[FEAT] 廣告排程功能與 UI 優化

1. 新增廣告排程功能，支援設定發布時間與下架時間。
2. 整合 Flatpickr 時間選擇器，提供與機台日誌一致的極簡奢華風 UI。
3. 優化廣告列表中的數字字體，套用 font-mono 與 tabular-nums，與客戶管理模組風格同步。
4. 修正 Alpine.js 資料同步邏輯，確保編輯模式下排程時間能正確回填。

lang/en.json

@@ -1145,5 +1145,12 @@
     "Service Terms": "Service Periods",
     "Contract": "Contract",
     "Warranty": "Warranty",
-    "Software": "Software"
+    "Software": "Software",
+    "Schedule": "Schedule",
+    "Immediate": "Immediate",
+    "Indefinite": "Indefinite",
+    "Ongoing": "Ongoing",
+    "Waiting": "Waiting",
+    "Publish Time": "Publish Time",
+    "Expired Time": "Expired Time"
 }

lang/ja.json

@@ -1144,5 +1144,12 @@
     "Service Terms": "サービス期間",
     "Contract": "契約",
     "Warranty": "保証",
-    "Software": "ソフトウェア"
+    "Software": "ソフトウェア",
+    "Schedule": "スケジュール設定",
+    "Immediate": "即時",
+    "Indefinite": "無期限",
+    "Ongoing": "進行中",
+    "Waiting": "待機中",
+    "Publish Time": "公開時間",
+    "Expired Time": "終了時間"
 }

lang/zh_TW.json

@@ -1145,5 +1145,12 @@
     "Service Terms": "服務期程",
     "Contract": "合約",
     "Warranty": "保固",
-    "Software": "軟體"
+    "Software": "軟體",
+    "Schedule": "排程區間",
+    "Immediate": "立即",
+    "Indefinite": "無限期",
+    "Ongoing": "進行中",
+    "Waiting": "等待中",
+    "Publish Time": "發布時間",
+    "Expired Time": "下架時間"
 }