diff --git a/frontend/index.html b/frontend/index.html
index 84a9288..d987a8c 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -2729,7 +2729,7 @@
                         </section>
 
                         <section class="help-section" id="help-interface">
-                            <h2>🧭 Interface utilisateur</h2>
+                            <h2 data-i18n="help.nav_interface">🧭 Interface utilisateur</h2>
 
                             <h3 data-i18n="help.header_section">En-tête</h3>
                             <pdata-i18n="auto.209c5490">
@@ -2739,7 +2739,7 @@
                             <ul>
                                 <li>
                                     <strong data-i18n="help.hamburger_btn">Bouton menu hamburger</strong>
-                                    (mobile) : Affiche/masque la sidebar
+                                    : <span data-i18n="help.desc_hamburger">obile) : Affiche/masque la sidebar</span>
                                 </li>
                                 <li>
                                     <strong data-i18n="help.sidebar_toggle_btn">Bouton toggle sidebar</strong>
diff --git a/frontend/locales/en.json b/frontend/locales/en.json
index 2e596a7..ca251fb 100644
--- a/frontend/locales/en.json
+++ b/frontend/locales/en.json
@@ -747,5 +747,50 @@
   "admin.col_status": "Status",
   "admin.col_last_login": "Last login",
   "admin.col_actions": "Actions",
-  "common.never": "Never"
+  "common.never": "Never",
+  "help.desc_hamburger": "Show/hide the sidebar",
+  "help.desc_sidebar_toggle": "Hide the sidebar for more space",
+  "help.desc_logo": "Return to home",
+  "help.desc_search_bar": "Global search with autocomplete",
+  "help.desc_vault_indicator": "Shows the active context (All, vault1, etc.)",
+  "help.desc_vaults_tab": "File and folder tree",
+  "help.desc_tags_tab": "Clickable tag cloud",
+  "help.desc_filtering": "Search bar to filter files/tags",
+  "help.desc_quick_select": "Dropdown to change vault",
+  "help.desc_resize": "Drag the right edge to adjust width",
+  "help.desc_hide": "Click the sidebar icon in the header",
+  "help.desc_breadcrumb": "File path (clickable to reposition sidebar)",
+  "help.desc_title_tags": "File metadata",
+  "help.desc_action_buttons": "Copy, Source, Download, Edit, Open in new window",
+  "help.desc_rendered_content": "Markdown with wikilinks and images",
+  "help.065f53ee": "Silent auto-save after 2s of inactivity",
+  "help.ef1531ce": "A temporary tab (italic) is replaced",
+  "help.7db70e27": "Copy, Source, Download, Edit, Open in new window",
+  "help.d186a19e": "The \"Recent\" tab in the sidebar lists your",
+  "help.e3fce7a3": "Opens the file in a temporary tab (preview,",
+  "help.170a6982": "Horizontal display with the file name",
+  "help.c8532869": "Completion, rewrite, translation (see",
+  "help.fdeaf803": "Each file type has its icon (markdown, code, etc.)",
+  "help.f0adf67a": "Scroll wheel to zoom, click-drag to move",
+  "help.ab2c4150": "Files (squares) and folders (circles) with icons",
+  "help.89bd3c4c": "Only shows nodes with a specific tag",
+  "help.9f78b3ec": "Easier navigation in long files",
+  "help.085ec31f": "Quick select at the top of the Vault tab",
+  "help.6b88a375": "Debounce delay, results per page, timeout",
+  "help.e5b67e3d": "Your choice is saved in localStorage",
+  "help.4de7e318": "The 50 most recent searches (localStorage)",
+  "help.6b8fc728": "↑/↓ to navigate, Enter to select",
+  "help.9edeaa11": "Controls exploration depth (0-3)",
+  "help.6e940dac": "Click the sidebar icon in the header",
+  "help.a579cf4d": "Preview note content without navigating",
+  "help.5d0fbb81": "Workers, TF-IDF boosts, prefix expansions",
+  "help.5ab8c78d": "Stay open until manually closed",
+  "help.6ae5342c": "Index stats, memory, search engine",
+  "help.8717768b": "Node metadata (tags, links, path)",
+  "help.6a5ddef2": "Tags adapt to the selected vault",
+  "help.e23c94dd": "In the toolbar (when available)",
+  "help.00b9572b": "Results ranked by TF-IDF relevance",
+  "help.a4a4e21b": "\"×\" button to reset the filter",
+  "help.04df1506": "Global search with autocomplete",
+  "help.d5c977ac": "Code blocks adapt to the theme"
 }
\ No newline at end of file
diff --git a/frontend/locales/fr.json b/frontend/locales/fr.json
index 23c4323..14939f1 100644
--- a/frontend/locales/fr.json
+++ b/frontend/locales/fr.json
@@ -747,5 +747,50 @@
   "admin.col_status": "Statut",
   "admin.col_last_login": "Dernière connexion",
   "admin.col_actions": "Actions",
-  "common.never": "Jamais"
+  "common.never": "Jamais",
