Fix client autocomplete pagination + hide admin sidebar on front-end pages

fetchClientNames() requested page[limit]=200 but never followed
links.next, and JSON:API silently clamps to a 50-item hard cap -- with
106 client terms, everything past the 50th alphabetically (e.g. "LE
CAMPUS") was dropped. Now loops through every page like fetchLignes()
already does.

The core Navigation module's admin sidebar (#admin-toolbar) was showing
on our custom /lignes, /dashboard, /lignes/historique and lier-entree
pages. Added a route-scoped library (attached only for those route
names in hook_page_attachments(), not folded into the always-on
admin_chrome attachment) so real Drupal admin pages keep the sidebar.

web/modules/custom/figli_compta_ledger/js/home.js

@@ -124,10 +124,20 @@
   }
 
   async function fetchClientNames() {
-    const res = await fetch('/jsonapi/taxonomy_term/client?sort=name&page[limit]=200', { headers: { Accept: 'application/vnd.api+json' } });
-    if (!res.ok) throw new Error('JSON:API a répondu ' + res.status);
-    const json = await res.json();
-    return (json.data || []).map((t) => t.attributes.name).filter(Boolean).sort();
+    // page[limit]=200 is silently clamped to core's hard cap of 50 by
+    // JSON:API (Query\OffsetPage::SIZE_MAX) -- with 106 client terms,
+    // that cut off everything past the 50th alphabetically (e.g. "LE
+    // CAMPUS") unless every page is followed, same as fetchLignes() above.
+    let url = '/jsonapi/taxonomy_term/client?sort=name&page[limit]=50';
+    const names = [];
+    while (url) {
+      const res = await fetch(url, { headers: { Accept: 'application/vnd.api+json' } });
+      if (!res.ok) throw new Error('JSON:API a répondu ' + res.status);
+      const json = await res.json();
+      names.push(...(json.data || []).map((t) => t.attributes.name).filter(Boolean));
+      url = json.links && json.links.next ? json.links.next.href : null;
+    }
+    return names.sort();
   }
 
   async function fetchYearsList() {