test: re-point suite off retired standalone views

Phase-1 fallout: delete tests for deleted pages, re-point moved-behavior
tests to the trip/home page where the content now lives.

- maps.spec: keep M4/M7/M8 (home+trip maps); drop M1-3,5,6,9-11 (/map,
  /dailies & /stories mini-maps)
- map-ux: re-point MUX4/5 sort toggle to #trip-sort-toggle on trip page
- nav: N1->trip page, N2->home, drop N3 (/stats) + N5 (obsolete skip)
- dailies: T1->trip page; T2->trip page with oldest-first assertion;
  fix T3-T6 stale entry-detail selectors (.entry-* -> .journal-post-*,
  pre-existing failures from an earlier entry redesign)
- stories: S1/S5 -> trip feed story cards ([data-type=story])
- gpx-journey: load MapUtils from the trip page instead of /map
- a11y: A4 photo strips -> trip page; drop AX3 (covered by AX2)
- post/helpers: verify posted entry on the trip page (ACTIVE_TRIP_URL)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

tests/ui/a11y/accessibility.spec.js

@@ -69,7 +69,7 @@ test('A3f: clicking Cycling toggle sets aria-expanded="true" then back to false'
 
 // ── A4: Photo strip keyboard navigation ───────────────────────────────────────
 test('A4a: all photo strips have role=region and aria-label', async ({ page }) => {
-    await page.goto('/trips/italy-2026-demo/dailies');
+    await page.goto('/trips/italy-2026-demo');
     const strips = page.locator('.journal-photo-strip');
     const count = await strips.count();
     if (count === 0) return;
@@ -80,7 +80,7 @@ test('A4a: all photo strips have role=region and aria-label', async ({ page }) =
 });
 
 test('A4b: multi-slide photo strips have accessible prev/next controls', async ({ page }) => {
-    await page.goto('/trips/italy-2026-demo/dailies');
+    await page.goto('/trips/italy-2026-demo');
     const multiCount = await page.locator('.journal-photo-strip').evaluateAll(
         els => els.filter(el => parseInt(el.dataset.slides, 10) >= 2).length
     );
@@ -133,7 +133,6 @@ function axeScan(id, url) {
 
 axeScan('AX1', '/');
 axeScan('AX2', '/trips/italy-2026-demo');
-axeScan('AX3', '/trips/italy-2026-demo/dailies');
 axeScan('AX4', '/trips/italy-2026-demo/dailies/2026-09-01-0700-setting-off-from-campiglia.entry');
 axeScan('AX5', '/trips');