data-fair · BatLeDev · Aug 14, 2026 · Aug 13, 2026 · Aug 13, 2026 · Aug 13, 2026
diff --git a/api/package.json b/api/package.json
@@ -16,7 +16,7 @@
     "@data-fair/lib-common-types": "^1.21.0",
     "@data-fair/lib-express": "^1.23.0",
     "@data-fair/lib-node": "^2.12.1",
-    "@data-fair/lib-utils": "^1.12.1",
+    "@data-fair/lib-utils": "^1.12.2",
     "@data-fair/portals-shared-markdown": "*",
     "cheerio": "^1.0.0",
     "config": "^4.4.1",

diff --git a/package-lock.json b/package-lock.json
diff --git a/patches/README.md b/patches/README.md
@@ -114,6 +114,36 @@ stays valid.
 
 **Removal criterion**: when Vuetify stops emitting `aria-hidden="false"` on labels.
 
+### `lib/components/VImg/VImg.js` — W3C HTML validity for decorative images
+
+`VImg` mirrors its `alt` prop onto its root element, next to a `role` that is guarded on
+the same value:
+
+```js
+'aria-label': props.alt,
+role: props.alt ? 'img' : undefined
+```
+
+A decorative image is declared with `alt=""` — the empty string is falsy, so the root
+gets no role, but the attribute is still emitted and the element renders as
+`<div class="v-img" aria-label="">`. W3C rejects that: `aria-label` must not be used on
+a `div` whose role is `generic`. RGAA 8.2. Four occurrences on the portal visualisation
+catalogue (one per card thumbnail), twenty on a full catalogue page.
+
+This patch emits the attribute only when `alt` is non-empty (`props.alt || undefined`),
+the guard the neighbouring `role` binding already applies. Nothing changes for
+informative images: they keep `role="img"` and their label. Decorative ones lose an
+attribute that carried no name anyway — the inner `img` keeps its `alt=""`, which is
+what makes it decorative, so restitution is unchanged.
+
+There is no userland fix: the object holding `aria-label` is the last argument of the
+root's `mergeProps`, so it overrides any `aria-label` passed by the caller, and dropping
+the `alt` prop instead would leave the inner `img` without an `alt` attribute — one W3C
+error traded for another.
+
+**Removal criterion**: when Vuetify guards `aria-label` like it guards `role` — reported
+as vuetifyjs/vuetify#23111, fix proposed upstream in vuetifyjs/vuetify#23112.
+
 ### `lib/components/VSelect/VSelect.js` — W3C HTML validity for the hidden native select
 
 `VSelect` mirrors its items into a `<select hidden>` so the value is submitted with a

diff --git a/patches/vuetify+4.1.9.patch b/patches/vuetify+4.1.9.patch
@@ -105,6 +105,21 @@ index 5b75eb8..bef9f28 100644
          for: ariaHidden ? undefined : id.value
        };
      });
+diff --git a/node_modules/vuetify/lib/components/VImg/VImg.js b/node_modules/vuetify/lib/components/VImg/VImg.js
+index 7aab774..18ca7f3 100644
+--- a/node_modules/vuetify/lib/components/VImg/VImg.js
++++ b/node_modules/vuetify/lib/components/VImg/VImg.js
+@@ -295,7 +295,9 @@ export const VImg = genericComponent()({
+         }, backgroundColorStyles.value, roundedStyles.value, props.style]
+       }, responsiveProps, rootAttrs, {
+         "aspectRatio": aspectRatio.value,
+-        "aria-label": props.alt,
++        // an empty `alt` (decorative image) must not emit `aria-label`: the root would
++        // then carry it without a role, which W3C rejects (same guard as `role` below)
++        "aria-label": props.alt || undefined,
+         "role": props.alt ? 'img' : undefined
+       }), {
+         additional: () => _createElementVNode(_Fragment, null, [_createVNode(__image, imageAttrs, null), _createVNode(__preloadImage, null, null), _createVNode(__gradient, null, null), _createVNode(__placeholder, null, null), _createVNode(__error, null, null)]),
 diff --git a/node_modules/vuetify/lib/components/VSelect/VSelect.js b/node_modules/vuetify/lib/components/VSelect/VSelect.js
 index 42d2a00..08c6f77 100644
 --- a/node_modules/vuetify/lib/components/VSelect/VSelect.js

