diff --git a/client/src/pages/DsiOpex.tsx b/client/src/pages/DsiOpex.tsx
index b2affaf..3f8bd19 100644
--- a/client/src/pages/DsiOpex.tsx
+++ b/client/src/pages/DsiOpex.tsx
@@ -384,6 +384,7 @@ interface BaseRow {
   etablissementNom: string | null;
   baseRepartition: string;
   baseRepartitionHep: string | null;
+  modeManuel: boolean;
 }
 
 interface ClesRepartitionViewProps {
@@ -432,10 +433,22 @@ function ClesRepartitionView({ annee, basesRepartitionRaw, isLoadingBases, isErr
       etablissementNom: row.etablissementNom,
       baseRepartition,
       baseRepartitionHep,
+      modeManuel: row.modeManuel,
     });
     setEditingCell(null);
   }
 
+  function toggleModeManuel(row: BaseRow) {
+    setBaseRepartition.mutate({
+      annee,
+      etablissementCode: row.etablissementCode,
+      etablissementNom: row.etablissementNom,
+      baseRepartition: parseFloat(row.baseRepartition ?? '0'),
+      baseRepartitionHep: parseFloat(row.baseRepartitionHep ?? '0'),
+      modeManuel: !row.modeManuel,
+    });
+  }
+
   async function handleFileImport(file: File) {
     try {
       const XLSX = await import('xlsx');
@@ -629,12 +642,15 @@ function ClesRepartitionView({ annee, basesRepartitionRaw, isLoadingBases, isErr
               <th className="px-4 py-3 text-right font-semibold text-foreground text-xs uppercase tracking-wide w-48">
                 Base répartition {anneeBase} / HEP
               </th>
+              <th className="px-4 py-3 text-center font-semibold text-foreground text-xs uppercase tracking-wide w-36" title="Si activé, tous les montants OPEX de cet établissement sont saisis manuellement (pas de calcul prorata)">
+                Tout manuel
+              </th>
             </tr>
           </thead>
           <tbody>
             {rows.length === 0 && (
               <tr>
-                <td colSpan={4} className="px-4 py-12 text-center text-muted-foreground">
+                <td colSpan={5} className="px-4 py-12 text-center text-muted-foreground">
                   {basesRepartitionRaw.length === 0
                     ? `Aucune base de répartition pour ${annee}. Importez un fichier ou saisissez les valeurs manuellement.`
                     : 'Aucun résultat pour cette recherche.'}
@@ -642,9 +658,16 @@ function ClesRepartitionView({ annee, basesRepartitionRaw, isLoadingBases, isErr
               </tr>
             )}
             {rows.map((row, idx) => (
-              <tr key={row.etablissementCode} className={`border-b border-border/50 hover:bg-muted/20 transition-colors ${idx % 2 === 0 ? '' : 'bg-muted/10'}`}>
+              <tr key={row.etablissementCode} className={`border-b border-border/50 hover:bg-muted/20 transition-colors ${row.modeManuel ? 'bg-amber-50/60' : idx % 2 === 0 ? '' : 'bg-muted/10'}`}>
                 <td className="px-4 py-2.5 font-mono text-xs text-muted-foreground">{row.etablissementCode}</td>
-                <td className="px-4 py-2.5 font-medium text-foreground">{row.etablissementNom ?? row.etablissementCode}</td>
+                <td className="px-4 py-2.5 font-medium text-foreground">
+                  {row.etablissementNom ?? row.etablissementCode}
+                  {row.modeManuel && (
+                    <span className="ml-2 inline-flex items-center px-1.5 py-0.5 rounded text-xs font-semibold bg-amber-100 text-amber-700 border border-amber-200">
+                      Manuel
+                    </span>
+                  )}
+                </td>
                 {/* Colonne Base de répartition */}
                 <td className="px-4 py-2.5 text-right">
                   {editingCell?.code === row.etablissementCode && editingCell.col === 'base' ? (
@@ -691,18 +714,48 @@ function ClesRepartitionView({ annee, basesRepartitionRaw, isLoadingBases, isErr
                     </button>
                   )}
                 </td>
+                {/* Colonne Mode Manuel */}
+                <td className="px-4 py-2.5 text-center">
+                  <button
+                    onClick={() => toggleModeManuel(row)}
+                    disabled={setBaseRepartition.isPending}
+                    title={row.modeManuel
+                      ? 'Mode manuel activé — cliquer pour revenir au calcul prorata automatique'
+                      : 'Cliquer pour activer le mode tout manuel (montants OPEX saisis manuellement pour cet établissement)'}
+                    className={`relative inline-flex h-5 w-9 items-center rounded-full transition-colors focus:outline-none focus:ring-2 focus:ring-primary/30 disabled:opacity-50 ${
+                      row.modeManuel ? 'bg-amber-500' : 'bg-muted-foreground/30'
+                    }`}
+                  >
+                    <span
+                      className={`inline-block h-3.5 w-3.5 rounded-full bg-white shadow transition-transform ${
