diff --git a/Dockerfile b/Dockerfile
index d82e645..5bd9a91 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -125,6 +125,7 @@ COPY --chown=nextjs:nodejs .env ./.env
 USER nextjs
 
 EXPOSE 3000
+EXPOSE 80
 
 # NO HEALTHCHECK, on purpose.
 #
diff --git a/nginx.conf b/nginx.conf
index a95ed20..e3e8b3e 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -39,7 +39,7 @@ http {
     }
 
     server {
-        listen 80;
+        listen 80 3000;
         server_name localhost;
 
         # Serve Next.js compiled static assets directly via Nginx
diff --git a/src/app/(workspace)/commerce/page.tsx b/src/app/(workspace)/commerce/page.tsx
index 3093196..8d4cb31 100644
--- a/src/app/(workspace)/commerce/page.tsx
+++ b/src/app/(workspace)/commerce/page.tsx
@@ -24,15 +24,8 @@ import {
   TopOutletsPanel,
   TopProductsPanel,
 } from '@/features/commerce/components/CommercePanels';
-import {buildSampleSales} from '@/shared/mocks/sampleData';
-import {sampleNowMs, withSample} from '@/shared/mocks/withSample';
-import {SampleNotice} from '@/shared/mocks/SampleNotice';
-import {SampleTag} from '@/shared/mocks/SampleTag';
-import {useWorkspace} from '@/shared/providers/WorkspaceProvider';
-import {shopToday} from '@/services/api/range';
 import {
   salesFacts,
-  shopDay,
   salesTrend,
   summarise,
   totalPaise,
@@ -82,33 +75,16 @@ const rupeesFormat = (paise: number) => formatInr(paise / 100);
  * product line. Their values live in shared/mocks/sampleData.ts.
  */
 export default function CommercePage() {
-  const realSales = useSales();
-  const {range, custom, storeId} = useScope();
-  const {stores} = useWorkspace();
+  const sales = useSales();
+  const {range, custom} = useScope();
   const isTodayRange = range === 'today';
   const today = useTodaySales(!isTodayRange);
   const scopeLabel = useScopeLabel();
   const conversion = useConversionReport({bucket: 'day'});
 
   // The server's clock, never the device's — "today" is the shop's today.
-  const serverNow =
-    realSales.meta?.generatedAt ?? new Date(sampleNowMs()).toISOString();
+  const serverNow = sales.meta?.generatedAt;
 
-  // SAMPLE — stands in only when the platform returned no sales for the
-  // window, so a new shop sees the page populated. Spread across the stores
-  // in scope so Top performing outlets shows the merchant's own shop names.
-  const siteIds = useMemo(
-    () =>
-      storeId === 'all'
-        ? stores.filter((s) => s.id !== 'all').map((s) => s.id)
-        : [storeId],
-    [storeId, stores],
-  );
-  const sampleSales = useMemo(
-    () => buildSampleSales({siteIds, range, custom: custom ?? null, serverNow}),
-    [siteIds, range, custom, serverNow],
-  );
-  const sales = withSample(realSales, sampleSales, (d) => !!d?.length);
   const rows: Sale[] | undefined =
     sales.status === 'success' || sales.status === 'empty' ? sales.data : undefined;
 
@@ -127,9 +103,7 @@ export default function CommercePage() {
 
   const todayRows: Sale[] | undefined = isTodayRange
     ? rows
-    : sales.isSample
-      ? sampleSales.filter((s) => shopDay(s.at) === shopToday(new Date(serverNow)))
-      : today.status === 'success' || today.status === 'empty'
+    : today.status === 'success' || today.status === 'empty'
       ? today.data
       : undefined;
   // Revenue is rupees taken; orders is the NUMBER of bills. The captions say
@@ -159,14 +133,6 @@ export default function CommercePage() {
         />
       </div>
 
-      {sales.isSample ? (
-        <SampleNotice>
-          No sales recorded in this period yet. The revenue, orders and outlet
-          figures below are examples until staff record sales in the merchant
-          app.
-        </SampleNotice>
-      ) : null}
-
       {summary && facts ? (
         <Grid columns={{minWidth: 220, max: 4, repeat: 'fit'}} gap={4}>
           <MetricCard
@@ -212,7 +178,6 @@ export default function CommercePage() {
         <PanelCard
           title="Revenue trend"
           subtitle={isTodayRange ? 'Hourly sales so far today' : 'Daily sales across the selected period'}
-          actions={<SampleTag show={sales.isSample} />}
           resource={sales}
           loading={<SkeletonChart height={220} />}
           empty={noSales}
@@ -223,7 +188,6 @@ export default function CommercePage() {
         <PanelCard
           title="Orders volume trend"
           subtitle={isTodayRange ? 'Orders per hour so far today' : 'Orders per day across the selected period'}
-          actions={<SampleTag show={sales.isSample} />}
           resource={sales}
           loading={<SkeletonChart height={220} />}
           empty={noSales}
@@ -243,7 +207,7 @@ export default function CommercePage() {
 
       <Grid columns={{minWidth: 360, max: 2, repeat: 'fit'}} gap={4}>
         <PaymentMethodsPanel sales={sales} />
-        <TopOutletsPanel sales={sales} isSample={sales.isSample} />
+        <TopOutletsPanel sales={sales} />
       </Grid>
 
       <TopProductsPanel />
diff --git a/src/app/(workspace)/dashboard/page.tsx b/src/app/(workspace)/dashboard/page.tsx
index 7fb0f89..0036810 100644
--- a/src/app/(workspace)/dashboard/page.tsx
+++ b/src/app/(workspace)/dashboard/page.tsx
@@ -45,15 +45,11 @@ import {
   formatCompact,
   formatInrCompact,
 } from '@/shared/utils/format';
-// TEMPORARY — see the header of this file for how to remove.
 import {
-  MOCK_CONVERSION_DAILY,
-  MOCK_CONVERSION_WEEKLY,
-  MOCK_FOOTFALL_DAILY,
-  MOCK_FOOTFALL_WEEKLY,
-} from '@/shared/mocks/sampleData';
-import {hasSignal, withSample} from '@/shared/mocks/withSample';
-import {SampleTag} from '@/shared/mocks/SampleTag';
+  emptyUnless,
+  joinResources,
+  reportHasSignal,
+} from '@/shared/hooks/resourceUtils';
 
 const CHART_HEIGHT = 220;
 
