diff --git a/client/src/data_opex.json b/client/src/data_opex.json
index fdce507..749c5fb 100644
--- a/client/src/data_opex.json
+++ b/client/src/data_opex.json
@@ -8,7 +8,7 @@
       "libelle": "SAAS AGEVAL Gestion de la qualité",
       "detail": "Gestion qualité (procédures,FEI...)",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App global",
       "type": "SAAS",
       "compte": "613511",
@@ -21,7 +21,7 @@
       "libelle": "SAAS OCTIME Gestion de temps",
       "detail": "GTA",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App global",
       "type": "SAAS",
       "compte": "613511",
@@ -60,7 +60,7 @@
       "libelle": "SAAS ISI-APP Gestion de parc",
       "detail": "Outil de pilotage SI du parc + Connexion AD + Module Santé",
       "facturation": "Mensuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Infogérance",
       "type": "SAAS",
       "compte": "613511",
@@ -73,7 +73,7 @@
       "libelle": "SAAS DLD Gestion de la Conformité RGPD",
       "detail": "RGPD",
       "facturation": "Mensuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App global",
       "type": "SAAS",
       "compte": "613511",
@@ -86,7 +86,7 @@
       "libelle": "SAAS Gestion signature électronique",
       "detail": "DE électroniques",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App global",
       "type": "SAAS",
       "compte": "613511",
@@ -112,7 +112,7 @@
       "libelle": "Redevance SXS Gestion trésorerie SAGE",
       "detail": "Communications bancaires",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App global",
       "type": "SAAS",
       "compte": "613511",
@@ -138,7 +138,7 @@
       "libelle": "SAAS LIFEN Plateforme E-Santé Réceptions",
       "detail": "SMR / outil d'intégration dans le DPI depuis le DMP et/ou la MSS",
       "facturation": "Mensuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App SMR",
       "type": "SAAS",
       "compte": "613511",
@@ -151,7 +151,7 @@
       "libelle": "SAAS NOVRH",
       "detail": "SIRH : Maintenance et hébergement",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App global",
       "type": "SAAS",
       "compte": "613511",
@@ -164,7 +164,7 @@
       "libelle": "SAAS NOVRH Assistance",
       "detail": "SIRH : Assistance premium",
       "facturation": null,
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App global",
       "type": "Maintenance",
       "compte": "615610",
@@ -177,7 +177,7 @@
       "libelle": "Coffre fort numérique",
       "detail": "SIRH : Coffe fort numérique",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App global",
       "type": "SAAS",
       "compte": "613511",
@@ -190,7 +190,7 @@
       "libelle": "SAAS DUI Pole HEP",
       "detail": "Outil métier",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App HEP",
       "type": "SAAS",
       "compte": "613511",
@@ -203,7 +203,7 @@
       "libelle": "SAAS DUI BON PASTEUR",
       "detail": "Outil métier",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App HEP",
       "type": "SAAS",
       "compte": "613511",
@@ -229,7 +229,7 @@
       "libelle": "Infrastructures Data Center + Liens Internet",
       "detail": "DataCenter",
       "facturation": "Mensuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Infogérance",
       "type": "Loc. Infra Data Center",
       "compte": "613512",
@@ -242,7 +242,7 @@
       "libelle": "Liens internet Siège Data Center",
       "detail": "DataCenter",
       "facturation": "Mensuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Infogérance",
       "type": "Liens Internet",
       "compte": "626203",
@@ -255,7 +255,7 @@
       "libelle": "Prestation TMA réglementaire",
       "detail": "Gestion du temps module TMA",
       "facturation": "Au fil de l'eau",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App global",
       "type": "Prestation",
       "compte": "628400",
@@ -268,7 +268,7 @@
       "libelle": "Maintenance applicatifs",
       "detail": "Compta-first, paye-fisrt, GAP-first...",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App global",
       "type": "Maintenance",
       "compte": "615610",
@@ -281,7 +281,7 @@
       "libelle": "Maintenance FLEXICLOUD",
       "detail": "Connexions aux serveurs du DataCenter",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Infogérance",
