Fix test failures and workload/websocket behavior

backend/app/models/project_template.py

@@ -5,7 +5,7 @@ that can be used to quickly set up new projects.
 """
 import uuid
 from sqlalchemy import Column, String, Text, Boolean, DateTime, ForeignKey, JSON
-from sqlalchemy.orm import relationship
+from sqlalchemy.orm import relationship, synonym
 from sqlalchemy.sql import func
 from app.core.database import Base
 
@@ -53,6 +53,10 @@ class ProjectTemplate(Base):
     # Relationships
     owner = relationship("User", foreign_keys=[owner_id])
 
+    # Backward-compatible aliases for older code/tests
+    created_by = synonym("owner_id")
+    default_statuses = synonym("task_statuses")
+
 
 # Default template data for system templates
 SYSTEM_TEMPLATES = [