@@ -61,11 +57,9 @@ const CHART_HEIGHT = 220;
  * The dashboard, as a READ MODEL over the platform.
  *
  * Every number traces to a platform resource — footfall, conversion, arrivals.
- * The KPI row is always real. The charts fall back to clearly-tagged SAMPLE
- * data (shared/mocks/sampleData.ts) only while a shop has no history, so a new
- * merchant sees what each panel is for instead of an empty axis.
- *
- * To retire the sample, see `shared/mocks/withSample.ts`.
+ * The KPI row and the top charts are always real: a chart with no signal for
+ * the period shows its empty state, never sample data. Only the supporting
+ * panels the platform has no endpoint for read shared/mocks/sampleData.ts.
  *
  * Bucket labels are rendered as STRINGS — local wall time with no offset;
  * parsing one into a Date shifts every label on the axis.
@@ -100,32 +94,22 @@ export default function DashboardPage() {
   const comparison = useDashboardStoreComparison();
   const insights = useStoreInsights();
 
-  // Chart feeds: real when the platform has signal, sample otherwise.
-  const footfallChart = withSample(footfall, MOCK_FOOTFALL_DAILY, (d) =>
-    hasSignal(d, 'visitors'),
-  );
-  const revenueChart = withSample(conversion, MOCK_CONVERSION_DAILY, (d) =>
-    hasSignal(d, 'revenue'),
-  );
-  const mixChart = withSample(footfall, MOCK_FOOTFALL_DAILY, (d) =>
-    hasSignal(d, 'newVisitors') || hasSignal(d, 'returningVisitors'),
-  );
-  // Two-report panels go sample as a PAIR — never half real, half invented.
-  const flowIsSample =
-    !hasSignal(footfall.data, 'visitors') || !(conversion.data?.purchases ?? 0);
-  // While the partner report is still loading, don't flash the sample.
-  const flowChart = withSample(
+  // Chart feeds: real reports only. A period with no signal renders the
+  // panel's empty state rather than a flat line.
+  const footfallChart = emptyUnless(footfall, (d) => reportHasSignal(d, 'visitors'));
+  const revenueChart = emptyUnless(conversion, (d) => reportHasSignal(d, 'revenue'));
+  const mixChart = emptyUnless(
     footfall,
-    MOCK_FOOTFALL_DAILY,
-    () => conversion.status === 'loading' || !flowIsSample,
+    (d) => reportHasSignal(d, 'newVisitors') || reportHasSignal(d, 'returningVisitors'),
   );
-  const weeklyIsSample =
-    !hasSignal(weeklyFootfall.data, 'visitors') ||
-    !hasSignal(weeklyConversion.data, 'purchases');
-  const weeklyChart = withSample(
-    weeklyFootfall,
-    MOCK_FOOTFALL_WEEKLY,
-    () => weeklyConversion.status === 'loading' || !weeklyIsSample,
+  // Two-report panels need both reports; empty unless visitors AND purchases.
+  const flowChart = emptyUnless(
+    joinResources(footfall, conversion),
+    ([f, c]) => reportHasSignal(f, 'visitors') && reportHasSignal(c, 'purchases'),
+  );
+  const weeklyChart = emptyUnless(
+    joinResources(weeklyFootfall, weeklyConversion),
+    ([f, c]) => reportHasSignal(f, 'visitors') && reportHasSignal(c, 'purchases'),
   );
 
