fix(agents): preserve sessions fallback errors

vincentkoc · vincentkoc · commit 798691779bee · 2026-05-27T07:54:24.000+02:00
diff --git a/src/agents/tools/sessions-send-tool.ts b/src/agents/tools/sessions-send-tool.ts
@@ -231,7 +231,9 @@ async function startAgentRun(params: {
       } catch (err) {
         const queueSummary =
           formatEmbeddedPiQueueFailureSummary(queueOutcome) ?? "active run queue rejected";
-        throw new Error(`${queueSummary}; fallback_failed error=${formatErrorMessage(err)}`);
+        throw new Error(`${queueSummary}; fallback_failed error=${formatErrorMessage(err)}`, {
+          cause: err,
+        });
       }
     }
     const response = await params.callGateway<{ runId: string }>({

Original file line number	Diff line number	Diff line change
`@@ -231,7 +231,9 @@ async function startAgentRun(params: {`
`231`	`231`	`} catch (err) {`
`232`	`232`	`const queueSummary =`
`233`	`233`	`formatEmbeddedPiQueueFailureSummary(queueOutcome) ?? "active run queue rejected";`
`234`		- throw new Error(`${queueSummary}; fallback_failed error=${formatErrorMessage(err)}`);
	`234`	+ throw new Error(`${queueSummary}; fallback_failed error=${formatErrorMessage(err)}`, {
	`235`	`+ cause: err,`
	`236`	`+ });`
`235`	`237`	`}`
`236`	`238`	`}`
`237`	`239`	`const response = await params.callGateway<{ runId: string }>({`