+                        row.modeManuel ? 'translate-x-4.5' : 'translate-x-0.5'
+                      }`}
+                    />
+                  </button>
+                </td>
               </tr>
             ))}
           </tbody>
           <tfoot>
             <tr className="bg-muted/40 border-t-2 border-border font-bold">
-              <td colSpan={2} className="px-4 py-3 text-sm font-semibold text-foreground">TOTAL — {basesRepartitionRaw.length} établissements</td>
+              <td colSpan={2} className="px-4 py-3 text-sm font-semibold text-foreground">TOTAL — {basesRepartitionRaw.length} établissements
+                {basesRepartitionRaw.filter(r => r.modeManuel).length > 0 && (
+                  <span className="ml-2 text-xs font-normal text-amber-600">
+                    ({basesRepartitionRaw.filter(r => r.modeManuel).length} en mode manuel)
+                  </span>
+                )}
+              </td>
               <td className="px-4 py-3 text-right text-sm font-bold text-foreground tabular-nums">
                 {new Intl.NumberFormat('fr-FR', { maximumFractionDigits: 0 }).format(totalBase)} €
               </td>
               <td className="px-4 py-3 text-right text-sm font-bold text-orange-600 tabular-nums">
                 {totalHep > 0 ? new Intl.NumberFormat('fr-FR', { maximumFractionDigits: 0 }).format(totalHep) + ' €' : '—'}
               </td>
+              <td className="px-4 py-3 text-center text-xs text-muted-foreground">
+                {basesRepartitionRaw.filter(r => r.modeManuel).length > 0
+                  ? `${basesRepartitionRaw.filter(r => r.modeManuel).length} actif${basesRepartitionRaw.filter(r => r.modeManuel).length > 1 ? 's' : ''}`
+                  : '—'}
+              </td>
             </tr>
           </tfoot>
         </table>
@@ -1043,12 +1096,14 @@ export default function DsiOpex() {
           nom: b.etablissementNom ?? b.etablissementCode,
           base_repartition: parseFloat(b.baseRepartition ?? '0') || 0,
           base_repartition_hep: parseFloat(b.baseRepartitionHep ?? '0') || 0,
+          modeManuel: b.modeManuel ?? false,
         }))
       : getOpexDataForAnnee(annee).etablissements.map(e => ({
           code: e.code,
           nom: e.nom,
           base_repartition: e.base_repartition,
           base_repartition_hep: 0, // JSON source n'a pas de base HEP
+          modeManuel: false,
         }));
 
     const totalBase = basesFromBdd.reduce((s, e) => s + e.base_repartition, 0);
@@ -1071,7 +1126,11 @@ export default function DsiOpex() {
            (ligne.libelleDetail ?? '').toLowerCase().includes('hep'));
         const ratioApplique = isHepPoste ? ratioHep : ratio;
         let montant: number;
-        if (isManuel && etabOverrides[ligne.libelle] !== undefined) {
+        if (etab.modeManuel) {
+          // Mode tout manuel : utiliser uniquement les montants saisis manuellement,
+          // sans aucun calcul prorata — si pas de saisie, le montant est 0
+          montant = etabOverrides[ligne.libelle] ?? 0;
+        } else if (isManuel && etabOverrides[ligne.libelle] !== undefined) {
           montant = etabOverrides[ligne.libelle];
         } else if (!isManuel && ligne.montant > 0) {
           montant = Math.round(ligne.montant * ratioApplique);
@@ -1707,12 +1766,21 @@ export default function DsiOpex() {
                       </tr>
                     </thead>
                     <tbody>
-                      {sortedEtabs.map((etab, idx) => (
-                        <tr key={etab.code} className={`border-b border-border/50 hover:bg-muted/20 transition-colors ${idx % 2 === 0 ? '' : 'bg-muted/5'}`}>
-                          <td className="px-3 py-2 whitespace-nowrap" style={{ position: 'sticky', left: 0, zIndex: 20, background: idx % 2 === 0 ? 'oklch(1 0 0)' : 'oklch(0.97 0.003 80)', boxShadow: '2px 0 4px -1px rgba(0,0,0,0.12)', width: '110px', minWidth: '110px', maxWidth: '110px' }}>
+                      {sortedEtabs.map((etab, idx) => {
+                        const rowBg = etab.modeManuel ? 'oklch(0.98 0.02 80)' : (idx % 2 === 0 ? 'oklch(1 0 0)' : 'oklch(0.97 0.003 80)');
+                        return (
+                        <tr key={etab.code} className={`border-b border-border/50 hover:bg-muted/20 transition-colors ${etab.modeManuel ? 'bg-amber-50/40' : idx % 2 === 0 ? '' : 'bg-muted/5'}`}>
+                          <td className="px-3 py-2 whitespace-nowrap" style={{ position: 'sticky', left: 0, zIndex: 20, background: rowBg, boxShadow: '2px 0 4px -1px rgba(0,0,0,0.12)', width: '110px', minWidth: '110px', maxWidth: '110px' }}>
                             <span className="font-mono bg-muted px-1.5 py-0.5 rounded text-muted-foreground">{etab.code}</span>
                           </td>
