feat: 完整版 uni-app 前端 + 后端 API 改造

后端:
- 新增知识搜索 API GET /api/knowledge/search
- 成就 API 改造为 AI 主题（知识探索/收藏/AI问答/社交）

前端新增 7 个页面:
- favorites (我的收藏)
- achievements (成就)
- leaderboard (排行榜)
- search (搜索)
- progress (学习进度)
- feedback (意见反馈)
- settings (设置)
- news (AI资讯详情)

完善:
- 个人中心导航全部接真实页面，清除所有'开发中'stub
- index 搜索按钮 → search 页
- trend 卡片点击 → news 详情页
- api.js 新增 feedbackApi + knowledgeApi.search
- userApi.achievements 端点

构建验证: ✅ DONE Build complete (16 pages, 16 bundles)

backend/wdkj-server/src/routes/knowledge.js

@@ -5,6 +5,45 @@ const ApiResponse = require('../utils/response')
 const { userAuthMiddleware } = require('../middleware/auth')
 const logger = require('../utils/logger')
 
+/**
+ * 搜索知识
+ * GET /api/knowledge/search?q=xxx&page=1&limit=20
+ */
+router.get('/search', async (req, res) => {
+  try {
+    const { q, page = 1, limit = 20 } = req.query
+    if (!q || q.trim().length === 0) {
+      return ApiResponse.error(res, '请输入搜索关键词', 400)
+    }
+
+    const query = {
+      status: 'approved',
+      $or: [
+        { title: { $regex: q, $options: 'i' } },
+        { content: { $regex: q, $options: 'i' } },
+        { tags: { $regex: q, $options: 'i' } }
+      ]
+    }
+
+    const total = await Knowledge.countDocuments(query)
+    const result = await Knowledge.find(query)
+      .sort({ viewCount: -1, createdAt: -1 })
+      .skip((parseInt(page) - 1) * parseInt(limit))
+      .limit(parseInt(limit))
+      .lean()
+
+    return ApiResponse.paginated(res, result, {
+      page: parseInt(page),
+      limit: parseInt(limit),
+      total
+    })
+
+  } catch (error) {
+    logger.error('搜索知识失败:', error)
+    return ApiResponse.serverError(res, error.message)
+  }
+})
+
 /**
  * 获取知识列表
  * GET /api/knowledge

backend/wdkj-server/src/routes/user.js

@@ -202,133 +202,133 @@ router.get('/achievements', async (req, res) => {
   try {
     const user = req.user
     
