fix(confidence-engine): reopen completed focused investigation

components/reasoning-workspace.jsx

@@ -792,7 +792,7 @@ function OpenQuestionsPanel({
   focused, formulationStep, formulateMsg, processingStep, deconstructMsg, doneForNowIds,
   startFocused, handleDeconstructSubmit, retryFormulation, setSelectedPresentationItemId,
   setFocusedPresentationItemId, setFocusedAnswer, focusedAnswer, setDoneForNowIds,
-  setFollowUpQuestion, focusedContributions,
+  setFollowUpQuestion, focusedContributions, focusedInvestigations,
 }) {
   const openNodes = (graph?.nodes || []).filter(
     (n) => n.kind === "unknown" && n.status !== "resolved" && !doneForNowIds.includes(n.id),
@@ -800,6 +800,25 @@ function OpenQuestionsPanel({
 
   if (openNodes.length <= 0) return null;
 
+  // Check whether a node has a completed focused result stored locally.
+  const hasCompletedInvestigation = (nid) => {
+    const inv = focusedInvestigations?.[nid];
+    return Boolean(inv && inv.status === "formulated" && inv.result && typeof inv.question === "string" && inv.question.trim());
+  };
+
+  // When a completed result exists and this node is already selected, reopen it.
+  function handleNodeClick(node) {
+    if (!focused?.question?.trim() || (focused && !hasFocusedContent())) {
+      if (hasCompletedInvestigation(node.id) && selectedPresentationItemId === node.id) {
+        setFocusedPresentationItemId(node.id);
+        return;
+      }
+      setSelectedPresentationItemId(
+        selectedPresentationItemId === node.id ? null : node.id,
+      );
+    }
+  }
+
   return (
     <div className="space-y-4">
       <h2 className="text-[11px] font-semibold tracking-widest uppercase text-gray-500">
@@ -813,13 +832,7 @@ function OpenQuestionsPanel({
           return (
             <div key={node.id}>
               <div
-                onClick={() => {
-                  if (!focused?.question?.trim() || (focused && !hasFocusedContent())) {
-                    setSelectedPresentationItemId(
-                      selectedPresentationItemId === node.id ? null : node.id,
-                    );
-                  }
-                }}
+                onClick={() => handleNodeClick(node)}
                 style={{ cursor: "pointer" }}
                 className="w-full text-left rounded-lg border border-gray-200 px-4 py-3 transition hover:border-gray-300 hover:bg-white"
               >
@@ -1522,6 +1535,7 @@ export default function ReasoningWorkspace({
                     setDoneForNowIds={setDoneForNowIds}
                     setFollowUpQuestion={setFollowUpQuestion}
                     focusedContributions={focusedContributions}
+                    focusedInvestigations={focusedInvestigations}
                   />
                 )}