       "type": "Maintenance",
       "compte": "615610",
@@ -294,7 +294,7 @@
       "libelle": "Abonnement Solution de télémaintenance",
       "detail": "Prise de main distante pour équipe IT",
       "facturation": "Annuelle Juin",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Infogérance",
       "type": "Maintenance",
       "compte": "615610",
@@ -307,7 +307,7 @@
       "libelle": "Assistance technique Niveau 3",
       "detail": "Contrat de prestation 10 j + 20h assistnce premium",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Infogérance",
       "type": "Prestation",
       "compte": "628400",
@@ -333,7 +333,7 @@
       "libelle": "Maintenance VEEAM",
       "detail": "DataCenter / Sauvegardes machines + Sauvegardes 0365",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Infogérance",
       "type": "Maintenance",
       "compte": "615610",
@@ -346,7 +346,7 @@
       "libelle": "Maintenance WATCHGUARD",
       "detail": "Sécurité /Pare-feux",
       "facturation": "Au fil de l'eau",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Sécurité",
       "type": "Maintenance",
       "compte": "615610",
@@ -359,7 +359,7 @@
       "libelle": "Maintenance EPDR WG",
       "detail": "Sécurité / Anti-virus",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Sécurité",
       "type": "Maintenance",
       "compte": "615610",
@@ -372,7 +372,7 @@
       "libelle": "Maintenance DARKTRACE",
       "detail": "Sécurité / Inteligence artificielle surveillance réseau",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Sécurité",
       "type": "Maintenance",
       "compte": "615610",
@@ -385,7 +385,7 @@
       "libelle": "Maintenance DARKTRACE ANTIGENA",
       "detail": "Sécurité / Inteligence artificielle surveillance réseau",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Sécurité",
       "type": "Maintenance",
       "compte": "615610",
@@ -398,7 +398,7 @@
       "libelle": "SAAS Protection mails DARKTRACE",
       "detail": "Sécurité / Inteligence artificielle surveillance réseau",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Sécurité",
       "type": "SAAS",
       "compte": "613511",
@@ -411,7 +411,7 @@
       "libelle": "SIEM / SOC / NEOEDGE",
       "detail": "Sécurité / corrélation données logs. Annalyse tentatives d'intrusion",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Sécurité",
       "type": "Prestation",
       "compte": "628400",
@@ -424,7 +424,7 @@
       "libelle": "Budget Petit matériel et Autres dépenses",
       "detail": "Divers matériels",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Infogérance",
       "type": "Petits matériels",
       "compte": "606241",
@@ -450,7 +450,7 @@
       "libelle": "Maintenance GAMMEO",
       "detail": "GMAO",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App global",
       "type": "Maintenance",
       "compte": "615610",
diff --git a/client/src/data_opex_2025.json b/client/src/data_opex_2025.json
index 5cc386c..54cf365 100644
--- a/client/src/data_opex_2025.json
+++ b/client/src/data_opex_2025.json
@@ -8,7 +8,7 @@
       "libelle": "SAAS AGEVAL Gestion de la qualité",
       "detail": "Gestion qualité (procédures,FEI...)",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App global",
       "type": "SAAS",
       "compte": "613511",
@@ -21,7 +21,7 @@
       "libelle": "SAAS OCTIME Gestion de temps",
       "detail": "GTA",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App global",
       "type": "SAAS",
       "compte": "613511",
@@ -60,7 +60,7 @@
       "libelle": "SAAS ISI-APP Gestion de parc",
       "detail": "Outil de pilotage SI du parc + Connexion AD + Module Santé",
       "facturation": "Mensuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Infogérance",
       "type": "SAAS",
       "compte": "613511",
@@ -73,7 +73,7 @@
       "libelle": "SAAS DLD Gestion de la Conformité RGPD",
       "detail": "RGPD",
       "facturation": "Mensuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App global",
       "type": "SAAS",
       "compte": "613511",
@@ -86,7 +86,7 @@
       "libelle": "SAAS Gestion signature électronique",
       "detail": "DE électroniques",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App global",
       "type": "SAAS",
