chore：完善项目目录结构和基础框架

- 添加核心系统框架目录结构
- 创建游戏模块化组织架构
- 添加数据配置和本地化支持
- 建立脚本分类管理体系
- 创建场景预制件管理目录

data/characters/.gitkeep

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+# 保持目录结构 - 角色数据目录

data/configs/game_config.json

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+{
+  "game": {
+	"name": "whaleTown",
+	"version": "1.0.0",
+	"debug_mode": true
+  },
+  "network": {
+	"api_base_url": "https://whaletownend.xinghangee.icu",
+	"timeout": 30,
+	"retry_count": 3
+  },
+  "ui": {
+	"default_font_size": 14,
+	"toast_duration": 2.0,
+	"transition_duration": 0.3
+  },
+  "gameplay": {
+	"auto_save_interval": 300,
+	"max_inventory_slots": 50,
+	"default_player_stats": {
+	  "level": 1,
+	  "coins": 100,
+	  "exp": 0,
+	  "max_exp": 100,
+	  "energy": 100,
+	  "max_energy": 100
+	}
+  }
+}

data/dialogues/.gitkeep

@@ -0,0 +1 @@
+# 保持目录结构 - 对话数据目录

data/items/.gitkeep

@@ -0,0 +1 @@
+# 保持目录结构 - 物品数据目录

data/levels/.gitkeep

@@ -0,0 +1 @@
+# 保持目录结构 - 关卡数据目录

data/localization/zh_CN.json

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+{
+  "ui": {
+    "login": "登录",
+    "register": "注册",
+    "username": "用户名",
+    "password": "密码",
+    "email": "邮箱",
+    "confirm_password": "确认密码",
+    "verification_code": "验证码",
+    "send_code": "发送验证码",
+    "forgot_password": "忘记密码",
+    "enter_town": "进入小镇",
+    "logout": "退出登录"
+  },
+  "messages": {
+    "login_success": "登录成功！正在进入鲸鱼镇...",
+    "register_success": "注册成功！欢迎加入鲸鱼镇",
+    "network_error": "网络连接失败，请检查网络连接",
+    "invalid_username": "用户名只能包含字母、数字和下划线",
+    "invalid_email": "请输入有效的邮箱地址",
+    "password_too_short": "密码长度至少8位",
+    "password_mismatch": "两次输入的密码不一致",
+    "verification_code_sent": "验证码已发送到您的邮箱，请查收"
+  },
+  "game": {
+    "level": "等级",
+    "coins": "金币",
+    "experience": "经验",
+    "energy": "体力",
+    "explore": "探索小镇",
+    "inventory": "背包",
+    "shop": "商店",
+    "friends": "好友",
+    "settings": "设置"
+  }
+}