diff --git a/docs/AGENTS.md b/docs/AGENTS.md
index cec4e34e88..4ce4678015 100644
--- a/docs/AGENTS.md
+++ b/docs/AGENTS.md
@@ -132,6 +132,7 @@ Mobile app tests live in `mobile/src/**/*.test.ts` and use Bun's built-in test r
 - If a tool/agent provides an emoji string (e.g., todo-derived status or `displayStatus`), render via `EmojiIcon` (`src/browser/components/icons/EmojiIcon.tsx`) instead of rendering the emoji.
 - If a new emoji appears in tool output, extend `EmojiIcon` to map it to an SVG icon.
 - Colors defined in `src/browser/styles/globals.css` (`:root @theme` block). Reference via CSS variables (e.g., `var(--color-plan-mode)`), never hardcode hex values.
+- Tooltips must use the shared `Tooltip`/`TooltipIfPresent` components, not native `title` attributes. Native titles create duplicate OS tooltips and cannot be z-indexed; shared tooltips portal above clipped containers.
 - For incrementing numeric UI (costs, timers, token counts, percentages), use semantic numeric typography utilities (`counter-nums` / `counter-nums-mono`) to prevent width jitter.
 - Choose `counter-nums-mono` only when monospace is an intentional visual style (e.g., terminal/telemetry), not merely as a workaround.
 - Use `min-w-[Nch]` only when reserving layout width is intentional and separate from tabular numeral stability.
diff --git a/src/browser/features/Memory/MemoryBrowser.tsx b/src/browser/features/Memory/MemoryBrowser.tsx
index 094ecd12f7..e85aa56bf3 100644
--- a/src/browser/features/Memory/MemoryBrowser.tsx
+++ b/src/browser/features/Memory/MemoryBrowser.tsx
@@ -11,6 +11,7 @@ import {
 } from "lucide-react";
 
 import { ConfirmationModal } from "@/browser/components/ConfirmationModal/ConfirmationModal";
+import { TooltipIfPresent } from "@/browser/components/Tooltip/Tooltip";
 import { useAPI } from "@/browser/contexts/API";
 import { RowActionButton } from "@/browser/features/RightSidebar/GoalBoardSections";
 import { isAbortError } from "@/browser/utils/isAbortError";
@@ -555,16 +556,25 @@ function ConsolidationFooter(props: {
 
   return (
     <div className="border-border-light flex items-center justify-between gap-2 border-t px-3 py-2 text-xs">
-      <div className="text-muted min-w-0 flex-1 space-y-0.5" title={summaryTitle}>
-        <div className="counter-nums truncate">
-          Workspace: {formatConsolidationRecord(status?.workspaceRecord ?? null)}
-        </div>
-        <div className="counter-nums truncate">Project: {projectLabel}</div>
-        <div className="counter-nums truncate">
-          Global: {formatConsolidationRecord(status?.globalRecord ?? null)}
+      <TooltipIfPresent
+        tooltip={
+          summaryTitle === "" ? null : <div className="whitespace-pre-line">{summaryTitle}</div>
+        }
+        side="top"
+        align="start"
+      >
+        {/* Use the shared, portaled tooltip only: a native title duplicates the UI tooltip and ignores z-index. */}
+        <div className="text-muted min-w-0 flex-1 space-y-0.5">
+          <div className="counter-nums truncate">
+            Workspace: {formatConsolidationRecord(status?.workspaceRecord ?? null)}
+          </div>
+          <div className="counter-nums truncate">Project: {projectLabel}</div>
+          <div className="counter-nums truncate">
+            Global: {formatConsolidationRecord(status?.globalRecord ?? null)}
+          </div>
+          {runError !== null && <div className="text-error truncate">{runError}</div>}
         </div>
-        {runError !== null && <div className="text-error truncate">{runError}</div>}
-      </div>
+      </TooltipIfPresent>
       <button
         type="button"
         className="border-border-light text-foreground hover:bg-hover shrink-0 rounded border px-2 py-0.5 disabled:opacity-50"
diff --git a/src/browser/features/RightSidebar/Memory/MemoryTab.test.tsx b/src/browser/features/RightSidebar/Memory/MemoryTab.test.tsx
index 9fbfb64c63..de3e4a9895 100644
--- a/src/browser/features/RightSidebar/Memory/MemoryTab.test.tsx
+++ b/src/browser/features/RightSidebar/Memory/MemoryTab.test.tsx
@@ -268,6 +268,28 @@ describe("MemoryTab", () => {
     expect(getByText(/^Project:/).textContent).not.toContain("manual");
   });
 
+  test("consolidation summary does not leave a native title tooltip", async () => {
+    fake = createFakeMemoryApi([], {
+      consolidationStatus: {
+        workspaceRecord: {
+          ...DEFAULT_CONSOLIDATION_RECORD,
+          summary: "workspace summary",
+        },
+        projectRecord: null,
+        globalRecord: null,
+        projectAvailable: true,
+      },
+    });
+    const { findByText } = render(<MemoryTab workspaceId="ws-1" />);
+
+    const workspaceLine = await findByText(/^Workspace: .*manual/);
+    const statusBlock = workspaceLine.parentElement;
+    expect(statusBlock).not.toBeNull();
+    // Native title tooltips are rendered by the OS and appear in addition to our
+    // portaled app tooltip, so this block must not expose one.
+    expect(statusBlock!.getAttribute("title")).toBeNull();
+  });
+
   test("shows usage stats for used files and omits them for never-used files", async () => {
     fake = createFakeMemoryApi([
       fileInfo({
diff --git a/src/node/services/agentSkills/builtInSkillContent.generated.ts b/src/node/services/agentSkills/builtInSkillContent.generated.ts
index 9bcaa20932..36bec84d7b 100644
--- a/src/node/services/agentSkills/builtInSkillContent.generated.ts
+++ b/src/node/services/agentSkills/builtInSkillContent.generated.ts
@@ -334,6 +334,7 @@ export const BUILTIN_SKILL_FILES: Record<string, Record<string, string>> = {
       "- If a tool/agent provides an emoji string (e.g., todo-derived status or `displayStatus`), render via `EmojiIcon` (`src/browser/components/icons/EmojiIcon.tsx`) instead of rendering the emoji.",
       "- If a new emoji appears in tool output, extend `EmojiIcon` to map it to an SVG icon.",
       "- Colors defined in `src/browser/styles/globals.css` (`:root @theme` block). Reference via CSS variables (e.g., `var(--color-plan-mode)`), never hardcode hex values.",
+      "- Tooltips must use the shared `Tooltip`/`TooltipIfPresent` components, not native `title` attributes. Native titles create duplicate OS tooltips and cannot be z-indexed; shared tooltips portal above clipped containers.",
       "- For incrementing numeric UI (costs, timers, token counts, percentages), use semantic numeric typography utilities (`counter-nums` / `counter-nums-mono`) to prevent width jitter.",
       "- Choose `counter-nums-mono` only when monospace is an intentional visual style (e.g., terminal/telemetry), not merely as a workaround.",
       "- Use `min-w-[Nch]` only when reserving layout width is intentional and separate from tabular numeral stability.",