diff --git a/messages/de.json b/messages/de.json
index c7befd31d..0a41fd0b5 100644
--- a/messages/de.json
+++ b/messages/de.json
@@ -5283,17 +5283,9 @@
         "title": "Integrationen",
         "subtitle": "Umami, GlitchTip, Web Push und Bug-Reports konfigurieren."
       },
-      "ai-quality": {
-        "title": "Auswertungs-Qualität",
-        "subtitle": "Hilfreichkeit nach Schweregrad und Provider — Nutzer-Feedback der letzten 30 Tage."
-      },
-      "assistant": {
-        "title": "Assistenz-Oberflächen",
-        "subtitle": "Jede modellgestützte Oberfläche separat ein- oder ausschalten, ohne die Provider-Konfiguration zu entfernen."
-      },
-      "coach-feedback": {
-        "title": "Coach-Feedback",
-        "subtitle": "Hilfreich-Quote pro Coach-Prompt-Version, Tonfall und Ausführlichkeit der letzten 30 Tage."
+      "coach": {
+        "title": "Coach",
+        "subtitle": "Assistenz-Oberflächen, Server-Schlüssel sowie die Feedback-Qualitäts-Tabellen für Coach und Auswertungen an einem Ort."
       },
       "feedback": {
         "title": "Feedback",
diff --git a/messages/en.json b/messages/en.json
index 32385a1a4..86057cefd 100644
--- a/messages/en.json
+++ b/messages/en.json
@@ -5283,17 +5283,9 @@
         "title": "Integrations",
         "subtitle": "Configure Umami, GlitchTip, Web Push, and bug reports."
       },
-      "ai-quality": {
-        "title": "Insights Quality",
-        "subtitle": "Helpfulness scores grouped by severity and provider, from the last 30 days of user feedback."
-      },
-      "assistant": {
-        "title": "Assistant Surfaces",
-        "subtitle": "Toggle each model-driven surface on or off without removing the provider configuration."
-      },
-      "coach-feedback": {
-        "title": "Coach Feedback",
-        "subtitle": "Helpful-rate per Coach prompt version, tone, and verbosity from the last 30 days."
+      "coach": {
+        "title": "Coach",
+        "subtitle": "Assistant surfaces, server key, and the Coach and Insights feedback-quality tables in one place."
       },
       "feedback": {
         "title": "Feedback",
diff --git a/messages/es.json b/messages/es.json
index 3d0c9e8a5..1e965f03e 100644
--- a/messages/es.json
+++ b/messages/es.json
@@ -5283,17 +5283,9 @@
         "title": "Integraciones",
         "subtitle": "Configura Umami, GlitchTip, Web Push e informes de errores."
       },
-      "ai-quality": {
-        "title": "Calidad de los análisis",
-        "subtitle": "Puntuaciones de utilidad agrupadas por gravedad y proveedor, de los últimos 30 días de comentarios de usuarios."
-      },
-      "assistant": {
-        "title": "Superficies del asistente",
-        "subtitle": "Activa o desactiva cada superficie impulsada por el modelo sin retirar la configuración del proveedor."
-      },
-      "coach-feedback": {
-        "title": "Comentarios del Coach",
-        "subtitle": "Tasa de utilidad por versión de prompt, tono y nivel de detalle del Coach de los últimos 30 días."
+      "coach": {
+        "title": "Coach",
+        "subtitle": "Superficies del asistente, clave del servidor y las tablas de calidad de comentarios del Coach y de los análisis, en un solo lugar."
       },
       "feedback": {
         "title": "Comentarios",
diff --git a/messages/fr.json b/messages/fr.json
index fa30711b1..7cba3c12c 100644
--- a/messages/fr.json
+++ b/messages/fr.json
@@ -5283,17 +5283,9 @@
         "title": "Intégrations",
         "subtitle": "Configurez Umami, GlitchTip, Web Push et les rapports de bug."
       },
-      "ai-quality": {
-        "title": "Qualité des analyses",
-        "subtitle": "Scores d'utilité regroupés par gravité et fournisseur, sur les 30 derniers jours de retours utilisateurs."
-      },
-      "assistant": {
-        "title": "Surfaces d'assistance",
-        "subtitle": "Activer ou désactiver chaque surface pilotée par le modèle sans supprimer la configuration du fournisseur."
-      },
-      "coach-feedback": {
-        "title": "Retours sur le Coach",
-        "subtitle": "Taux d'utilité par version de prompt, ton et niveau de détail du Coach sur les 30 derniers jours."
