feat: stabilize KYC, international assets and multi-currency schema

- Split mother's name in KYC (last/first)
- Added mileage_unit and fuel_type to Assets
- Expanded AssetCost for international VAT and original currency
- Fixed SQLAlchemy IndexError in asset catalog lookup
- Added exchange_rate and ratings tables to models

backend/app/schemas/asset.py

@@ -1,27 +1,43 @@
-from pydantic import BaseModel, Field, field_validator
+from pydantic import BaseModel, Field
 from typing import Optional
 from uuid import UUID
 from datetime import datetime
 
 class AssetCreate(BaseModel):
-    catalog_id: int = Field(..., description="A kiválasztott katalógus elem ID-ja")
-    vin: str = Field(..., min_length=17, max_length=17, description="17 karakteres alvázszám")
-    license_plate: str = Field(..., min_length=1, max_length=20)
-    name: Optional[str] = Field(None, description="Egyedi elnevezés (pl. 'Céges furgon')")
-    organization_id: int = Field(..., description="Melyik flottába kerüljön")
+    # Alapadatok
+    make: str = Field(..., example="Ford")
+    model: str = Field(..., example="Mondeo")
+    vin: str = Field(..., min_length=17, max_length=17, description="Alvázszám")
+    license_plate: Optional[str] = Field(None, max_length=20, example="RRR-555")
     
-    # Opcionális: Kezdő km óra állás, szín, stb. később bővíthető
+    # Nemzetközi és Admin szempontok
+    vehicle_class: str = Field("land", description="land, sea, air - Admin által bővíthető")
+    fuel_type: str = Field(..., example="Diesel", description="Admin által definiált üzemanyag típusok")
+    
+    # Technikai adatok
+    engine_description: Optional[str] = Field(None, example="2.0 TDCI")
+    year_of_manufacture: int = Field(..., ge=1900, le=2100)
+    
+    # Kezdő állapot
+    current_reading: int = Field(..., ge=0, description="Kezdő km/üzemóra állás")
+    reading_unit: str = Field("km", description="km, miles, hours - Nemzetközi beállítás")
+    
+    # Felhasználói adatok
+    name: Optional[str] = Field(None, description="Egyedi elnevezés")
 
 class AssetResponse(BaseModel):
     id: UUID
-    uai: str
-    catalog_id: int
-    organization_id: int
-    name: str
-    asset_type: str
-    current_plate_number: str
-    status: str
+    catalog_id: Optional[int]
+    vin: str
+    license_plate: Optional[str] = None # JAVÍTVA: Lehet None a válaszban
+    name: Optional[str] = None
+    fuel_type: str
+    vehicle_class: str
+    is_verified: bool
+    year_of_manufacture: int
+    system_mileage: int
+    quality_index: float
     created_at: datetime
-    
+
     class Config:
         from_attributes = True