-    // 生成成就数据
-    const achievements = [
-      {
-        name: '探索成就',
-        achievements: [
+    // 生成成就数据（AI 维度主题）
+        const achievements = [
           {
-            id: 'dim1_complete',
-            name: '一维探索者',
-            description: '完成一维空间的探索',
-            icon: '⭐',
-            unlocked: user.exploreData.dim1?.completed || false,
-            date: user.exploreData.dim1?.completed ? user.updatedAt.toISOString().split('T')[0] : null
+            name: '知识探索',
+            achievements: [
+              {
+                id: 'dim1_read',
+                name: 'AI起源探索者',
+                description: '完成 AI 起源维度的知识阅读',
+                icon: '📜',
+                unlocked: user.exploreData.dim1?.completed || false,
+                date: user.exploreData.dim1?.completed ? user.updatedAt.toISOString().split('T')[0] : null
+              },
+              {
+                id: 'dim2_read',
+                name: 'AI发展探索者',
+                description: '完成 AI 发展维度的知识阅读',
+                icon: '🏛',
+                unlocked: user.exploreData.dim2?.completed || false,
+                date: user.exploreData.dim2?.completed ? user.updatedAt.toISOString().split('T')[0] : null
+              },
+              {
+                id: 'dim3_read',
+                name: 'AI当前探索者',
+                description: '完成 AI 当前格局维度的知识阅读',
+                icon: '♟',
+                unlocked: user.exploreData.dim3?.completed || false,
+                date: user.exploreData.dim3?.completed ? user.updatedAt.toISOString().split('T')[0] : null
+              },
+              {
+                id: 'dim4_read',
+                name: 'AI学习探索者',
+                description: '完成 AI 学习与工具维度的知识阅读',
+                icon: '🧠',
+                unlocked: user.exploreData.dim4?.completed || false,
+                date: user.exploreData.dim4?.completed ? user.updatedAt.toISOString().split('T')[0] : null
+              },
+              {
+                id: 'dim5_read',
+                name: 'AI趋势探索者',
+                description: '完成 AI 趋势追踪维度的知识阅读',
+                icon: '⚡',
+                unlocked: user.exploreData.dim5?.completed || false,
+                date: user.exploreData.dim5?.completed ? user.updatedAt.toISOString().split('T')[0] : null
+              }
+            ]
           },
           {
-            id: 'dim2_complete',
-            name: '二维探索者',
-            description: '完成二维空间的探索',
-            icon: '✨',
-            unlocked: user.exploreData.dim2?.completed || false,
-            date: user.exploreData.dim2?.completed ? user.updatedAt.toISOString().split('T')[0] : null
+            name: '收藏成就',
+            achievements: [
+              {
+                id: 'first_collection',
+                name: '初次收藏',
+                description: '收藏你的第一个 AI 知识',
+                icon: '❤️',
+                unlocked: user.collectedKnowledge?.length > 0,
+                date: user.collectedKnowledge?.length > 0 ? user.updatedAt.toISOString().split('T')[0] : null
+              },
+              {
+                id: 'five_collections',
+                name: '收藏爱好者',
+                description: '收藏5个 AI 知识',
+                icon: '🧡',
+                unlocked: user.collectedKnowledge?.length >= 5,
+                date: user.collectedKnowledge?.length >= 5 ? user.updatedAt.toISOString().split('T')[0] : null
+              },
+              {
+                id: 'ten_collections',
+                name: '收藏大师',
+                description: '收藏10个 AI 知识',
+                icon: '💛',
+                unlocked: user.collectedKnowledge?.length >= 10,
+                date: user.collectedKnowledge?.length >= 10 ? user.updatedAt.toISOString().split('T')[0] : null
+              }
+            ]
           },
           {
-            id: 'dim3_complete',
-            name: '三维探索者',
-            description: '完成三维空间的探索',
-            icon: '🌟',
-            unlocked: user.exploreData.dim3?.completed || false,
-            date: user.exploreData.dim3?.completed ? user.updatedAt.toISOString().split('T')[0] : null
+            name: 'AI 问答',
+            achievements: [
+              {
+                id: 'first_ask',
+                name: '初次提问',
+                description: '向 AI 助手提出第一个问题',
+                icon: '🤖',
+                unlocked: user.achievements?.includes('first_ask') || false,
+                date: user.achievements?.includes('first_ask') ? user.updatedAt.toISOString().split('T')[0] : null
+              },
+              {
+                id: 'ten_asks',
+                name: '勤学好问',
+                description: '向 AI 助手提出 10 个问题',
+                icon: '💡',
+                unlocked: user.achievements?.includes('ten_asks') || false,
+                date: user.achievements?.includes('ten_asks') ? user.updatedAt.toISOString().split('T')[0] : null
