feat(i18n, config): 增强多语言支持并新增系统配置项

更新英文、尼泊尔语与中文语言包，新增默认币种、开奖间隔、投注窗口及相关设置的翻译文案，提升界面清晰度与用户体验。
在系统设置中新增开奖相关配置字段，增强彩票系统参数管理的灵活性。
优化多语言国际化支持，确保后台管理界面在不同语言环境下的信息表达一致性。

src/i18n/locales/en/config.json

@@ -182,6 +182,14 @@
     "fields": {
       "manualReview": "Require manual review for draw results",
       "cooldownMinutes": "Cooldown duration (minutes)",
+      "defaultCurrency": "Default currency code",
+      "drawIntervalMinutes": "Draw interval (minutes)",
+      "drawBettingWindowSeconds": "Betting window (seconds)",
+      "drawCloseBeforeDrawSeconds": "Close before draw (seconds)",
+      "drawBufferDrawsAhead": "Pre-generated future draws",
+      "currencyDisplayDecimals": "Display decimals",
+      "currencyDecimalSeparator": "Decimal separator",
+      "currencyThousandsSeparator": "Thousands separator",
       "autoSettlement": "Run settlement automatically",
       "autoApprove": "Auto-approve settlement batches",
       "autoPayout": "Auto-credit winnings to wallets",

src/i18n/locales/ne/config.json

@@ -182,6 +182,14 @@
     "fields": {
       "manualReview": "ड्रअ परिणामका लागि म्यानुअल समीक्षा चाहिने",
       "cooldownMinutes": "कूलडाउन अवधि (मिनेट)",
+      "defaultCurrency": "पूर्वनिर्धारित मुद्रा कोड",
+      "drawIntervalMinutes": "ड्रअ अन्तराल (मिनेट)",
+      "drawBettingWindowSeconds": "बेटिङ विन्डो (सेकेन्ड)",
+      "drawCloseBeforeDrawSeconds": "ड्रअ अघि बन्द (सेकेन्ड)",
+      "drawBufferDrawsAhead": "अग्रिम सिर्जना गरिने ड्रअ संख्या",
+      "currencyDisplayDecimals": "प्रदर्शन दशमलव स्थान",
+      "currencyDecimalSeparator": "दशमलव विभाजक",
+      "currencyThousandsSeparator": "हजार विभाजक",
       "autoSettlement": "सेटलमेन्ट स्वतः चलाउने",
       "autoApprove": "सेटलमेन्ट ब्याच स्वतः स्वीकृत",
       "autoPayout": "जित रकम स्वतः वालेटमा जम्मा",

src/i18n/locales/zh/config.json

@@ -182,6 +182,14 @@
     "fields": {
       "manualReview": "开奖结果必须人工审核",
       "cooldownMinutes": "冷静期时长（分钟）",
+      "defaultCurrency": "默认币种代码",
+      "drawIntervalMinutes": "开奖间隔（分钟）",
+      "drawBettingWindowSeconds": "下注窗口（秒）",
+      "drawCloseBeforeDrawSeconds": "封盘提前（秒）",
+      "drawBufferDrawsAhead": "预生成未来期数",
+      "currencyDisplayDecimals": "金额显示小数位",
+      "currencyDecimalSeparator": "小数分隔符",
+      "currencyThousandsSeparator": "千位分隔符",
       "autoSettlement": "自动执行结算",
       "autoApprove": "自动审核结算批次",
       "autoPayout": "自动派彩入账",