diff --git a/components/reasoning-workspace.jsx b/components/reasoning-workspace.jsx
index fe42985..c227b70 100644
--- a/components/reasoning-workspace.jsx
+++ b/components/reasoning-workspace.jsx
@@ -149,6 +149,20 @@ function FocusedQuestionBody({
   // Without this guard, selecting a follow-up question would erase "Previously answered" + "Your response".
   const hasCompletedContext = processingStep !== "active" && Boolean(focused?.result);
 
+  // ── Source of completed context: latest canonical Contribution when follow-up is active ──
+  // After setFollowUpQuestion() mutates focused.question/answer, derive from the
+  // latest completed Contribution so the narrative remains correct.
+  const hasActiveFollowUp = hasCompletedContext && !hasAnswer
+    && (focused.result?.possibleFollowUpQuestions || []).some((q) => q === focused?.question);
+  const latestCompletedContrib = [...(focusedContributions || [])].reverse().find((c) => c?.question && c?.answer);
+
+  const displayedCompletedQuestion = hasActiveFollowUp
+    ? (latestCompletedContrib?.question ?? focused?.question)
+    : focused?.question;
+  const displayedCompletedAnswer = hasActiveFollowUp
+    ? (latestCompletedContrib?.answer ?? focused?.answer ?? "")
+    : focused?.answer;
+
   // ── Local correction state (FQB-owned, not propagated upward) ─
   const [editingFindingId, setEditingFindingId] = useState(null);
   const [draft, setDraft] = useState("");
@@ -180,15 +194,15 @@ function FocusedQuestionBody({
           <div className="space-y-4 rounded-lg border border-gray-200 bg-white p-5">
             {(hasAnswer || hasCompletedContext) && focused?.question?.trim() ? (
               <div className="space-y-3">
-                {/* Previously answered question */}
+                {/* Previously answered question — sourced from contribution when follow-up is active */}
                 <div>
                   <h3 className="mb-1 text-[11px] font-semibold tracking-widest uppercase text-gray-500">Previously answered</h3>
-                  <p className="text-base font-medium leading-relaxed text-gray-900">{focused.question}</p>
+                  <p className="text-base font-medium leading-relaxed text-gray-900">{displayedCompletedQuestion}</p>
                 </div>
                 {/* User's verbatim response — distinct provenance from Engine-derived content */}
                 <div>
                   <h3 className="mb-1 text-[11px] font-semibold tracking-widest uppercase text-gray-500">Your response</h3>
-                  <p className="text-sm leading-relaxed text-gray-800">{focused.answer}</p>
+                  <p className="text-sm leading-relaxed text-gray-800">{displayedCompletedAnswer}</p>
                 </div>
               </div>
             ) : focused?.question?.trim() ? (
@@ -200,7 +214,7 @@ function FocusedQuestionBody({
               <p className="text-sm text-blue-600/70">{formulateMsg}</p>
             ) : null}
 
-            {focused?.question?.trim() && processingStep !== "active" && focused.status === "formulated" && !hasAnswer && (
+            {focused?.question?.trim() && processingStep !== "active" && focused.status === "formulated" && !hasAnswer && !hasActiveFollowUp && (
               <div>
                 <label htmlFor={`rw-answer-${nodeId}`} className="mb-2 block text-sm font-medium text-gray-700">Your response</label>
                 <textarea id={`rw-answer-${nodeId}`} value={focusedAnswer} onChange={(e) => setFocusedAnswer(e.target.value)} rows={4} data-testid="response-textarea" className="w-full rounded-lg border border-gray-300 px-4 py-3 text-sm focus:border-gray-500 focus:outline-none focus:ring-2 focus:ring-gray-400 disabled:cursor-not-allowed disabled:opacity-60" placeholder="What do you know about this?" />
@@ -212,9 +226,8 @@ function FocusedQuestionBody({
 
             {focused?.result && (
               <>
-                {/* Prior accumulated learning (prior turns, current turn excluded — shown above) */}
-                <PriorContributionsSummary nodeId={nodeId} contributions={focusedContributions || []} findings={findings} />
-
+                {/* Prior accumulated learning removed from left pane — SecondaryPreviousLearning on the right owns historical Previous Learning exclusively */}
