diff --git a/docs/mesures/carte-decisions.json b/docs/mesures/carte-decisions.json
new file mode 100644
index 0000000..88b042f
--- /dev/null
+++ b/docs/mesures/carte-decisions.json
@@ -0,0 +1,554 @@
+{
+  "genere": "2026-09-12T05:13:34.948Z",
+  "carte": {
+    "switch.edf_general_ok_switch": {
+      "libelle": "Contacteur reseau EDF",
+      "ecrivains": [
+        {
+          "famille": "n8n",
+          "nom": "Victron - Battery / Grid Hysteresis Fix V1",
+          "id": "7iIlu7LLTW7TZA8o",
+          "services": [
+            "turn_on",
+            "turn_off"
+          ],
+          "desactive": false
+        },
+        {
+          "famille": "n8n",
+          "nom": "HA Snapshot EVCS Surplus Controller V2.6",
+          "id": "ATswvGfG4KJUls0K",
+          "services": [
+            "turn_on",
+            "set_value",
+            "turn_off"
+          ],
+          "desactive": false
+        },
+        {
+          "famille": "HA",
+          "nom": "automations.yaml",
+          "services": [
+            "turn_on",
+            "turn_off"
+          ],
+          "desactive": false
+        },
+        {
+          "famille": "HA",
+          "nom": "scripts.yaml",
+          "services": [
+            "turn_on",
+            "turn_off",
+            "set_value"
+          ],
+          "desactive": false
+        }
+      ],
+      "lecteurs": [
+        "n8n:SDB Climate & Surplus Manager V2.2",
+        "n8n:Water Heater Advisor V2.3",
+        "n8n:Victron - Garage Thermal Surplus Manager V2.2",
+        "n8n:EVCS Energy Balance V1",
+        "n8n:Victron - Flexible Load Advisor V1",
+        "n8n:Victron - Auto Charge Manager V1.2",
+        "n8n:EVCS Advisor Shadow V1",
+        "n8n:Water Heater Advisor ECS 6 Nodes + Build + Execute"
+      ]
+    },
+    "number.gx_device_ac_power_setpoint": {
+      "libelle": "Consigne de puissance reseau",
+      "ecrivains": [
+        {
+          "famille": "n8n",
+          "nom": "HA Snapshot EVCS Surplus Controller V2.6",
+          "id": "ATswvGfG4KJUls0K",
+          "services": [
+            "turn_on",
+            "set_value",
+            "turn_off"
+          ],
+          "desactive": false
+        }
+      ],
+      "lecteurs": [
+        "n8n:EVCS Advisor Shadow V1"
+      ]
+    },
+    "switch.victron_evcs_charging": {
+      "libelle": "Charge de la borne",
+      "ecrivains": [
+        {
+          "famille": "n8n",
+          "nom": "HA Snapshot EVCS Surplus Controller V2.6",
+          "id": "ATswvGfG4KJUls0K",
+          "services": [
+            "turn_off",
+            "turn_on",
+            "set_current"
+          ],
+          "desactive": false
+        }
+      ],
+      "lecteurs": [
+        "n8n:Victron - Battery / Grid Hysteresis Fix V1",
+        "n8n:EVCS Advisor Shadow V1"
+      ]
+    },
+    "number.victron_evcs_set_current_command": {
+      "libelle": "Courant de la borne",
+      "ecrivains": [
+        {
+          "famille": "n8n",
+          "nom": "HA Snapshot EVCS Surplus Controller V2.6",
+          "id": "ATswvGfG4KJUls0K",
+          "services": [
+            "turn_on",
+            "turn_off",
+            "set_current",
+            "set_value"
+          ],
+          "desactive": false
+        },
+        {
+          "famille": "HA",
+          "nom": "scripts.yaml",
+          "services": [
+            "set_value",
+            "set_current"
+          ],
+          "desactive": false
+        }
+      ],
+      "lecteurs": []
+    },
+    "input_boolean.victron_grid_hysteresis_latch": {
+      "libelle": "Verrou hysteresis",
+      "ecrivains": [
+        {
+          "famille": "n8n",
+          "nom": "Victron - Battery / Grid Hysteresis Fix V1",
+          "id": "7iIlu7LLTW7TZA8o",
+          "services": [
+            "set_value",
+            "turn_on",
+            "turn_off"
+          ],
+          "desactive": false
+        },
+        {
+          "famille": "HA",
+          "nom": "scripts.yaml",
+          "services": [
+            "turn_off",
+            "set_value",
+            "turn_on"
+          ],
+          "desactive": false
+        }
+      ],
+      "lecteurs": [
+        "n8n:EVCS Advisor Shadow V1"
+      ]
+    },
+    "input_boolean.victron_evcs_night_grid_takeover_needed": {
+      "libelle": "Reprise reseau nuit",
+      "ecrivains": [
+        {
+          "famille": "n8n",
+          "nom": "HA Snapshot EVCS Surplus Controller V2.6",
+          "id": "ATswvGfG4KJUls0K",