+              },
+              {
+                id: 'fifty_asks',
+                name: 'AI 达人',
+                description: '向 AI 助手提出 50 个问题',
+                icon: '🧠',
+                unlocked: user.achievements?.includes('fifty_asks') || false,
+                date: user.achievements?.includes('fifty_asks') ? user.updatedAt.toISOString().split('T')[0] : null
+              }
+            ]
           },
           {
-            id: 'dim4_complete',
-            name: '四维探索者',
-            description: '完成四维空间的探索',
-            icon: '💫',
-            unlocked: user.exploreData.dim4?.completed || false,
-            date: user.exploreData.dim4?.completed ? user.updatedAt.toISOString().split('T')[0] : null
-          },
-          {
-            id: 'dim5_complete',
-            name: '五维探索者',
-            description: '完成五维空间的探索',
-            icon: '🌌',
-            unlocked: user.exploreData.dim5?.completed || false,
-            date: user.exploreData.dim5?.completed ? user.updatedAt.toISOString().split('T')[0] : null
+            name: '社交成就',
+            achievements: [
+              {
+                id: 'first_share',
+                name: '初次分享',
+                description: '分享你的第一个知识给朋友',
+                icon: '📤',
+                unlocked: user.achievements?.includes('first_share') || false,
+                date: user.achievements?.includes('first_share') ? user.updatedAt.toISOString().split('T')[0] : null
+              },
+              {
+                id: 'five_shares',
+                name: '分享达人',
+                description: '分享 5 次知识给朋友',
+                icon: '📣',
+                unlocked: user.achievements?.includes('five_shares') || false,
+                date: user.achievements?.includes('five_shares') ? user.updatedAt.toISOString().split('T')[0] : null
+              }
+            ]
           }
         ]
-      },
-      {
-        name: '创作成就',
-        achievements: [
-          {
-            id: 'first_work',
-            name: '初次创作',
-            description: '创作你的第一个作品',
-            icon: '🎨',
-            unlocked: user.achievements?.includes('first_work') || false,
-            date: user.achievements?.includes('first_work') ? user.updatedAt.toISOString().split('T')[0] : null
-          },
-          {
-            id: 'five_works',
-            name: '创作达人',
-            description: '创作5个作品',
-            icon: '🏆',
-            unlocked: user.achievements?.includes('five_works') || false,
-            date: user.achievements?.includes('five_works') ? user.updatedAt.toISOString().split('T')[0] : null
-          },
-          {
-            id: 'ten_works',
-            name: '创作大师',
-            description: '创作10个作品',
-            icon: '👑',
-            unlocked: user.achievements?.includes('ten_works') || false,
-            date: user.achievements?.includes('ten_works') ? user.updatedAt.toISOString().split('T')[0] : null
-          }
-        ]
-      },
-      {
-        name: '收藏成就',
-        achievements: [
-          {
-            id: 'first_collection',
-            name: '初次收藏',
-            description: '收藏你的第一个知识',
-            icon: '❤️',
-            unlocked: user.collectedKnowledge?.length > 0,
-            date: user.collectedKnowledge?.length > 0 ? user.updatedAt.toISOString().split('T')[0] : null
-          },
-          {
-            id: 'five_collections',
-            name: '收藏爱好者',
-            description: '收藏5个知识',
-            icon: '🧡',
-            unlocked: user.collectedKnowledge?.length >= 5,
-            date: user.collectedKnowledge?.length >= 5 ? user.updatedAt.toISOString().split('T')[0] : null
-          },
-          {
-            id: 'ten_collections',
-            name: '收藏大师',
-            description: '收藏10个知识',
-            icon: '💛',
-            unlocked: user.collectedKnowledge?.length >= 10,
-            date: user.collectedKnowledge?.length >= 10 ? user.updatedAt.toISOString().split('T')[0] : null
-          }
-        ]
-      },
-      {
-        name: '社交成就',
-        achievements: [
-          {
-            id: 'first_share',
-            name: '初次分享',
-            description: '分享你的第一个作品',
-            icon: '📤',
-            unlocked: user.achievements?.includes('first_share') || false,
-            date: user.achievements?.includes('first_share') ? user.updatedAt.toISOString().split('T')[0] : null
-          },
-          {
-            id: 'five_shares',
-            name: '分享达人',
-            description: '分享5个作品',
-            icon: '📣',
-            unlocked: user.achievements?.includes('five_shares') || false,
-            date: user.achievements?.includes('five_shares') ? user.updatedAt.toISOString().split('T')[0] : null
-          }
-        ]
-      }
-    ]
     