+  "help.desc_hamburger": "Affiche/masque la sidebar",
+  "help.desc_sidebar_toggle": "Masque la sidebar pour plus d'espace",
+  "help.desc_logo": "Retour à l'accueil",
+  "help.desc_search_bar": "Recherche globale avec autocomplétion",
+  "help.desc_vault_indicator": "Affiche le contexte actif (All, vault1, etc.)",
+  "help.desc_vaults_tab": "Arborescence des fichiers et dossiers",
+  "help.desc_tags_tab": "Nuage de tags cliquables",
+  "help.desc_filtering": "Barre de recherche pour filtrer fichiers/tags",
+  "help.desc_quick_select": "Dropdown pour changer de vault",
+  "help.desc_resize": "Glissez le bord droit pour ajuster la largeur",
+  "help.desc_hide": "Cliquez sur l'icône sidebar dans le header",
+  "help.desc_breadcrumb": "Chemin du fichier (cliquable pour repositionner la sidebar)",
+  "help.desc_title_tags": "Métadonnées du fichier",
+  "help.desc_action_buttons": "Copier, Source, Télécharger, Éditer, Ouvrir dans nouvelle fenêtre",
+  "help.desc_rendered_content": "Markdown avec wikilinks et images",
+  "help.065f53ee": ":\n                                    Auto-save silencieux après 2s d'inactivité,\n                                    flash vert de confirmation",
+  "help.ef1531ce": ": Un\n                                    onglet temporaire (italique) est remplacé\n                                    par le prochain clic",
+  "help.7db70e27": ": Copier,\n                                    Source, Télécharger, Éditer, Ouvrir dans\n                                    nouvelle fenêtre",
+  "help.d186a19e": ":\n                                    L'onglet \"Récent\" dans la sidebar liste vos\n                                    derniers fichiers",
+  "help.e3fce7a3": ": Ouvre le\n                                    fichier dans un onglet temporaire (aperçu,\n                                    italique)",
+  "help.170a6982": ": Affichage\n                                    horizontal avec le nom du fichier et son\n                                    icône",
+  "help.c8532869": ":\n                                    Complétion, réécriture, traduction (voir\n                                    section",
+  "help.fdeaf803": ": Chaque type de\n                                    fichier a son icône (markdown, code, etc.)",
+  "help.f0adf67a": ": Molette pour\n                                    zoomer, cliquer-glisser pour se déplacer",
+  "help.ab2c4150": ": Fichiers (carrés)\n                                    et dossiers (cercles) avec icônes",
+  "help.89bd3c4c": ": N'affiche\n                                    que les nœuds avec un tag spécifique",
+  "help.9f78b3ec": ":\n                                    Navigation facilitée dans les fichiers longs",
+  "help.085ec31f": ":\n                                    Sélection rapide en haut de l'onglet Vaults",
+  "help.6b88a375": ":\n                                    Délai debounce, résultats par page, timeout",
+  "help.e5b67e3d": ": Votre choix\n                                    est sauvegardé en localStorage",
+  "help.4de7e318": ": Les 50\n                                    dernières recherches (localStorage)",
+  "help.6b8fc728": ": ↑/↓\n                                    pour naviguer, Enter pour sélectionner",
+  "help.9edeaa11": ":\n                                    Contrôle la profondeur d'exploration (0-3)",
+  "help.6e940dac": ": Cliquez sur\n                                    l'icône sidebar dans le header",
+  "help.a579cf4d": ": Aperçu du\n                                    contenu de la note sans naviguer",
+  "help.5d0fbb81": ":\n                                    Workers, boosts TF-IDF, expansions préfixe",
+  "help.5ab8c78d": ":\n                                    Restent ouverts jusqu'à fermeture manuelle",
+  "help.6ae5342c": ": Stats index,\n                                    mémoire, moteur de recherche",
+  "help.8717768b": ":\n                                    Métadonnées du nœud (tags, liens, chemin)",
+  "help.6a5ddef2": ": Les tags\n                                    s'adaptent au vault sélectionné",
+  "help.e23c94dd": ": Dans la\n                                    barre d'outils (le cas échéant)",
+  "help.00b9572b": ":\n                                    Résultats classés par pertinence TF-IDF",
+  "help.a4a4e21b": ": Bouton \"×\" pour\n                                    réinitialiser le filtre",
+  "help.04df1506": ":\n                                    Recherche globale avec autocomplétion",
+  "help.d5c977ac": ": Les blocs de\n                                    code s'adaptent au thème"
 }
\ No newline at end of file