+          "services": [
+            "turn_on",
+            "turn_off"
+          ],
+          "desactive": false
+        }
+      ],
+      "lecteurs": [
+        "n8n:Victron - Battery / Grid Hysteresis Fix V1",
+        "n8n:Victron - Auto Charge Manager V1.2",
+        "n8n:EVCS Advisor Shadow V1"
+      ]
+    },
+    "number.gx_device_ess_min_soc_limit": {
+      "libelle": "SOC minimal de l ESS",
+      "ecrivains": [],
+      "lecteurs": []
+    }
+  },
+  "seuilsSoc": {
+    "20": [
+      {
+        "valeur": 20,
+        "extrait": "SOC <= 20)",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 20,
+        "extrait": "SOC <= 20)",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 20,
+        "extrait": "soc < 20 ",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      },
+      {
+        "valeur": 20,
+        "extrait": "soc < 20 ",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      }
+    ],
+    "22": [
+      {
+        "valeur": 22,
+        "extrait": "soc < 22)",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      },
+      {
+        "valeur": 22,
+        "extrait": "SOC < 22%",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      },
+      {
+        "valeur": 22,
+        "extrait": "soc < 22)",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      },
+      {
+        "valeur": 22,
+        "extrait": "SOC < 22%",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      },
+      {
+        "valeur": 22,
+        "extrait": "SoC < 22%",
+        "source": "HA:automations.yaml"
+      },
+      {
+        "valeur": 22,
+        "extrait": "SoC < 22%",
+        "source": "HA:automations.yaml"
+      },
+      {
+        "valeur": 22,
+        "extrait": "below: 22",
+        "source": "HA:automations.yaml"
+      },
+      {
+        "valeur": 22,
+        "extrait": "below: 22",
+        "source": "HA:automations.yaml"
+      }
+    ],
+    "25": [
+      {
+        "valeur": 25,
+        "extrait": "soc > 25 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 25,
+        "extrait": "soc > 25 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      }
+    ],
+    "35": [
+      {
+        "valeur": 35,
+        "extrait": "SOC > 35%",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 35,
+        "extrait": "soc <= 35;",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 35,
+        "extrait": "SOC > 35%",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 35,
+        "extrait": "soc <= 35;",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 35,
+        "extrait": "SoC > 35%",
+        "source": "HA:automations.yaml"
+      },
+      {
+        "valeur": 35,
+        "extrait": "above: 35",
+        "source": "HA:automations.yaml"
+      }
+    ],
+    "40": [
+      {
+        "valeur": 40,
+        "extrait": "soc > 40 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 40,
+        "extrait": "soc >= 40 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 40,
+        "extrait": "soc >= 40 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 40,
+        "extrait": "soc > 40 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 40,
+        "extrait": "soc >= 40 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 40,
+        "extrait": "soc >= 40 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      }
+    ],
+    "60": [
+      {
+        "valeur": 60,
+        "extrait": "soc > 60 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 60,
+        "extrait": "soc >= 60 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 60,
+        "extrait": "soc >= 60 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 60,
+        "extrait": "soc > 60 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 60,
+        "extrait": "soc >= 60 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 60,
+        "extrait": "soc >= 60 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      }
+    ],
+    "80": [
+      {
+        "valeur": 80,
+        "extrait": "soc > 80 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 80,
+        "extrait": "soc >= 80 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 80,
+        "extrait": "soc >= 80 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 80,
+        "extrait": "soc >= 80 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 80,
+        "extrait": "soc > 80 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 80,
+        "extrait": "soc >= 80 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 80,
