Add inactive UIUX V2 shared components

app/ui/templates/components/context_bar_v2.html

@@ -0,0 +1,16 @@
+{#
+  UI/UX V2 Phase 1A — Optional page context bar (INERT UNTIL INCLUDED)
+
+  Combines breadcrumbs and page header without touching the current layout.
+  A later phase can include this wrapper on selected pages after route-level
+  breadcrumb/back/action context has been supplied explicitly.
+#}
+{% set _has_breadcrumbs = breadcrumbs_v2|default([], true) %}
+{% set _has_page_header = page_title_v2|default('', true) or page_description_v2|default('', true) or back_url_v2|default('', true) or page_actions_v2|default([], true) %}
+
+{% if _has_breadcrumbs or _has_page_header %}
+<section class="mx-auto w-full max-w-[1500px] space-y-4 px-4 py-5 sm:px-6 lg:px-8" data-uiux-v2="context-bar">
+  {% include "ui/templates/components/breadcrumbs_v2.html" %}
+  {% include "ui/templates/components/page_header_v2.html" %}
+</section>
+{% endif %}