+                {/* PriorContributionsSummary was causing duplication in the two-column focused workspace */}
                 <div><h3 className="mb-1 text-[11px] font-semibold tracking-widest uppercase text-gray-500">What this tells us</h3><ul className="list-disc pl-5 space-y-2">{(currentFindings?.length ? currentFindings : (focused.result.observations || [])).map((item, i) => {
                   const isFinding = typeof item === "object" && item !== null && "id" in item;
                   const disposition = isFinding ? item.userDisposition : null;
@@ -284,6 +297,30 @@ function FocusedQuestionBody({
                   ) : (
                     <p className="text-xs text-gray-400">None yet</p>
                   )}
+
+                {/* In-place answer textarea for the active follow-up — renders only when a candidate is selected */}
+                {hasActiveFollowUp ? (
+                  <div className="mt-3 space-y-2">
+                    <p className="text-sm font-medium text-gray-900">{focused.question}</p>
+                    <textarea
+                      id={`rw-answer-fu-${nodeId}`}
+                      value={focusedAnswer}
+                      onChange={(e) => setFocusedAnswer(e.target.value)}
+                      rows={4}
+                      data-testid="follow-up-textarea"
+                      className="w-full rounded-lg border border-gray-300 px-4 py-3 text-sm focus:border-gray-500 focus:outline-none focus:ring-2 focus:ring-gray-400 disabled:cursor-not-allowed disabled:opacity-60"
+                      placeholder="What do you know about this?"
+                    />
+                    <button
+                      onClick={(e) => { e.stopPropagation(); handleDeconstructSubmit(nodeId, focusedAnswer); }}
+                      disabled={!focusedAnswer.trim() || processingStep === "active"}
+                      style={{ cursor: !focusedAnswer.trim() || processingStep === "active" ? "not-allowed" : "pointer" }}
+                      className="rounded-lg border border-green-600 bg-white px-4 py-2 text-sm font-medium text-green-700 hover:bg-green-50 transition disabled:opacity-50"
+                    >
+                      Submit response
+                    </button>
+                  </div>
+                ) : null}
                 </div>
                 <div><h3 className="mb-1 text-[11px] font-semibold tracking-widest uppercase text-gray-500">Assumptions</h3><ul className="list-disc pl-5 space-y-1">{(focused.result.assumptions || []).map((a, i) => (<li key={i} className="text-sm leading-relaxed text-gray-700">{a}</li>))}</ul></div>
                 <div><h3 className="mb-1 text-[11px] font-semibold tracking-widest uppercase text-gray-500">Connections</h3><ul className="list-disc pl-5 space-y-1">{(focused.result.relationships || []).map((r, i) => (<li key={i} className="text-sm leading-relaxed text-gray-700">{r.from} → {r.to} ({r.type})</li>))}</ul></div>
@@ -1074,7 +1111,7 @@ function FocusedInvestigationWorkspace({
             setFocusedPresentationItemId={setFocusedPresentationItemId}
             setDoneForNowIds={setDoneForNowIds}
             setFollowUpQuestion={setFollowUpQuestion}
-            focusedContributions={hasResult ? [] : (focusedContributions || [])}
+            focusedContributions={focusedContributions || []}
             currentFindings={currentFindings || []}
             onUpdateFindingDisposition={onUpdateFindingDisposition}
             onUpdateFindingProposition={onUpdateFindingProposition}
@@ -1208,6 +1245,9 @@ function OpenQuestionsPanel({
   );
 }
 
+// Export for testability of in-place follow-up ownership repair
+export { FocusedQuestionBody, SecondaryPreviousLearning };
+
 export default function ReasoningWorkspace({
   scenario,
   status,
diff --git a/docs/current-handoff.md b/docs/current-handoff.md
index 93dee7c..d2edd9b 100644
--- a/docs/current-handoff.md
+++ b/docs/current-handoff.md
@@ -2092,3 +2092,69 @@ previous question
 ```
 
 Exact UI labels and wording remain subject to later UX refinement. This principle is the durable separation of provenance; it should guide the upcoming completed-result presentation work.
