Checkpoint: v3.0 - 新增训练视频教程库（分类浏览、自评系统）、训练提醒通知（多类型提醒、浏览器推送）、通知记录管理、去除冗余文字。65个测试全部通过。

client/src/components/DashboardLayout.tsx

@@ -22,7 +22,8 @@ import {
 import { useIsMobile } from "@/hooks/useMobile";
 import {
   LayoutDashboard, LogOut, PanelLeft, Target, Video,
-  Award, Activity, FileVideo, Trophy, Flame, Camera, CircleDot
+  Award, Activity, FileVideo, Trophy, Flame, Camera, CircleDot,
+  BookOpen, Bell
 } from "lucide-react";
 import { CSSProperties, useEffect, useRef, useState } from "react";
 import { useLocation, Redirect } from "wouter";
@@ -39,6 +40,8 @@ const menuItems = [
   { icon: Activity, label: "训练进度", path: "/progress", group: "stats" },
   { icon: Award, label: "NTRP评分", path: "/rating", group: "stats" },
   { icon: Trophy, label: "排行榜", path: "/leaderboard", group: "stats" },
+  { icon: BookOpen, label: "教程库", path: "/tutorials", group: "learn" },
+  { icon: Bell, label: "训练提醒", path: "/reminders", group: "learn" },
 ];
 
 const SIDEBAR_WIDTH_KEY = "sidebar-width";
@@ -226,6 +229,27 @@ function DashboardLayoutContent({
                   </SidebarMenuItem>
                 );
               })}
+
+              {/* Divider */}
+              {!isCollapsed && <div className="my-2 mx-2 border-t border-border/50" />}
+              {!isCollapsed && <p className="px-3 text-[10px] font-medium text-muted-foreground uppercase tracking-wider mb-1">学习与提醒</p>}
+
+              {menuItems.filter(i => i.group === "learn").map(item => {
+                const isActive = location === item.path;
+                return (
+                  <SidebarMenuItem key={item.path}>
+                    <SidebarMenuButton
+                      isActive={isActive}
+                      onClick={() => setLocation(item.path)}
+                      tooltip={item.label}
+                      className={`h-10 transition-all font-normal`}
+                    >
+                      <item.icon className={`h-4 w-4 ${isActive ? "text-primary" : ""}`} />
+                      <span>{item.label}</span>
+                    </SidebarMenuButton>
+                  </SidebarMenuItem>
+                );
+              })}
             </SidebarMenu>
           </SidebarContent>