feat: configurable locales path per story, dynamic language switching from story data

public/demo/locales/ja.json

@@ -0,0 +1,56 @@
+{
+  "intro": {
+    "choice": {
+      "left_door": "左にある光るドアへ向かう",
+      "right_door": "右にある普通のドアへ向かう",
+      "search": "部屋を念入りに調べる",
+      "stay": "その場に留まる"
+    }
+  },
+  "left_door": {
+    "choice": {
+      "handshake": "見知らぬ人と握手する",
+      "reject": "握手を断り、警戒を続ける"
+    }
+  },
+  "right_door": {
+    "choice": {
+      "continue": "先へ進む",
+      "back": "引き返す"
+    }
+  },
+  "trust_ending": {
+    "choice": {
+      "journey": "信頼の旅に出る（trust >= 80 が必要）",
+      "leave": "ここを去る"
+    }
+  },
+  "investigation_site": {
+    "choice": {
+      "leave": "部屋を出る"
+    }
+  },
+  "desk_detail": {
+    "choice": {
+      "return": "調査現場に戻る",
+      "leave": "立ち去る"
+    }
+  },
+  "stay": {
+    "choice": {
+      "stand": "立ち上がって去る"
+    }
+  },
+  "qte_success": {
+    "choice": {
+      "continue": "先へ進む",
+      "back": "引き返す"
+    }
+  },
+  "qte_fail": {
+    "choice": {
+      "continue": "先へ進む",
+      "back": "引き返す"
+    }
+  }
+}