-                          <td className="px-3 py-2 font-medium text-foreground whitespace-nowrap overflow-hidden text-ellipsis" style={{ position: 'sticky', left: '110px', zIndex: 20, background: idx % 2 === 0 ? 'oklch(1 0 0)' : 'oklch(0.97 0.003 80)', boxShadow: '2px 0 8px -2px rgba(0,0,0,0.2)', width: '220px', minWidth: '220px', maxWidth: '220px' }} title={etab.nom}>{etab.nom}</td>
+                          <td className="px-3 py-2 font-medium text-foreground whitespace-nowrap overflow-hidden text-ellipsis" style={{ position: 'sticky', left: '110px', zIndex: 20, background: rowBg, boxShadow: '2px 0 8px -2px rgba(0,0,0,0.2)', width: '220px', minWidth: '220px', maxWidth: '220px' }} title={etab.nom}>
+                            {etab.nom}
+                            {etab.modeManuel && (
+                              <span className="ml-1.5 inline-flex items-center px-1 py-0.5 rounded text-[10px] font-semibold bg-amber-100 text-amber-700 border border-amber-200" title="Mode tout manuel activé — montants saisis manuellement, pas de calcul prorata">
+                                Manuel
+                              </span>
+                            )}
+                          </td>
                           {lignes.map(ligne => {
                             const isManuel = ligne.mode_ventilation === 'Manuel' || ligne.isCustom;
                             const montant = etab.montants[ligne.libelle] ?? 0;
@@ -1770,7 +1838,8 @@ export default function DsiOpex() {
                             </span>
                           </td>
                         </tr>
-                      ))}
+                        );
+                      })}
                     </tbody>
                     <tfoot>
                       <tr className="bg-muted/40 border-t-2 border-border">
diff --git a/drizzle/0003_tense_havok.sql b/drizzle/0003_tense_havok.sql
new file mode 100644
index 0000000..c609c23
--- /dev/null
+++ b/drizzle/0003_tense_havok.sql
@@ -0,0 +1,2 @@
+ALTER TABLE `opex_bases_repartition` ADD `modeManuel` boolean DEFAULT false NOT NULL;--> statement-breakpoint
+ALTER TABLE `opex_bases_repartition` ADD CONSTRAINT `opex_bases_repartition_annee_etab_idx` UNIQUE(`annee`,`etablissementCode`);
\ No newline at end of file
diff --git a/drizzle/meta/0003_snapshot.json b/drizzle/meta/0003_snapshot.json
new file mode 100644
index 0000000..f11224a
--- /dev/null
+++ b/drizzle/meta/0003_snapshot.json
@@ -0,0 +1,889 @@
+{
+  "version": "5",
+  "dialect": "mysql",
+  "id": "44abeed3-e7bf-47cd-a29c-59a27bf57f1a",
+  "prevId": "baff50d1-531e-4ba7-a82a-6f9c64aa1186",
+  "tables": {
+    "capex_lignes": {
+      "name": "capex_lignes",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "annee": {
+          "name": "annee",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "etablissementCode": {
+          "name": "etablissementCode",
+          "type": "varchar(50)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "cle": {
+          "name": "cle",
+          "type": "varchar(100)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "montant": {
+          "name": "montant",
+          "type": "decimal(12,2)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "createdAt": {
+          "name": "createdAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updatedAt": {
+          "name": "updatedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "capex_lignes_id": {
+          "name": "capex_lignes_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "etablissements": {
+      "name": "etablissements",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "code": {
+          "name": "code",
+          "type": "varchar(50)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "nom": {
+          "name": "nom",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "groupe": {
+          "name": "groupe",
+          "type": "varchar(100)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "ville": {
+          "name": "ville",
+          "type": "varchar(100)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "actif": {
+          "name": "actif",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": true
+        },
+        "createdAt": {
+          "name": "createdAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updatedAt": {
+          "name": "updatedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "etablissements_id": {
+          "name": "etablissements_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {
+        "etablissements_code_unique": {
+          "name": "etablissements_code_unique",
+          "columns": [
+            "code"
+          ]
+        }
+      },
+      "checkConstraint": {}
+    },
+    "inventaire_meta": {
+      "name": "inventaire_meta",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "annee": {
+          "name": "annee",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "filename": {