+        "extrait": "soc >= 80 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 80,
+        "extrait": "soc >= 80 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 80,
+        "extrait": "soc < 80)",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      },
+      {
+        "valeur": 80,
+        "extrait": "soc < 80)",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      }
+    ],
+    "85": [
+      {
+        "valeur": 85,
+        "extrait": "soc >= 85 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 85,
+        "extrait": "soc >= 85 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 85,
+        "extrait": "soc < 85 ",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      },
+      {
+        "valeur": 85,
+        "extrait": "soc < 85 ",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      }
+    ],
+    "90": [
+      {
+        "valeur": 90,
+        "extrait": "soc > 90 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 90,
+        "extrait": "SOC > 90,",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 90,
+        "extrait": "soc >= 90 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 90,
+        "extrait": "soc >= 90 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 90,
+        "extrait": "SOC >= 90\\",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 90,
+        "extrait": "soc > 90 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 90,
+        "extrait": "SOC > 90,",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 90,
+        "extrait": "soc >= 90 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 90,
+        "extrait": "soc >= 90 ",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 90,
+        "extrait": "SOC >= 90\\",
+        "source": "n8n:HA Snapshot EVCS Surplus Controller V2.6"
+      },
+      {
+        "valeur": 90,
+        "extrait": "soc < 90)",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      },
+      {
+        "valeur": 90,
+        "extrait": "soc >= 90)",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      },
+      {
+        "valeur": 90,
+        "extrait": "soc >= 90 ",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      },
+      {
+        "valeur": 90,
+        "extrait": "soc < 90)",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      },
+      {
+        "valeur": 90,
+        "extrait": "soc >= 90)",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      },
+      {
+        "valeur": 90,
+        "extrait": "soc >= 90 ",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      }
+    ],
+    "95": [
+      {
+        "valeur": 95,
+        "extrait": "soc < 95)",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      },
+      {
+        "valeur": 95,
+        "extrait": "soc < 95 ",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      },
+      {
+        "valeur": 95,
+        "extrait": "soc < 95 ",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      },
+      {
+        "valeur": 95,
+        "extrait": "soc < 95)",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      },
+      {
+        "valeur": 95,
+        "extrait": "soc < 95 ",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      },
+      {
+        "valeur": 95,
+        "extrait": "soc < 95 ",
+        "source": "n8n:Victron - Auto Charge Manager V1.2"
+      }
+    ],
+    "100": [
+      {
+        "valeur": 100,
+        "extrait": "SocAtStartPct <= 100,",
+        "source": "n8n:EVCS Energy Balance V1"
+      },
+      {
+        "valeur": 100,
+        "extrait": "SocAtStartPct <= 100,",
+        "source": "n8n:EVCS Energy Balance V1"
+      }
+    ]
+  }
+}
\ No newline at end of file
diff --git a/tools/carte-decisions.mjs b/tools/carte-decisions.mjs
new file mode 100644
index 0000000..1262f99
--- /dev/null
+++ b/tools/carte-decisions.mjs
@@ -0,0 +1,160 @@
+#!/usr/bin/env node
+// CARTE DES DECISIONS — qui ecrit sur quoi, et avec quels seuils figes.
+//
+// Ce que le 12/09 a montre : cinq automates ecrivent sur le contacteur reseau,
+// chacun localement correct, aucun ne voit les autres, et personne n avait la
+// liste. Une automatisation Home Assistant coupait a 35 % de SOC pendant que le
+// bilan energetique demandait 42,8 % — le conflit a dure sept mois sans etre vu.
+//
+// Cette carte est GENEREE depuis les sources, jamais tenue a la main : une carte
+// maintenue a la main pourrit, et c est precisement ce qu on veut eviter.
