feat(glossary): add step 21 smart navigation

src/pages/glossaire/[...slug].astro

@@ -6,12 +6,14 @@ import GlossaryEntryLegacyNote from "../../components/GlossaryEntryLegacyNote.as
 import GlossaryEntryHero from "../../components/GlossaryEntryHero.astro";
 import GlossaryEntryBody from "../../components/GlossaryEntryBody.astro";
 import GlossaryEntryStickySync from "../../components/GlossaryEntryStickySync.astro";
+import GlossarySmartNav from "../../components/GlossarySmartNav.astro";
 import { getCollection, render } from "astro:content";
 import {
   getDisplayDomain,
   getDisplayFamily,
   getDisplayLevel,
   getRelationBlocks,
+  getGlossarySmartNavigation,
   normalizeGlossarySlug,
 } from "../../lib/glossary";
 
@@ -61,6 +63,7 @@ const isAliasRoute = requestedSlug !== canonicalSlug;
 const canonicalHref = `/glossaire/${canonicalSlug}/`;
 
 const relationBlocks = getRelationBlocks(entry, allEntries);
+const smartNavigation = getGlossarySmartNavigation(entry, allEntries);
 
 const displayFamily = getDisplayFamily(entry);
 const displayDomain = getDisplayDomain(entry);
@@ -93,6 +96,8 @@ const displayLevel = getDisplayLevel(entry);
     comparisonTraditions={entry.data.comparisonTraditions ?? []}
   />
 
+  <GlossarySmartNav smartNavigation={smartNavigation} />
+
   <GlossaryEntryBody>
     <Content />
   </GlossaryEntryBody>