       "compte": "613511",
@@ -112,7 +112,7 @@
       "libelle": "Redevance SXS Gestion trésorerie SAGE",
       "detail": "Communications bancaires",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App global",
       "type": "SAAS",
       "compte": "613511",
@@ -138,7 +138,7 @@
       "libelle": "SAAS LIFEN Plateforme E-Santé Réceptions",
       "detail": "SMR / outil d'intégration dans le DPI depuis le DMP et/ou la MSS",
       "facturation": "Mensuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "New",
       "type": "SAAS",
       "compte": "613511",
@@ -151,7 +151,7 @@
       "libelle": "NOVRH",
       "detail": "SIRH (année pleine)",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App global",
       "type": "SAAS",
       "compte": "613511",
@@ -164,7 +164,7 @@
       "libelle": "SAAS Protection mails DARKTRACE",
       "detail": "Sécurité",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "New",
       "type": "SAAS",
       "compte": "613511",
@@ -177,7 +177,7 @@
       "libelle": "SAAS DUI Pole HEP",
       "detail": "Outil métier",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App HEP",
       "type": "SAAS",
       "compte": "613511",
@@ -203,7 +203,7 @@
       "libelle": "Infrastructures Data Center + Liens Internet",
       "detail": "DataCenter",
       "facturation": "Mensuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Infogérance",
       "type": "Loc. Infra Data Center",
       "compte": "613512",
@@ -216,7 +216,7 @@
       "libelle": "Liens internet Siège Data Center",
       "detail": "DataCenter",
       "facturation": "Mensuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Infogérance",
       "type": "Liens Internet",
       "compte": "626203",
@@ -229,7 +229,7 @@
       "libelle": "Abonnements Liaisons internet siège et Data Center",
       "detail": "DataCenter",
       "facturation": "Mensuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Infogérance",
       "type": "Liens Internet",
       "compte": "626203",
@@ -242,7 +242,7 @@
       "libelle": "Prestation TMA réglementaire",
       "detail": "Gestion du temps module TMA",
       "facturation": "Au fil de l'eau",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App global",
       "type": "Prestation",
       "compte": "628400",
@@ -268,7 +268,7 @@
       "libelle": "Maintenance applicatifs",
       "detail": "Compta-first, paye-fisrt, GAP-first...",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App global",
       "type": "Maintenance",
       "compte": "615610",
@@ -294,7 +294,7 @@
       "libelle": "Maintenance OSIDOC  (A RESILIER)",
       "detail": "Gestion des contrats",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "App global",
       "type": "Maintenance",
       "compte": "615610",
@@ -307,7 +307,7 @@
       "libelle": "Maintenance FLEXICLOUD",
       "detail": "Connexions aux serveurs du DataCenter",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Infogérance",
       "type": "Maintenance",
       "compte": "615610",
@@ -320,7 +320,7 @@
       "libelle": "Abonnement Solution de télémaintenance",
       "detail": "Prise de main distante pour équipe IT",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Infogérance",
       "type": "Maintenance",
       "compte": "615610",
@@ -333,7 +333,7 @@
       "libelle": "Maintenance WATCHGUARD",
       "detail": "Sécurité /Pare-feux renouvellement des pare-feux tous les 5 ans",
       "facturation": "Au fil de l'eau",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Sécurité",
       "type": "Maintenance",
       "compte": "615610",
@@ -346,7 +346,7 @@
       "libelle": "Maintenance EPDR WG",
       "detail": "Sécurité / Anti-virus",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Sécurité",
       "type": "Maintenance",
       "compte": "615610",
@@ -359,7 +359,7 @@
       "libelle": "Maintenance VEEAM",
       "detail": "DataCenter / Sauvegardes machines + Sauvegardes 0365",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Infogérance",
       "type": "Maintenance",
       "compte": "615610",
@@ -372,7 +372,7 @@
       "libelle": "Maintenance DARKTRACE",
       "detail": "Sécurité / Inteligence artificielle surveillance réseau",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Sécurité",
       "type": "Maintenance",
