FEAT: Corporate onboarding implemented with Tax ID validation (HU) and isolated NAS storage

backend/app/schemas/asset.py

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+from pydantic import BaseModel, Field, field_validator
+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")
+    
+    # Opcionális: Kezdő km óra állás, szín, stb. később bővíthető
+
+class AssetResponse(BaseModel):
+    id: UUID
+    uai: str
+    catalog_id: int
+    organization_id: int
+    name: str
+    asset_type: str
+    current_plate_number: str
+    status: str
+    created_at: datetime
+    
+    class Config:
+        from_attributes = True

backend/app/schemas/organization.py

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+from pydantic import BaseModel, Field
+from typing import Optional, List
+
+class ContactCreate(BaseModel):
+    full_name: str
+    email: str
+    phone: Optional[str]
+    contact_type: str = "primary"
+
+class CorpOnboardIn(BaseModel):
+    name: str
+    tax_number: str
+    country_code: str = "HU"
+    reg_number: Optional[str]
+    headquarters_address: str
+    contacts: Optional[List[ContactCreate]] = []
+
+class CorpOnboardResponse(BaseModel):
+    organization_id: int
+    status: str = "pending_verification"