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Il n'est\n// JAMAIS vendu par take-profit ni stop suiveur — seul le kill-switch global le\n// liquide. Acheté au marché (fill garanti), déployé progressivement (DCA) pour\n// ne pas tout acheter au même instant sur un pic.\n//\n// Traçabilité stricte : le volume \"cœur\" est stocké séparément (clé core_*).\n// Le système tactique lit balance_Kraken - volume_cœur, donc les deux ne se\n// confondent jamais (c'est ce mélange qui avait causé le bug du dépôt fantôme).\nimport { CONFIG, PAIRS, type PairConfig } from \"../config.ts\";\nimport { addMarketOrder, type Ticker } from \"./kraken.ts\";\nimport { delState, getState, logEvent, logTrade, setState } from \"./db.ts\";\n\nexport interface CoreHolding {\n volume: number;\n cost: number; // coût d'acquisition cumulé (EUR, frais inclus)\n}\n\nconst coreKey = (mode: string, pc: PairConfig) => `core_${mode}_${pc.pair}`;\n\nexport async function readCore(mode: string, pc: PairConfig): Promise {\n const raw = await getState(coreKey(mode, pc));\n return raw ? (JSON.parse(raw) as CoreHolding) : { volume: 0, cost: 0 };\n}\n\nasync function writeCore(mode: string, pc: PairConfig, h: CoreHolding): Promise {\n await setState(coreKey(mode, pc), JSON.stringify(h));\n}\n\n// Ajoute du volume au cœur (dépôt adopté en buy-and-hold, ou renfort).\nexport async function addToCore(mode: string, pc: PairConfig, volume: number, cost: number): Promise {\n const h = await readCore(mode, pc);\n await writeCore(mode, pc, { volume: h.volume + volume, cost: h.cost + cost });\n}\n\nconst fmt = (x: number, d = 2) => x.toFixed(d);\n\ntype MarketInfo = Map;\n\n// Valeur totale du cœur (EUR) au prix courant, et détail par paire.\nexport async function coreSummary(\n mode: string,\n market: MarketInfo,\n): Promise<{ total: number; cost: number; byPair: Map }> {\n const byPair = new Map();\n let total = 0, cost = 0;\n for (const pc of PAIRS) {\n const h = await readCore(mode, pc);\n const value = h.volume * (market.get(pc.pair)?.ticker.last ?? 0);\n total += value;\n cost += h.cost;\n byPair.set(pc.pair, { vol: h.volume, value, cost: h.cost });\n }\n return { total, cost, byPair };\n}\n\n// Maintient le cœur à CORE_TARGET_PCT de l'équité (achats marché, DCA).\n// Retourne le cash EUR dépensé ce cycle (pour l'accounting du satellite).\nexport async function maintainCore(\n mode: \"live\" | \"paper\",\n equity: number,\n cashAvailable: number,\n market: MarketInfo,\n): Promise {\n const { total: coreVal } = await coreSummary(mode, market);\n const target = equity * CONFIG.CORE_TARGET_PCT;\n\n // Déjà dans la bande de tolérance : rien à faire (évite le sur-trading).\n if (coreVal >= target * (1 - CONFIG.CORE_REBALANCE_BAND)) return 0;\n\n const gap = target - coreVal;\n const budget = Math.min(gap, equity * CONFIG.CORE_DCA_PER_CYCLE, cashAvailable);\n if (budget < 1) return 0;\n\n // Cibler les paires les plus sous-pondérées (cible par paire = target × allocPct).\n const perPair: { pc: PairConfig; gap: number }[] = [];\n for (const pc of PAIRS) {\n const h = await readCore(mode, pc);\n const value = h.volume * (market.get(pc.pair)?.ticker.last ?? 0);\n perPair.push({ pc, gap: Math.max(0, target * pc.allocPct - value) });\n }\n perPair.sort((a, b) => b.gap - a.gap);\n const picks = perPair.filter((x) => x.gap > 0).slice(0, 2); // 2 paires/cycle max\n if (picks.length === 0) return 0;\n\n let spent = 0;\n const per = budget / picks.length;\n for (const { pc } of picks) {\n const m = market.get(pc.pair)!;\n const price = m.ticker.ask; // achat marché ≈ ask\n const spend = Math.min(per, budget - spent);\n const f = 10 ** m.info.lotDecimals;\n const volume = Math.floor((spend / price) * f) / f;\n if (volume < m.info.ordermin || volume * price < m.info.costmin) continue;\n const fee = volume * price * CONFIG.TAKER_FEE;\n if (mode === \"live\") {\n try {\n await addMarketOrder(pc.pair, \"buy\", String(volume));\n } catch (e) {\n await logEvent(\"error\", `${pc.label}: achat cœur échoué: ${e}`);\n continue;\n }\n } else {\n const cash = Number((await getState(\"paper_eur\")) ?? 0);\n await setState(\"paper_eur\", String(cash - volume * price - fee));\n }\n await addToCore(mode, pc, volume, volume * price + fee);\n await logTrade(mode, pc.label, \"buy\", price, volume, fee, \"cœur (buy & hold)\");\n await logEvent(\"info\", `${pc.label}: cœur +${volume} @ ~${price} € (${fmt(spend, 0)} €)`);\n spent += volume * price + fee;\n }\n\n // Accumulation silencieuse : pas de notification Telegram intra-journée,\n // tout est résumé dans le récap du soir (20h).\n if (spent > 0) {\n const { total: newCore } = await coreSummary(mode, market);\n await logEvent(\"info\", `Cœur renforcé +${fmt(spent)} € → ${fmt(newCore)} € (cible ${fmt(target)} €)`);\n }\n return spent;\n}\n\n// Liquide tout le cœur au marché (kill-switch global uniquement).\nexport async function liquidateCore(mode: \"live\" | \"paper\", market: Map): Promise {\n for (const pc of PAIRS) {\n const h = await readCore(mode, pc);\n if (h.volume > 0) {\n const bid = market.get(pc.pair)?.ticker.bid ?? 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