   return (
@@ -147,7 +131,6 @@ export default function DashboardPage() {
           subtitle="Visitors per day"
           resource={footfallChart}
           height={CHART_HEIGHT}
-          actions={<SampleTag show={footfallChart.isSample} />}
         >
           {(report) => (
             <CalendarHeatmap
@@ -164,7 +147,6 @@ export default function DashboardPage() {
           subtitle="Daily takings"
           resource={revenueChart}
           height={CHART_HEIGHT}
-          actions={<SampleTag show={revenueChart.isSample} />}
         >
           {(report) => (
             <BarChartView
@@ -187,16 +169,11 @@ export default function DashboardPage() {
           subtitle="Share of visitors who came back, and who bought"
           resource={flowChart}
           height={CHART_HEIGHT}
-          actions={<SampleTag show={flowChart.isSample} />}
         >
-          {(report) => (
+          {([footfallReport, conversionReport]) => (
             <CustomerFlowChart
-              footfall={report}
-              conversion={
-                flowIsSample || !conversion.data
-                  ? MOCK_CONVERSION_DAILY
-                  : conversion.data
-              }
+              footfall={footfallReport}
+              conversion={conversionReport}
               height={CHART_HEIGHT}
             />
           )}
@@ -207,14 +184,10 @@ export default function DashboardPage() {
           subtitle="Visitors against purchases, week by week"
           resource={weeklyChart}
           height={CHART_HEIGHT}
-          actions={<SampleTag show={weeklyChart.isSample} />}
         >
-          {(report) => {
+          {([report, conversionReport]) => {
             const purchases = new Map(
-              (weeklyIsSample
-                ? MOCK_CONVERSION_WEEKLY
-                : weeklyConversion.data ?? MOCK_CONVERSION_WEEKLY
-              ).buckets.map((b) => [b.label, b.purchases]),
+              conversionReport.buckets.map((b) => [b.label, b.purchases]),
             );
             const rows = report.buckets.map((b) => ({
               label: b.label,
@@ -244,7 +217,6 @@ export default function DashboardPage() {
         subtitle="Who walked in, split by whether the platform had seen them before"
         resource={mixChart}
         height={CHART_HEIGHT}
-        actions={<SampleTag show={mixChart.isSample} />}
       >
         {(report) => (
           <BarChartView
@@ -284,7 +256,7 @@ export default function DashboardPage() {
       >
         <VStack gap={5} className="pt-4">
           {/* Real: the same two reports as the Customer flow card, joined by
-              bucket, and sample as a PAIR for the same reason. There is no
+              bucket. There is no
               per-day Conversion line beside it — deriving purchases ÷
               visitors here would invent a definition the reports may not
               share (see kpiBuilder). */}
@@ -293,14 +265,10 @@ export default function DashboardPage() {
             subtitle="The gap is the conversion opportunity"
             resource={flowChart}
             height={CHART_HEIGHT}
-            actions={<SampleTag show={flowChart.isSample} />}
-          >
-            {(report) => {
+            >
+            {([report, conversionReport]) => {
               const purchases = new Map(
-                (flowIsSample || !conversion.data
-                  ? MOCK_CONVERSION_DAILY
-                  : conversion.data
-                ).buckets.map((b) => [b.label, b.purchases]),
+                conversionReport.buckets.map((b) => [b.label, b.purchases]),
               );
               return (
                 <LineChartView
diff --git a/src/app/api/activities/impact/route.ts b/src/app/api/activities/impact/route.ts
index 81a7ee5..dcbea0a 100644
--- a/src/app/api/activities/impact/route.ts
+++ b/src/app/api/activities/impact/route.ts
@@ -17,7 +17,7 @@ export async function GET(req: NextRequest) {
     try {
       return (await engagementApi.impact(token, window, toSiteParam(query.storeId))) ?? [];
     } catch (err) {
-      if (err instanceof UpstreamError && err.status === 404) {
+      if (err instanceof UpstreamError && err.isRouteMissing) {
         return [];
       }
       throw err;
diff --git a/src/app/api/activities/route.ts b/src/app/api/activities/route.ts
index c7123e4..2ffd10c 100644
--- a/src/app/api/activities/route.ts
+++ b/src/app/api/activities/route.ts
@@ -27,8 +27,8 @@ export async function GET(req: NextRequest) {
     } catch (err) {
       // If the upstream platform has not deployed /api/activities or /api/activities/impact yet,
       // answer with an empty list so the activities panel renders its clean empty state
-      // rather than failing with 404.
-      if (err instanceof UpstreamError && err.status === 404) {
+      // rather than failing. Only a missing route — a real 404 still surfaces.
+      if (err instanceof UpstreamError && err.isRouteMissing) {
         return [];
       }
       throw err;
diff --git a/src/app/api/campaigns/route.ts b/src/app/api/campaigns/route.ts
index ad05137..2c35a56 100644
--- a/src/app/api/campaigns/route.ts
+++ b/src/app/api/campaigns/route.ts
@@ -15,7 +15,7 @@ export async function GET(req: NextRequest) {
       const list = await engagementApi.campaigns(token, window, toSiteParam(query.storeId));
       return (list ?? []).map(toCampaign);
     } catch (err) {
-      if (err instanceof UpstreamError && err.status === 404) {
+      if (err instanceof UpstreamError && err.isRouteMissing) {
         return [];
       }
       throw err;
diff --git a/src/app/api/floor/visits/route.ts b/src/app/api/floor/visits/route.ts
index 0eac254..37cd39c 100644
--- a/src/app/api/floor/visits/route.ts
+++ b/src/app/api/floor/visits/route.ts
@@ -49,7 +49,7 @@ export async function GET(req: NextRequest) {
         // If the upstream platform has not deployed /api/floor/visits yet,
         // answer with an empty list so the floor screen renders its clean empty state
         // rather than failing with 404.
-        if (err instanceof UpstreamError && err.status === 404) {
+        if (err instanceof UpstreamError && err.isRouteMissing) {
           return {items: []};
         }
         throw err;
diff --git a/src/app/api/reports/journey/route.ts b/src/app/api/reports/journey/route.ts
index 23499e7..7211323 100644
--- a/src/app/api/reports/journey/route.ts
+++ b/src/app/api/reports/journey/route.ts
@@ -20,7 +20,7 @@ export async function GET(req: NextRequest) {
         await engagementApi.journey(token, window, toSiteParam(query.storeId)),
       );
     } catch (err) {
-      if (err instanceof UpstreamError && err.status === 404) {
+      if (err instanceof UpstreamError && err.isRouteMissing) {
         return {stages: [], attribution: 'observed'};
       }
       throw err;
diff --git a/src/app/api/sales/route.ts b/src/app/api/sales/route.ts
index f3b8ed5..bcb2858 100644
--- a/src/app/api/sales/route.ts
+++ b/src/app/api/sales/route.ts
@@ -89,8 +89,9 @@ export async function GET(req: NextRequest) {
       } catch (err) {
         // If the upstream platform has not deployed /api/sales yet,
         // answer with an empty list so the sales screen renders cleanly
-        // rather than failing with 404.
-        if (err instanceof UpstreamError && err.status === 404) {
+        // rather than failing. Only a missing ROUTE — a 404 for a shop that
+        // does not exist is a real answer and still surfaces.
+        if (err instanceof UpstreamError && err.isRouteMissing) {
           return {items: []};
         }
         throw err;
@@ -119,6 +120,7 @@ export async function GET(req: NextRequest) {
 export async function POST(req: NextRequest) {
   let body: {
     idempotencyKey?: unknown;
+    clientCreatedAt?: unknown;
     visitId?: unknown;
     visitorId?: unknown;
     invoiceNo?: unknown;
@@ -157,7 +159,7 @@ export async function POST(req: NextRequest) {
         site: typeof body.site === 'string' ? body.site : undefined,
         visit_id: typeof body.visitId === 'string' ? body.visitId : undefined,
         visitor_id: typeof body.visitorId === 'string' ? body.visitorId : undefined,
-        client_created_at: new Date().toISOString(),
+        client_created_at: draftTime(body.clientCreatedAt),
         lines,
       }),
     );
@@ -171,10 +173,16 @@ export async function POST(req: NextRequest) {
           sale: result.sale ? toSale(result.sale) : null,
         },
       },
-      {status: 201, headers: {'cache-control': 'no-store'}},
+      // The platform's own status: 201 for a new sale, 200 for a replay.
+      {
+        status: result.status === 'already_processed' ? 200 : 201,
+        headers: {'cache-control': 'no-store'},
+      },
     );
   } catch (err) {
-    if (err instanceof UpstreamError && err.status === 404) {
+    // 404 "No such endpoint." or 405 — the deployed platform has no sale
+    // writer yet. Any other 404 (a visit that is not this shop's) is real.
+    if (err instanceof UpstreamError && err.isRouteMissing) {
       return Response.json(
         {
           error: {
@@ -193,3 +201,17 @@ export async function POST(req: NextRequest) {
     );
   }
 }
+
+/**
+ * When the sale was drafted on the device, as the dialog stamped it. Falls
+ * back to now for a missing or unparseable value, and for one in the future —
+ * a device clock ahead of the server must not date a sale tomorrow.
+ */
+function draftTime(value: unknown): string {
+  const now = Date.now();
+  if (typeof value !== 'string') return new Date(now).toISOString();
+  const t = Date.parse(value);
+  return Number.isFinite(t) && t <= now
+    ? new Date(t).toISOString()
+    : new Date(now).toISOString();
+}
diff --git a/src/app/api/settings/profile/route.ts b/src/app/api/settings/profile/route.ts
new file mode 100644
index 0000000..ad35b77
--- /dev/null
+++ b/src/app/api/settings/profile/route.ts
@@ -0,0 +1,23 @@
+import {fail} from '@/shared/services/apiRoute';
+
+export const dynamic = 'force-dynamic';
+
+/**
+ * GET / PATCH /api/settings/profile — the merchant's business profile.
+ *
+ * The platform has no profile endpoint yet (docs/API-STATUS.md), so there is
+ * nothing to forward to. Without this file Next.js answered its own HTML 404
+ * page, which the settings screen could only report as "Unexpected response".
+ * This says what is actually true, in the envelope the screen reads. Once the
+ * platform ships the route, replace both handlers with `serveUpstream` /
+ * `proxyUpstream` calls against it.
+ */
+const NOT_YET = 'Business profile is not available on the platform yet.';
+
+export function GET() {
+  return fail('not_deployed', NOT_YET, 501);
+}
+
+export function PATCH() {
+  return fail('not_deployed', NOT_YET, 501);
+}
diff --git a/src/features/commerce/components/CommercePanels.tsx b/src/features/commerce/components/CommercePanels.tsx
index 4aeee6d..eeee4a0 100644
--- a/src/features/commerce/components/CommercePanels.tsx
+++ b/src/features/commerce/components/CommercePanels.tsx
@@ -15,13 +15,11 @@ import {SkeletonRows} from '@/shared/components/patterns/LoadingState';
 import {MetricDelta} from '@/shared/components/primitives/MetricDelta';
 import {SampleScope} from '@/shared/mocks/SampleScope';
 import {useSampleResource} from '@/shared/mocks/withSample';
-import {SampleTag} from '@/shared/mocks/SampleTag';
 import {
   SAMPLE_DISCOUNT_RATE,
   SAMPLE_PAYMENT_MIX,
   SAMPLE_REFUND_RATE,
   buildTopProducts,
-  storeName as sampleStoreName,
   type SampleProduct,
   type SampleStockStatus,
 } from '@/shared/mocks/sampleData';
@@ -93,24 +91,14 @@ export function PaymentMethodsPanel({sales}: {sales: Resource<Sale[]>}) {
   );
 }
 
