diff --git a/src/duh/api/routes/threads.py b/src/duh/api/routes/threads.py
index 3c1b2d7..ee9a38c 100644
--- a/src/duh/api/routes/threads.py
+++ b/src/duh/api/routes/threads.py
@@ -61,6 +61,7 @@ class ThreadDetailResponse(BaseModel):
     question: str
     status: str
     created_at: str
+    overview: str | None = None
     turns: list[TurnResponse] = Field(default_factory=list)
     followups: list[str] = Field(default_factory=list)
     usage: UsageSummary = UsageSummary()
@@ -236,11 +237,15 @@ def _build_thread_detail(thread: object) -> ThreadDetailResponse:
             total_out = int(stored.get("output_tokens", total_out))
             total_cost = float(stored.get("cost_usd", total_cost))
 
+    summary = getattr(thread, "summary", None)
+    overview = summary.summary if summary else None
+
     return ThreadDetailResponse(
         thread_id=thread.id,  # type: ignore[attr-defined]
         question=thread.question,  # type: ignore[attr-defined]
         status=thread.status,  # type: ignore[attr-defined]
         created_at=thread.created_at.isoformat(),  # type: ignore[attr-defined]
+        overview=overview,
         turns=turns,
         followups=followups,
         usage=UsageSummary(
diff --git a/tests/unit/test_api_threads.py b/tests/unit/test_api_threads.py
index 2e0ef5f..bb6ea38 100644
--- a/tests/unit/test_api_threads.py
+++ b/tests/unit/test_api_threads.py
@@ -238,6 +238,33 @@ async def test_returns_thread_without_decision(self) -> None:
         assert turn["decision"] is None
         assert len(turn["contributions"]) == 1
 
+    async def test_returns_overview(self) -> None:
+        """The executive overview (thread summary) is returned for history."""
+        app = await _make_app()
+        async with app.state.db_factory() as session:
+            repo = MemoryRepository(session)
+            thread = await repo.create_thread("Has overview")
+            await repo.save_thread_summary(
+                thread.id, "Executive summary text.", "overview"
+            )
+            thread.status = "complete"
+            await session.commit()
+            tid = thread.id
+
+        client = TestClient(app, raise_server_exceptions=False)
+        resp = client.get(f"/api/threads/{tid}")
+        assert resp.status_code == 200
+        assert resp.json()["overview"] == "Executive summary text."
+
+    async def test_overview_null_when_absent(self) -> None:
+        """Threads without a summary report a null overview."""
+        app = await _make_app()
+        tid = await _seed_thread(app, "No overview")
+        client = TestClient(app, raise_server_exceptions=False)
+        resp = client.get(f"/api/threads/{tid}")
+        assert resp.status_code == 200
+        assert resp.json()["overview"] is None
+
     async def test_usage_prefers_stored_usage_json(self) -> None:
         """Run-level usage_json overrides the per-contribution sum."""
         app = await _make_app()
diff --git a/web/src/api/types.ts b/web/src/api/types.ts
index 1012690..e33fb7b 100644
--- a/web/src/api/types.ts
+++ b/web/src/api/types.ts
@@ -141,6 +141,7 @@ export interface ThreadDetail {
   question: string
   status: string
   created_at: string
+  overview?: string | null
   turns: Turn[]
   followups?: string[]
   usage?: Usage | null
diff --git a/web/src/components/consensus/ConsensusComplete.tsx b/web/src/components/consensus/ConsensusComplete.tsx
index 84035da..e26ff7b 100644
--- a/web/src/components/consensus/ConsensusComplete.tsx
+++ b/web/src/components/consensus/ConsensusComplete.tsx
@@ -1,8 +1,6 @@
 import { useState, useRef, useEffect } from 'react'
-import { GlassPanel, GlowButton, Markdown, Disclosure } from '@/components/shared'
-import { ConfidenceMeter } from './ConfidenceMeter'
-import { DissentBanner } from './DissentBanner'
-import { CostTicker } from './CostTicker'
+import { GlowButton } from '@/components/shared'
+import { ConsensusReport } from './ConsensusReport'
 import { useConsensusStore } from '@/stores/consensus'
 import type { RoundData } from '@/stores/consensus'
 import type { Usage } from '@/api/types'
@@ -101,7 +99,6 @@ function downloadFile(content: string | Blob, filename: string, mimeType: string
 }
 
 export function ConsensusComplete({ decision, confidence, rigor, dissent, cost, usage, collapsible, overview }: ConsensusCompleteProps) {
-  const [copied, setCopied] = useState(false)
   const [exportOpen, setExportOpen] = useState(false)
   const exportRef = useRef<HTMLDivElement>(null)
   const { question, rounds, threadId } = useConsensusStore()
@@ -118,12 +115,6 @@ export function ConsensusComplete({ decision, confidence, rigor, dissent, cost,
     return () => document.removeEventListener('mousedown', handler)
   }, [exportOpen])
 