+          "name": "filename",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "dateImport": {
+          "name": "dateImport",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "nbEtablissements": {
+          "name": "nbEtablissements",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": 0
+        },
+        "nbFixes": {
+          "name": "nbFixes",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": 0
+        },
+        "nbPortables": {
+          "name": "nbPortables",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": 0
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "inventaire_meta_id": {
+          "name": "inventaire_meta_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {
+        "inventaire_meta_annee_unique": {
+          "name": "inventaire_meta_annee_unique",
+          "columns": [
+            "annee"
+          ]
+        }
+      },
+      "checkConstraint": {}
+    },
+    "inventaire_postes": {
+      "name": "inventaire_postes",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "annee": {
+          "name": "annee",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "etablissementCode": {
+          "name": "etablissementCode",
+          "type": "varchar(50)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "libelle": {
+          "name": "libelle",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "typePoste": {
+          "name": "typePoste",
+          "type": "enum('fixe','portable')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "dateRef": {
+          "name": "dateRef",
+          "type": "varchar(20)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "ageAns": {
+          "name": "ageAns",
+          "type": "decimal(5,2)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "modele": {
+          "name": "modele",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "fabricant": {
+          "name": "fabricant",
+          "type": "varchar(100)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "createdAt": {
+          "name": "createdAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "inventaire_postes_id": {
+          "name": "inventaire_postes_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "opex_bases_repartition": {
+      "name": "opex_bases_repartition",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "annee": {
+          "name": "annee",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "etablissementCode": {
+          "name": "etablissementCode",
+          "type": "varchar(50)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "etablissementNom": {
+          "name": "etablissementNom",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "baseRepartition": {
+          "name": "baseRepartition",
+          "type": "decimal(20,6)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "baseRepartitionHep": {
+          "name": "baseRepartitionHep",
+          "type": "decimal(20,6)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": "'0'"
+        },
+        "modeManuel": {
+          "name": "modeManuel",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        },
+        "createdAt": {
+          "name": "createdAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "opex_bases_repartition_annee_etab_idx": {
+          "name": "opex_bases_repartition_annee_etab_idx",
+          "columns": [
+            "annee",
+            "etablissementCode"
+          ],
+          "isUnique": true
+        }
+      },
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "opex_bases_repartition_id": {
+          "name": "opex_bases_repartition_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "opex_montants_etab": {
+      "name": "opex_montants_etab",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "annee": {
+          "name": "annee",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "etablissementCode": {
+          "name": "etablissementCode",
+          "type": "varchar(50)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "libellePoste": {
+          "name": "libellePoste",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "montant": {
+          "name": "montant",
+          "type": "decimal(12,2)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "createdAt": {
+          "name": "createdAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updatedAt": {
+          "name": "updatedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "opex_montants_etab_id": {
+          "name": "opex_montants_etab_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "opex_postes": {
+      "name": "opex_postes",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "annee": {
+          "name": "annee",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "colIdx": {
+          "name": "colIdx",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "libelle": {