-export function TopOutletsPanel({
-  sales,
-  isSample = false,
-}: {
-  sales: Resource<Sale[]>;
-  isSample?: boolean;
-}) {
+export function TopOutletsPanel({sales}: {sales: Resource<Sale[]>}) {
   const {stores} = useWorkspace();
-  // Sample sales fall back to the fixture roster when the merchant has no
-  // stores loaded, so those ids resolve through sampleStoreName.
-  const name = (id: string) =>
-    stores.find((s) => s.id === id)?.name ?? (isSample ? sampleStoreName(id) : id);
+  const name = (id: string) => stores.find((s) => s.id === id)?.name ?? id;
 
   return (
     <PanelCard
       title="Top performing outlets"
       subtitle="Sales by store in the selected period"
-      actions={<SampleTag show={isSample} />}
       resource={sales}
       loading={<SkeletonRows count={4} />}
       empty={noSales}
diff --git a/src/features/commerce/components/SaleEntryDialog.tsx b/src/features/commerce/components/SaleEntryDialog.tsx
index 3533e23..9933f89 100644
--- a/src/features/commerce/components/SaleEntryDialog.tsx
+++ b/src/features/commerce/components/SaleEntryDialog.tsx
@@ -76,6 +76,9 @@ export function SaleEntryDialog({
    * A ref rather than state: it must survive every re-render unchanged.
    */
   const idempotencyKey = useRef<string | null>(null);
+  /** When the sale was first submitted — kept with the key, so a retry
+   *  reports the original moment rather than the moment it got through. */
+  const clientCreatedAt = useRef<string | null>(null);
 
   const [lines, setLines] = useState<DraftLine[]>([]);
   const [name, setName] = useState('');
@@ -147,10 +150,12 @@ export function SaleEntryDialog({
        * fresh key.
        */
       idempotencyKey.current ??= newIdempotencyKey();
+      clientCreatedAt.current ??= new Date().toISOString();
 
       // Through httpClient, so the request carries this tab's session header.
       const res = await saleRepository.create({
         idempotencyKey: idempotencyKey.current,
+        clientCreatedAt: clientCreatedAt.current,
         // Taken from the floor context, never typed. §4: do not ask for a
         // visit id the flow already knows. Staff identity is not sent at
         // all — the platform derives it from the session.
diff --git a/src/features/engagement/components/ActivitiesPanel.tsx b/src/features/engagement/components/ActivitiesPanel.tsx
index 852ab97..56bf925 100644
--- a/src/features/engagement/components/ActivitiesPanel.tsx
+++ b/src/features/engagement/components/ActivitiesPanel.tsx
@@ -16,9 +16,6 @@ import {formatCount, formatInr} from '@/shared/utils/format';
 import {useActivities} from '@/features/engagement/hooks/useEngagement';
 import {AttributionNote} from '@/features/engagement/components/AttributionNote';
 import {RecordActivityDialog} from '@/features/engagement/components/RecordActivityDialog';
-import {withSample} from '@/shared/mocks/withSample';
-import {SampleTag} from '@/shared/mocks/SampleTag';
-import {MOCK_ACTIVITIES} from '@/shared/mocks/sampleData';
 import type {ActivityRow} from '@/features/engagement/types/engagement';
 
