feat: 视频预览/数据看板/下载配置 三项业务功能

- 新增视频预览：VideoPlayer 组件、VideoController/DyCollectVideoService/Repository、VideoPageRequestDTO 对应后端改动
- 新增数据看板：workplace/statics.vue、RecordTable、相关 store/http/axios 改动
- 新增下载配置：DownloadConfigService、ConfigController、AppSet.vue、AppConfig
- 其他：DyHttpClientService / 同步 Job(Collect, Favorit) / Cookie 表 / CommonService / ServiceExtension 的配套调整
- 仓库卫生：.gitignore 追加 feiniu 过滤；运维脚本归档到 docs/scripts/

docs/scripts/check_database.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+DB_PATH="/Users/gaotu/WebstormProjects/dysync.net/db/dy.sqlite"
+
+echo "=== 数据库检查 ==="
+echo ""
+
+echo "1. 视频记录总数:"
+sqlite3 "$DB_PATH" "SELECT COUNT(*) FROM dy_collect_video;"
+
+echo ""
+echo "2. 有保存路径的视频数量:"
+sqlite3 "$DB_PATH" "SELECT COUNT(*) FROM dy_collect_video WHERE videoSavePath IS NOT NULL AND videoSavePath != '';"
+
+echo ""
+echo "3. Cookie配置数量:"
+sqlite3 "$DB_PATH" "SELECT COUNT(*) FROM dy_user_cookies;"
+
+echo ""
+echo "4. Cookie配置详情:"
+sqlite3 -header -column "$DB_PATH" "SELECT id, userName, savePath, favSavePath, uperSavePath, collHasSyncd FROM dy_user_cookies LIMIT 5;"
+
+echo ""
+echo "5. 视频记录示例（前3条）:"
+sqlite3 -header -column "$DB_PATH" "SELECT id, videoTitle, author, videoSavePath, fileSize FROM dy_collect_video LIMIT 3;"
+
+echo ""
+echo "6. 检查视频文件是否存在:"
+sqlite3 "$DB_PATH" "SELECT videoSavePath FROM dy_collect_video WHERE videoSavePath IS NOT NULL AND videoSavePath != '' LIMIT 1;" | while read path; do
+  if [ -n "$path" ]; then
+    echo "检查: $path"
+    if [ -f "$path" ]; then
+      echo "✅ 文件存在"
+      ls -lh "$path" | awk '{print "   大小: " $5}'
+    else
+      echo "❌ 文件不存在"
+    fi
+  fi
+done
+