+
+---
+
+### v0.49 FOLLOW-UP PRESENTATION OWNERSHIP REPAIR
+
+**Status:** VERIFIED (tests + build + Playwright live)
+**Branch:** `feature/finding-informed-understanding-v0.49`
+
+#### Repair scope
+
+The in-place follow-up repair (completed turn provenance preservation) introduced an overloaded responsibility: passing the full historical `Contributions` array into `FocusedQuestionBody` served two purposes simultaneously — recovering the latest completed Q3/A3 for "Previously Answered / Your Response" AND rendering "Previous Learning" history via `PriorContributionsSummary`.
+
+Those are distinct presentation responsibilities. Separating them exposes a duplication defect: "Previous Learning" appeared on BOTH the left current-progression pane AND the right historical column.
+
+#### What changed
+
+- **In-place follow-up repair retained** — canonical Q3/A3 provenance recovered from the latest completed Contribution via `latestCompletedContribution` derivation; top-textarea suppression via `hasActiveFollowUp`; in-place Q4 textarea under "Questions This Raises"; Previous Learning newest-first ordering.
+- **Duplicate Previous Learning removed** — `PriorContributionsSummary` embedded rendering removed from `FocusedQuestionBody` inside the two-column focused workspace (`FocusedInvestigationWorkspace`).
+- **Presentation ownership separated:**
+  - `latestCompletedContribution` (derived once inside `FocusedQuestionBody`) supplies provenance context for Q3/A3 independently of history presentation.
+  - Left pane now owns only current/latest progression: Previously Answered, Your Response, What This Tells Us, Still Unclear, Questions This Raises, active follow-up controls.
+  - Right-side `SecondaryPreviousLearning` exclusively owns older-turn history with "Previous Learning" heading and newest-first ordering.
+- **Exactly one "Previous Learning" surface** across the focused workspace.
+- **Post-answer promotion preserved:** After submitting Q4, it became the latest completed narrative; Turn 3 (the previous current turn) promoted to first item in Previous Learning; Turn 2 and Turn 1 follow in order.
+
+#### Test results
+
+- **Tests passed:** 116/116 (`tests/open-questions-vs-assumptions.test.jsx`)
+- **Build:** PASS
+- **Full Vitest:** NOT RUN (bounded scope)
+
+#### Playwright live verification
+
+- Correct Q3 retained under "Previously Answered": YES
+- Correct A3 retained under "Your Response": YES
+- Q4 remains in place as follow-up textarea: YES
+- Visible textarea count: 1
+- Top duplicate "Question" heading: ABSENT
+- Left-side Previous Learning visible: ABSENT (removed)
+- Right-side Previous Learning visible: YES (exactly one)
+- Previous Learning heading count across workspace: 1
+- Previous Learning order: newest-first (Turn 2 → Turn 1 before fix; Turn 3 → Turn 2 → Turn 1 after post-answer submission)
+
+#### Post-answer verification
+
+- Natural focused answers submitted: 1 (Q4 inline answer)
+- New turn became latest narrative: YES (Q4 text under "Previously Answered")
+- Previous turn became first historical item: YES (Turn 3 as first entry in Previous Learning on the right)
+- Single Previous Learning surface preserved: YES
+
+#### Critical regression boundaries
+
+- Persistence changed: NO
+- Contribution schema changed: NO
+- Finding semantics changed: NO
+- Graph reasoning changed: NO
+- Current Understanding changed: NO
+- Workspace controls changed: NO
+
+#### Next position
+
+- Completed-result provenance: CLOSED
+- In-place follow-up continuation: CLOSED
+- Previous Learning single-owner presentation: CLOSED
+- Previous Learning newest-first: CLOSED
+- Post-answer promotion: PRESERVED
diff --git a/tests/open-questions-vs-assumptions.test.jsx b/tests/open-questions-vs-assumptions.test.jsx
index 552e7b2..6a2d20c 100644
--- a/tests/open-questions-vs-assumptions.test.jsx
+++ b/tests/open-questions-vs-assumptions.test.jsx
@@ -1,4 +1,8 @@
 import { describe, expect, it } from "vitest";
+import "@testing-library/jest-dom/vitest";
+import React from "react";
+import { render, screen, fireEvent } from "@testing-library/react";
+import { FocusedQuestionBody, SecondaryPreviousLearning } from "@/components/reasoning-workspace";
 
 // ── Simulated rendering logic extracted from reasoning-workspace.jsx
 //    Mirrors the exact filter + conditional structure used in the
@@ -1903,4 +1907,293 @@ describe("v0.49 Case A — completed turn provenance narrative", () => {
       expect(focused.result.observations.some((f) => f === focused.answer)).toBe(false);
     });
   });
+});
+
+// ── v0.49 RENDERED REGRESSION — in-place follow-up ownership defect ──
+// Proves: after selecting a follow-up under QUESTIONS THIS RAISES,
+// the completed narrative sources question/answer from the canonical
+// completed Contribution (not from the mutated active focused state),
+// and exactly one textarea renders (in-place under Q4, not at top).
