Harmoniser les asides et le rendu des articles

Closes #5

Closes #6

Closes #8

Closes #9

Closes #10

themes/2026/layouts/_partials/dossier-summary.html

@@ -1,8 +1,12 @@
 {{- $current := . -}}
+{{- $showTitle := true -}}
 {{- if reflect.IsMap . -}}
   {{- with index . "Page" -}}
     {{- $current = . -}}
   {{- end -}}
+  {{- if isset . "ShowTitle" -}}
+    {{- $showTitle = index . "ShowTitle" -}}
+  {{- end -}}
 {{- end -}}
 
 {{- with $current.Params.dossier -}}
@@ -15,12 +19,14 @@
     {{- $sorted = sort $sorted "Weight" "asc" -}}
     {{- if gt (len $sorted) 1 -}}
 <nav aria-label="Sommaire du dossier">
+  {{- if $showTitle -}}
   <p><strong>{{ $dossierID }}</strong></p>
+  {{- end -}}
   <ol>
     {{- range $sorted -}}
-    <li>
+    <li{{ if eq .Permalink $current.Permalink }} class="is-current"{{ end }}>
       {{- if eq .Permalink $current.Permalink -}}
-      <strong>{{ .Title }}</strong>
+      <strong aria-current="page">{{ .Title }}</strong>
       {{- else -}}
       <a href="{{ .RelPermalink }}">{{ .Title }}</a>
       {{- end -}}