+      "coach": {
+        "title": "Coach",
+        "subtitle": "Surfaces d'assistance, clé du serveur et les tableaux de qualité des retours du Coach et des analyses, au même endroit."
       },
       "feedback": {
         "title": "Retours",
diff --git a/messages/it.json b/messages/it.json
index 11959a6f4..2d45152a9 100644
--- a/messages/it.json
+++ b/messages/it.json
@@ -5283,17 +5283,9 @@
         "title": "Integrazioni",
         "subtitle": "Configura Umami, GlitchTip, Web Push e le segnalazioni di bug."
       },
-      "ai-quality": {
-        "title": "Qualità delle analisi",
-        "subtitle": "Punteggi di utilità raggruppati per gravità e provider, dagli ultimi 30 giorni di feedback degli utenti."
-      },
-      "assistant": {
-        "title": "Superfici dell'assistente",
-        "subtitle": "Attiva o disattiva ciascuna superficie guidata dal modello senza rimuovere la configurazione del provider."
-      },
-      "coach-feedback": {
-        "title": "Feedback del Coach",
-        "subtitle": "Tasso di utilità per versione del prompt, tono e livello di dettaglio del Coach degli ultimi 30 giorni."
+      "coach": {
+        "title": "Coach",
+        "subtitle": "Superfici dell'assistente, chiave del server e le tabelle di qualità del feedback di Coach e analisi, in un unico posto."
       },
       "feedback": {
         "title": "Feedback",
diff --git a/messages/pl.json b/messages/pl.json
index ad476cd02..72bc30aa1 100644
--- a/messages/pl.json
+++ b/messages/pl.json
@@ -5283,17 +5283,9 @@
         "title": "Integracje",
         "subtitle": "Skonfiguruj Umami, GlitchTip, Web Push i zgłoszenia błędów."
       },
-      "ai-quality": {
-        "title": "Jakość analiz",
-        "subtitle": "Oceny przydatności pogrupowane według ważności i dostawcy, z ostatnich 30 dni opinii użytkowników."
-      },
-      "assistant": {
-        "title": "Powierzchnie asystenta",
-        "subtitle": "Włącz lub wyłącz każdą powierzchnię opartą na modelu bez usuwania konfiguracji dostawcy."
-      },
-      "coach-feedback": {
-        "title": "Opinie o Coachu",
-        "subtitle": "Wskaźnik przydatności według wersji promptu, tonu i szczegółowości Coacha z ostatnich 30 dni."
+      "coach": {
+        "title": "Coach",
+        "subtitle": "Powierzchnie asystenta, klucz serwera oraz tabele jakości opinii Coacha i analiz w jednym miejscu."
       },
       "feedback": {
         "title": "Opinie",
diff --git a/src/app/admin/[section]/renderer.tsx b/src/app/admin/[section]/renderer.tsx
index d1e4db387..8bd9e34be 100644
--- a/src/app/admin/[section]/renderer.tsx
+++ b/src/app/admin/[section]/renderer.tsx
@@ -90,33 +90,20 @@ export function AdminSectionRenderer({
           <IntegrationsGroupSection />
         </SectionFrame>
       );
-    case "ai-quality":
+    case "coach":
+      // v1.18.1 — the former ai-quality, assistant, and coach-feedback
+      // sections fold into one Coach area: surface toggles + operator
+      // config first, then the two feedback-quality tables.
       return (
         <SectionFrame
-          title={t("admin.section.ai-quality.title")}
-          subtitle={t("admin.section.ai-quality.subtitle")}
-        >
-          <AiQualitySection />
-        </SectionFrame>
-      );
-    case "assistant":
-      return (
-        <SectionFrame
-          title={t("admin.section.assistant.title")}
-          subtitle={t("admin.section.assistant.subtitle")}
+          title={t("admin.section.coach.title")}
+          subtitle={t("admin.section.coach.subtitle")}
         >
           <AssistantSection />
           <ModuleAvailabilitySection />
           <AiServerKeySection />
-        </SectionFrame>
-      );
-    case "coach-feedback":
-      return (
-        <SectionFrame
-          title={t("admin.section.coach-feedback.title")}
-          subtitle={t("admin.section.coach-feedback.subtitle")}
-        >
           <CoachFeedbackSection />
+          <AiQualitySection />
         </SectionFrame>
       );
     case "feedback":
@@ -207,7 +194,9 @@ export function AdminSectionRenderer({
       // v1.4.36 W4e — About section reused as-is from the settings
       // surface. The component owns its own heading + cards layout
       // so no SectionFrame wrapper.
-      return <AboutSection />;
+      // v1.18.1 E5 — hide the onboarding "Replay tour" card on the admin
+      // surface; it's a user-facing affordance with no admin-side use.