+
+function makeContrib(question, answer, seq) {
+  return {
+    id: `contrib-t${seq}`,
+    targetNodeId: "node-test",
+    originatingTargetNodeId: "node-test",
+    question,
+    answer,
+    sequence: seq,
+    observations: [`Finding for turn ${seq}`],
+    possibleFollowUpQuestions: [],
+  };
+}
+
+function renderFQB(props) {
+  const defaultProps = {
+    nodeId: "node-test",
+    isFocused: true,
+    hasContent: true,
+    processingStep: "idle",
+    formulationStep: "active",
+    deconstructMsg: "Processing…",
+    focusedAnswer: "",
+    setFocusedAnswer: () => {},
+    handleDeconstructSubmit: () => {},
+    retryFormulation: () => {},
+    setFollowUpQuestion: () => {},
+    focusedContributions: [],
+    currentFindings: [],
+    findings: [],
+    onUpdateFindingDisposition: () => {},
+    onUpdateFindingProposition: () => {},
+    ...props,
+  };
+  return render(<FocusedQuestionBody {...defaultProps} />);
+}
+
+describe("v0.49 RENDERED — in-place follow-up context ownership", () => {
+  describe("before selection — completed result with answer present", () => {
+    it("renders Q3 under Previously Answered and A3 non-empty under Your Response, no textarea", () => {
+      const contrib = makeContrib(
+        "Which specific step of the onboarding funnel has the highest abandonment rate?",
+        "Step 3 — account verification / phone confirmation.",
+        1,
+      );
+
+      renderFQB({
+        focused: {
+          question: contrib.question,
+          answer: contrib.answer,
+          status: "formulated",
+          result: {
+            observations: [contrib.observations[0]],
+            uncertainties: ["Is this a UX problem or trust issue?"],
+            possibleFollowUpQuestions: [
+              "What drives the Step 3 abandonment rate?",
+              "Can reducing friction at Step 3 reduce overall abandonment?",
+            ],
+            assumptions: [],
+            relationships: [],
+          },
+          error: null,
+        },
+        focusedContributions: [contrib],
+        processingStep: "idle",
+      });
+
+      // Completed narrative correct
+      expect(screen.getByText("Previously answered")).toBeInTheDocument();
+      expect(screen.getByText(contrib.question)).toBeInTheDocument();
+      expect(screen.getByText("Your response")).toBeInTheDocument();
+      expect(screen.getByText(contrib.answer)).toBeInTheDocument();
+
+      // No textarea visible for completed result
+      const textareas = screen.queryAllByTestId("response-textarea");
+      expect(textareas).toHaveLength(0);
+    });
+  });
+
+  describe("after selecting follow-up Q4 under QUESTIONS THIS RAISES", () => {
+    it("completed narrative still shows Q3/A3 (not mutated), in-place textarea renders under Q4, exactly one textarea total", async () => {
+      const prevQ = "Which specific step of the onboarding funnel has the highest abandonment rate?";
+      const prevA = "Step 3 — account verification / phone confirmation.";
+      const followUpQ = "What drives the Step 3 abandonment rate?";
+
+      const contrib = makeContrib(prevQ, prevA, 1);
+
+      // Simulate post-selection state: focused.question mutated to follow-up, answer cleared, result preserved
+      const focusedPostSelection = {
+        question: followUpQ, // MUTATED — this is the defect we're testing against
+        answer: null, // CLEARED — this is the defect
+        status: "active", // follow-up selection changes status to active
+        result: {
+          observations: [contrib.observations[0]],
+          uncertainties: ["Is this a UX problem or trust issue?"],
+          possibleFollowUpQuestions: [followUpQ, "Can reducing friction at Step 3 reduce overall abandonment?"],
+          assumptions: [],
+          relationships: [],
+        },
+        error: null,
+      };
+
+      renderFQB({
+        focused: focusedPostSelection,
+        focusedContributions: [contrib],
+        processingStep: "idle", // idle = hasCompletedContext is true
+      });
+
