feat: simulate a month

src/AppHeijunka.vue

@@ -85,7 +85,21 @@ const createdAt = new Date('2026-01-01').toLocaleDateString(undefined, {
       </p>
       <p>
         You know, from your years of experience, that in 3 days, you sell
-        approximately 5 shirts, 3 jeans, 2 pairs of shoes and 2 hats.
+        approximately
+        <ul>
+          <li>
+            5 shirts <ShirtItem v-for="_ in Array(5)" />
+          </li>
+          <li>
+            3 jeans <JeanItem v-for="_ in Array(3)" />
+          </li>
+          <li>
+            2 pairs of shoes <ShoeItem v-for="_ in Array(2)" />
+          </li>
+          <li>
+            2 hats <HatItem v-for="_ in Array(2)" />
+          </li>
+        </ul>
       </p>
       <section class="commands">
         <button
@@ -132,6 +146,9 @@ const createdAt = new Date('2026-01-01').toLocaleDateString(undefined, {
         <button class="button-outline" @click="orders = [...batchPlanning]">
           batch
         </button>
+        <div>
+          <button class="button-outline" @click="heijunkaStore.simulateMonth()">Simulate a month</button>
+        </div>
       </section>
       <section class="factory">
         <h2>Factory</h2>

src/modules/heijkunka/heijunka-store.ts

@@ -37,8 +37,8 @@ const getInventoryByProduct = (
 ): number => {
   const inventory = planning.filter(
     (p, index) =>
-      index >= (currentDay - 1) * NUMBER_OF_HOURS_PER_DAY &&
-      index < currentDay * NUMBER_OF_HOURS_PER_DAY &&
+      index >= ((currentDay % NUMBER_OF_DAYS) - 1) * NUMBER_OF_HOURS_PER_DAY &&
+      index < (currentDay % NUMBER_OF_DAYS) * NUMBER_OF_HOURS_PER_DAY &&
       p === product
   ).length
 
@@ -146,13 +146,18 @@ export const useHeijunkaStore = defineStore('heijunka', {
       this.planning = []
       this.orders = []
       this.inventory = { ...initialInventory }
+    },
+    simulateMonth() {
+      for (let index = 0; index < 30; index++) {
+        this.newHour()
+      }
     }
   },
   getters: {
     currentDay: (state) =>
       Math.ceil(state.meta.currentHour / NUMBER_OF_HOURS_PER_DAY),
-    gameEnded: (state) =>
-      state.meta.currentHour >= NUMBER_OF_DAYS * NUMBER_OF_HOURS_PER_DAY,
+    gameEnded: () => false,
+    // state.meta.currentHour >= NUMBER_OF_DAYS * NUMBER_OF_HOURS_PER_DAY,
     meanLeadTime: (state) => getMean(state.orders.map((o) => o.leadTime))
   }
 })