feat: add fixed asset classes management page and embed functionality

- Implemented a new page for managing fixed asset classes with full CRUD functionality.
- Added filtering options for searching classes by code, description, type, and fraction.
- Integrated dialogs for inserting, editing, and deleting classes with validation.
- Enhanced error handling and user feedback with toast notifications.
- Created an embedded iframe for the fixed asset classes page in the merchandise section.

backend/api/v1/modules/a76/classes/dto.py

@@ -4,6 +4,7 @@ Reemplaza schemas.py siguiendo enfoque DDD y estilo NestJS
 """
 
 from datetime import datetime
+from decimal import Decimal
 from typing import Optional
 
 from pydantic import BaseModel, ConfigDict, Field
@@ -14,22 +15,22 @@ class ClassCreateDTO(BaseModel):
 
     client_id: int = Field(..., description="Client key")
     class_code: str = Field(..., max_length=8, description="Class code")
-    description_es: Optional[str] = Field(
-        None, max_length=500, description="Description in Spanish"
+    description_es: str = Field(
+        ..., max_length=500, description="Description in Spanish (required)"
     )
     description_en: Optional[str] = Field(
         None, max_length=500, description="Description in English"
     )
-    material_key: Optional[str] = Field(
-        None,
+    material_key: str = Field(
+        ...,
         max_length=10,
-        description="Material key (homologated TIPOMAT/TIPOMATEQUIPO)",
+        description="Material key - Fixed Asset Type (required)",
     )
-    unit_of_measure: Optional[str] = Field(
-        None, max_length=5, description="Unit of measure (homologated UNIMEDIDA)"
+    unit_of_measure: str = Field(
+        ..., max_length=5, description="Unit of measure - U.M. comercial (required)"
     )
-    fraction: Optional[str] = Field(
-        None, max_length=10, description="Mexican tariff fraction"
+    fraction: str = Field(
+        ..., max_length=20, description="Mexican tariff fraction (required)"
     )
     us_fraction: Optional[str] = Field(
         None, max_length=16, description="US tariff fraction"
@@ -48,9 +49,45 @@ class ClassCreateDTO(BaseModel):
         from_attributes = True
 
 
+class ClassCreateDTOFA(ClassCreateDTO):
+    """DTO para crear una clase de activo fijo (clase base + extensión FA)"""
+    
+    # Campos específicos de activos fijos (a24.fa_classes)
+    import_tariff_code: Optional[str] = Field(
+        None, max_length=10, description="Código de fracción de importación"
+    )
+    import_tariff_type: Optional[str] = Field(
+        None, max_length=6, description="Tipo de fracción de importación"
+    )
+    export_tariff_code: Optional[str] = Field(
+        None, max_length=10, description="Código de fracción de exportación"
+    )
+    export_tariff_type: Optional[str] = Field(
+        None, max_length=6, description="Tipo de fracción de exportación"
+    )
+    depreciation_rate: Optional[Decimal] = Field(
+        None, ge=0, le=100, description="Tasa de depreciación anual (%)"
+    )
+    fda_code: Optional[str] = Field(
+        None, max_length=20, description="Código FDA"
+    )
+    eccn_code: Optional[str] = Field(
+        None, max_length=20, description="Código ECCN"
+    )
+    class_enabled: Optional[bool] = Field(
+        True, description="Indica si la clase está habilitada"
+    )
+
+    class Config:
+        from_attributes = True
+
+
 class ClassUpdateDTO(BaseModel):
     """DTO para actualizar una clase"""
 
+    class_code: Optional[str] = Field(
+        None, max_length=8, description="Class code"
+    )
     description_es: Optional[str] = Field(
         None, max_length=500, description="Description in Spanish"
     )
@@ -66,7 +103,7 @@ class ClassUpdateDTO(BaseModel):
         None, max_length=5, description="Unit of measure (homologated UNIMEDIDA)"
     )
     fraction: Optional[str] = Field(
-        None, max_length=10, description="Mexican tariff fraction"
+        None, max_length=20, description="Mexican tariff fraction"
     )
     us_fraction: Optional[str] = Field(
         None, max_length=16, description="US tariff fraction"
@@ -81,8 +118,7 @@ class ClassUpdateDTO(BaseModel):
         None, max_length=4, description="IVA exempt fraction"
     )
 
-    class Config:
-        from_attributes = True
+    model_config = ConfigDict(from_attributes=True, extra='forbid')  # Explicitly forbid extra fields
 
 
 class ClassResponseDTO(BaseModel):
@@ -108,6 +144,23 @@ class ClassResponseDTO(BaseModel):
     model_config = ConfigDict(from_attributes=True)
 
 
+class ClassResponseDTOFA(ClassResponseDTO):
+    """DTO para respuesta de clase de activo fijo (incluye campos FA)"""
+    
+    # Campos de a24.fa_classes
+    fa_id: Optional[int] = None
+    import_tariff_code: Optional[str] = None
+    import_tariff_type: Optional[str] = None
+    export_tariff_code: Optional[str] = None
+    export_tariff_type: Optional[str] = None
+    depreciation_rate: Optional[Decimal] = None
+    fda_code: Optional[str] = None
+    eccn_code: Optional[str] = None
+    class_enabled: Optional[bool] = None
+
+    model_config = ConfigDict(from_attributes=True)
+
+
 class ClassBasicDTO(BaseModel):
     """DTO para información básica de clase"""
 
@@ -147,4 +200,4 @@ class ClassSearchDTO(BaseModel):
     )
 
     class Config:
-        from_attributes = True
+        from_attributes = True