+          "name": "libelle",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "libelleCourt": {
+          "name": "libelleCourt",
+          "type": "varchar(100)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "libelleDetail": {
+          "name": "libelleDetail",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "fournisseur": {
+          "name": "fournisseur",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "categorie": {
+          "name": "categorie",
+          "type": "varchar(100)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "type": {
+          "name": "type",
+          "type": "varchar(100)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "facturation": {
+          "name": "facturation",
+          "type": "varchar(100)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "modeVentilation": {
+          "name": "modeVentilation",
+          "type": "varchar(50)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": "'Prorata C 6'"
+        },
+        "compte": {
+          "name": "compte",
+          "type": "varchar(50)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "detail": {
+          "name": "detail",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "budgetN1": {
+          "name": "budgetN1",
+          "type": "decimal(12,2)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "montant": {
+          "name": "montant",
+          "type": "decimal(12,2)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "isCustom": {
+          "name": "isCustom",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": false
+        },
+        "createdAt": {
+          "name": "createdAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updatedAt": {
+          "name": "updatedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "opex_postes_id": {
+          "name": "opex_postes_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "opex_validated": {
+      "name": "opex_validated",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "annee": {
+          "name": "annee",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "validatedAt": {
+          "name": "validatedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "validatedBy": {
+          "name": "validatedBy",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "opex_validated_id": {
+          "name": "opex_validated_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {
+        "opex_validated_annee_unique": {
+          "name": "opex_validated_annee_unique",
+          "columns": [
+            "annee"
+          ]
+        }
+      },
+      "checkConstraint": {}
+    },
+    "parametres_app": {
+      "name": "parametres_app",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "cle": {
+          "name": "cle",
+          "type": "varchar(100)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "valeur": {
+          "name": "valeur",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "updatedAt": {
+          "name": "updatedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "parametres_app_id": {
+          "name": "parametres_app_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {
+        "parametres_app_cle_unique": {
+          "name": "parametres_app_cle_unique",
+          "columns": [
+            "cle"
+          ]
+        }
+      },
+      "checkConstraint": {}
+    },
+    "user_etablissements": {
+      "name": "user_etablissements",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "userId": {
+          "name": "userId",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "etablissementCode": {
+          "name": "etablissementCode",
+          "type": "varchar(50)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "user_etablissements_id": {
+          "name": "user_etablissements_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "users": {
+      "name": "users",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "login": {
+          "name": "login",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "email": {
+          "name": "email",
+          "type": "varchar(320)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "passwordHash": {
+          "name": "passwordHash",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "firstName": {
+          "name": "firstName",
+          "type": "varchar(100)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "lastName": {
+          "name": "lastName",
+          "type": "varchar(100)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "role": {
+          "name": "role",
+          "type": "enum('admin','standard','readonly')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'standard'"
+        },
+        "isActive": {
+          "name": "isActive",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": true
+        },
+        "createdAt": {