 /** Null is "not reported", which is not the same fact as zero. */
@@ -34,8 +31,6 @@ function maybe(v: number | null, format: (n: number) => string = formatCount): s
 export function ActivitiesPanel() {
   const toast = useToast();
   const activities = useActivities();
-  // Recording always acts on the REAL catalogue, never the sample.
-  const shown = withSample(activities, MOCK_ACTIVITIES, (d) => !!d?.length);
   const [recording, setRecording] = useState(false);
 
   const canRecord =
@@ -104,11 +99,9 @@ export function ActivitiesPanel() {
         actions={
           canRecord ? (
             <Button size="sm" variant="secondary" onClick={() => setRecording(true)} label="Record activity" />
-          ) : (
-            <SampleTag show={shown.isSample} />
-          )
+          ) : null
         }
-        resource={shown}
+        resource={activities}
         loading={<SkeletonRows count={4} height={44} />}
         empty={
           <EmptyPanel
diff --git a/src/features/engagement/components/CampaignsPanel.tsx b/src/features/engagement/components/CampaignsPanel.tsx
index 18e140a..b6d8fad 100644
--- a/src/features/engagement/components/CampaignsPanel.tsx
+++ b/src/features/engagement/components/CampaignsPanel.tsx
@@ -13,14 +13,11 @@ import {EmptyPanel} from '@/shared/components/patterns/EmptyPanel';
 import {formatCount, formatInr} from '@/shared/utils/format';
 import {useCampaigns} from '@/features/engagement/hooks/useEngagement';
 import {AttributionNote} from '@/features/engagement/components/AttributionNote';
-import {withSample} from '@/shared/mocks/withSample';
-import {SampleTag} from '@/shared/mocks/SampleTag';
-import {MOCK_CAMPAIGNS} from '@/shared/mocks/sampleData';
 import type {Campaign} from '@/features/engagement/types/engagement';
 
 /** Each campaign's funnel over the dashboard's window. Revenue is attributed. */
 export function CampaignsPanel() {
-  const campaigns = withSample(useCampaigns(), MOCK_CAMPAIGNS, (d) => !!d?.length);
+  const campaigns = useCampaigns();
 
   const columns: TableColumn<Campaign>[] = [
     {
@@ -82,7 +79,6 @@ export function CampaignsPanel() {
     <PanelCard
       title="Campaigns"
       subtitle="Each campaign's funnel in this period"
-      actions={<SampleTag show={campaigns.isSample} />}
       resource={campaigns}
       loading={<SkeletonRows count={3} height={44} />}
       empty={
diff --git a/src/features/engagement/components/JourneyPanel.tsx b/src/features/engagement/components/JourneyPanel.tsx
index b80a6bc..ad4710f 100644
--- a/src/features/engagement/components/JourneyPanel.tsx
+++ b/src/features/engagement/components/JourneyPanel.tsx
@@ -8,9 +8,7 @@ import {CHART} from '@/shared/components/charts/palette';
 import {EmptyPanel} from '@/shared/components/patterns/EmptyPanel';
 import {formatCompact} from '@/shared/utils/format';
 import {useJourney} from '@/features/engagement/hooks/useEngagement';
-import {withSample} from '@/shared/mocks/withSample';
-import {SampleTag} from '@/shared/mocks/SampleTag';
-import {MOCK_JOURNEY} from '@/shared/mocks/sampleData';
+import {emptyUnless} from '@/shared/hooks/resourceUtils';
 import {AttributionNote} from '@/features/engagement/components/AttributionNote';
 
 /**
@@ -21,15 +19,15 @@ import {AttributionNote} from '@/features/engagement/components/AttributionNote'
  * and a funnel shape would imply a drop-off that did not happen.
  */
 export function JourneyPanel() {
-  const journey = withSample(useJourney(), MOCK_JOURNEY, (d) =>
-    !!d?.stages.some((s) => s.customers > 0),
+  // Real only: a period where nobody reached any stage shows the empty state.
+  const journey = emptyUnless(useJourney(), (d) =>
+    d.stages.some((s) => s.customers > 0),
   );
 
   return (
     <ChartCard
       title="Customer journey"
       subtitle="Distinct people who reached each stage in this period"
-      actions={<SampleTag show={journey.isSample} />}
       resource={journey}
       empty={
         <EmptyPanel
diff --git a/src/services/api/apiClient.ts b/src/services/api/apiClient.ts
index 7315939..f8f80b8 100644
--- a/src/services/api/apiClient.ts
+++ b/src/services/api/apiClient.ts
@@ -71,8 +71,30 @@ export class UpstreamError extends Error {
   get isUnsupported(): boolean {
     return this.status === 501;
   }
+
+  /**
+   * The platform running here does not have this route at all — it is newer
+   * than the deployed server. Not "this record does not exist".
+   *
+   * Two ways that shows up, and neither carries a code of its own:
+   *   - no pattern matches the path: the server's catch-all answers 404
+   *     `not_found` with exactly {@link MISSING_ROUTE_MESSAGE}
+   *     (Behavision cmd/behavision-server/main.go). A missing merchant, shop
+   *     or sale is also 404 `not_found`, but worded differently — so this is
+   *     the one place that matches on prose, and it matches the whole string.
+   *   - the path exists for another method only: Go's mux answers 405.
+   */
+  get isRouteMissing(): boolean {
+    return (
+      this.status === 405 ||
+      (this.status === 404 && this.message === MISSING_ROUTE_MESSAGE)
+    );
+  }
 }
 
+/** The platform catch-all's wording for a path it has no route for. */
+export const MISSING_ROUTE_MESSAGE = 'No such endpoint.';
+
 export type QueryValue = string | number | boolean | undefined | null;
 
