feat(crm): catálogos Clientes/Prospectos (enriquecido) y Proveedores + direcciones/documentos

Alinea el dominio al spec de catálogos:
- accounts (Clientes/Prospectos): tipo registro/persona, CURP, clasificación
  comercial, bloque fiscal (régimen, CFDI, pago, crédito), auditoría, notas internas
- suppliers (Proveedores): clasificación múltiple, cobertura, países/puertos/
  aeropuertos/aduanas (JSON), fiscal
- addresses y documents: tablas compartidas con FK a cliente o proveedor
- contacts enriquecidos (extensión, whatsapp, área, flags "recibe…", supplier_id)
- migración a7b8c9d0e1f2 (ALTER + CREATE) con downgrade completo
- permisos supplier/address/document; seed de datos actualizado
- 39 tests pytest en verde

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

backend/api/v1/modules/crm/addresses/dto.py

@@ -0,0 +1,47 @@
+from datetime import datetime
+
+from pydantic import BaseModel, ConfigDict, Field
+
+
+class AddressBase(BaseModel):
+    account_id: int | None = None
+    supplier_id: int | None = None
+    address_type: str = Field("fiscal", max_length=20)
+    street: str | None = Field(None, max_length=255)
+    ext_number: str | None = Field(None, max_length=30)
+    int_number: str | None = Field(None, max_length=30)
+    neighborhood: str | None = Field(None, max_length=120)
+    postal_code: str | None = Field(None, max_length=10)
+    city: str | None = Field(None, max_length=120)
+    state: str | None = Field(None, max_length=120)
+    country: str | None = Field("MX", max_length=2)
+    reference_notes: str | None = None
+    is_primary: bool = False
+
+
+class AddressCreate(AddressBase):
+    pass
+
+
+class AddressUpdate(BaseModel):
+    address_type: str | None = Field(None, max_length=20)
+    street: str | None = Field(None, max_length=255)
+    ext_number: str | None = Field(None, max_length=30)
+    int_number: str | None = Field(None, max_length=30)
+    neighborhood: str | None = Field(None, max_length=120)
+    postal_code: str | None = Field(None, max_length=10)
+    city: str | None = Field(None, max_length=120)
+    state: str | None = Field(None, max_length=120)
+    country: str | None = Field(None, max_length=2)
+    reference_notes: str | None = None
+    is_primary: bool | None = None
+
+
+class AddressResponse(AddressBase):
+    model_config = ConfigDict(from_attributes=True)
+
+    id: int
+    tenant_id: int
+    company_id: int
+    created_at: datetime
+    updated_at: datetime