+          "name": "createdAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updatedAt": {
+          "name": "updatedAt",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        },
+        "lastSignedIn": {
+          "name": "lastSignedIn",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "users_id": {
+          "name": "users_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {
+        "users_login_unique": {
+          "name": "users_login_unique",
+          "columns": [
+            "login"
+          ]
+        }
+      },
+      "checkConstraint": {}
+    }
+  },
+  "views": {},
+  "_meta": {
+    "schemas": {},
+    "tables": {},
+    "columns": {}
+  },
+  "internal": {
+    "tables": {},
+    "indexes": {}
+  }
+}
\ No newline at end of file
diff --git a/drizzle/meta/_journal.json b/drizzle/meta/_journal.json
index 82dff59..3f1442d 100644
--- a/drizzle/meta/_journal.json
+++ b/drizzle/meta/_journal.json
@@ -22,6 +22,13 @@
       "when": 1781161698458,
       "tag": "0002_faithful_famine",
       "breakpoints": true
+    },
+    {
+      "idx": 3,
+      "version": "5",
+      "when": 1781163262493,
+      "tag": "0003_tense_havok",
+      "breakpoints": true
     }
   ]
 }
\ No newline at end of file
diff --git a/drizzle/schema.ts b/drizzle/schema.ts
index f57211c..d37d82f 100644
--- a/drizzle/schema.ts
+++ b/drizzle/schema.ts
@@ -6,6 +6,7 @@ import {
   mysqlTable,
   text,
   timestamp,
+  uniqueIndex,
   varchar,
 } from "drizzle-orm/mysql-core";
 
@@ -174,8 +175,12 @@ export const opexBasesRepartition = mysqlTable("opex_bases_repartition", {
   baseRepartition: decimal("baseRepartition", { precision: 20, scale: 6 }).notNull(),
   /** Charges classe 6 — base de répartition pôle HEP uniquement (0 pour les étblissements hors HEP) */
   baseRepartitionHep: decimal("baseRepartitionHep", { precision: 20, scale: 6 }).default("0"),
+  /** Si true, tous les montants OPEX de cet établissement sont saisis manuellement (pas de calcul prorata) */
+  modeManuel: boolean("modeManuel").default(false).notNull(),
   createdAt: timestamp("createdAt").defaultNow().notNull(),
-});
+}, (t) => ({
+  uniqAnneeEtab: uniqueIndex("opex_bases_repartition_annee_etab_idx").on(t.annee, t.etablissementCode),
+}));
 
 export type OpexBaseRepartition = typeof opexBasesRepartition.$inferSelect;
 export type InsertOpexBaseRepartition = typeof opexBasesRepartition.$inferInsert;
diff --git a/server/db.ts b/server/db.ts
index 39d072a..9611241 100644
--- a/server/db.ts
+++ b/server/db.ts
@@ -344,6 +344,7 @@ export async function upsertOpexBaseRepartition(input: {
   etablissementNom?: string | null;
   baseRepartition: number;
   baseRepartitionHep?: number;
+  modeManuel?: boolean;
 }) {
   const db = await getDb();
   if (!db) throw new Error("Database not available");
@@ -355,12 +356,14 @@ export async function upsertOpexBaseRepartition(input: {
       etablissementNom: input.etablissementNom ?? null,
       baseRepartition: String(input.baseRepartition),
       baseRepartitionHep: String(input.baseRepartitionHep ?? 0),
+      modeManuel: input.modeManuel ?? false,
     })
     .onDuplicateKeyUpdate({
       set: {
         baseRepartition: String(input.baseRepartition),
         baseRepartitionHep: String(input.baseRepartitionHep ?? 0),
         etablissementNom: input.etablissementNom ?? null,
+        modeManuel: input.modeManuel ?? false,
       },
     });
 }
diff --git a/server/routers.ts b/server/routers.ts
index 3b2c9c2..396207a 100644
--- a/server/routers.ts
+++ b/server/routers.ts
@@ -187,6 +187,7 @@ export const appRouter = router({
         etablissementNom: z.string().optional().nullable(),
         baseRepartition: z.number(),
         baseRepartitionHep: z.number().optional().default(0),
+        modeManuel: z.boolean().optional().default(false),
       }))
       .mutation(async ({ input }) => { await db.upsertOpexBaseRepartition(input); return { success: true }; }),
 
diff --git a/todo.md b/todo.md
index 4ad568f..df9a26d 100644
--- a/todo.md
+++ b/todo.md
@@ -56,3 +56,8 @@
 
 - [x] Ajouter un vrai loading/error state pour l'onglet « Clés de répartition » basé sur la requête `opex.getBasesRepartition`
 - [x] Rendre l'import des clés de répartition compatible avec le classeur source réel : détection intelligente de la bonne feuille (mots-clés OPEX/DSI/répartition/base), normalisation des accents, validation des colonnes attendues avec message d'erreur détaillé
+
+## Bugs et nouvelles fonctionnalités (post-checkpoint cfeb5196)
+
+- [x] Bug : doublon de ligne dans le tableau Clés de répartition au clic (mutation setBaseRepartition provoque un double rendu)
+- [x] Fonctionnalité : mode "tout manuel" par établissement dans l'onglet Clés de répartition (toutes les colonnes OPEX de cet établissement saisies manuellement, ignorant le calcul prorata)