feat: Modal 小屏滚动 + 数据看板视频播放 + Docker Alpine 化

- 数据看板作者视频播放接口从 /api/video/stream 改为 /api/Video/play（后端只有 Play action，之前笔误导致 404）
- 全局 Modal 小屏适配：body max-height + 自定义 10px 深色滚动条，兼容 full-modal 和登录页 login-modal
- Docker 镜像换 Alpine + 内置 ffmpeg，避开 Ubuntu apt 网络问题
- 新增 .dockerignore 排除 node_modules / logs / videos / db 等构建噪音
- 移除已废弃的 DyQrCodeService（旧扫码登录）

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Dockerfile.prod

@@ -10,7 +10,7 @@ RUN npm config set registry https://registry.npmmirror.com && \
     npm install -g pnpm && \
     pnpm config set registry https://registry.npmmirror.com && \
     if [ -f pnpm-lock.yaml ]; then \
-      pnpm install --frozen-lockfile; \
+      pnpm install --no-frozen-lockfile; \
     else \
       npm install; \
     fi
@@ -18,17 +18,11 @@ RUN npm config set registry https://registry.npmmirror.com && \
 COPY app/ ./
 RUN pnpm build || npm run build
 
-# 第二阶段：构建后端 + 下载 Playwright Chromium
-FROM mcr.azurecr.cn/dotnet/sdk:6.0 AS backend-builder
+# 第二阶段：构建后端
+FROM mcr.microsoft.com/dotnet/sdk:6.0 AS backend-builder
 
 WORKDIR /src
 
-# 安装 Node.js 18（用于 npx playwright install，最可靠的方式）
-RUN apt-get update && apt-get install -y curl && \
-    curl -fsSL https://deb.nodesource.com/setup_18.x | bash - && \
-    apt-get install -y nodejs && \
-    rm -rf /var/lib/apt/lists/*
-
 COPY *.csproj ./
 RUN dotnet restore dy.net.csproj
 
@@ -39,46 +33,18 @@ COPY --from=frontend-builder /app/frontend/dist ./app/dist
 
 RUN dotnet publish dy.net.csproj -c Release -o /app/publish
 
-# 用 npx 下载 Playwright Chromium 到固定路径
-ENV PLAYWRIGHT_BROWSERS_PATH=/ms-playwright
-RUN npx -y playwright@1.44.0 install chromium
-
-# 第三阶段：运行镜像
-FROM mcr.azurecr.cn/dotnet/aspnet:6.0 AS final
+# 第三阶段：运行镜像（Alpine 版：apk 包更小、代理下更易通过）
+FROM mcr.microsoft.com/dotnet/aspnet:6.0-alpine AS final
 
 WORKDIR /app
 
 ENV TZ=Asia/Shanghai
-RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
-
-# 切换阿里云镜像源，解决国内网络无法访问 deb.debian.org 的问题
-RUN sed -i 's/deb.debian.org/mirrors.aliyun.com/g' /etc/apt/sources.list && \
-    sed -i 's/security.debian.org/mirrors.aliyun.com/g' /etc/apt/sources.list
-
-# 安装 Chromium 运行时依赖（Debian Bullseye）
-RUN apt-get update && apt-get install -y --no-install-recommends \
-    libnss3 \
-    libatk1.0-0 \
-    libatk-bridge2.0-0 \
-    libcups2 \
-    libdrm2 \
-    libxkbcommon0 \
-    libxcomposite1 \
-    libxdamage1 \
-    libxfixes3 \
-    libxrandr2 \
-    libgbm1 \
-    libasound2 \
-    libpango-1.0-0 \
-    libpangocairo-1.0-0 \
-    libgtk-3-0 \
-    fonts-liberation \
-    && rm -rf /var/lib/apt/lists/*
+RUN apk add --no-cache tzdata ffmpeg && \
+    cp /usr/share/zoneinfo/$TZ /etc/localtime && \
+    echo $TZ > /etc/timezone
 
 COPY --from=backend-builder /app/publish .
-COPY --from=backend-builder /ms-playwright /ms-playwright
 
-ENV PLAYWRIGHT_BROWSERS_PATH=/ms-playwright
 EXPOSE 10101
 ENV ASPNETCORE_URLS=http://*:10101
 ENV ASPNETCORE_ENVIRONMENT=Production