-  const handleCopy = async () => {
-    await navigator.clipboard.writeText(overview ?? decision)
-    setCopied(true)
-    setTimeout(() => setCopied(false), 2000)
-  }
-
   const handleExportMarkdown = (content: 'full' | 'decision') => {
     const md = generateExportMarkdown(question, decision, confidence, rigor, dissent, cost, rounds, content, true, overview)
     downloadFile(md, `consensus-${content}.md`, 'text/markdown')
@@ -140,105 +131,58 @@ export function ConsensusComplete({ decision, confidence, rigor, dissent, cost,
     setExportOpen(false)
   }
 
-  const header = (
-    <>
-      <span className="font-mono text-xs text-[var(--color-green)] font-semibold">CONSENSUS REACHED</span>
-      <CostTicker cost={cost} usage={usage} />
-      <div className="flex items-center gap-3 ml-auto">
-        <ConfidenceMeter value={confidence} label="Confidence" />
-        <ConfidenceMeter value={rigor} size={48} label="Rigor" />
-      </div>
-    </>
-  )
-
-  const actions = (
-    <div className="flex gap-2 mb-4">
-      <GlowButton variant="ghost" size="sm" onClick={handleCopy}>
-        {copied ? 'Copied' : 'Copy'}
+  // Live export uses round data from the store (the thread may not be loaded
+  // as a ThreadDetail yet). The stored view uses the shared ExportMenu instead.
+  const exportSlot = (
+    <div className="relative" ref={exportRef}>
+      <GlowButton variant="ghost" size="sm" onClick={() => setExportOpen(!exportOpen)}>
+        Export
       </GlowButton>
-      <div className="relative" ref={exportRef}>
-        <GlowButton variant="ghost" size="sm" onClick={() => setExportOpen(!exportOpen)}>
-          Export
-        </GlowButton>
-        {exportOpen && (
-          <div className="absolute top-full left-0 mt-1 bg-[var(--color-surface-solid)] border border-[var(--color-border)] rounded-[var(--radius-md)] shadow-lg py-1 min-w-[200px] z-[var(--z-dropdown)]">
-            <button
-              className="w-full text-left px-3 py-1.5 text-xs hover:bg-[var(--color-surface-hover)] text-[var(--color-text)]"
-              onClick={() => handleExportMarkdown('decision')}
-            >
-              Markdown (decision only)
-            </button>
-            <button
-              className="w-full text-left px-3 py-1.5 text-xs hover:bg-[var(--color-surface-hover)] text-[var(--color-text)]"
-              onClick={() => handleExportMarkdown('full')}
-            >
-              Markdown (full report)
-            </button>
-            <button
-              className="w-full text-left px-3 py-1.5 text-xs hover:bg-[var(--color-surface-hover)] text-[var(--color-text)]"
-              onClick={() => handleExportPdf('decision')}
-            >
-              PDF (decision only)
-            </button>
-            <button
-              className="w-full text-left px-3 py-1.5 text-xs hover:bg-[var(--color-surface-hover)] text-[var(--color-text)]"
-              onClick={() => handleExportPdf('full')}
-            >
-              PDF (full report)
-            </button>
-          </div>
-        )}
-      </div>
-    </div>
-  )
-
-  const body = (
-    <>
-      {actions}
-      {overview ? (
-        <>
-          <Markdown className="text-sm">{overview}</Markdown>
-          <div className="mt-4">
-            <Disclosure header={<span className="font-mono text-xs text-[var(--color-text-dim)]">Full Decision</span>} defaultOpen={false}>
-              <Markdown className="text-sm">{decision}</Markdown>
-            </Disclosure>
-          </div>
-        </>
-      ) : (
-        <Markdown className="text-sm">{decision}</Markdown>
+      {exportOpen && (
+        <div className="absolute top-full left-0 mt-1 bg-[var(--color-surface-solid)] border border-[var(--color-border)] rounded-[var(--radius-md)] shadow-lg py-1 min-w-[200px] z-[var(--z-dropdown)]">
+          <button
+            className="w-full text-left px-3 py-1.5 text-xs hover:bg-[var(--color-surface-hover)] text-[var(--color-text)]"
+            onClick={() => handleExportMarkdown('decision')}
+          >
+            Markdown (decision only)
+          </button>
+          <button
+            className="w-full text-left px-3 py-1.5 text-xs hover:bg-[var(--color-surface-hover)] text-[var(--color-text)]"
+            onClick={() => handleExportMarkdown('full')}
+          >
+            Markdown (full report)
+          </button>
+          <button
+            className="w-full text-left px-3 py-1.5 text-xs hover:bg-[var(--color-surface-hover)] text-[var(--color-text)]"
+            onClick={() => handleExportPdf('decision')}
+          >
+            PDF (decision only)
+          </button>
+          <button
+            className="w-full text-left px-3 py-1.5 text-xs hover:bg-[var(--color-surface-hover)] text-[var(--color-text)]"
+            onClick={() => handleExportPdf('full')}
+          >
+            PDF (full report)
+          </button>
+        </div>
       )}
-    </>
+    </div>
   )
 