       "compte": "615610",
@@ -385,7 +385,7 @@
       "libelle": "Maintenance DARKTRACE ANTIGENA",
       "detail": "Sécurité / Inteligence artificielle surveillance réseau",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Sécurité",
       "type": "Maintenance",
       "compte": "615610",
@@ -398,7 +398,7 @@
       "libelle": "Budget Petit matériel et Autres dépenses",
       "detail": "Divers matériels",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "Infogérance",
       "type": "Petits matériels",
       "compte": null,
@@ -424,7 +424,7 @@
       "libelle": "Maintenance GAMMEO",
       "detail": "GMAO",
       "facturation": "Annuelle",
-      "mode_ventilation": "Prorata classe 6",
+      "mode_ventilation": "Prorata C 6",
       "categorie": "New",
       "type": "Maintenance",
       "compte": null,
diff --git a/client/src/pages/DsiOpex.tsx b/client/src/pages/DsiOpex.tsx
index 227078b..18c03dc 100644
--- a/client/src/pages/DsiOpex.tsx
+++ b/client/src/pages/DsiOpex.tsx
@@ -493,14 +493,14 @@ export default function DsiOpex() {
 
   const CATEGORIES_FILTER = useMemo(() => ['Toutes', ...categoriesPresentes], [categoriesPresentes]);
 
-  // Basculer le mode de ventilation d'une ligne (Prorata classe 6 ↔ Manuel)
+  // Basculer le mode de ventilation d'une ligne (Prorata C 6 ↔ Manuel)
   const handleToggleVentilation = useCallback((id: string) => {
     if (isValidated) return;
     setOpexState(prev => ({
       ...prev,
       lignes: prev.lignes.map(l => l.id === id ? {
         ...l,
-        mode_ventilation: (l.mode_ventilation === 'Manuel') ? 'Prorata classe 6' : 'Manuel',
+        mode_ventilation: (l.mode_ventilation === 'Manuel') ? 'Prorata C 6' : 'Manuel',
       } : l),
     }));
     setIsDirty(true);
@@ -1091,10 +1091,10 @@ export default function DsiOpex() {
                         <SortBtn col="libelle" label="Poste de charge" />
                       </th>
                       <th className="text-left px-4 py-3 font-medium text-muted-foreground hidden md:table-cell">Catégorie</th>
-                      <th className="text-left px-3 py-3 font-medium text-muted-foreground hidden lg:table-cell w-20 max-w-[80px]">Type</th>
                       <th className="text-left px-4 py-3 font-medium text-muted-foreground hidden xl:table-cell">Facturation</th>
+                      <th className="text-left px-4 py-3 font-medium text-muted-foreground hidden xl:table-cell">Ventilation</th>
+                      {showDetails && <th className="text-left px-3 py-3 font-medium text-muted-foreground hidden lg:table-cell w-20 max-w-[80px]">Type</th>}
                       {showDetails && <th className="text-left px-4 py-3 font-medium text-muted-foreground hidden xl:table-cell">Compte</th>}
-                      {showDetails && <th className="text-left px-4 py-3 font-medium text-muted-foreground hidden xl:table-cell">Ventilation</th>}
                       <th className="text-right px-4 py-3 font-medium text-muted-foreground">Budget N-1</th>
                       <th className="text-right px-4 py-3 font-medium text-muted-foreground" style={{ minWidth: '140px' }}>
                         <SortBtn col="montant" label={`Prév. ${annee}`} />
@@ -1138,31 +1138,31 @@ export default function DsiOpex() {
                                 {ligne.categorie}
                               </span>
                             </td>
-                            <td className="px-3 py-3 text-xs text-muted-foreground hidden lg:table-cell w-20 max-w-[80px] truncate" title={ligne.type || ''}>{ligne.type || '—'}</td>
                             <td className="px-4 py-3 text-sm text-muted-foreground hidden xl:table-cell">{ligne.facturation || '—'}</td>
+                            {/* Ventilation — toujours visible (affichage normal) */}
+                            <td className="px-4 py-3 text-xs hidden xl:table-cell">
+                              {isValidated ? (
+                                <span className={`inline-flex px-2 py-0.5 rounded-full text-xs font-medium ${
+                                  ligne.mode_ventilation === 'Manuel' ? 'bg-blue-100 text-blue-700' : 'bg-emerald-100 text-emerald-700'
+                                }`}>{ligne.mode_ventilation === 'Manuel' ? 'Manuel' : 'Prorata C 6'}</span>