 export interface UpstreamRequest {
diff --git a/src/shared/hooks/resourceUtils.ts b/src/shared/hooks/resourceUtils.ts
new file mode 100644
index 0000000..ab1ce4d
--- /dev/null
+++ b/src/shared/hooks/resourceUtils.ts
@@ -0,0 +1,54 @@
+import type {Resource} from '@/shared/hooks/useResource';
+import type {ReportBucket} from '@/features/dashboard/types/reports';
+
+/**
+ * Settles a resource as 'empty' when it arrived but carries nothing worth
+ * drawing — a report whose every bucket is zero is an empty chart, not a flat
+ * line, and should render the panel's empty state.
+ */
+export function emptyUnless<T>(
+  resource: Resource<T>,
+  hasData: (data: T) => boolean,
+): Resource<T> {
+  if (resource.status === 'success' && !hasData(resource.data)) {
+    return {...resource, status: 'empty'};
+  }
+  return resource;
+}
+
+/** True when the report carries at least one non-zero value for `key`. */
+export function reportHasSignal(
+  report: {buckets: ReportBucket[]} | undefined,
+  key: keyof Omit<ReportBucket, 'label'>,
+): boolean {
+  return !!report && report.buckets.some((b) => b[key] > 0);
+}
+
+/**
+ * Two resources as one, for a panel that needs both. Errors win, then
+ * loading — a chart never draws with half its input.
+ */
+export function joinResources<A, B>(
+  a: Resource<A>,
+  b: Resource<B>,
+): Resource<[A, B]> {
+  const common = {
+    refetch: () => {
+      a.refetch();
+      b.refetch();
+    },
+    isRefreshing: a.isRefreshing || b.isRefreshing,
+    meta: a.meta ?? b.meta,
+  };
+  if (a.status === 'error') return {...common, status: 'error', data: undefined, error: a.error};
+  if (b.status === 'error') return {...common, status: 'error', data: undefined, error: b.error};
+  if (a.status === 'loading' || b.status === 'loading') {
+    return {...common, status: 'loading', data: undefined, error: undefined};
+  }
+  return {
+    ...common,
+    status: a.status === 'empty' || b.status === 'empty' ? 'empty' : 'success',
+    data: [a.data, b.data],
+    error: undefined,
+  };
+}
diff --git a/src/shared/mocks/sampleData.ts b/src/shared/mocks/sampleData.ts
index cb7f4d0..b61c695 100644
--- a/src/shared/mocks/sampleData.ts
+++ b/src/shared/mocks/sampleData.ts
@@ -35,16 +35,6 @@ import type {
   CampaignSummary,
   JourneyStage,
 } from '@/features/dashboard/types/intelligence';
-import type {
-  ConversionReport,
-  FootfallReport,
-  ReportBucket,
-} from '@/features/dashboard/types/reports';
-import type {
-  ActivityRow,
-  Campaign,
-  Journey,
-} from '@/features/engagement/types/engagement';
 import type {
   Reward,
   RewardStatus,
@@ -67,8 +57,6 @@ import type {LoginAuditItem} from '@/features/settings/components/SecurityManage
 import type {
   RangeKey,
 } from '@/shared/types/api';
-import type {Sale} from '@/features/commerce/types/sale';
-import {DEFAULT_TZ, shiftDay, shopToday, toReportWindow} from '@/services/api/range';
 
 // ===========================================================================
 // Seeded randomness
@@ -1343,236 +1331,6 @@ export function buildAttendance(
   });
 }
 