-  if (collapsible) {
-    return (
-      <div className="space-y-4 animate-fade-in-up">
-        <GlassPanel glow="strong" padding="lg">
-          <Disclosure header={header} defaultOpen>
-            {body}
-            {dissent && <div className="mt-4"><DissentBanner dissent={dissent} /></div>}
-          </Disclosure>
-        </GlassPanel>
-      </div>
-    )
-  }
-
   return (
     <div className="space-y-4 animate-fade-in-up">
-      <GlassPanel glow="strong" padding="lg">
-        <div className="flex items-start justify-between gap-4 mb-4">
-          <div className="flex items-center gap-3">
-            <span className="font-mono text-xs text-[var(--color-green)] font-semibold">CONSENSUS REACHED</span>
-            <CostTicker cost={cost} usage={usage} />
-          </div>
-          <div className="flex items-center gap-3">
-            <ConfidenceMeter value={confidence} label="Confidence" />
-            <ConfidenceMeter value={rigor} size={48} label="Rigor" />
-          </div>
-        </div>
-        {body}
-        {dissent && <div className="mt-4"><DissentBanner dissent={dissent} /></div>}
-      </GlassPanel>
+      <ConsensusReport
+        label="CONSENSUS REACHED"
+        decision={decision}
+        overview={overview}
+        confidence={confidence}
+        rigor={rigor}
+        dissent={dissent}
+        cost={cost}
+        usage={usage}
+        exportSlot={exportSlot}
+        collapsible={collapsible}
+      />
     </div>
   )
 }
diff --git a/web/src/components/consensus/ConsensusReport.tsx b/web/src/components/consensus/ConsensusReport.tsx
new file mode 100644
index 0000000..54680ad
--- /dev/null
+++ b/web/src/components/consensus/ConsensusReport.tsx
@@ -0,0 +1,110 @@
+import { useState, type ReactNode } from 'react'
+import { GlassPanel, GlowButton, Markdown, Disclosure } from '@/components/shared'
+import { ConfidenceMeter } from './ConfidenceMeter'
+import { DissentBanner } from './DissentBanner'
+import { CostTicker } from './CostTicker'
+import type { Usage } from '@/api/types'
+
+interface ConsensusReportProps {
+  /** Header label, e.g. "CONSENSUS REACHED". */
+  label: string
+  /** The full decision text (markdown). */
+  decision: string
+  /** Executive summary; when present it leads and the decision collapses. */
+  overview?: string | null
+  confidence: number
+  rigor: number
+  dissent?: string | null
+  cost?: number | null
+  usage?: Usage | null
+  /** View-specific export control rendered next to Copy. */
+  exportSlot?: ReactNode
+  /** Wrap the whole report in a Disclosure (live view collapses on follow-up). */
+  collapsible?: boolean
+}
+
+/**
+ * The unified consensus decision report, shared by the live view
+ * (ConsensusComplete) and the stored thread view (ThreadDetail) so both
+ * render identically: meters, Copy/Export, an executive summary that leads
+ * with the full decision tucked into a disclosure, and dissent.
+ */
+export function ConsensusReport({
+  label,
+  decision,
+  overview,
+  confidence,
+  rigor,
+  dissent,
+  cost = null,
+  usage = null,
+  exportSlot,
+  collapsible = false,
+}: ConsensusReportProps) {
+  const [copied, setCopied] = useState(false)
+
+  const handleCopy = async () => {
+    await navigator.clipboard.writeText(overview ?? decision)
+    setCopied(true)
+    setTimeout(() => setCopied(false), 2000)
+  }
+
+  const header = (
+    <>
+      <span className="font-mono text-xs text-[var(--color-green)] font-semibold">{label}</span>
+      <CostTicker cost={cost} usage={usage} />
+      <div className="flex items-center gap-3 ml-auto">
+        <ConfidenceMeter value={confidence} label="Confidence" />
+        <ConfidenceMeter value={rigor} size={48} label="Rigor" />
+      </div>
+    </>
+  )
+
+  const body = (
+    <>
+      <div className="flex gap-2 mb-4">
+        <GlowButton variant="ghost" size="sm" onClick={handleCopy}>
+          {copied ? 'Copied' : 'Copy'}
+        </GlowButton>
+        {exportSlot}
+      </div>
+
+      {overview ? (
+        <>
+          <Markdown className="text-sm">{overview}</Markdown>
+          <div className="mt-4">
+            <Disclosure
+              header={<span className="font-mono text-xs text-[var(--color-text-dim)]">Full Decision</span>}
+              defaultOpen={false}
+            >
+              <Markdown className="text-sm">{decision}</Markdown>
+            </Disclosure>
+          </div>
+        </>
+      ) : (
+        <Markdown className="text-sm">{decision}</Markdown>
+      )}
+
+      {dissent && (
+        <div className="mt-4">
+          <DissentBanner dissent={dissent} defaultOpen={false} />
+        </div>
+      )}
+    </>
+  )
+
+  return (
+    <GlassPanel glow="strong" padding="lg" className="animate-fade-in-up">
+      {collapsible ? (
+        <Disclosure header={header} defaultOpen>
+          {body}
+        </Disclosure>
+      ) : (
+        <>
+          <div className="flex items-center gap-3 mb-4">{header}</div>
+          {body}
+        </>
+      )}
+    </GlassPanel>
+  )
+}
diff --git a/web/src/components/threads/ThreadDetail.tsx b/web/src/components/threads/ThreadDetail.tsx
index c0cdb8e..5f01d7d 100644
--- a/web/src/components/threads/ThreadDetail.tsx
+++ b/web/src/components/threads/ThreadDetail.tsx
@@ -1,9 +1,8 @@
 import { useEffect, useState } from 'react'
 import { useParams, useNavigate } from 'react-router-dom'
 import { useThreadsStore } from '@/stores'
-import { GlassPanel, GlowButton, Skeleton, Badge, ExportMenu, Markdown, Disclosure } from '@/components/shared'
-import { ConfidenceMeter } from '@/components/consensus/ConfidenceMeter'
-import { DissentBanner } from '@/components/consensus/DissentBanner'
+import { GlassPanel, GlowButton, Skeleton, Badge, ExportMenu } from '@/components/shared'
+import { ConsensusReport } from '@/components/consensus/ConsensusReport'
 import { PhaseCard } from '@/components/consensus/PhaseCard'
 import { CostTicker } from '@/components/consensus/CostTicker'
 import type { Turn } from '@/api/types'
@@ -99,36 +98,23 @@ export function ThreadDetail() {
             <Badge variant={statusVariant[currentThread.status] ?? 'default'} size="md">
               {currentThread.status}
             </Badge>
-            {currentThread.status === 'complete' && <ExportMenu thread={currentThread} />}
           </div>
         </div>
       </GlassPanel>
 