+                              ) : (
+                                <button
+                                  onClick={() => handleToggleVentilation(ligne.id)}
+                                  title="Cliquer pour basculer Prorata C 6 ↔ Manuel"
+                                  className={`inline-flex items-center gap-1 px-2 py-0.5 rounded-full text-xs font-medium border transition-colors hover:opacity-80 cursor-pointer ${
+                                    ligne.mode_ventilation === 'Manuel'
+                                      ? 'bg-blue-100 text-blue-700 border-blue-300 hover:bg-blue-200'
+                                      : 'bg-emerald-100 text-emerald-700 border-emerald-300 hover:bg-emerald-200'
+                                  }`}
+                                >
+                                  {ligne.mode_ventilation === 'Manuel' ? '🔒' : '🔓'}
+                                  {ligne.mode_ventilation === 'Manuel' ? 'Manuel' : 'Prorata C 6'}
+                                </button>
+                              )}
+                            </td>
+                            {/* Type — visible uniquement en mode détails */}
+                            {showDetails && <td className="px-3 py-3 text-xs text-muted-foreground hidden lg:table-cell w-20 max-w-[80px] truncate" title={ligne.type || ''}>{ligne.type || '—'}</td>}
                             {showDetails && <td className="px-4 py-3 text-xs font-mono text-muted-foreground hidden xl:table-cell">{ligne.compte || '—'}</td>}
-                            {showDetails && (
-                              <td className="px-4 py-3 text-xs hidden xl:table-cell">
-                                {isValidated ? (
-                                  <span className={`inline-flex px-2 py-0.5 rounded-full text-xs font-medium ${
-                                    ligne.mode_ventilation === 'Manuel' ? 'bg-blue-100 text-blue-700' : 'bg-emerald-100 text-emerald-700'
-                                  }`}>{ligne.mode_ventilation || 'Prorata classe 6'}</span>
-                                ) : (
-                                  <button
-                                    onClick={() => handleToggleVentilation(ligne.id)}
-                                    title="Cliquer pour basculer Prorata ↔ Manuel"
-                                    className={`inline-flex items-center gap-1 px-2 py-0.5 rounded-full text-xs font-medium border transition-colors hover:opacity-80 cursor-pointer ${
-                                      ligne.mode_ventilation === 'Manuel'
-                                        ? 'bg-blue-100 text-blue-700 border-blue-300 hover:bg-blue-200'
-                                        : 'bg-emerald-100 text-emerald-700 border-emerald-300 hover:bg-emerald-200'
-                                    }`}
-                                  >
-                                    {ligne.mode_ventilation === 'Manuel' ? '🔒' : '🔓'}
-                                    {ligne.mode_ventilation || 'Prorata classe 6'}
-                                  </button>
-                                )}
-                              </td>
-                            )}
                             <td className="px-4 py-3 text-right text-sm text-muted-foreground tabular-nums">
                               {formatNum(ligne.budget_n1)}
                             </td>
@@ -1327,7 +1327,7 @@ export default function DsiOpex() {
                                   ? 'text-blue-700 bg-blue-50/60 border-b-2 border-blue-400'
                                   : 'text-emerald-700 bg-emerald-50/60 border-b-2 border-emerald-400'
                               }`}
-                              title={`${ligne.libelle} — ${isManuel ? 'Saisie manuelle' : 'Prorata classe 6'} — ${formatEuros(ligne.montant)}`}
+                              title={`${ligne.libelle} — ${isManuel ? 'Saisie manuelle' : 'Prorata C 6'} — ${formatEuros(ligne.montant)}`}
                             >
                               <span className="block truncate max-w-[100px]" style={{ writingMode: 'horizontal-tb' }}>
                                 {ligne.libelle.length > 18 ? ligne.libelle.slice(0, 16) + '…' : ligne.libelle}