+//
+//   node tools/carte-decisions.mjs            carte + ecart depuis la derniere fois
+//   node tools/carte-decisions.mjs --json     sortie machine (entree du conseiller)
+import fs from 'fs';
+import os from 'os';
+import path from 'path';
+
+const HA = '/mnt/ARCH3/docker/HA';
+const INSTANTANE = 'docs/mesures/carte-decisions.json';
+
+// Actionneurs dont une ecriture concurrente a une consequence physique.
+const ACTIONNEURS = [
+  ['switch.edf_general_ok_switch', 'Contacteur reseau EDF'],
+  ['number.gx_device_ac_power_setpoint', 'Consigne de puissance reseau'],
+  ['switch.victron_evcs_charging', 'Charge de la borne'],
+  ['number.victron_evcs_set_current_command', 'Courant de la borne'],
+  ['input_boolean.victron_grid_hysteresis_latch', 'Verrou hysteresis'],
+  ['input_boolean.victron_evcs_night_grid_takeover_needed', 'Reprise reseau nuit'],
+  ['number.gx_device_ess_min_soc_limit', 'SOC minimal de l ESS'],
+];
+
+function cleApi() {
+  const p = path.join(os.homedir(), '.config/opencode/opencode.json');
+  const c = JSON.parse(fs.readFileSync(p, 'utf8'));
+  const e = c?.mcp?.['n8n-mcp']?.environment || {};
+  return { url: (e.N8N_API_URL || '').replace(/\/api\/v1\/?$/, ''), key: e.N8N_API_KEY };
+}
+
+// Une ECRITURE, pas une lecture : l entite apparait pres d un appel de service.
+function ecrit(texte, entite) {
+  const i = texte.indexOf(entite);
+  if (i === -1) return null;
+  const services = [];
+  let p = 0;
+  while (true) {
+    const j = texte.indexOf(entite, p);
+    if (j === -1) break;
+    const autour = texte.slice(Math.max(0, j - 400), j + 400);
+    for (const m of autour.matchAll(/(turn_on|turn_off|set_value|toggle|set_current)/g)) services.push(m[1]);
+    p = j + 1;
+  }
+  return services.length ? [...new Set(services)] : null;
+}
+
+// Seuils numeriques compares a un SOC : la famille de valeurs qui a produit
+// l incident. On les remonte tous, avec leur emplacement.
+function seuilsSoc(texte, source) {
+  const trouves = [];
+  const motifs = [
+    /soc\w*\s*(?:<=?|>=?|===?)\s*(\d{1,3})(?:\D|$)/gi,
+    /(\d{1,3})\s*(?:<=?|>=?)\s*\w*soc/gi,
+    /\babove:\s*(\d{1,3})\b/gi,
+    /\bbelow:\s*(\d{1,3})\b/gi,
+  ];
+  for (const re of motifs) {
+    for (const m of texte.matchAll(re)) {
+      const v = Number(m[1]);
+      if (v >= 5 && v <= 100) trouves.push({ valeur: v, extrait: m[0].replace(/\s+/g, ' ').slice(0, 60), source });
+    }
+  }
+  return trouves;
+}
+
+const sources = [];
+
+// ── n8n ───────────────────────────────────────────────────────────────
+const { url, key } = cleApi();
+const r = await fetch(`${url}/api/v1/workflows?limit=100&active=true`, { headers: { 'X-N8N-API-KEY': key } });
+for (const w of (await r.json()).data) {
+  sources.push({ famille: 'n8n', nom: w.name, id: w.id, texte: JSON.stringify(w) });
+}
+
+// ── Home Assistant ────────────────────────────────────────────────────
+for (const f of ['automations.yaml', 'scripts.yaml']) {
+  const p = path.join(HA, f);
+  if (fs.existsSync(p)) sources.push({ famille: 'HA', nom: f, texte: fs.readFileSync(p, 'utf8') });
+}
+const paquets = path.join(HA, 'packages');
+if (fs.existsSync(paquets)) {
+  for (const f of fs.readdirSync(paquets).filter(x => x.endsWith('.yaml'))) {
+    sources.push({ famille: 'HA', nom: `packages/${f}`, texte: fs.readFileSync(path.join(paquets, f), 'utf8') });
+  }
+}
+
+// ── Carte ─────────────────────────────────────────────────────────────
+const carte = {};
+for (const [entite, libelle] of ACTIONNEURS) {
+  carte[entite] = { libelle, ecrivains: [], lecteurs: [] };
+  for (const s of sources) {
+    if (!s.texte.includes(entite)) continue;
+    const services = ecrit(s.texte, entite);
+    // Un commentaire de desactivation ne compte pas comme un ecrivain.
