chore: import upstream snapshot with attribution

apps/sim/tools/dspy/utils.ts

@@ -0,0 +1,28 @@
+import type { DSPyTrajectoryStep } from '@/tools/dspy/types'
+
+/**
+ * Parse DSPy ReAct trajectory format into structured steps
+ * DSPy trajectory format: { thought_0, tool_name_0, tool_args_0, observation_0, thought_1, ... }
+ */
+export function parseTrajectory(trajectory: Record<string, unknown>): DSPyTrajectoryStep[] {
+  const steps: DSPyTrajectoryStep[] = []
+  let idx = 0
+
+  while (
+    trajectory[`thought_${idx}`] !== undefined ||
+    trajectory[`tool_name_${idx}`] !== undefined
+  ) {
+    steps.push({
+      thought: (trajectory[`thought_${idx}`] as string) ?? '',
+      toolName: (trajectory[`tool_name_${idx}`] as string) ?? '',
+      toolArgs: (trajectory[`tool_args_${idx}`] as Record<string, unknown>) ?? {},
+      observation:
+        trajectory[`observation_${idx}`] !== undefined
+          ? String(trajectory[`observation_${idx}`])
+          : null,
+    })
+    idx++
+  }
+
+  return steps
+}