fix: unify reasoning mode across submissions

components/investigation-summary-panel.jsx

@@ -29,7 +29,7 @@ function humaniseDuration(seconds) {
 
 /* ── Component ────────────────────────────────────────────── */
 
-function InvestigationSummaryPanel({ graph, selectedQuestion, result }) {
+function InvestigationSummaryPanel({ graph, selectedQuestion, result, updateStatus }) {
   // ── Current status ────────────────────────────────────────────
   // TODO: reasoning should emit an explicit status field such as
   //   "investigating", "evidence_limit_reached", "resolution_achieved".
@@ -38,7 +38,9 @@ function InvestigationSummaryPanel({ graph, selectedQuestion, result }) {
   const hasGraph = Boolean(graph);
 
   let currentStatus;
-  if (!hasGraph) {
+  if (updateStatus === "loading") {
+    currentStatus = { label: "Reasoning", level: "investigating" };
+  } else if (!hasGraph) {
     currentStatus = { label: "Not started", level: "idle" };
   } else if (isInvestigating) {
     currentStatus = { label: "Investigation in progress", level: "investigating" };