+      return <AboutSection hideTourReplay />;
     default:
       slug satisfies never;
       return null;
diff --git a/src/components/admin/__tests__/sections.test.tsx b/src/components/admin/__tests__/sections.test.tsx
index 4127ed94c..c5b9ba1da 100644
--- a/src/components/admin/__tests__/sections.test.tsx
+++ b/src/components/admin/__tests__/sections.test.tsx
@@ -155,7 +155,10 @@ describe("admin sections — SSR smoke", () => {
     expect(html).toContain("No feedback yet");
   });
 
-  it("admin slug list contains ai-quality (renderer parity)", () => {
-    expect(ADMIN_SECTION_SLUGS).toContain("ai-quality");
+  it("admin slug list contains coach (renderer parity)", () => {
+    // v1.18.1 — ai-quality / assistant / coach-feedback folded into one
+    // "coach" section. The standalone component still renders above; the
+    // slug parity assertion tracks the consolidated nav entry.
+    expect(ADMIN_SECTION_SLUGS).toContain("coach");
   });
 });
diff --git a/src/components/admin/admin-shell.tsx b/src/components/admin/admin-shell.tsx
index c8ce68f90..70924d726 100644
--- a/src/components/admin/admin-shell.tsx
+++ b/src/components/admin/admin-shell.tsx
@@ -23,14 +23,12 @@ import {
   Info,
   KeyRound,
   Inbox,
-  MessageSquare,
   Plug,
   Radio,
   ScrollText,
   Server,
   Settings,
   ShieldAlert,
-  SlidersHorizontal,
   Sparkles,
   Ticket,
   Users,
@@ -76,21 +74,14 @@ export const ADMIN_SECTIONS: readonly AdminSection[] = [
     titleKey: "admin.section.integrations.title",
     icon: Plug,
   },
+  // v1.18.1 — single "Coach" entry replacing the former ai-quality,
+  // assistant, and coach-feedback trio. The section body stacks all
+  // three surfaces so the coach-quality picture lives in one place.
   {
-    slug: "ai-quality",
-    titleKey: "admin.section.ai-quality.title",
+    slug: "coach",
+    titleKey: "admin.section.coach.title",
     icon: Sparkles,
   },
-  {
-    slug: "assistant",
-    titleKey: "admin.section.assistant.title",
-    icon: SlidersHorizontal,
-  },
-  {
-    slug: "coach-feedback",
-    titleKey: "admin.section.coach-feedback.title",
-    icon: MessageSquare,
-  },
   {
     slug: "feedback",
     titleKey: "admin.section.feedback.title",
diff --git a/src/components/admin/backups-section.tsx b/src/components/admin/backups-section.tsx
index 138146e38..e927bc039 100644
--- a/src/components/admin/backups-section.tsx
+++ b/src/components/admin/backups-section.tsx
@@ -333,6 +333,13 @@ export function BackupsSection() {
 
   return (
     <div className="bg-card border-border rounded-xl border p-4 sm:p-6">
+      {/* v1.18.1 E3 — the snapshot count leads (numbers first), the
+          "Run now" button follows, and the explainer + docs link move
+          into the header's description slot. Previously the description
+          sat in a separate `mt-1 pl-7` paragraph that crowded the button
+          directly above it; routing it through the header's `space-y-1`
+          stack restores breathing room and left-aligns it under the
+          title. */}
       <SettingsCardHeader
         icon={Database}
         title={t("admin.section.backups.title")}
@@ -358,22 +365,23 @@ export function BackupsSection() {
             {t("admin.section.backups.runNow")}
           </Button>
         }
+        description={
+          <p>
+            {t("admin.section.backups.description")}{" "}
+            {/* External docs link — `noopener noreferrer` because this
+                leaves the admin shell. */}
+            <a
+              href="https://docs.healthlog.dev/admin/backups"
+              target="_blank"
+              rel="noopener noreferrer"
+              className="text-primary inline-flex items-center gap-1 underline-offset-2 hover:underline"
+            >
+              <BookOpen className="h-3 w-3" aria-hidden="true" />
+              {t("admin.section.backups.docsLink")}
+            </a>
+          </p>
+        }
       />
-      <p className="text-muted-foreground mt-1 pl-7 text-xs">
-        {t("admin.section.backups.description")}{" "}
-        {/* External docs link — Phase E will publish the matching page on
-            the docs site. `noopener noreferrer` because this leaves the
-            admin shell. */}
-        <a
-          href="https://docs.healthlog.dev/admin/backups"
-          target="_blank"
-          rel="noopener noreferrer"
