添加书架刷新按钮 + 后端服务保活方案

前端:
- 书架筛选栏新增「↻ 刷新」按钮，点击重新加载分类和书架数据
- 新增 refreshShelf() 函数，带 loading 状态反馈
- 新增 .shelf-refresh-btn CSS 样式

后端保活:
- 新增 start_server.sh 启动脚本 (start/daemon/stop/restart/status)
- 新增 com.weread-dashboard.plist launchd 服务配置
  - KeepAlive=true: 崩溃自动重启
  - RunAtLoad=true: 开机自动启动
  - 日志输出到 /tmp/weread_server.log

start_server.sh

@@ -0,0 +1,108 @@
+#!/bin/bash
+# 微信读书数据看板 - 服务启动脚本
+# 用法:
+#   ./start_server.sh          启动服务（前台运行）
+#   ./start_server.sh daemon   后台守护进程方式启动
+#   ./start_server.sh stop     停止服务
+#   ./start_server.sh restart  重启服务
+#   ./start_server.sh status   查看状态
+
+PROJECT_DIR="/Users/hwj/WorkBuddy/2026-07-17-09-48-20"
+PYTHON="/Users/hwj/.workbuddy/binaries/python/envs/default/bin/python"
+PID_FILE="$PROJECT_DIR/.server.pid"
+LOG_FILE="/tmp/weread_server.log"
+PORT=8080
+
+cd "$PROJECT_DIR" || exit 1
+
+is_running() {
+    if [ -f "$PID_FILE" ]; then
+        local pid=$(cat "$PID_FILE")
+        if kill -0 "$pid" 2>/dev/null; then
+            return 0
+        fi
+    fi
+    # 也检查端口是否被占用
+    if lsof -i :$PORT -t >/dev/null 2>&1; then
+        return 0
+    fi
+    return 1
+}
+
+get_pid() {
+    if [ -f "$PID_FILE" ]; then
+        local pid=$(cat "$PID_FILE")
+        if kill -0 "$pid" 2>/dev/null; then
+            echo "$pid"
+            return
+        fi
+    fi
+    lsof -i :$PORT -t 2>/dev/null | head -1
+}
+
+stop_server() {
+    if is_running; then
+        local pid=$(get_pid)
+        echo "停止服务 (PID: $pid)..."
+        kill "$pid" 2>/dev/null
+        sleep 1
+        if kill -0 "$pid" 2>/dev/null; then
+            kill -9 "$pid" 2>/dev/null
+        fi
+        rm -f "$PID_FILE"
+        echo "已停止"
+    else
+        echo "服务未运行"
+    fi
+}
+
+start_foreground() {
+    if is_running; then
+        echo "服务已在运行 (PID: $(get_pid))"
+        exit 1
+    fi
+    echo "启动服务（前台模式）..."
+    exec "$PYTHON" app.py
+}
+
+start_daemon() {
+    if is_running; then
+        echo "服务已在运行 (PID: $(get_pid))"
+        exit 1
+    fi
+    echo "启动服务（后台守护模式）..."
+    nohup "$PYTHON" app.py > "$LOG_FILE" 2>&1 &
+    local pid=$!
+    echo "$pid" > "$PID_FILE"
+    sleep 2
+    if kill -0 "$pid" 2>/dev/null; then
+        echo "服务已启动 (PID: $pid)"
+        echo "访问: http://127.0.0.1:$PORT"
+        echo "日志: $LOG_FILE"
+    else
+        echo "启动失败，请查看日志: $LOG_FILE"
+        cat "$LOG_FILE"
+        rm -f "$PID_FILE"
+        exit 1
+    fi
+}
+
+show_status() {
+    if is_running; then
+        local pid=$(get_pid)
+        echo "✅ 服务运行中 (PID: $pid)"
+        echo "   端口: $PORT"
+        echo "   日志: $LOG_FILE"
+    else
+        echo "❌ 服务未运行"
+    fi
+}
+
+case "${1:-start}" in
+    start)       start_foreground ;;
+    daemon)      start_daemon ;;
+    stop)        stop_server ;;
+    restart)     stop_server; sleep 1; start_daemon ;;
+    status)      show_status ;;
+    *)           echo "用法: $0 {start|daemon|stop|restart|status}"; exit 1 ;;
+esac