+      // === COMPLETED NARRATIVE — must source from contribution, not mutated focused ===
+
+      // Previously answered shows Q3 (original), NOT the follow-up question
+      expect(screen.getByText("Previously answered")).toBeInTheDocument();
+      const pqText = screen.getByText(prevQ);
+      expect(pqText).toBeInTheDocument();
+      // Q4 should NOT appear under "Previously answered" — it should only appear under "Questions This Raises"
+      const prevSection = pqText.closest("div");
+      expect(prevSection?.textContent?.includes(followUpQ)).toBe(false);
+
+      // Your response shows A3 and is non-empty
+      expect(screen.getByText("Your response")).toBeInTheDocument();
+      const arText = screen.getByText(prevA);
+      expect(arText).toBeInTheDocument();
+      expect(arText.textContent?.trim().length).toBeGreaterThan(0);
+
+      // === QUESTIONS THIS RAISES — Q4 selected with in-place textarea ===
+
+      expect(screen.getByText("Questions this raises")).toBeInTheDocument();
+      // Q4 text should be visible under Questions This Raises
+      expect(screen.getByText(followUpQ)).toBeInTheDocument();
+
+      // Exactly one textarea (in-place, not top-level)
+      const allTextareas = screen.getAllByRole("textbox");
+      expect(allTextareas).toHaveLength(1);
+
+      // The single textarea has the correct placeholder
+      const fuTextarea = screen.getByPlaceholderText("What do you know about this?");
+      expect(fuTextarea).toBeInTheDocument();
+
+      // Submit button visible under in-place follow-up
+      expect(screen.getByRole("button", { name: /submit/i })).toBeInTheDocument();
+    });
+
+    it("top-level QUESTION Q4 does NOT appear as a separate section after selection", () => {
+      const prevQ = "Which specific step of the onboarding funnel has the highest abandonment rate?";
+      const followUpQ = "What drives the Step 3 abandonment rate?";
+      const contrib = makeContrib(prevQ, "Step 3 answer.", 1);
+
+      renderFQB({
+        focused: {
+          question: followUpQ,
+          answer: null,
+          status: "formulated",
+          result: {
+            observations: ["Finding"],
+            uncertainties: [],
+            possibleFollowUpQuestions: [followUpQ],
+            assumptions: [],
+            relationships: [],
+          },
+          error: null,
+        },
+        focusedContributions: [contrib],
+        processingStep: "idle",
+      });
+
+      // There should be NO "Question" heading (top-level) — only "Previously answered"
+      const questionHeadings = screen.queryAllByText("Question");
+      expect(questionHeadings).toHaveLength(0);
+    });
+  });
+
+  describe("v0.49 Previous Learning duplication — PriorContributionsSummary must not render in focused workspace", () => {
+    it("when multiple prior turns exist, Previous Learning heading appears ONLY on right panel (SecondaryPreviousLearning), NOT embedded in left FocusedQuestionBody", () => {
+      const turn1Q = "What is the primary user motivation for signing up?";
+      const turn1A = "To access premium features faster than free users.";
+      const turn2Q = "Which feature combination drives the most retention?";
+      const turn2A = "Analytics dashboard + automated reports at $29/mo tier.";
+      const currentQ = "What drives the Step 3 abandonment rate?";
+
+      const contribs = [
+        makeContrib(turn1Q, turn1A, 1),
+        makeContrib(turn2Q, turn2A, 2),
+      ];
+
+      renderFQB({
+        focused: {
+          question: currentQ,
+          answer: null,
+          status: "active",
+          result: {
+            observations: [turn2A],
+            uncertainties: ["Is this causal or correlational?"],
+            possibleFollowUpQuestions: [currentQ, "How does retention vary by segment?"],
+            assumptions: [],
+            relationships: [],
+          },
+          error: null,
+        },
+        focusedContributions: contribs,
+        processingStep: "idle",
+      });
+
+      // === COMPLETED NARRATIVE — Q3/A3 from latest contribution preserved ===
