diff --git a/packages/dashboard/app/__tests__/browser-layout-smoke-fixture.test.ts b/packages/dashboard/app/__tests__/browser-layout-smoke-fixture.test.ts
index 571bbaf648..6d727a6623 100644
--- a/packages/dashboard/app/__tests__/browser-layout-smoke-fixture.test.ts
+++ b/packages/dashboard/app/__tests__/browser-layout-smoke-fixture.test.ts
@@ -84,4 +84,15 @@ describe("browser layout smoke fixture", () => {
       expect(html).toContain(label);
     }
   });
+
+  /*
+  FNXC:ListView 2026-08-03-07:00:
+  The mobile List smoke fixture must carry the production list-view--single-pane marker without coupling the regression to HTML attribute order or spacing.
+  */
+  it("marks the mobile List fixture as the production single-pane surface", () => {
+    const html = createSmokeHtml();
+    const listSectionTag = html.match(/<section\b[^>]*\bdata-smoke="list"[^>]*>/)?.[0];
+    expect(listSectionTag).toBeDefined();
+    expect(listSectionTag).toMatch(/\bclass="[^"]*\blist-view--single-pane\b[^"]*"/);
+  });
 });
diff --git a/packages/dashboard/scripts/browser-layout-smoke.mjs b/packages/dashboard/scripts/browser-layout-smoke.mjs
index f836ce14d3..6646ca001a 100644
--- a/packages/dashboard/scripts/browser-layout-smoke.mjs
+++ b/packages/dashboard/scripts/browser-layout-smoke.mjs
@@ -379,7 +379,8 @@ export function createSmokeHtml() {
 
       <main class="project-content project-content--with-footer project-content--with-mobile-nav">
         <section class="board" data-smoke="board">${columnMarkup}</section>
-        <section class="list-view" data-smoke="list" hidden>
+        <!-- FNXC:ListView 2026-08-03-06:41: Mirror ListView's measured single-pane marker so the native mobile smoke exercises the production CSS selector introduced by FN-8754 instead of showing both the table and cards. -->
+        <section class="list-view list-view--single-pane" data-smoke="list" hidden>
           <div class="list-create-area">
             <div class="quick-entry-box quick-entry-box--collapsed" data-testid="quick-entry-box">
               <div class="quick-entry-main-row">