     return ApiResponse.success(res, achievements)
     
@@ -338,87 +338,87 @@ router.get('/achievements', async (req, res) => {
   }
 })
 
-/**
- * 获取用户统计数据
- * GET /api/user/stats
- */
-router.get('/stats', async (req, res) => {
-  try {
-    const user = req.user
-    const { Gallery } = require('../models')
-    
-    // 获取用户作品数
-    const worksCount = await Gallery.countDocuments({ userId: user._id })
-    
-    // 获取等级信息
-    const levelInfo = user.getLevelInfo()
-    
-    // 计算探索时长（分钟转小时，保留1位小数）
-    const playTimeHours = Math.round((user.totalPlayTime || 0) / 60 * 10) / 10
-    
-    return ApiResponse.success(res, {
-      level: levelInfo.level,
-      levelName: levelInfo.name,
-      levelPoints: levelInfo.points,
-      levelProgress: levelInfo.progress,
-      totalProgress: levelInfo.totalProgress,
-      nextLevelPoints: levelInfo.nextLevelPoints,
-      totalPlayTime: playTimeHours,
-      totalScore: user.totalScore || 0,
-      worksCount: worksCount,
-      collectionCount: user.collectedKnowledge?.length || 0,
-      achievementCount: user.achievements?.length || 0,
-      unlockedDims: user.unlockedDims || [1]
-    })
-    
-  } catch (error) {
-    logger.error('获取用户统计失败:', error)
-    return ApiResponse.serverError(res, error.message)
-  }
-})
-
-/**
- * 获取用户作品列表
- * GET /api/user/works
- */
-router.get('/works', async (req, res) => {
-  try {
-    const user = req.user
-    const { page = 1, limit = 20 } = req.query
-    const { Gallery } = require('../models')
-    
-    const query = { userId: user._id }
-    
-    const total = await Gallery.countDocuments(query)
-    const works = await Gallery.find(query)
-      .sort({ createdAt: -1 })
-      .skip((parseInt(page) - 1) * parseInt(limit))
-      .limit(parseInt(limit))
-      .lean()
-    
-    // 格式化作品数据
-    const formattedWorks = works.map(work => ({
-      id: work._id,
-      title: work.title,
-      description: work.description,
-      imageUrl: work.imageUrl,
-      dimension: work.dimension,
-      status: work.status,
-      likes: work.likes || 0,
-      views: work.views || 0,
-      createdAt: work.createdAt
-    }))
-    
-    return ApiResponse.paginated(res, formattedWorks, {
-      page: parseInt(page),
-      limit: parseInt(limit),
-      total
-    })
-    
-  } catch (error) {
-    logger.error('获取用户作品失败:', error)
-    return ApiResponse.serverError(res, error.message)
-  }
-})
-
+/**
+ * 获取用户统计数据
+ * GET /api/user/stats
+ */
+router.get('/stats', async (req, res) => {
+  try {
+    const user = req.user
+    const { Gallery } = require('../models')
+    
+    // 获取用户作品数
+    const worksCount = await Gallery.countDocuments({ userId: user._id })
+    
+    // 获取等级信息
+    const levelInfo = user.getLevelInfo()
+    
+    // 计算探索时长（分钟转小时，保留1位小数）
+    const playTimeHours = Math.round((user.totalPlayTime || 0) / 60 * 10) / 10
+    
+    return ApiResponse.success(res, {
+      level: levelInfo.level,
+      levelName: levelInfo.name,
+      levelPoints: levelInfo.points,
+      levelProgress: levelInfo.progress,
+      totalProgress: levelInfo.totalProgress,
+      nextLevelPoints: levelInfo.nextLevelPoints,
+      totalPlayTime: playTimeHours,
+      totalScore: user.totalScore || 0,
+      worksCount: worksCount,
+      collectionCount: user.collectedKnowledge?.length || 0,
+      achievementCount: user.achievements?.length || 0,
+      unlockedDims: user.unlockedDims || [1]
+    })
+    
+  } catch (error) {
+    logger.error('获取用户统计失败:', error)
+    return ApiResponse.serverError(res, error.message)
+  }
+})
+
+/**
+ * 获取用户作品列表
+ * GET /api/user/works
+ */
+router.get('/works', async (req, res) => {
+  try {
+    const user = req.user
+    const { page = 1, limit = 20 } = req.query
+    const { Gallery } = require('../models')
+    
+    const query = { userId: user._id }
+    
+    const total = await Gallery.countDocuments(query)
+    const works = await Gallery.find(query)
+      .sort({ createdAt: -1 })
+      .skip((parseInt(page) - 1) * parseInt(limit))
+      .limit(parseInt(limit))
+      .lean()
+    
+    // 格式化作品数据
+    const formattedWorks = works.map(work => ({
+      id: work._id,
+      title: work.title,
+      description: work.description,
+      imageUrl: work.imageUrl,
+      dimension: work.dimension,
+      status: work.status,
+      likes: work.likes || 0,
+      views: work.views || 0,
+      createdAt: work.createdAt
+    }))
+    
+    return ApiResponse.paginated(res, formattedWorks, {
+      page: parseInt(page),
+      limit: parseInt(limit),
+      total
+    })
+    
+  } catch (error) {
+    logger.error('获取用户作品失败:', error)
+    return ApiResponse.serverError(res, error.message)
+  }
+})
+
 module.exports = router