-          className="text-primary inline-flex items-center gap-1 underline-offset-2 hover:underline"
-        >
-          <BookOpen className="h-3 w-3" aria-hidden="true" />
-          {t("admin.section.backups.docsLink")}
-        </a>
-      </p>
 
       {/* Upload card — separate from the table so admins can ingest a
           backup file independently of any existing rows. The visible
diff --git a/src/components/admin/danger-zone-section.tsx b/src/components/admin/danger-zone-section.tsx
index 93cebfdd3..a9607cd90 100644
--- a/src/components/admin/danger-zone-section.tsx
+++ b/src/components/admin/danger-zone-section.tsx
@@ -15,6 +15,7 @@ import {
   AlertDialogTrigger,
 } from "@/components/ui/alert-dialog";
 import { Button } from "@/components/ui/button";
+import { SettingsCardHeader } from "@/components/settings/_card-header";
 import { useTranslations } from "@/lib/i18n/context";
 import { apiDelete } from "@/lib/api/api-fetch";
 
@@ -59,24 +60,25 @@ export function DangerZoneSection() {
   });
 
   return (
+    // v1.18.1 E4 — adopt the shared card shape (rounded-xl border + the
+    // `SettingsCardHeader` icon/title/description/status layout) so the
+    // Danger Zone reads like every other admin section. The destructive
+    // tint + AlertTriangle icon keep it visually flagged as dangerous;
+    // the delete affordance now sits in the header status slot, properly
+    // aligned beside its label rather than floating below a lone icon.
     <div className="bg-destructive/5 border-destructive/30 rounded-xl border p-4 sm:p-6">
-      {/* v1.4.19 A8 / F-08: page header `admin.section.danger-zone.*`
-          already names the section, so the card-level title was a
-          duplicate of the page title. The destructive icon stays so
-          the card still flags itself as dangerous at a glance. */}
-      <AlertTriangle className="text-destructive h-5 w-5" aria-hidden="true" />
-      <div className="mt-4">
-        <p className="text-sm font-medium">{t("admin.deleteAllData")}</p>
-        <p className="text-muted-foreground text-xs">
-          {t("admin.deleteAllDescription")}
-        </p>
-        <div className="mt-3">
+      <SettingsCardHeader
+        icon={AlertTriangle}
+        title={t("admin.deleteAllData")}
+        description={t("admin.deleteAllDescription")}
+        status={
           <AlertDialog>
             <AlertDialogTrigger asChild>
               <Button
                 variant="destructive"
                 size="sm"
                 disabled={wipeAllData.isPending}
+                className="min-h-11"
               >
                 {wipeAllData.isPending ? (
                   <Loader2 className="h-3.5 w-3.5 animate-spin motion-reduce:animate-none" />
@@ -111,17 +113,17 @@ export function DangerZoneSection() {
               </AlertDialogFooter>
             </AlertDialogContent>
           </AlertDialog>
-        </div>
-        {wipeMsg && (
-          <p
-            className={`mt-2 text-sm ${
-              wipeAllData.isError ? "text-destructive" : "text-dracula-green"
-            }`}
-          >
-            {wipeMsg}
-          </p>
-        )}
-      </div>
+        }
+      />
+      {wipeMsg && (
+        <p
+          className={`mt-3 pl-7 text-sm ${
+            wipeAllData.isError ? "text-destructive" : "text-dracula-green"
+          }`}
+        >
+          {wipeMsg}
+        </p>
+      )}
     </div>
   );
 }
diff --git a/src/components/admin/section-slugs.ts b/src/components/admin/section-slugs.ts
index 8581cd072..9fa94f773 100644
--- a/src/components/admin/section-slugs.ts
+++ b/src/components/admin/section-slugs.ts
@@ -14,13 +14,13 @@ export const ADMIN_SECTION_SLUGS = [
   "general",
   "services",
   "integrations",
-  "ai-quality",
-  // v1.4.31 — operator-side assistant feature-flag toggles. Sits
-  // between `ai-quality` (provider config) and `coach-feedback`
-  // (in-app feedback inbox) per
-  // `.planning/research/v15-assistant-optional.md` Part B.
-  "assistant",
-  "coach-feedback",
+  // v1.18.1 — the former `ai-quality`, `assistant`, and `coach-feedback`
+  // sections collapse into one "Coach" area. It holds the assistant
+  // surface toggles, the server-key + module-availability operator
+  // config, and both feedback-quality tables (Coach + Insights). Three
+  // navigation entries for one coherent coach-quality concern read as
+  // clutter; one card opens the full picture.
