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/licenses/models.py

@@ -1,8 +1,17 @@
 """
 Modelos ORM para gestión de licencias
 """
+
 from datetime import datetime
-from sqlalchemy import Column, Integer, String, DateTime, Boolean, ForeignKey, Enum as SQLEnum
+from sqlalchemy import (
+    Column,
+    Integer,
+    String,
+    DateTime,
+    Boolean,
+    ForeignKey,
+    Enum as SQLEnum,
+)
 from sqlalchemy.sql import func
 from sqlalchemy.orm import relationship
 from sqlalchemy.orm import Mapped, mapped_column
@@ -12,6 +21,7 @@ import enum
 
 class LicensePlan(enum.Enum):
     """Planes de licencia disponibles"""
+
     FREE = "free"
     BASIC = "basic"
     PROFESSIONAL = "professional"
@@ -20,6 +30,7 @@ class LicensePlan(enum.Enum):
 
 class LicenseStatus(enum.Enum):
     """Estados de licencia"""
+
     ACTIVE = "active"
     EXPIRED = "expired"
     SUSPENDED = "suspended"
@@ -31,36 +42,45 @@ class License(Base):
     """
     Modelo de Licencia - Control de planes y límites por tenant
     """
+
     __tablename__ = "licenses"
     __table_args__ = {"schema": "a76"}
-    
+
     id = Column(Integer, primary_key=True, index=True)
-    tenant_id = Column(Integer, ForeignKey("a76.tenants.id"), nullable=False, unique=True, index=True)
-    
+    tenant_id = Column(
+        Integer, ForeignKey("a76.tenants.id"), nullable=False, unique=True, index=True
+    )
+
     # Plan y características
     plan = Column(SQLEnum(LicensePlan), default=LicensePlan.FREE, nullable=False)
-    status = Column(SQLEnum(LicenseStatus), default=LicenseStatus.PENDING, nullable=False)
-    
+    status = Column(
+        SQLEnum(LicenseStatus), default=LicenseStatus.PENDING, nullable=False
+    )
+
     # Límites del plan
     max_users = Column(Integer, default=5, nullable=False)
     max_storage_gb = Column(Integer, default=10, nullable=False)
     max_monthly_operations = Column(Integer, default=1000, nullable=False)
-    
+
     # Features habilitadas (booleans)
     feature_api_access = Column(Boolean, default=True)
     feature_advanced_reports = Column(Boolean, default=False)
     feature_integrations = Column(Boolean, default=False)
     feature_dedicated_support = Column(Boolean, default=False)
-    
+
     # Vigencia
     starts_at = Column(DateTime(timezone=True), nullable=False)
     expires_at = Column(DateTime(timezone=True), nullable=False)
-    
+
     # Timestamps
-    created_at: Mapped[datetime] = mapped_column(DateTime, nullable=False, default=func.now())
-    updated_at: Mapped[datetime] = mapped_column(DateTime, nullable=False, default=func.now(), onupdate=func.now())
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime, nullable=False, default=func.now()
+    )
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime, nullable=False, default=func.now(), onupdate=func.now()
+    )
     deleted_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
-    
+
     def __repr__(self):
         return f"<License(tenant_id={self.tenant_id}, plan={self.plan.value}, status={self.status.value})>"
 
@@ -69,25 +89,32 @@ class LicenseUsage(Base):
     """
     Modelo para tracking de uso de licencia
     """
+
     __tablename__ = "license_usage"
     __table_args__ = {"schema": "a76"}
-    
+
     id = Column(Integer, primary_key=True, index=True)
-    tenant_id = Column(Integer, ForeignKey("a76.tenants.id"), nullable=False, index=True)
-    
+    tenant_id = Column(
+        Integer, ForeignKey("a76.tenants.id"), nullable=False, index=True
+    )
+
     # Métricas de uso
     period_start = Column(DateTime(timezone=True), nullable=False)
     period_end = Column(DateTime(timezone=True), nullable=False)
-    
+
     active_users = Column(Integer, default=0)
     storage_used_gb = Column(Integer, default=0)
     operations_count = Column(Integer, default=0)
     api_calls_count = Column(Integer, default=0)
-    
+
     # Timestamps
-    created_at: Mapped[datetime] = mapped_column(DateTime, nullable=False, default=func.now())
-    updated_at: Mapped[datetime] = mapped_column(DateTime, nullable=False, default=func.now(), onupdate=func.now())
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime, nullable=False, default=func.now()
+    )
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime, nullable=False, default=func.now(), onupdate=func.now()
+    )
     deleted_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
-    
+
     def __repr__(self):
         return f"<LicenseUsage(tenant_id={self.tenant_id}, operations={self.operations_count})>"