Initial commit

**Motivations:**
- Initialisation du versionning git pour le projet

**Root causes:**
- N/A (Nouveau projet)

**Correctifs:**
- N/A

**Evolutions:**
- Structure initiale du projet
- Ajout du .gitignore

**Pages affectées:**
- Tous les fichiers

web/js/prestige.js

@@ -0,0 +1,56 @@
+import { GameConfig } from "./config.js";
+import { plotSizeFromLevel } from "./grid-utils.js";
+import { buildDefaultRow1Cells, addStarterAnimals } from "./default-grid-layout.js";
+
+/**
+ * @param {import("./types.js").GameState} state
+ * @returns {boolean}
+ */
+export function canPrestige(state) {
+  return (state.coins ?? 0) >= GameConfig.Prestige.MinCoinsToReset;
+}
+
+/**
+ * @param {import("./types.js").GameState} state
+ * @returns {import("./types.js").GameState} new state after reset
+ */
+export function doPrestige(state) {
+  if (!canPrestige(state)) return state;
+  const newLevel = (state.prestigeLevel ?? 0) + 1;
+  const [width, height] = plotSizeFromLevel(1);
+  state.coins = 0;
+  state.conveyorLevel = 1;
+  state.plotLevel = 1;
+  state.truckLevel = 1;
+  const cells = buildDefaultRow1Cells();
+  state.grid = { width, height, cells };
+  addStarterAnimals(state);
+  state.worldMapLevel = 1;
+  state.pendingEggTokens = [];
+  state.pendingBabies = [];
+  state.receptionAnimals = [];
+  state.nextTokenId = 1;
+  state.conveyorOffers = [];
+  state.lastOfferRefreshAt = 0;
+  state.worldTruckSales = [];
+  delete state.truckSale;
+  state.laboratoryOffer = null;
+  state.lastEvolutionAt = Math.floor(Date.now() / 1000);
+  state.prestigeLevel = newLevel;
+  state.timeOfDay = 6;
+  state.weather = "sun";
+  state.lastWeatherChangeAt = 0;
+  state.quests = [];
+  state.lastQuestDay = "";
+  state.stats = { eggsPlaced: 0, animalsSold: 0, conveyorUpgrades: 0, plotUpgrades: 0, truckUpgrades: 0, coinsEarned: 0 };
+  return state;
+}
+
+/**
+ * @param {number} prestigeLevel
+ * @returns {number}
+ */
+export function getPrestigeIncomeMultiplier(prestigeLevel) {
+  const level = prestigeLevel ?? 0;
+  return 1 + level * GameConfig.Prestige.IncomeBonusPerLevel;
+}