+      expect(screen.getByText("Previously answered")).toBeInTheDocument();
+      const pqText = screen.getByText(turn2Q);
+      expect(pqText).toBeInTheDocument();
+      expect(screen.getByText("Your response")).toBeInTheDocument();
+      // Use the paragraph under "Your response" to avoid ambiguity with PriorContributionsSummary rendering
+      const yourResponseSection = screen.getByText("Your response").parentElement;
+      const arText = yourResponseSection?.querySelector("p");
+      expect(arText).toHaveTextContent(turn2A);
+
+      // === QUESTIONS THIS RAISES — current Q with textarea ===
+      expect(screen.getByText("Questions this raises")).toBeInTheDocument();
+      expect(screen.getByText(currentQ)).toBeInTheDocument();
+
+      // Exactly one textarea (in-place follow-up)
+      const allTextareas = screen.getAllByRole("textbox");
+      expect(allTextareas).toHaveLength(1);
+
+      // === CRITICAL: Previous Learning heading must NOT appear in left pane ===
+      // PriorContributionsSummary renders <h4> with text "Previous learning" (case-insensitive match)
+      const prevLearningHeadings = screen.queryAllByText(/previous learning/i);
+      expect(prevLearningHeadings.length).toBeLessThanOrEqual(1);
+
+      // If a Previous Learning heading exists in the full DOM, it should be on the right panel only
+      // In FocusedQuestionBody alone there is no SecondaryPreviousLearning, so with NO PriorContributionsSummary
+      // there should be zero "Previous learning" headings in this isolated render.
+      expect(prevLearningHeadings.length).toBe(0);
+    });
+
+    it("after SecondaryPreviousLearning is mounted on the right, exactly one Previous Learning heading total", () => {
+      const turn1Q = "Turn 1 question";
+      const turn1A = "Turn 1 answer.";
+      const turn2Q = "Turn 2 question";
+      const turn2A = "Turn 2 answer.";
+      const currentQ = "Current focused question?";
+
+      // Two prior contributions (the most recent will be excluded by slice(0,-1), Turn 1 remains)
+      const contribs = [makeContrib(turn1Q, turn1A, 1), makeContrib(turn2Q, turn2A, 2)];
+
+      // Render FQB + SecondaryPreviousLearning as the workspace does
+      render(
+        <div style={{ display: "grid", gridTemplateColumns: "1fr 1fr" }}>
+          <FocusedQuestionBody
+            nodeId="node-test"
+            isFocused={true}
+            hasContent={true}
+            processingStep="idle"
+            formulationStep="active"
+            deconstructMsg=""
+            focusedAnswer=""
+            setFocusedAnswer={() => {}}
+            handleDeconstructSubmit={() => {}}
+            retryFormulation={() => {}}
+            setFollowUpQuestion={() => {}}
+            focused={
+              {
+                question: currentQ,
+                answer: null,
+                status: "active",
+                result: {
+                  observations: ["finding"],
+                  uncertainties: [],
+                  possibleFollowUpQuestions: [currentQ],
+                  assumptions: [],
+                  relationships: [],
+                },
+                error: null,
+              }
+            }
+            focusedContributions={contribs}
+          />
+          <SecondaryPreviousLearning nodeId="node-test" contributions={contribs} findings={[]} />
+        </div>,
+      );
+
+      // Exactly one Previous Learning heading across the two-column workspace
+      const prevLearningHeadings = screen.queryAllByText(/previous learning/i);
+      expect(prevLearningHeadings).toHaveLength(1);
+    });
+  });
 });
\ No newline at end of file
diff --git a/vitest.config.js b/vitest.config.js
index 27a2e87..46dd0c1 100644
--- a/vitest.config.js
+++ b/vitest.config.js
@@ -6,6 +6,6 @@ const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
 
 export default defineConfig({
-  test: { globals: true },
+  test: { globals: true, environment: "jsdom" },
   resolve: { alias: { "@": path.resolve(__dirname, ".") } },
 });