+  "coach",
   "feedback",
   "reminders",
   "users",
diff --git a/src/components/settings/about-section.tsx b/src/components/settings/about-section.tsx
index cfbaca8d0..95f921318 100644
--- a/src/components/settings/about-section.tsx
+++ b/src/components/settings/about-section.tsx
@@ -118,7 +118,18 @@ export function UpdateBadge({
   );
 }
 
-export function AboutSection() {
+export interface AboutSectionProps {
+  /**
+   * v1.18.1 E5 — suppress the "Replay tour" card. The admin → Über
+   * surface reuses this component but the onboarding tour is a
+   * user-facing affordance with no place in the admin console, so the
+   * admin renderer passes `hideTourReplay`. The Settings → About surface
+   * leaves it on.
+   */
+  hideTourReplay?: boolean;
+}
+
+export function AboutSection({ hideTourReplay = false }: AboutSectionProps = {}) {
   const { t } = useTranslations();
   const fmt = useFormatters();
   // Pull the auth user — only needed so the "Replay the tour" button
@@ -364,49 +375,55 @@ export function AboutSection() {
           settings shell), so the button lives here next to version +
           links. Mirrors the stack-on-mobile / right-align-on-desktop
           contract used by the Account section's "Restart onboarding
-          tour" card so the two surfaces feel consistent. */}
-      <div className="bg-card border-border rounded-xl border p-4 sm:p-6">
-        <div className="flex flex-col gap-3 sm:flex-row sm:items-start sm:justify-between sm:gap-2">
-          <div className="flex items-start gap-2">
-            <Compass className="text-muted-foreground mt-0.5 h-5 w-5 shrink-0" />
-            <div className="space-y-1">
-              <h2 className="text-lg font-semibold">
-                {t("settings.about.tourReplay")}
-              </h2>
-              <p className="text-muted-foreground text-xs">
-                {t("settings.about.tourReplayHint")}
-              </p>
+          tour" card so the two surfaces feel consistent.
+
+          v1.18.1 E5 — hidden on the admin → Über surface (`hideTourReplay`):
+          the onboarding tour is a user-facing affordance with no place in
+          the admin console. */}
+      {!hideTourReplay && (
+        <div className="bg-card border-border rounded-xl border p-4 sm:p-6">
+          <div className="flex flex-col gap-3 sm:flex-row sm:items-start sm:justify-between sm:gap-2">
+            <div className="flex items-start gap-2">
+              <Compass className="text-muted-foreground mt-0.5 h-5 w-5 shrink-0" />
+              <div className="space-y-1">
+                <h2 className="text-lg font-semibold">
+                  {t("settings.about.tourReplay")}
+                </h2>
+                <p className="text-muted-foreground text-xs">
+                  {t("settings.about.tourReplayHint")}
+                </p>
+              </div>
             </div>
+            <Button
+              type="button"
+              variant="outline"
+              onClick={handleReplayTour}
+              disabled={replayingTour}
+              data-testid="about-replay-tour"
+              className="w-full shrink-0 sm:w-auto"
+            >
+              {replayingTour ? (
+                <Loader2 className="h-4 w-4 animate-spin motion-reduce:animate-none" />
+              ) : (
+                <Compass className="h-4 w-4" />
+              )}
+              {t("settings.about.tourReplay")}
+            </Button>
           </div>
-          <Button
-            type="button"
-            variant="outline"
-            onClick={handleReplayTour}
-            disabled={replayingTour}
-            data-testid="about-replay-tour"
-            className="w-full shrink-0 sm:w-auto"
-          >
-            {replayingTour ? (
-              <Loader2 className="h-4 w-4 animate-spin motion-reduce:animate-none" />
-            ) : (
-              <Compass className="h-4 w-4" />
-            )}
-            {t("settings.about.tourReplay")}
-          </Button>
+          {tourFeedback && (
+            <p
+              role="alert"
+              className={`mt-2 pl-7 text-xs ${
+                tourFeedback.type === "success"
+                  ? "text-success"
+                  : "text-destructive"
+              }`}
+            >
+              {tourFeedback.text}
+            </p>
+          )}
         </div>
-        {tourFeedback && (
-          <p
-            role="alert"
-            className={`mt-2 pl-7 text-xs ${
-              tourFeedback.type === "success"
-                ? "text-success"
-                : "text-destructive"
-            }`}
-          >
-            {tourFeedback.text}
-          </p>
-        )}
-      </div>
+      )}
 
       {/* v1.4.36 W4f — the dedicated "Updates" card with the
           manual "Check for updates" button is gone. The 24 h auto-