feat: Implement multi-tenancy support in middleware and security layers

- Enhanced TenantMiddleware to validate tenant information from JWT tokens.
- Added LicenseValidationMiddleware to check tenant licenses before processing requests.
- Updated security utilities to extract tenant information from tokens and validate company access.
- Introduced CompanyStore to manage active company state and handle company switching in the frontend.
- Modified API routes to include company_id in requests for better resource management.
- Improved logging and error handling throughout the middleware and API layers.
- Updated frontend components to reflect changes in company management and selection.
- Added new API route for fetching user's companies with proper authentication handling.

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

@@ -1,58 +1,63 @@
 """
 DTOs para módulo de autenticación
 """
+
 from pydantic import BaseModel, EmailStr, Field
 from typing import Optional
 
 
 class LoginRequestDTO(BaseModel):
     """DTO para solicitud de login"""
+
     username: str = Field(..., description="Usuario o email")
     password: str = Field(..., min_length=6, description="Contraseña")
     tenant_slug: str = Field(..., description="Slug del tenant")
-    
+
     class Config:
         json_schema_extra = {
             "example": {
                 "username": "usuario@ejemplo.com",
                 "password": "password123",
-                "tenant_slug": "empresa-abc"
+                "tenant_slug": "empresa-abc",
             }
         }
 
 
 class TokenResponseDTO(BaseModel):
     """DTO para respuesta de token"""
+
     access_token: str
     refresh_token: str
     token_type: str = "bearer"
     expires_in: int
-    
+
     class Config:
         json_schema_extra = {
             "example": {
                 "access_token": "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9...",
                 "refresh_token": "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9...",
                 "token_type": "bearer",
-                "expires_in": 3600
+                "expires_in": 3600,
             }
         }
 
 
 class RefreshTokenRequestDTO(BaseModel):
     """DTO para solicitud de refresh token"""
+
     refresh_token: str = Field(..., description="Refresh token")
 
 
 class UserInfoResponseDTO(BaseModel):
     """DTO para información de usuario"""
+
     sub: str
     email: Optional[str] = None
     name: Optional[str] = None
     preferred_username: Optional[str] = None
     tenant_id: Optional[int] = None
     roles: list[str] = []
-    
+
     class Config:
         json_schema_extra = {
             "example": {
@@ -61,25 +66,29 @@ class UserInfoResponseDTO(BaseModel):
                 "name": "Juan Pérez",
                 "preferred_username": "jperez",
                 "tenant_id": 1,
-                "roles": ["user", "admin"]
+                "roles": ["user", "admin"],
             }
         }
 
 
 class LogoutRequestDTO(BaseModel):
     """DTO para solicitud de logout"""
+
     refresh_token: str = Field(..., description="Refresh token para invalidar")
 
 
 class RegisterRequestDTO(BaseModel):
     """DTO para solicitud de registro"""
-    username: str = Field(..., min_length=3, max_length=50, description="Nombre de usuario")
+
+    username: str = Field(
+        ..., min_length=3, max_length=50, description="Nombre de usuario"
+    )
     email: EmailStr = Field(..., description="Email del usuario")
     password: str = Field(..., min_length=8, description="Contraseña")
     first_name: str = Field(..., min_length=2, max_length=50, description="Nombre")
     last_name: str = Field(..., min_length=2, max_length=50, description="Apellido")
     tenant_slug: str = Field(..., description="Slug del tenant")
-    
+
     class Config:
         json_schema_extra = {
             "example": {
@@ -88,54 +97,57 @@ class RegisterRequestDTO(BaseModel):
                 "password": "MiPassword123!",
                 "first_name": "Juan",
                 "last_name": "Pérez",
-                "tenant_slug": "empresa-abc"
+                "tenant_slug": "empresa-abc",
             }
         }
 
 
 class RegisterResponseDTO(BaseModel):
     """DTO para respuesta de registro"""
+
     user_id: str
     username: str
     email: str
     message: str
-    
+
     class Config:
         json_schema_extra = {
             "example": {
                 "user_id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
                 "username": "jperez",
                 "email": "jperez@ejemplo.com",
-                "message": "User registered successfully"
+                "message": "User registered successfully",
             }
         }
 
 
 class ExchangeCodeRequestDTO(BaseModel):
     """DTO para intercambiar authorization code por tokens (OAuth2 flow)"""
+
     code: str = Field(..., description="Authorization code de OAuth2")
     redirect_uri: str = Field(..., description="Redirect URI usado en la autorización")
     tenant_slug: Optional[str] = Field(None, description="Slug del tenant (opcional)")
-    
+
     class Config:
         json_schema_extra = {
             "example": {
                 "code": "eyJhbGciOiJkaXIiLCJlbmMiOiJBMTI4Q0JDLUhTMjU2Ii...",
                 "redirect_uri": "http://localhost:5173/auth/callback",
-                "tenant_slug": "empresa-abc"
+                "tenant_slug": "empresa-abc",
             }
         }
 
 
 class SetCookieRequestDTO(BaseModel):
     """DTO para establecer cookies de autenticación"""
+
     access_token: str = Field(..., description="Access token JWT")
     refresh_token: str = Field(..., description="Refresh token JWT")
-    
+
     class Config:
         json_schema_extra = {
             "example": {
                 "access_token": "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9...",
-                "refresh_token": "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9..."
+                "refresh_token": "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9...",
             }
         }