       {finalDecision && (
         <div id="thread-decision">
-          <GlassPanel glow="strong" padding="lg" className="animate-fade-in-up">
-            <Disclosure
-              header={
-                <>
-                  <span className="font-mono text-xs text-[var(--color-green)] font-semibold">DECISION</span>
-                  <div className="flex items-center gap-2 ml-auto">
-                    <ConfidenceMeter value={finalDecision.confidence} size={48} label="Confidence" />
-                    <ConfidenceMeter value={finalDecision.rigor} size={36} label="Rigor" />
-                  </div>
-                </>
-              }
-              defaultOpen
-            >
-              <div className="text-sm">
-                <Markdown>{finalDecision.content}</Markdown>
-              </div>
-              {finalDecision.dissent && (
-                <div className="mt-4">
-                  <DissentBanner dissent={finalDecision.dissent} defaultOpen={false} />
-                </div>
-              )}
-            </Disclosure>
-          </GlassPanel>
+          <ConsensusReport
+            label="CONSENSUS REACHED"
+            decision={finalDecision.content}
+            overview={currentThread.overview}
+            confidence={finalDecision.confidence}
+            rigor={finalDecision.rigor}
+            dissent={finalDecision.dissent}
+            cost={currentThread.usage?.cost_usd ?? null}
+            usage={currentThread.usage}
+            exportSlot={<ExportMenu thread={currentThread} />}
+          />
         </div>
       )}