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/mutation-rules.js

@@ -0,0 +1,27 @@
+const Definitions = {
+  none: { incomeMultiplier: 1.0, weight: 0 },
+  golden: { incomeMultiplier: 1.5, weight: 50 },
+  crystal: { incomeMultiplier: 1.8, weight: 30 },
+  void: { incomeMultiplier: 2.2, weight: 20 },
+};
+
+/**
+ * @returns {Array<{ id: string, weight: number }>}
+ */
+export function getMutationEntries() {
+  const entries = [];
+  for (const [id, def] of Object.entries(Definitions)) {
+    if (id !== "none") entries.push({ id, weight: def.weight });
+  }
+  return entries;
+}
+
+/**
+ * @param {string} mutationId
+ * @returns {number}
+ */
+export function getIncomeMultiplier(mutationId) {
+  const def = Definitions[mutationId];
+  if (def === null || def === undefined) return 1.0;
+  return def.incomeMultiplier;
+}