feat: tour page photos-first layout, mobile booking bar; board 1 fixes

Tour page (boards 2 and 3):
- Replace the blurred 'Welcome to {city}' hero with a breadcrumb and a photo
  gallery (1 large + 2, 'All N photos' opens the lightbox); the H1 title,
  rating with review count and facts follow; booking card stays sticky
- Phones/tablets: swipeable photos, name before price, 2x2 facts, and a
  fixed bottom bar with price + Check availability (vc-tour.css)

Board 1:
- Hide Viator internal tags ('Agent Low Quality Product'...) from the tour
  category, listing filter and activities section (VC_Tags, tested)
- Listings: run the query filter late and set posts_per_archive_page so
  pages show 12 tours as the count says
- Footer columns without a menu show default links (quick links, structure
  cities, contact/about/faq) instead of empty headings

Plugin 1.9.5, theme 1.0.13.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

viator-collector/assets/js/vc-design.js

@@ -138,6 +138,9 @@
     box.querySelector(".vc-lightbox__next").addEventListener("click", function () { show(idx + 1); });
     box.querySelector(".vc-lightbox__close").addEventListener("click", close);
     box.addEventListener("click", function (e) { if (e.target === box) close(); });
+    /* tour page top gallery: "All N photos" opens at the first photo not on show */
+    var allBtn = app.querySelector(".tgal__all");
+    if (allBtn) allBtn.addEventListener("click", function () { open(Math.min(3, imgs.length - 1)); });
     document.addEventListener("keydown", function (e) {
       if (!box.classList.contains("is-open")) return;
       if (e.key === "Escape") close();