fix: align templates with wireframe styling

- Fix article header tag borders: replace broken border-current/20
  (Tailwind can't apply opacity to currentColor) with per-tag border
  colour classes via new get_tag_border_css filter
- Add calendar icon before article date in article header
- Add clock icon before read time in article header and home featured
- Match article card footer to wireframe (remove extra min-read span)
- Add rounded-md to code block matching wireframe

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

apps/core/templatetags/core_tags.py

@@ -54,3 +54,12 @@ def get_tag_css(tag):
         meta = TagMetadata.objects.filter(tag=tag).first()
     classes = meta.get_css_classes() if meta else TagMetadata.get_fallback_css()
     return mark_safe(f"{classes['bg']} {classes['text']}")
+
+
+@register.filter
+def get_tag_border_css(tag):
+    meta = getattr(tag, "metadata", None)
+    if meta is None:
+        meta = TagMetadata.objects.filter(tag=tag).first()
+    classes = meta.get_css_classes() if meta else TagMetadata.get_fallback_css()
+    return mark_safe(classes.get("border", ""))

apps/core/tests/test_more.py

@@ -27,6 +27,13 @@ def test_get_tag_css_fallback():
     assert "bg-zinc" in value
 
 
+@pytest.mark.django_db
+def test_get_tag_border_css_fallback():
+    tag = Tag.objects.create(name="y", slug="y")
+    value = core_tags.get_tag_border_css(tag)
+    assert "border-zinc" in value
+
+
 @pytest.mark.django_db
 def test_get_legal_pages_tag_callable(home_page):
     legal_index = LegalIndexPage(title="Legal", slug="legal")