fix: wrap workflow execution errors with node and workflow context

Errors thrown during ctx.run() now include the node type, node name,
and parent workflow name so failures are traceable to their source.

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

Author: cevian

packages/core/src/workflow.ts

@@ -59,17 +59,24 @@ function createDurableContext(config?: WorkflowRuntimeConfig): WorkflowContext {
       _currentNodeName = executable.name;
       _currentIntegrations = executable.integrations;
 
-      if (executable.type === "workflow" || executable.type === "agent") {
-        // For workflows and agents, call execute directly (they handle their own DBOS registration)
-        // This allows proper child workflow tracking
-        return executable.execute(ctx, validated);
-      }
+      try {
+        if (executable.type === "workflow" || executable.type === "agent") {
+          // For workflows and agents, call execute directly (they handle their own DBOS registration)
+          // This allows proper child workflow tracking
+          return await executable.execute(ctx, validated);
+        }
 
-      // For nodes, wrap execution in DBOS step for durability
-      return DBOS.runStep(
-        async () => executable.execute(ctx, validated),
-        { name: executable.name }
-      );
+        // For nodes, wrap execution in DBOS step for durability
+        return await DBOS.runStep(
+          async () => executable.execute(ctx, validated),
+          { name: executable.name }
+        );
+      } catch (err) {
+        const msg = err instanceof Error ? err.message : String(err);
+        throw new Error(
+          `Error in ${executable.type} "${executable.name}" (workflow "${config?.workflowName ?? "unknown"}"): ${msg}`,
+        );
+      }
     },
 
     getConnection: async (integrationId: string): Promise<ConnectionCredentials> => {