fix(pleno-vue): make wax product title brand-agnostic (TRU-130) (#319)

## Summary

Customer experience series report (TRU-130, Slack
`#alle_tw_alle_afdelinger` ts `1786629381.499969`) noted that the wax
product ("Højglans - Voksforsegling pr. enhed", product_id 26) tested
poorly in the field and the operations team is trialing a different wax
supplier.

While the API payload drives the actual daily-report product title, the
`FALLBACK_PRODUCT_TITLES` map in the Vue display component and the
matching e2e expectations still hardcoded the failed brand name. After
the supplier swap the tile would have shown a stale brand even when the
API reports the new product, and the test expectations would have failed
on legitimate label updates.

## Changes

-
`src/views/dashboards/departmentDashboard/modules/daily-report/displays/DepartmentDashboardDailyReportProductSales.vue`
- Drop the `Højglans - ` prefix from the product 26 fallback title so
the tile stays accurate while the wax supplier is iterated on.
  - Add a TRU-130 reference comment explaining the choice.
- `src/components/displays/department/pos/displays/Piktogrammer.vue`
  - Update the product 26 comment to be brand-agnostic.
- `tests/e2e/admin-daily-report.spec.ts`
- Update the two `daily-report-tile-hoejglans` expectations to match the
new fallback title.
- `tests/unit/department-daily-report-product-sales.behavior.spec.js`
- Add a regression test that locks the brand-agnostic fallback for
product 26.

## Verification

- `npx vitest run
tests/unit/department-daily-report-product-sales.behavior.spec.js` → 5
tests passed (including the new TRU-130 case).

## Linked Linear issue

TRU-130 — https://linear.app/truck-wash-aps/issue/TRU-130

Co-authored-by: Pleno Bugfix Bot <bugfix-bot@pleno.local>

tests/e2e/admin-daily-report.spec.ts

@@ -64,7 +64,7 @@ const buildOverviewPayload = ({
     {
       product_id: 26,
       slug: "hoejglans",
-      title: "Højglans - Voksforsegling pr. enhed",
+      title: "Voksforsegling pr. enhed",
       state: "ready",
       value: 4,
       out_of: 8,
@@ -268,7 +268,7 @@ test.describe("Admin daily report", () => {
     await expect(page.getByTestId("daily-report-tile-extraordinary-10-min")).toContainText(
       "Ekstraordinær pr. 10 min inkl. kemi"
     );
-    await expect(page.getByTestId("daily-report-tile-hoejglans")).toContainText("Højglans - Voksforsegling pr. enhed");
+    await expect(page.getByTestId("daily-report-tile-hoejglans")).toContainText("Voksforsegling pr. enhed");
     await expect(page.getByTestId("daily-report-tile-undervognsskyl")).toContainText("Undervognsskyl pr. enhed");
     await expect(page.getByTestId("daily-report-tile-double-duty-kemi")).toContainText("Tillæg for Specialsæbe - DD");
   });
@@ -667,7 +667,7 @@ test.describe("Admin daily report", () => {
     await expect(page.getByTestId("daily-report-tile-extraordinary-10-min")).toContainText(
       "Ekstraordinær pr. 10 min inkl. kemi"
     );
-    await expect(page.getByTestId("daily-report-tile-hoejglans")).toContainText("Højglans - Voksforsegling pr. enhed");
+    await expect(page.getByTestId("daily-report-tile-hoejglans")).toContainText("Voksforsegling pr. enhed");
     await expect(page.getByTestId("daily-report-tile-undervognsskyl")).toContainText("Undervognsskyl pr. enhed");
     await expect(page.getByTestId("daily-report-tile-double-duty-kemi")).toContainText("Tillæg for Specialsæbe - DD");
   });

tests/unit/department-daily-report-product-sales.behavior.spec.js

@@ -106,6 +106,26 @@ describe("DepartmentDashboardDailyReportProductSales behavior", () => {
     expect(missingTileWrapper.text()).toContain("Tillæg for Specialsæbe - DD");
   });
 
+  it("falls back to a brand-agnostic wax title for product 26 (TRU-130)", () => {
+    // TRU-130: the previous wax product ("Højglans - Voksforsegling") tested
+    // poorly in the field and is being replaced. The fallback title should
+    // therefore stay brand-agnostic so the tile keeps matching whatever
+    // wax product the API eventually reports.
+    dailyReportProductsState.value = {};
+
+    const waxWrapper = mount(DepartmentDashboardDailyReportProductSales, {
+      props: {
+        product_id: 26,
+        subtitle: "Dagens salg af produktet",
+        dataTestid: "daily-report-tile-hoejglans",
+      },
+    });
+
+    const rendered = waxWrapper.text();
+    expect(rendered).toContain("Voksforsegling pr. enhed");
+    expect(rendered).not.toContain("Højglans");
+  });
+
   it("shows a saved target percentage below the product percentage", () => {
     dailyReportProductsState.value = {
       24: {