diff --git a/portal/app/components/error/error-forbidden.vue b/portal/app/components/error/error-forbidden.vue
@@ -4,6 +4,7 @@
     width="1145.57"
     height="819.91"
     viewBox="0 0 1145.57 819.91"
+    aria-hidden="true"
   >
     <path
       d="M1154.4,591.26c-26.57,54.81-80.52,91.46-136.43,115.63-75.27,32.55-158.16,45.46-239.91,40q-21.49-1.43-42.85-4.57a540.44,540.44,0,0,1-143.27-41.72q-19.74-8.89-38.68-19.41a494.85,494.85,0,0,1-60.46-39.54q-7.23-5.52-14.26-11.32c-3.25-2.68-6.47-5.42-9.74-8.08-6.9-5.61-14-10.94-21.92-14.93a78.31,78.31,0,0,0-7.34-3.24c-25.08-9.54-54-5.94-80.11,1.5-19.86,5.66-39.22,13.41-59.06,18.94a196,196,0,0,1-26.91,5.72A143.21,143.21,0,0,1,213,624.93l-1.67-.52q-4.2-1.32-8.33-2.89l-1.67-.64q-4-1.54-7.83-3.31l-1.67-.76q-4-1.86-7.83-3.93c-.92-.48-1.83-1-2.73-1.49a163.67,163.67,0,0,1-39.16-30.49c-.33-.33-.64-.67-1-1-1.59-1.72-3.15-3.47-4.66-5.26-.56-.66-1.12-1.32-1.67-2q-2.69-3.28-5.19-6.71c-.25-.33-.49-.67-.73-1A144.59,144.59,0,0,1,112,534.44c-.14-.33-.27-.67-.39-1q-2-5.15-3.65-10.47c-.45-1.48-.88-3-1.26-4.48-.13-.44-.25-.89-.36-1.33-5.52-21.73-6.15-44.32-6.15-66.78q0-3.93,0-7.85c.16-36.33.72-73.28,6.08-109.11,0-.25.07-.5.11-.74a340.76,340.76,0,0,1,7.31-35.82A264.25,264.25,0,0,1,126,260.56c12.33-29,30.26-55.39,50.17-79.85C226.32,119.16,292.09,67.49,369.07,48.15c82.95-20.83,175.14-.87,242.05,52.4,20.4,16.24,38.73,35.47,61.64,47.92,20,10.84,43.41,15.33,64.83,6.8,17.7-7.05,29.22-10.55,49.1-9.48A411.56,411.56,0,0,1,907.05,171c1.56.57,3.12,1.16,4.67,1.75C1012.43,211.28,1099,287.83,1144,386.2q1.79,3.9,3.47,7.86C1174.3,456.73,1184,530.18,1154.4,591.26Z"

diff --git a/portal/app/components/error/error-not-found.vue b/portal/app/components/error/error-not-found.vue
@@ -4,6 +4,7 @@
     width="1074.392"
     height="584.231"
     viewBox="0 0 1074.392 584.231"
+    aria-hidden="true"
   >
     <ellipse
       cx="540.64346"

diff --git a/portal/app/components/error/error-server.vue b/portal/app/components/error/error-server.vue
@@ -4,6 +4,7 @@
     width="1032.24"
     height="832.63"
     viewBox="0 0 1032.24 832.63"
+    aria-hidden="true"
   >
     <ellipse
       cx="530.99"

diff --git a/portal/app/components/icon/icon-bluesky.vue b/portal/app/components/icon/icon-bluesky.vue
@@ -4,6 +4,7 @@
     width="24"
     height="24"
     viewBox="0 0 24 24"
+    aria-hidden="true"
   >
     <path
       fill="currentColor"

diff --git a/portal/app/components/icon/icon-x.vue b/portal/app/components/icon/icon-x.vue
@@ -4,6 +4,7 @@
     width="24"
     height="24"
     viewBox="0 0 24 24"
+    aria-hidden="true"
   >
     <g fill="currentColor">
       <path d="M1 2h2.5L18.5 22h-2.5z" />

diff --git a/portal/app/components/layout/layout-full-app-bar.vue b/portal/app/components/layout/layout-full-app-bar.vue
@@ -4,11 +4,17 @@
     :color="portalConfig.navBar.color"
     flat
   >
-    <!-- Logo -->
+    <!--
+      Logo: hidden between the sm and md breakpoints, where it shares this fixed-height bar
+      with the breadcrumbs. A wide logo leaves too little room there and pushes the end of the
+      trail out of the window, with no way to scroll to it (RGAA 10.11 and 10.12). Below sm the
+      breadcrumbs are hidden, so the logo gets the bar back.
+    -->
     <layout-header-logo
       v-if="logo"
       :height="(appBarHeight || 64) - 10"
       :logo="logo"
+      class="d-sm-none d-md-flex"
     />
 
     <!-- Breadcrumbs -->