Fix: register the filter_selection_data e2e stub after routeFromHAR, not before

Per Playwright's own docs, routeFromHAR's notFound: 'fallback' sends
unmatched requests straight to the network -- it does not chain to
other, earlier-registered page.route() handlers via route.fallback()
the way I'd assumed. Since Playwright checks routes in
reverse-registration order, a handler registered in beforeEach (i.e.
before the test body's routeFromHAR call) is checked AFTER routeFromHAR,
whose catch-all pattern intercepts everything first and sends any miss
straight to the (nonexistent, in e2e) network -- my stub never got a
chance to run. Confirmed by a second CI failure with the same "Failed
to fetch" symptom even after the CORS-header fix.

Moved the mockFilterSelectionData(page) call to immediately after each
test's own routeFromHAR(...) call instead, so it's registered later and
checked first for that specific URL, with routeFromHAR's broader
pattern still handling everything else as before.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src-ui/e2e/admin/settings.spec.ts

@@ -2,16 +2,13 @@ import { expect, test } from '@playwright/test'
 import path from 'node:path'
 import { mockFilterSelectionData } from '../mock-filter-selection-data'
 
-test.beforeEach(async ({ page }) => {
-  await mockFilterSelectionData(page)
-})
-
 const REQUESTS_HAR = path.join(__dirname, 'requests/api-settings.har')
 
 test('should activate / deactivate save button when settings change', async ({
   page,
 }) => {
   await page.routeFromHAR(REQUESTS_HAR, { notFound: 'fallback' })
+  await mockFilterSelectionData(page)
   await page.goto('/settings')
   await expect(page.getByRole('button', { name: 'Save' })).toBeDisabled()
   await page.getByLabel('Use system setting').click()
@@ -21,6 +18,7 @@ test('should activate / deactivate save button when settings change', async ({
 
 test('should warn on unsaved changes', async ({ page }) => {
   await page.routeFromHAR(REQUESTS_HAR, { notFound: 'fallback' })
+  await mockFilterSelectionData(page)
   await page.goto('/settings')
   await page.getByLabel('Use system setting').click()
   await page.getByRole('link', { name: 'Dashboard' }).click()
@@ -33,6 +31,7 @@ test('should warn on unsaved changes', async ({ page }) => {
 
 test('should apply appearance changes when set', async ({ page }) => {
   await page.routeFromHAR(REQUESTS_HAR, { notFound: 'fallback' })
+  await mockFilterSelectionData(page)
   await page.goto('/settings')
   await expect(page.locator('html')).toHaveAttribute('data-bs-theme', /auto/)
   await page.getByLabel('Use system setting').click()