-// ===========================================================================
-// Dashboard charts — empty-shop fallback reports
-// (was features/dashboard/mocks/dashboardMock.ts)
-// ===========================================================================
-
-/**
- * TEMPORARY sample data for the dashboard charts.
- *
- * ── Why this exists ──────────────────────────────────────────────────────
- * A new merchant's reports come back empty or near-empty, and an empty axis
- * teaches nothing about what the panel is for. Until the platform has history
- * for a shop, each chart falls back to this sample and wears a "Sample data"
- * token so it can never be mistaken for the merchant's own numbers.
- *
- * ── Rules ────────────────────────────────────────────────────────────────
- * - Real data always wins — see `shared/mocks/withSample.ts`.
- * - The KPI row never uses this — a headline number must be real or absent.
- * - Values are deterministic (no Math.random) so SSR and hydration agree.
- *
- * ── Removing it ──────────────────────────────────────────────────────────
- * See `shared/mocks/withSample.ts` — one procedure for every mock folder.
- */
-
-
-/** A smooth, repeatable wave: weekly rhythm plus a gentle upward drift. */
-function wave(i: number, base: number, amp: number): number {
-  const weekly = Math.sin((i / 7) * Math.PI * 2 - 1.2);
-  const drift = i * 0.012;
-  const ripple = Math.sin(i * 1.7) * 0.18;
-  return Math.max(0, Math.round(base * (1 + drift) + amp * (weekly + ripple)));
-}
-
-function dayBuckets(days: number): ReportBucket[] {
-  // Fixed anchor so the labels are stable across renders and runtimes.
-  const start = Date.UTC(2026, 7, 27);
-  return Array.from({length: days}, (_, i) => {
-    const d = new Date(start + i * 86_400_000);
-    const visitors = wave(i, 140, 42);
-    const newVisitors = Math.round(visitors * (0.38 + 0.06 * Math.sin(i / 3)));
-    const purchases = Math.round(visitors * (0.22 + 0.04 * Math.sin(i / 4 + 1)));
-    const revenue = purchases * (620 + Math.round(90 * Math.sin(i / 5)));
-    return {
-      // Same shape as the platform's day buckets: a bare local date.
-      label: d.toISOString().slice(0, 10),
-      visitors,
-      newVisitors,
-      returningVisitors: visitors - newVisitors,
-      purchases,
-      revenue,
-      conversion: Number(((purchases / visitors) * 100).toFixed(1)),
-    };
-  });
-}
-
-function weekBuckets(days: ReportBucket[]): ReportBucket[] {
-  const weeks: ReportBucket[] = [];
-  for (let i = 0; i < days.length; i += 7) {
-    const slice = days.slice(i, i + 7);
-    const sum = (k: keyof ReportBucket) =>
-      slice.reduce((acc, b) => acc + (b[k] as number), 0);
-    const visitors = sum('visitors');
-    const purchases = sum('purchases');
-    weeks.push({
-      label: `W${Math.floor(i / 7) + 1}`,
-      visitors,
-      newVisitors: sum('newVisitors'),
-      returningVisitors: sum('returningVisitors'),
-      purchases,
-      revenue: sum('revenue'),
-      conversion: Number(((purchases / visitors) * 100).toFixed(1)),
-    });
-  }
-  return weeks;
-}
-
-const DAYS = dayBuckets(30);
-const WEEKS = weekBuckets(DAYS);
-
-function footfallFrom(buckets: ReportBucket[]): FootfallReport {
-  const visits = buckets.reduce((a, b) => a + b.visitors, 0);
-  const newVisitors = buckets.reduce((a, b) => a + b.newVisitors, 0);
-  // Unique people < visit events: regulars come more than once.
-  const total = Math.round(visits * 0.46);
-  return {
-    total,
-    newVisitors,
-    returningVisitors: Math.max(0, Math.round(total * 0.9) - newVisitors),
-    visits,
-    buckets,
-    timezone: null,
-    previousTotal: Math.round(total * 0.88),
-  };
-}
-
-function conversionFrom(buckets: ReportBucket[], total: number): ConversionReport {
-  const purchases = buckets.reduce((a, b) => a + b.purchases, 0);
-  const revenue = buckets.reduce((a, b) => a + b.revenue, 0);
-  return {
-    purchases,
-    revenue,
-    conversionPct: Number(((purchases / total) * 100).toFixed(1)),
-    basketSize: Math.round(revenue / purchases),
-    buckets,
-    timezone: null,
-    previousPurchases: Math.round(purchases * 0.91),
-    previousRevenue: Math.round(revenue * 0.86),
-  };
-}
-
-export const MOCK_FOOTFALL_DAILY = footfallFrom(DAYS);
-export const MOCK_FOOTFALL_WEEKLY = footfallFrom(WEEKS);
-export const MOCK_CONVERSION_DAILY = conversionFrom(DAYS, MOCK_FOOTFALL_DAILY.total);
-export const MOCK_CONVERSION_WEEKLY = conversionFrom(WEEKS, MOCK_FOOTFALL_WEEKLY.total);
-
-
-// ===========================================================================
-// Engagement — empty-shop fallback activities, campaigns, journey
-// (was features/engagement/mocks/engagementMock.ts)
-// ===========================================================================
-
-/**
- * TEMPORARY sample data for the engagement panels (activities, campaigns,
- * journey), shown only while the platform returns none for this shop.
- *
- * Attribution stays `'estimated'` on every row, so the AttributionNote still
- * renders — sample data obeys the same disclosure rule as real data.
- *
- * Removal: see `shared/mocks/withSample.ts`.
- */
-
-
-export const MOCK_ACTIVITIES: ActivityRow[] = [
-  {
-    id: 'sample-selfie',
-    kind: 'selfie',
-    name: 'Selfie wall',
-    isActive: true,
-    events: 412,
-    participants: 318,
-    anonymous: 24,
-    repeatVisitors: 142,
-    purchases: 96,
-    attributedRevenue: 61_400,
-    currency: 'INR',
-    attribution: 'estimated',
-  },
-  {
-    id: 'sample-spin',
-    kind: 'spin',
-    name: 'Spin the wheel',
-    isActive: true,
-    events: 286,
-    participants: 231,
-    anonymous: 12,
-    repeatVisitors: 118,
-    purchases: 74,
-    attributedRevenue: 44_900,
-    currency: 'INR',
-    attribution: 'estimated',
-  },
-  {
-    id: 'sample-challenge',
-    kind: 'challenge',
-    name: 'Weekend challenge',
-    isActive: true,
-    events: 138,
-    participants: 102,
-    anonymous: 0,
-    repeatVisitors: 61,
-    purchases: 38,
-    attributedRevenue: 27_300,
-    currency: 'INR',
-    attribution: 'estimated',
-  },
-  {
-    id: 'sample-referral',
-    kind: 'referral',
-    name: 'Refer a friend',
-    isActive: false,
-    events: 54,
-    participants: 47,
-    anonymous: 0,
-    repeatVisitors: 29,
-    purchases: 18,
-    attributedRevenue: 12_800,
-    currency: 'INR',
-    attribution: 'estimated',
-  },
-];
-
-export const MOCK_CAMPAIGNS: Campaign[] = [
-  {
-    id: 'sample-festive',
-    name: 'Festive week',
-    startsAt: '2026-09-15T00:00:00Z',
-    endsAt: null,
-    isActive: true,
-    activities: ['selfie', 'spin'],
-    events: 520,
-    participants: 388,
-    purchasers: 131,
-    attributedRevenue: 82_600,
-    attribution: 'estimated',
-  },
-  {
-    id: 'sample-monsoon',
-    name: 'Monsoon rewards',
-    startsAt: '2026-08-28T00:00:00Z',
-    endsAt: '2026-09-10T00:00:00Z',
-    isActive: false,
-    activities: ['challenge'],
-    events: 214,
-    participants: 163,
-    purchasers: 57,
-    attributedRevenue: 34_100,
-    attribution: 'estimated',
-  },
-];
-
-export const MOCK_JOURNEY: Journey = {
-  stages: [
-    {id: 'visit', label: 'Visited', customers: 1_240},
-    {id: 'engage', label: 'Took part', customers: 562},
-    {id: 'buy', label: 'Bought', customers: 298},
-    {id: 'return', label: 'Came back', customers: 211},
-    {id: 'refer', label: 'Referred', customers: 47},
-  ],
-  attribution: 'estimated',
-};
-
 // ===========================================================================
 // Commerce — what the sales resource does not carry
 // ===========================================================================
@@ -1595,79 +1353,6 @@ export const SAMPLE_PAYMENT_MIX: {method: string; pct: number}[] = [
 export const SAMPLE_DISCOUNT_RATE = 0.042;
 export const SAMPLE_REFUND_RATE = 0.022;
 
