[FEAT] 實作機台廣告管理模組與多語系支援

1. 新增廣告管理列表與機台配置介面，包含多語系 (zh_TW, en, ja) 與完整 CRUD
2. 實作基於 Alpine 的廣告素材預覽輪播功能
3. 優化廣告素材下拉選單，強制綁定所屬公司以達成多租戶資料隔離
4. 重構廣告配置中廣告影片的縮圖渲染邏輯，移除 <video> 標籤以大幅提升頁面載入速度與節省頻寬
5. 放寬個人檔案頭像上傳限制，支援 WebP 格式

lang/zh_TW.json

@@ -828,5 +828,71 @@
     "user": "一般用戶",
     "vs Yesterday": "較昨日",
     "warehouses": "倉庫管理",
-    "待填寫": "待填寫"
+    "待填寫": "待填寫",
+    "Advertisement List": "廣告列表",
+    "Machine Advertisement Settings": "機台廣告設置",
+    "Add Advertisement": "新增廣告",
+    "Edit Advertisement": "編輯廣告",
+    "Delete Advertisement": "刪除廣告",
+    "Duration": "時長",
+    "15 Seconds": "15 秒",
+    "30 Seconds": "30 秒",
+    "60 Seconds": "60 秒",
+    "Position": "投放位置",
+    "Standby Ad": "待機廣告",
+    "Assign Advertisement": "投放廣告",
+    "Please select a machine first": "請先選擇機台",
+    "Advertisement created successfully": "廣告建立成功",
+    "Advertisement updated successfully": "廣告更新成功",
+    "Advertisement deleted successfully": "廣告刪除成功",
+    "Advertisement assigned successfully": "廣告投放完成",
+    "Vending": "販賣頁",
+    "Visit Gift": "來店禮",
+    "Standby": "待機廣告",
+    "Advertisement Video/Image": "廣告影片/圖片",
+    "Sort Order": "排序",
+    "Date Range": "日期區間",
+    "Manage ad materials and machine playback settings": "管理廣告素材與機台播放設定",
+    "Preview": "預覽",
+    "No advertisements found.": "未找到廣告素材。",
+    "vending": "販賣頁",
+    "visit_gift": "來店禮",
+    "standby": "待機廣告",
+    "No assignments": "尚未投放",
+    "Please select a machine to view and manage its advertisements.": "請選擇一個機台以查看並管理其廣告。",
+    "Delete Advertisement Confirmation": "刪除廣告確認",
+    "Are you sure you want to delete this advertisement? This will also remove all assignments to machines.": "您確定要刪除此廣告嗎？這也將移除所有對機台的投放。",
+    "Manage your ad material details": "管理您的廣告素材詳情",
+    "Material Name": "素材名稱",
+    "Enter ad material name": "輸入廣告素材名稱",
+    "Material Type": "素材類型",
+    "Duration (Seconds)": "播放秒數",
+    "Seconds": "秒",
+    "Upload Image": "上傳圖片",
+    "Upload Video": "上傳影片",
+    "Save Material": "儲存素材",
+    "Select a material to play on this machine": "選擇要在此機台播放的素材",
+    "Target Position": "投放位置",
+    "Select Material": "選擇素材",
+    "Please select a material": "請選擇素材",
+    "Playback Order": "播放順序",
+    "Smallest number plays first.": "數字愈小愈先播放。",
+    "Confirm Assignment": "確認投放",
+    "Are you sure you want to remove this assignment?": "您確定要移除此投放嗎？",
+    "image": "圖片",
+    "video": "影片",
+    "Search Machine...": "搜尋機台...",
+    "Advertisement created successfully.": "廣告建立成功。",
+    "Advertisement updated successfully.": "廣告更新成功。",
+    "Advertisement deleted successfully.": "廣告刪除成功。",
+    "Cannot delete advertisement being used by machines.": "無法刪除正在使用的廣告素材。",
+    "Advertisement assigned successfully.": "廣告投放完成。",
+    "Assignment removed successfully.": "廣告投放已移除。",
+    "Max 5MB": "最大 5MB",
+    "Max 50MB": "最大 50MB",
+    "Select...": "請選擇...",
+    "Ad Settings": "廣告設置",
+    "System Default (All Companies)": "系統預設 (所有公司)",
+    "No materials available": "沒有可用的素材",
+    "Search...": "搜尋..."
 }