fix(ui): preserve investigation workspace across no-question states

components/investigation-map.jsx

@@ -11,6 +11,7 @@
  */
 
 import getInvestigationMapTopics from "@/lib/map/investigation-map-adapter";
+import React from "react";
 
 /* ── Status icons (unicode — no icon library dependency) ─── */
 
@@ -97,4 +98,4 @@ export default function InvestigationMap({ turnCount = 0 }) {
       </div>
     </div>
   );
-}
+}

components/investigation-summary-panel-v2.jsx

@@ -14,6 +14,8 @@
  * (Version A). No new backend fields or API contracts are required.
  */
 
+import React from "react";
+
 /* ── Helpers ──────────────────────────────────────────────── */
 
 function formatTimestamp(iso) {

components/investigation-summary-panel-v3.jsx

@@ -12,6 +12,7 @@
  */
 
 import { buildFacilitatorViewModel } from "@/lib/presentation/facilitator-view-adapter";
+import React from "react";
 
 /* ── Item rendering ─────────────────────────────────────────────── */
 

components/investigation-summary-panel.jsx

@@ -7,6 +7,8 @@
 
 /* ── Helpers ──────────────────────────────────────────────── */
 
+import React from "react";
+
 function formatTimestamp(iso) {
   if (!iso) return "—";
   try {

components/reasoning-workspace.jsx

@@ -658,16 +658,23 @@ export default function ReasoningWorkspace({
         </div>
       ) : (
         <>
-          {hasSelectedQuestion && (
+          {/* ── Workspace grid: persistent whenever a graph exists ─── */}
+          {hasGraph && (
             <div className="grid grid-cols-1 gap-6 lg:grid-cols-3">
               {/* ── Left lane: active conversation & notebook ───────── */}
               <div className="space-y-6 lg:col-span-2">
-                <CurrentInvestigationCard selectedQuestion={selectedQ} graph={graph} />
+                {/* Active question — only when there is one */}
+                {hasSelectedQuestion && (
+                  <>
+                    <CurrentInvestigationCard selectedQuestion={selectedQ} graph={graph} />
 
-                {updateStatus === "success" && !isUpdating && (
+                    {updateStatus === "success" && !isUpdating && (
-                  <UpdateAcknowledgement updateResult={result} />
+                      <UpdateAcknowledgement updateResult={result} />
+                    )}
+                  </>
                 )}
 
+                {/* Answer form — only when a question is active and not loading */}
                 {!isUpdating && canAnswer && (
                   <form onSubmit={handleUpdateCaptureAndSubmit} className="space-y-4 rounded-lg border border-gray-200 bg-white p-5">
                     <div>