fix: OutputPicker shows stale result after 'Test up to here' (#8390)

OutputPickerInner.updateLastJob() unconditionally returned testJob
(from individual step tests) even when flowStateStore had newer results
from a flow test. Now testJob only takes priority when a step test is
actively running/streaming; otherwise flowStateStore is the source of
truth.

Also reset stepHistoryLoader initial flags when a flow test completes
so the "Run loaded from history" indicator doesn't persist.

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

frontend/src/lib/components/FlowPreviewContent.svelte

@@ -652,6 +652,13 @@
 					onDone={async ({ job: completedJob }) => {
 						isRunning = false
 						$executionCount = $executionCount + 1
+						// Reset 'initial' flags for modules that were part of this flow test,
+						// so OutputPicker no longer shows "Run loaded from history"
+						for (const mod of completedJob.flow_status?.modules ?? []) {
+							if (mod.id) {
+								stepHistoryLoader?.resetInitial(mod.id)
+							}
+						}
 						if (flowRecording.active) {
 							lastRecording = flowRecording.stop()
 							setActiveRecording(undefined)

frontend/src/lib/components/flows/propPicker/OutputPickerInner.svelte

@@ -204,7 +204,8 @@
 	}
 
 	function updateLastJob() {
-		if (testJob) {
+		// Prefer testJob only when actively running/streaming (individual step test in progress)
+		if (testJob && (testJob.result_stream || testJob.type === 'QueuedJob')) {
 			return testJob
 		}
 		if (
@@ -214,6 +215,8 @@
 		) {
 			return
 		}
+		// Use flowStateStore as source of truth — it's updated by both individual step tests
+		// (ModuleTest.jobDone) and flow tests (FlowStatusViewerInner.onJobsLoadedInner)
 		return {
 			id: flowStateStore.val[moduleId]?.previewJobId ?? '',
 			result: flowStateStore.val[moduleId]?.previewResult,