+    const desactive = /#\s*(DESACTIVEE|DISABLED)/i.test(s.texte) && s.famille === 'HA';
+    if (services) carte[entite].ecrivains.push({ famille: s.famille, nom: s.nom, id: s.id, services, desactive });
+    else carte[entite].lecteurs.push(`${s.famille}:${s.nom}`);
+  }
+}
+
+const seuils = [];
+for (const s of sources) seuils.push(...seuilsSoc(s.texte, `${s.famille}:${s.nom}`));
+const parValeur = {};
+for (const t of seuils) (parValeur[t.valeur] ||= []).push(t);
+
+const resultat = { genere: new Date().toISOString(), carte, seuilsSoc: parValeur };
+
+if (process.argv.includes('--json')) {
+  console.log(JSON.stringify(resultat, null, 2));
+} else {
+  console.log('═══ QUI ECRIT SUR QUOI ═══\n');
+  for (const [entite, d] of Object.entries(carte)) {
+    const actifs = d.ecrivains.filter(e => !e.desactive);
+    console.log(`${d.libelle}`);
+    console.log(`   ${entite}`);
+    if (!actifs.length) console.log('   (aucun ecrivain detecte)');
+    for (const e of actifs) {
+      console.log(`   ✎ ${e.famille.padEnd(4)} ${e.nom}${e.id ? ` (${e.id})` : ''}  [${e.services.join(', ')}]`);
+    }
+    for (const e of d.ecrivains.filter(x => x.desactive)) {
+      console.log(`   ⊘ ${e.famille.padEnd(4)} ${e.nom} — desactive`);
+    }
+    if (actifs.length > 1) console.log(`   ⚠️  ${actifs.length} ECRIVAINS CONCURRENTS`);
+    console.log(`   ${d.lecteurs.length} lecteur(s)\n`);
+  }
+  console.log('═══ SEUILS DE SOC FIGES ═══\n');
+  for (const v of Object.keys(parValeur).map(Number).sort((a, b) => a - b)) {
+    const t = parValeur[v];
+    const oú = [...new Set(t.map(x => x.source))];
+    console.log(`  ${String(v).padStart(3)} %  ×${String(t.length).padStart(2)}  ${oú.slice(0, 3).join(', ')}${oú.length > 3 ? ` +${oú.length - 3}` : ''}`);
+  }
+}
+
+// ── Ecart depuis la derniere fois : c est ca, la trace des evolutions ──
+if (!process.argv.includes('--json')) {
+  if (fs.existsSync(INSTANTANE)) {
+    const av = JSON.parse(fs.readFileSync(INSTANTANE, 'utf8'));
+    const cle = c => Object.entries(c.carte).flatMap(([e, d]) =>
+      d.ecrivains.filter(x => !x.desactive).map(x => `${e} <- ${x.famille}:${x.nom}`));
+    const avant = new Set(cle(av)), apres = new Set(cle(resultat));
+    const nouveaux = [...apres].filter(x => !avant.has(x));
+    const partis = [...avant].filter(x => !apres.has(x));
+    console.log(`\n═══ ECART DEPUIS ${av.genere.slice(0, 16).replace('T', ' ')} ═══`);
+    if (!nouveaux.length && !partis.length) console.log('  aucun changement d ecrivain');
+    for (const x of nouveaux) console.log(`  + ${x}`);
+    for (const x of partis) console.log(`  − ${x}`);
+  } else {
+    console.log('\n(premier instantane — l ecart sera affiche aux executions suivantes)');
+  }
+}
+fs.mkdirSync(path.dirname(INSTANTANE), { recursive: true });
+fs.writeFileSync(INSTANTANE, JSON.stringify(resultat, null, 2));