Remove obsolete customer endpoint and update related documentation

- Deleted the `/admin/v1/customers/{id}/with-companies` endpoint from the API documentation and Swagger files to streamline the API structure.
- Updated the router to remove the corresponding route registration for the deprecated endpoint.
- Enhanced the company repository and service to support batch retrieval of companies by IDs, improving efficiency in data handling.
- Adjusted customer service methods to utilize the new batch retrieval functionality for loading companies associated with customers.
- Improved logging practices to provide better traceability for company retrieval operations.

internal/company/repository.go

@@ -8,6 +8,7 @@ import (
 	mongopkg "tm/pkg/mongo"
 
 	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/bson/primitive"
 )
 
 // Repository defines the interface for company data operations
@@ -17,6 +18,7 @@ type Repository interface {
 	GetByName(ctx context.Context, name string) (*Company, error)
 	GetByRegistrationNumber(ctx context.Context, registrationNumber string) (*Company, error)
 	GetByTaxID(ctx context.Context, taxID string) (*Company, error)
+	GetByIDs(ctx context.Context, ids []string) ([]*Company, error)
 	Update(ctx context.Context, company *Company) error
 	Delete(ctx context.Context, id string) error
 	List(ctx context.Context, limit, offset int) ([]*Company, error)
@@ -184,6 +186,54 @@ func (r *companyRepository) GetByTaxID(ctx context.Context, taxID string) (*Comp
 	return company, nil
 }
 
+// GetByIDs retrieves multiple companies by their IDs
+func (r *companyRepository) GetByIDs(ctx context.Context, ids []string) ([]*Company, error) {
+	if len(ids) == 0 {
+		return []*Company{}, nil
+	}
+
+	// Convert string IDs to ObjectIDs for MongoDB query
+	objectIDs := make([]interface{}, len(ids))
+	for i, id := range ids {
+		objectID, err := primitive.ObjectIDFromHex(id)
+		if err != nil {
+			r.logger.Warn("Invalid company ID format", map[string]interface{}{
+				"id":    id,
+				"error": err.Error(),
+			})
+			continue
+		}
+		objectIDs[i] = objectID
+	}
+
+	if len(objectIDs) == 0 {
+		return []*Company{}, nil
+	}
+
+	filter := bson.M{"_id": bson.M{"$in": objectIDs}}
+	companies, err := r.ormRepo.FindMany(ctx, filter, len(ids))
+	if err != nil {
+		r.logger.Error("Failed to get companies by IDs", map[string]interface{}{
+			"error": err.Error(),
+			"ids":   ids,
+		})
+		return nil, err
+	}
+
+	// Convert to pointer slice
+	result := make([]*Company, len(companies))
+	for i := range companies {
+		result[i] = &companies[i]
+	}
+
+	r.logger.Info("Retrieved companies by IDs", map[string]interface{}{
+		"requested_count": len(ids),
+		"found_count":     len(result),
+	})
+
+	return result, nil
+}
+
 // Update updates a company
 func (r *companyRepository) Update(ctx context.Context, company *Company) error {
 	// Set updated timestamp using Unix timestamp