diff --git a/docs/superpowers/plans/2026-07-05-dashboard-overlay-tabs-phase-3.md b/docs/superpowers/plans/2026-07-05-dashboard-overlay-tabs-phase-3.md
index f970d39..1a86bbf 100644
--- a/docs/superpowers/plans/2026-07-05-dashboard-overlay-tabs-phase-3.md
+++ b/docs/superpowers/plans/2026-07-05-dashboard-overlay-tabs-phase-3.md
@@ -72,6 +72,7 @@ export const UI_STRINGS = {
 ```
 
 The resulting footer strings are:
+
 - `statistics`: `[Tab/Shift-Tab] Switch tab • [Left/Right] Period • [Up/Down] Row • [Enter] Expand • [q/Esc] Close`
 - `current`: `[Tab/Shift-Tab] Switch tab • [Left/Right] Provider • [q/Esc] Close`
 - `insights`: `[Tab/Shift-Tab] Switch tab • [Left/Right] Period • [q/Esc] Close`
diff --git a/src/shared/constants.ts b/src/shared/constants.ts
index 8de9377..fbb4b10 100644
--- a/src/shared/constants.ts
+++ b/src/shared/constants.ts
@@ -46,6 +46,27 @@ export const PERIOD_ORDER: UsageWindow[] = [
 
 export const UI_STRINGS = {
   dashboardTitle: "Pi Usage Dashboard",
+  // New per-tab footers (used by the tabbed overlay starting Phase 4)
+  dashboardFooters: {
+    statistics: [
+      "[Tab/Shift-Tab] Switch tab",
+      "[Left/Right] Period",
+      "[Up/Down] Row",
+      "[Enter] Expand",
+      "[q/Esc] Close",
+    ].join(" • "),
+    current: [
+      "[Tab/Shift-Tab] Switch tab",
+      "[Left/Right] Provider",
+      "[q/Esc] Close",
+    ].join(" • "),
+    insights: [
+      "[Tab/Shift-Tab] Switch tab",
+      "[Left/Right] Period",
+      "[q/Esc] Close",
+    ].join(" • "),
+  },
+  // Legacy -- removed in Phase 5 when dashboard.ts stops referencing them
   dashboardFooter: [
     "[Tab/Shift-Tab] Provider",
     "[Left/Right] Period",
diff --git a/tests/constants.test.ts b/tests/constants.test.ts
new file mode 100644
index 0000000..2c57b9a
--- /dev/null
+++ b/tests/constants.test.ts
@@ -0,0 +1,22 @@
+import { describe, expect, it } from "vitest";
+import { UI_STRINGS } from "../src/shared/constants.ts";
+
+describe("UI_STRINGS.dashboardFooters", () => {
+  it("statistics footer matches expected format", () => {
+    expect(UI_STRINGS.dashboardFooters.statistics).toBe(
+      "[Tab/Shift-Tab] Switch tab \u2022 [Left/Right] Period \u2022 [Up/Down] Row \u2022 [Enter] Expand \u2022 [q/Esc] Close",
+    );
+  });
+
+  it("current footer matches expected format", () => {
+    expect(UI_STRINGS.dashboardFooters.current).toBe(
+      "[Tab/Shift-Tab] Switch tab \u2022 [Left/Right] Provider \u2022 [q/Esc] Close",
+    );
+  });
+
+  it("insights footer matches expected format", () => {
+    expect(UI_STRINGS.dashboardFooters.insights).toBe(
+      "[Tab/Shift-Tab] Switch tab \u2022 [Left/Right] Period \u2022 [q/Esc] Close",
+    );
+  });
+});