diff --git a/frontend/src/v2/__tests__/v2-phone-shell.test.ts b/frontend/src/v2/__tests__/v2-phone-shell.test.ts
index 625d9756e..390f6fd50 100644
--- a/frontend/src/v2/__tests__/v2-phone-shell.test.ts
+++ b/frontend/src/v2/__tests__/v2-phone-shell.test.ts
@@ -38,6 +38,21 @@ describe('D223 phone shell', () => {
     expect(css.indexOf('.v2-feature__body {')).toBeLessThan(at);
   });
 
+  test('agent settings and memory pages get the same 52px bar inside the 760px query', () => {
+    const agentCss = fs.readFileSync(path.join(__dirname, '../agents/v2-agent-settings.css'), 'utf8');
+    const tail = agentCss.slice(agentCss.indexOf('D223 (TASK-730)'));
+    expect(tail).toMatch(/\.v2-agent-settings > \.v2-page-head,\s*\.v2-agent-settings > \.v2-agent-memory__head\s*\{[^}]*min-height:\s*52px/);
+    const at = agentCss.indexOf('D223 (TASK-730)');
+    expect(agentCss.slice(0, at).lastIndexOf('@media')).toBe(agentCss.lastIndexOf('@media (max-width: 760px)', at));
+  });
+
+  test('the memory bar lets the name shrink and drops the tab nav margin so it stays 52px', () => {
+    const agentCss = fs.readFileSync(path.join(__dirname, '../agents/v2-agent-settings.css'), 'utf8');
+    const tail = agentCss.slice(agentCss.indexOf('D223 (TASK-730)'));
+    expect(tail).toMatch(/__ident\s*\{\s*min-width:\s*0/);
+    expect(tail).toMatch(/__seg\s*\{[^}]*margin-top:\s*0/);
+  });
+
   test('the settings head spans the pane and only the body scrolls', () => {
     expect(phone).toMatch(/\.v2-feature--settings > \.v2-feature__body\s*\{[^}]*padding:\s*0/);
     expect(phone).toMatch(/\.v2-feature--settings \.v2-feature__legacy\s*\{[^}]*max-width:\s*none/);
diff --git a/frontend/src/v2/agents/v2-agent-settings.css b/frontend/src/v2/agents/v2-agent-settings.css
index 915aa1c04..bfef93134 100644
--- a/frontend/src/v2/agents/v2-agent-settings.css
+++ b/frontend/src/v2/agents/v2-agent-settings.css
@@ -130,6 +130,21 @@
   .v2-agent-settings { padding: 16px; }
   .v2-agent-settings__section-head { flex-direction: column; align-items: flex-start; }
   .v2-agent-settings__key-meta { display: grid; gap: 4px; }
+  /* D223 (TASK-730): the same 52px phone top bar feature pages get from
+     .v2-feature__header. The page pads 16px, so the bar bleeds out of it. */
+  .v2-agent-settings > .v2-page-head,
+  .v2-agent-settings > .v2-agent-memory__head {
+    display: flex; align-items: center; flex-wrap: nowrap; gap: 8px; min-height: 52px;
+    margin: -16px -16px 12px; padding: 0 10px 0 12px;
+    border-bottom: 1px solid var(--v2-border-soft);
+  }
+  .v2-agent-settings > .v2-page-head h1,
+  .v2-agent-settings > .v2-agent-memory__head .v2-agent-memory__ident { min-width: 0; }
+  .v2-agent-settings > .v2-agent-memory__head .v2-agent-memory__seg { flex: none; margin-top: 0; }
+  .v2-agent-settings > .v2-agent-memory__head .v2-agent-memory__ident h1 {
+    margin: 0; font: 800 21px/1 var(--v2-font-display); letter-spacing: -0.03em;
+    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
+  }
 }
 
 /* Agent memory tab (TASK-690 slice 1): frame metrics from docs/design/artboards/d215
diff --git a/frontend/src/v2/v2.css b/frontend/src/v2/v2.css
index 4cb83e1d5..4dec889f8 100644
--- a/frontend/src/v2/v2.css
+++ b/frontend/src/v2/v2.css
@@ -10879,6 +10879,8 @@ details[open] > .v2-settings__summary > .v2-settings__icon:last-child { transfor
 .v2-root:lang(zh) .v2-login__title,
 .v2-root:lang(zh) .v2-feature__title,
 .v2-root:lang(zh) .v2-feature__header .v2-feature__title,
+.v2-root:lang(zh) .v2-agent-settings > .v2-page-head h1,
+.v2-root:lang(zh) .v2-agent-settings > .v2-agent-memory__head .v2-agent-memory__ident h1,
 .v2-root:lang(zh) .v2-settings__label,
 .v2-root:lang(zh) .v2-settings__account-name,
 .v2-root:lang(zh) .v2-settings__section .v2-billing__title,