diff --git a/src/app/actions/summarise.ts b/src/app/actions/summarise.ts
new file mode 100644
index 0000000..16e6f76
--- /dev/null
+++ b/src/app/actions/summarise.ts
@@ -0,0 +1,62 @@
+"use server";
+
+import { revalidatePath } from "next/cache";
+
+import { requireSession } from "@/lib/auth/session";
+import {
+  resetSummaryFailures,
+  summariseProject,
+  summaryStatus,
+} from "@/lib/ai/summarise";
+
+/** See the security note at the top of src/app/actions/cards.ts. */
+async function requireOwner() {
+  const session = await requireSession();
+  if (session.role !== "owner") throw new Error("Not found");
+  return session;
+}
+
+export async function summariseProjectAction(input: {
+  projectId: string;
+}): Promise<{ summarised: number; failed: number; message: string }> {
+  await requireOwner();
+
+  const result = await summariseProject(input.projectId);
+  revalidatePath(`/admin/projects/${input.projectId}`);
+
+  if (result.skipped) {
+    return {
+      summarised: 0,
+      failed: 0,
+      message: result.error ?? "No AI provider is configured.",
+    };
+  }
+
+  if (result.considered === 0) {
+    return { summarised: 0, failed: 0, message: "Everything is already summarised." };
+  }
+
+  const parts = [`${result.summarised} summarised`];
+  if (result.failed > 0) parts.push(`${result.failed} not returned`);
+  if (result.error) parts.push(result.error);
+
+  return {
+    summarised: result.summarised,
+    failed: result.failed,
+    message: parts.join(" · "),
+  };
+}
+
+export async function retryFailedSummariesAction(input: {
+  projectId: string;
+}): Promise<{ reset: number }> {
+  await requireOwner();
+  const reset = await resetSummaryFailures(input.projectId);
+  revalidatePath(`/admin/projects/${input.projectId}`);
+  return { reset };
+}
+
+export async function summaryStatusAction(input: { projectId: string }) {
+  await requireOwner();
+  return summaryStatus(input.projectId);
+}
diff --git a/src/app/admin/projects/[projectId]/page.tsx b/src/app/admin/projects/[projectId]/page.tsx
index 0065de6..af3aee5 100644
--- a/src/app/admin/projects/[projectId]/page.tsx
+++ b/src/app/admin/projects/[projectId]/page.tsx
@@ -3,7 +3,9 @@ import { notFound } from "next/navigation";
 import { AppShell } from "@/components/shell/app-shell";
 import { TopBar } from "@/components/shell/top-bar";
 import { IngestPanel } from "@/components/admin/ingest-panel";
+import { SummaryPanel } from "@/components/admin/summary-panel";
 import { getAdminPb } from "@/lib/pb/admin";
+import { summaryStatus } from "@/lib/ai/summarise";
 import type { ProjectRecord } from "@/lib/pb/types";
 
 /**
@@ -35,12 +37,14 @@ export default async function ProjectAdminPage({
 
   const appUrl = process.env.NEXT_PUBLIC_APP_URL ?? "http://localhost:3000";
 
+  const summary = await summaryStatus(project.id);
+
   return (
     <AppShell role="owner" currentPath="/admin/projects">
       <TopBar title={project.name} subtitle="Project settings" />
 
       <div className="flex-1 overflow-y-auto p-6">
-        <div className="mx-auto max-w-2xl">
+        <div className="mx-auto max-w-2xl space-y-4">
           <IngestPanel
             projectId={project.id}
             repoOwner={project.repo_owner}
@@ -50,6 +54,7 @@ export default async function ProjectAdminPage({
             lastIngestAt={project.last_ingest_at}
             commitCount={commits.totalItems}
           />
+          <SummaryPanel projectId={project.id} status={summary} />
         </div>
       </div>
     </AppShell>
diff --git a/src/components/admin/summary-panel.tsx b/src/components/admin/summary-panel.tsx
new file mode 100644
index 0000000..d1a161d
--- /dev/null
+++ b/src/components/admin/summary-panel.tsx
@@ -0,0 +1,90 @@
+"use client";
+
+import { useState, useTransition } from "react";
+import { Sparkles, RotateCcw } from "lucide-react";
+
+import {
+  retryFailedSummariesAction,
+  summariseProjectAction,
+} from "@/app/actions/summarise";
+
+export function SummaryPanel({
+  projectId,
+  status,
+}: {
+  projectId: string;
+  status: { total: number; summarised: number; stale: number; failing: number };
+}) {
+  const [pending, startTransition] = useTransition();
+  const [message, setMessage] = useState<string | null>(null);
+
+  const remaining = status.total - status.summarised;
+
+  return (
+    <section className="space-y-4 rounded-[var(--radius-tile)] border border-border-subtle p-4">
+      <div>
+        <h2 className="text-sm font-semibold text-text-primary">
+          Plain-English summaries
+        </h2>
+        <p className="mt-0.5 text-xs text-text-muted">
+          <span className="tabular">{status.summarised}</span> of{" "}
+          <span className="tabular">{status.total}</span> commits summarised
+          {status.stale > 0 && (
+            <>
+              {" · "}
+              <span className="tabular">{status.stale}</span> written under an
+              older prompt
+            </>
+          )}
+          {/* Silent degradation to raw subjects, with no indication, would go
+              unnoticed for weeks. */}
+          {status.failing > 0 && (
+            <>
+              {" · "}
+              <span className="text-accent">
+                <span className="tabular">{status.failing}</span> failing
+              </span>
+            </>
+          )}
+        </p>
+      </div>
+
+      <div className="flex flex-wrap items-center gap-3">
+        <button
+          type="button"
+          disabled={pending || remaining === 0}
+          onClick={() =>
+            startTransition(async () => {
+              setMessage("Generating…");
+              const result = await summariseProjectAction({ projectId });
+              setMessage(result.message);
+            })
+          }
+          className="inline-flex items-center gap-1.5 rounded-lg bg-brand px-3 py-1.5 text-sm font-medium text-brand-fg hover:bg-brand-hover disabled:opacity-50"
+        >
+          <Sparkles size={14} strokeWidth={2} />
+          {remaining === 0 ? "All summarised" : `Summarise ${remaining}`}
+        </button>
+
+        {status.failing > 0 && (
+          <button
+            type="button"
+            disabled={pending}
+            onClick={() =>
+              startTransition(async () => {
+                const result = await retryFailedSummariesAction({ projectId });
+                setMessage(`${result.reset} commits queued for another attempt.`);
+              })
+            }
+            className="inline-flex items-center gap-1.5 rounded-lg border border-border-subtle px-2.5 py-1.5 text-xs text-text-secondary hover:bg-surface-raised disabled:opacity-50"
+          >
+            <RotateCcw size={13} strokeWidth={2} />
+            Retry failing
+          </button>
+        )}
+
+        {message && <span className="text-xs text-text-muted">{message}</span>}
+      </div>
+    </section>
+  );
+}