Preserve first matching workflow step for duplicate original names

Signed-off-by: Rudy Celekli <47457359+rudycelekli@users.noreply.github.com>

testing/testing-workflow-optimizer.md

@@ -182,12 +182,14 @@ class WorkflowOptimizer:
                                  opportunities: List[Dict]) -> List[ProcessStep]:
         """Create optimized future state workflow"""
         optimized_steps = current_steps.copy()
-        # Opportunities refer to the original names; display names change below.
-        step_indexes = {step.name: i for i, step in enumerate(current_steps)}
         
         for opportunity in opportunities:
             step_name = opportunity["step"]
-            step_index = step_indexes[step_name]
+            # Resolve against original names; earlier improvements rename the copy.
+            step_index = next(
+                i for i, step in enumerate(current_steps)
+                if step.name == step_name
+            )
             
             current_step = optimized_steps[step_index]