fix: preserve map area accessible names

frontend/src/components/maps/LocationMapCanvas.jsx

@@ -8,6 +8,12 @@ import {
 const DRAG_CHANGE_THRESHOLD = 2;
 const NUDGE_KEYS = new Set(["ArrowUp", "ArrowRight", "ArrowDown", "ArrowLeft"]);
 
+function mapObjectDisplayLabel(object, fallback) {
+  const label = String(object.label || "").trim();
+  const zoneName = String(object.zone_name || "").trim();
+  return label || zoneName || fallback;
+}
+
 export default function LocationMapCanvas({
   mode,
   editorTool,
@@ -212,7 +218,7 @@ export default function LocationMapCanvas({
   };
 
   const fittedLabelLines = (object, fallback) => {
-    const rawLabel = String(object.label || object.zone_name || fallback).trim();
+    const rawLabel = mapObjectDisplayLabel(object, fallback);
     const maxCharacters = Math.max(8, Math.floor((Number(object.width) - 28) / 13));
     const canUseTwoLines = Number(object.height) >= 92 && rawLabel.length > maxCharacters;
     if (!canUseTwoLines) return [truncateLabel(rawLabel, maxCharacters)];
@@ -295,7 +301,7 @@ export default function LocationMapCanvas({
           height={object.height}
           rx="12"
           role="button"
-          aria-label={`Map area ${object.label || index + 1}`}
+          aria-label={`Map area ${mapObjectDisplayLabel(object, index + 1)}`}
           aria-pressed={isSelected}
           tabIndex={mode === "view" || canEditObjects ? 0 : -1}
           onPointerDown={(event) => startDrag(event, object, "move")}

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

@@ -596,6 +596,47 @@ test("admin selecting an object does not mark a draft dirty until it changes", a
   await expect(page.getByRole("button", { name: "Undo" })).toBeEnabled();
 });
 
+test("admin cleared map area labels keep linked zone accessible names", async ({ page }) => {
+  await mockMapShell(page);
+
+  const mapState = draftMapState([
+    {
+      id: 1353,
+      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 Objects" }).click();
+  await page.getByRole("button", { name: "Map area Bakery" }).click();
+  await page.getByRole("textbox", { name: "Label" }).fill("");
+
+  await expect(page.getByRole("button", { name: "Map area Bakery", exact: true })).toBeVisible();
+  await expect(page.getByRole("button", { name: "Map area 1", exact: true })).toHaveCount(0);
+});
+
 test("admin nudges selected map areas with arrow keys", async ({ page }) => {
   await mockMapShell(page);