amount: PositiveFloat
     description: Optional[str] = None
+    unit_name: Optional[str] = None
+    unit_symbol: Optional[str] = None
+
+    @field_validator("unit_name", "unit_symbol")
+    @classmethod
+    def _normalize_text(cls, value: Optional[str]) -> Optional[str]:
+        if value is None:
+            return None
+        stripped = value.strip()
+        return stripped or None
 
 
 class ConsumptionCreate(ConsumptionBase):