Update project files

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

backend/app/quality.py

@@ -18,7 +18,7 @@ def validate_requirement(node: RequirementNode, children: list[RequirementNode])
     traceable = True
     if node.node_type != NodeType.pillar:
         if not node.parent_id:
-            errors.append("Non-pillar node must have a parent (traceability)")
+            errors.append("Orphaned node — must be assigned a parent for traceability")
             traceable = False
         if not node.description:
             warnings.append("Missing description — hard to trace how this serves parent")