fix: endurance regen 6min→3min dans combat/forge/craft + potions d'énergie

Bug: combat/forge/craft calculaient la regen à 1pt/6min (ancien) alors que
character.service utilisait 1pt/3min (nouveau). Le joueur voyait 8 endurance
dans le HUD mais le backend refusait le combat avec 4.

Potions d'énergie: Potion (30 endurance, 20 or) + Grande (60 endurance, 45 or).
Consommable instantané via la boutique — le joueur peut acheter du temps de jeu.

frontend/src/pages/ShopPage.tsx

@@ -1,7 +1,7 @@
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
 import { characterApi } from '../api/endpoints';
 import { api } from '../api/client';
-import { Coins, ShoppingBag, Sword, Shield, Heart } from 'lucide-react';
+import { Coins, ShoppingBag, Sword, Shield, Heart, Zap } from 'lucide-react';
 
 const RARITY_COLORS: Record<string, string> = {
   common: '#9ca3af',
@@ -58,7 +58,10 @@ function ShopItemCard({ item, onBuy, buying }: { item: ShopItem; onBuy: () => vo
           <div style={{ display: 'flex', gap: 12, fontSize: 11, color: '#6b7a99' }}>
             {item.attackBonus > 0 && <span style={{ display: 'flex', alignItems: 'center', gap: 3 }}><Sword size={10} color="#f4c94e" /> +{item.attackBonus} ATK</span>}
             {item.defenseBonus > 0 && <span style={{ display: 'flex', alignItems: 'center', gap: 3 }}><Shield size={10} color="#5ba4f5" /> +{item.defenseBonus} DEF</span>}
-            {item.type === 'consumable' && <span style={{ display: 'flex', alignItems: 'center', gap: 3 }}><Heart size={10} color="#e84040" /> +50% PV</span>}
+            {item.type === 'consumable' && (item as any).forceBonus > 0
+              ? <span style={{ display: 'flex', alignItems: 'center', gap: 3 }}><Zap size={10} color="#5ba4f5" /> +{(item as any).forceBonus} endurance</span>
+              : item.type === 'consumable' && <span style={{ display: 'flex', alignItems: 'center', gap: 3 }}><Heart size={10} color="#e84040" /> +50% PV</span>
+            }
             {item.minLevel > 1 && <span>Niv. {item.minLevel}+</span>}
           </div>
         </div>
@@ -131,8 +134,10 @@ export function ShopPage() {
 
       {buyMut.isSuccess && (
         <div className="card card-gold" style={{ marginBottom: '1rem', padding: '0.5rem 1rem', fontSize: 13, textAlign: 'center' }}>
-          {(buyMut.data as any)?.type === 'consumable'
+          {(buyMut.data as any)?.effectType === 'endurance'
-            ? `🧪 ${(buyMut.data as any)?.item} utilisé ! +${(buyMut.data as any)?.effect?.healed} PV`
+            ? `⚡ ${(buyMut.data as any)?.item} — +${(buyMut.data as any)?.effect?.restored} endurance`
+            : (buyMut.data as any)?.effectType === 'hp'
+            ? `🧪 ${(buyMut.data as any)?.item} — +${(buyMut.data as any)?.effect?.healed} PV`
             : `✅ ${(buyMut.data as any)?.item} acheté ! (-${(buyMut.data as any)?.goldSpent} or)`
           }
         </div>

src/combat/combat.service.ts

@@ -57,7 +57,7 @@ export class CombatService {
 
       // Calculer l'endurance actuelle (lazy pattern)
       const elapsedMinutes = (Date.now() - character.lastEnduranceTs.getTime()) / 60_000;
-      const recharge = Math.floor(elapsedMinutes / 6);
+      const recharge = Math.floor(elapsedMinutes / 3);
       const enduranceCurrent = Math.min(character.enduranceSaved + recharge, character.enduranceMax);
 
       if (enduranceCurrent < COMBAT_ENDURANCE_COST) {

src/craft/craft.service.ts

@@ -40,7 +40,7 @@ export class CraftService {
 
     // Calculer endurance actuelle (lazy pattern)
     const elapsedMinutes = (Date.now() - char.lastEnduranceTs.getTime()) / 60_000;
-    const recharge = Math.floor(elapsedMinutes / 6);
+    const recharge = Math.floor(elapsedMinutes / 3);
     const enduranceCurrent = Math.min(char.enduranceSaved + recharge, char.enduranceMax);
 
     if (enduranceCurrent < recipe.enduranceCost) {

src/database/zones-seed.ts

@@ -47,8 +47,11 @@ const ITEMS = [
   { name: 'Armure du Pharaon',  type: 'armor',  rarity: 'epic', attackBonus: 0, defenseBonus: 18, buyPrice: 1300, minLevel: 13, zone: 'desert', description: 'Dorée et ancienne, elle irradie de puissance.' },
 
