fix: guard unsaved map app navigation

frontend/src/pages/LocationMapManager.jsx

@@ -73,7 +73,7 @@ export default function LocationMapManager() {
   const [future, setFuture] = useState([]);
   const [dragState, setDragState] = useState(null);
   const [pendingDeleteObject, setPendingDeleteObject] = useState(null);
-  const [pendingLeave, setPendingLeave] = useState(false);
+  const [pendingLeaveTarget, setPendingLeaveTarget] = useState(null);
   const svgRef = useRef(null);
   const toastRef = useRef(toast);
   const loadRequestRef = useRef(0);
@@ -141,6 +141,45 @@ export default function LocationMapManager() {
     { capture: true }
   );
 
+  useEffect(() => {
+    if (!shouldGuardLeave) {
+      setPendingLeaveTarget(null);
+      return undefined;
+    }
+
+    const handleDocumentClick = (event) => {
+      if (
+        event.defaultPrevented ||
+        event.button !== 0 ||
+        event.altKey ||
+        event.ctrlKey ||
+        event.metaKey ||
+        event.shiftKey
+      ) {
+        return;
+      }
+
+      const target = event.target instanceof Element ? event.target : null;
+      const anchor = target?.closest("a[href]");
+      if (!anchor || (anchor.target && anchor.target !== "_self") || anchor.hasAttribute("download")) {
+        return;
+      }
+
+      const nextUrl = new URL(anchor.href, window.location.href);
+      if (nextUrl.origin !== window.location.origin) return;
+
+      const currentPath = `${window.location.pathname}${window.location.search}${window.location.hash}`;
+      const nextPath = `${nextUrl.pathname}${nextUrl.search}${nextUrl.hash}`;
+      if (nextPath === currentPath) return;
+
+      event.preventDefault();
+      setPendingLeaveTarget({ type: "path", path: nextPath });
+    };
+
+    document.addEventListener("click", handleDocumentClick, true);
+    return () => document.removeEventListener("click", handleDocumentClick, true);
+  }, [shouldGuardLeave]);
+
   const syncMapDraftFromState = useCallback((nextState, nextMode, nextPreviewDraft) => {
     const nextMap = mapForMode(nextState, nextMode, nextPreviewDraft);
     const nextObjects = objectsForMode(nextState, nextMode, nextPreviewDraft);
@@ -562,12 +601,22 @@ export default function LocationMapManager() {
 
   const handleBack = useCallback(() => {
     if (shouldGuardLeave) {
-      setPendingLeave(true);
+      setPendingLeaveTarget({ type: "back" });
       return;
     }
     performBackNavigation();
   }, [performBackNavigation, shouldGuardLeave]);
 
+  const confirmPendingLeave = useCallback(() => {
+    const target = pendingLeaveTarget;
+    setPendingLeaveTarget(null);
+    if (target?.type === "path" && target.path) {
+      navigate(target.path);
+      return;
+    }
+    performBackNavigation();
+  }, [navigate, pendingLeaveTarget, performBackNavigation]);
+
   if (!hasLoaded || householdLoading || loading) {
     return (
       <div className="location-map-page">
@@ -721,15 +770,12 @@ export default function LocationMapManager() {
         onConfirm={handleDeleteObject}
       />
       <ConfirmSlideModal
-        isOpen={pendingLeave}
+        isOpen={Boolean(pendingLeaveTarget)}
         title="Leave with unsaved changes?"
         description="Your draft edits are only on this screen right now. Save the draft before leaving if you want to keep them."
         confirmLabel="Leave Map"
-        onClose={() => setPendingLeave(false)}
-        onConfirm={() => {
-          setPendingLeave(false);
-          performBackNavigation();
-        }}
+        onClose={() => setPendingLeaveTarget(null)}
+        onConfirm={confirmPendingLeave}
       />
     </div>
   );

frontend/tests/location-map-manager.spec.ts

@@ -1453,6 +1453,55 @@ test("admin hard navigation warns when draft edits are unsaved", async ({ page }
   });
 });
 
+test("admin app navigation warns when draft edits are unsaved", async ({ page }) => {
+  await mockMapShell(page);
+
+  const mapState = draftMapState([
+    {
+      id: 1372,
+      location_map_id: 900,
+      zone_id: 501,
+      zone_name: "Bakery",
+      type: "zone",
+      label: "Bakery",
+      x: 40,
+      y: 40,
+      width: 260,
+      height: 160,
+      rotation: 0,
+      locked: false,
+      visible: true,
+      sort_order: 1,
+    },
+  ], true);
+
+  await page.route("**/households/1/locations/10/map", async (route) => {
+    await route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify(mapState),
+    });
+  });
+
+  await page.goto("/stores/100/locations/10/map");
+
+  await page.getByRole("button", { name: "Continue Editing" }).click();
+  await page.getByRole("button", { name: "Edit Areas" }).click();
+  await page.locator(".location-map-object", { hasText: "Bakery" }).locator("rect").first().click();
+  await page.getByRole("textbox", { name: "Label" }).fill("Unsaved Navbar Bakery");
+
+  await page.getByRole("link", { name: "Home" }).click();
+
+  await expect(page.getByRole("heading", { name: "Leave with unsaved changes?" })).toBeVisible();
+  await page.getByRole("button", { name: "Cancel" }).click();
+  await expect(page).toHaveURL(/\/stores\/100\/locations\/10\/map$/);
+  await expect(page.getByRole("textbox", { name: "Label" })).toHaveValue("Unsaved Navbar Bakery");
+
+  await page.getByRole("link", { name: "Home" }).click();
+  await confirmSlide(page);
+  await expect(page).toHaveURL(/\/$/);
+});
+
 test("admin publish saves pending map edits before publishing", async ({ page }) => {
   await mockMapShell(page);