-/**
- * Example sale list for a shop that has recorded no sales in the window —
- * the Commerce page's cards, trend charts and outlet ranking all derive from
- * it, exactly as they would from GET /api/sales.
- *
- * Sales are spread across the stores the merchant really has (so Top
- * performing outlets shows their own shop names), weighted to a lunch and an
- * evening peak, and never placed after `serverNow` — Today stops at this hour.
- */
-export function buildSampleSales({
-  siteIds,
-  range,
-  custom,
-  serverNow,
-}: {
-  /** The real store ids in scope; the fixture roster when there are none. */
-  siteIds: string[];
-  range: RangeKey;
-  custom: {from: string; to: string} | null;
-  serverNow: string;
-}): Sale[] {
-  const sites = siteIds.length ? siteIds : STORE_SEED.map((s) => s.id);
-  const now = new Date(serverNow);
-  const today = shopToday(now);
-  const nowHour = Number(
-    new Intl.DateTimeFormat('en-GB', {
-      timeZone: DEFAULT_TZ,
-      hour: '2-digit',
-      hourCycle: 'h23',
-    }).format(now),
-  );
-  const {from, to} = toReportWindow(range, now, undefined, custom);
-  // Opening hours, weighted: a lunch and an evening rush.
-  const HOURS = [10, 11, 12, 12, 13, 13, 14, 15, 16, 17, 18, 18, 19, 19, 20, 21];
-  const CUSTOMERS = ['Priya S.', 'Rahul M.', 'Ananya K.', 'Vikram R.', 'Meera N.', 'Arjun P.', 'Kavya D.', 'Rohan T.'];
-  const STAFF = ['Divya', 'Karthik', 'Sneha', 'Imran', 'Lakshmi'];
-  const out: Sale[] = [];
-
-  for (let day = from; day <= to; day = shiftDay(day, 1)) {
-    sites.forEach((siteId, i) => {
-      const rng = createRng('commerce-sales', siteId, day);
-      // First store busiest, the rest tapering — a ranking worth reading.
-      const weight = Math.max(0.45, 1 - i * 0.18);
-      const count = Math.round(rng.int(6, 14) * weight);
-      for (let n = 0; n < count; n++) {
-        const hour = rng.pick(HOURS);
-        if (day === today && hour > nowHour) continue;
-        const minute = rng.int(0, 59);
-        const purchasedLines = rng.int(1, 4);
-        const repeat = rng.next() < 0.7;
-        const c = rng.int(0, CUSTOMERS.length - 1);
-        out.push({
-          id: `sample-${siteId}-${day}-${n}`,
-          invoiceNo: `INV-${day.replaceAll('-', '').slice(2)}-${String(i * 100 + n).padStart(3, '0')}`,
-          siteId,
-          customerRef: repeat ? `sample-cust-${siteId}-${c}` : null,
-          customerLabel: repeat ? CUSTOMERS[c] : null,
-          staffName: rng.pick(STAFF),
-          // ₹180–₹2,400 per bill, in integer paise.
-          totalPaise: rng.int(180, 2400) * 100,
-          currency: 'INR',
-          status: rng.next() < 0.03 ? 'void' : 'completed',
-          at: `${day}T${String(hour).padStart(2, '0')}:${String(minute).padStart(2, '0')}:00+05:30`,
-          purchasedLines,
-          enquiryLines: rng.next() < 0.35 ? rng.int(1, 2) : 0,
-          lines: [],
-        });
-      }
-    });
-  }
-  return out;
-}
-
 export type SampleStockStatus = 'in_stock' | 'low_stock' | 'out_of_stock';
 
 export interface SampleProduct extends Record<string, unknown> {
diff --git a/src/shared/mocks/withSample.ts b/src/shared/mocks/withSample.ts
index 23d1184..cc07473 100644
--- a/src/shared/mocks/withSample.ts
+++ b/src/shared/mocks/withSample.ts
@@ -1,47 +1,25 @@
 'use client';
 
 /**
- * TEMPORARY — the two ways a page reads sample data.
+ * TEMPORARY — how a page reads sample data.
  *
- *   withSample()        real endpoint first; the sample stands in only when the
- *                       platform answered with NO signal (a brand-new shop).
  *   useSampleResource() no endpoint exists at all; the sample IS the data, and
  *                       the panel sits inside a <SampleScope>.
  *
+ * A section that HAS a real endpoint never falls back to sample data: an
+ * empty response renders the panel's empty state.
+ *
  * Every sample value comes from shared/mocks/sampleData.ts — the single file
  * to edit, and eventually delete.
  *
  * ── Removing sample data ─────────────────────────────────────────────────
  * Delete this folder, then fix the call sites TypeScript points at:
- * `withSample(x, …)` → `x`, `useSampleResource(…)` → the real hook, and drop
+ * `useSampleResource(…)` → the real hook, and drop
  * each <SampleTag/>, <SampleScope> and <SampleNotice>.
  */
 
 import {useMemo} from 'react';
 import type {Resource} from '@/shared/hooks/useResource';
-import type {ReportBucket} from '@/features/dashboard/types/reports';
-
-export type SampleAware<T> = Resource<T> & {isSample: boolean};
-
-export function withSample<T>(
-  resource: Resource<T>,
-  sample: T,
-  isUsable: (data: T | undefined) => boolean,
-): SampleAware<T> {
-  const settled = resource.status === 'success' || resource.status === 'empty';
-  if (settled && !isUsable(resource.data)) {
-    return {...resource, status: 'success', data: sample, error: undefined, isSample: true};
-  }
-  return {...resource, isSample: false};
-}
-
-/** True when the report carries at least one non-zero value for `key`. */
-export function hasSignal(
-  report: {buckets: ReportBucket[]} | undefined,
-  key: keyof Omit<ReportBucket, 'label'>,
-): boolean {
-  return !!report && report.buckets.some((b) => b[key] > 0);
-}
 
 const DAY_MS = 86_400_000;
 
diff --git a/src/shared/services/bff.ts b/src/shared/services/bff.ts
index 78f29b8..0184112 100644
--- a/src/shared/services/bff.ts
+++ b/src/shared/services/bff.ts
@@ -81,6 +81,17 @@ export function failureFrom(err: unknown): UpstreamFailure {
         reason: 'not_supported',
       };
     }
+    // Checked before the generic 404 below: a route the deployed platform
+    // does not have yet is a version gap, not a missing record, and a panel
+    // must not tell somebody their data is gone when the server is just old.
+    if (err.isRouteMissing) {
+      return {
+        status: 501,
+        code: 'not_deployed',
+        message: 'This needs a newer platform version than the one running.',
+        reason: 'not_deployed',
+      };
+    }
     // A 404 is also what another tenant's data returns, always — so it must
     // never be phrased as "deleted".
     return {
diff --git a/src/shared/types/api.ts b/src/shared/types/api.ts
index fdf41a7..d27958d 100644
--- a/src/shared/types/api.ts
+++ b/src/shared/types/api.ts
@@ -30,7 +30,10 @@ export type ApiErrorCode =
   | 'internal'
   | 'not_found'
   | 'bad_request'
-  | 'unauthorized';
+  | 'unauthorized'
+  /** The deployed platform is older than this console and has no route for
+   *  the request. Not a fault — render "not available yet", never red. */
+  | 'not_deployed';
 
 export interface ApiFailure {
   error: {code: ApiErrorCode; message: string};