   // Potions — consommables
-  { name: 'Potion de soin',       type: 'consumable', rarity: 'common', attackBonus: 0, defenseBonus: 0, buyPrice: 15,  minLevel: 1, zone: null, description: 'Restaure 50% des PV.' },
+  // HP potions: forceBonus = 0 → heal 50% HP
-  { name: 'Grande potion de soin', type: 'consumable', rarity: 'rare',   attackBonus: 0, defenseBonus: 0, buyPrice: 40,  minLevel: 5, zone: null, description: 'Restaure 50% des PV. (même effet, plus cher — placeholder pour futur)' },
+  { name: 'Potion de soin',       type: 'consumable', rarity: 'common', attackBonus: 0, defenseBonus: 0, forceBonus: 0, buyPrice: 15, minLevel: 1, zone: null, description: 'Restaure 50% des PV.' },
+  // Endurance potions: forceBonus > 0 → restore N endurance
+  { name: 'Potion d\'énergie',          type: 'consumable', rarity: 'common', attackBonus: 0, defenseBonus: 0, forceBonus: 30, buyPrice: 20, minLevel: 1, zone: null, description: 'Restaure 30 points d\'endurance.' },
+  { name: 'Grande potion d\'énergie',   type: 'consumable', rarity: 'rare',   attackBonus: 0, defenseBonus: 0, forceBonus: 60, buyPrice: 45, minLevel: 3, zone: null, description: 'Restaure 60 points d\'endurance.' },
 ];
 
 export async function seedZones(dataSource: DataSource) {

src/forge/forge.service.ts

@@ -70,7 +70,7 @@ export class ForgeService {
 
       // Vérifier endurance
       const elapsedMinutes = (Date.now() - char.lastEnduranceTs.getTime()) / 60_000;
-      const recharge = Math.floor(elapsedMinutes / 6);
+      const recharge = Math.floor(elapsedMinutes / 3);
       const enduranceCurrent = Math.min(char.enduranceSaved + recharge, char.enduranceMax);
 
       if (enduranceCurrent < FORGE_ENDURANCE_COST) {

src/shop/shop.service.ts

@@ -62,12 +62,42 @@ export class ShopService {
 
       // Consumable = effet immédiat, pas d'inventaire
       if (item.type === 'consumable') {
-        char.gold -= item.buyPrice;
+        // Endurance potion: forceBonus > 0 = endurance restore amount
+        const isEndurancePotion = item.forceBonus > 0;
 
+        if (isEndurancePotion) {
+          // Calc current endurance (lazy)
+          const elapsed = (Date.now() - char.lastEnduranceTs.getTime()) / 60_000;
+          const recharge = Math.floor(elapsed / 3);
+          const currentEndurance = Math.min(char.enduranceSaved + recharge, char.enduranceMax);
+
+          if (currentEndurance >= char.enduranceMax) {
+            throw new BadRequestException('Endurance déjà au maximum');
+          }
+
+          char.gold -= item.buyPrice;
+          const endBefore = currentEndurance;
+          const restored = Math.min(item.forceBonus, char.enduranceMax - currentEndurance);
+          char.enduranceSaved = currentEndurance + restored;
+          char.lastEnduranceTs = new Date();
+          await manager.save(char);
+
+          return {
+            bought: true,
+            item: item.name,
+            type: 'consumable',
+            effectType: 'endurance',
+            goldSpent: item.buyPrice,
+            effect: { enduranceBefore: endBefore, enduranceAfter: char.enduranceSaved, restored },
+          };
+        }
+
+        // HP potion
         if (char.hpCurrent >= char.hpMax) {
           throw new BadRequestException('PV déjà au maximum');
         }
 
+        char.gold -= item.buyPrice;
         const hpBefore = char.hpCurrent;
         char.hpCurrent = Math.min(char.hpMax, char.hpCurrent + Math.floor(char.hpMax * POTION_HEAL_RATIO));
         await manager.save(char);
@@ -76,6 +106,7 @@ export class ShopService {
           bought: true,
           item: item.name,
           type: 'consumable',
+          effectType: 'hp',
           goldSpent: item.buyPrice,
           effect: { hpBefore, hpAfter: char.hpCurrent, healed: char.hpCurrent - hpBefore },
         };