feat: Kinetic Dark 设计语言 + Lucide 图标迁移 + 首页轻量个性化

- 建立 Lucide 子集 iconfont（49 字形），全站 emoji 替换为 fc-icon 组件
- 重塑 Design Token（冷中性近黑底 + Volt 荧光绿 #B6F24E），消除硬编码颜色
- 首页登录后个性化：我的计划 / 我的收藏 / 今日推荐（纯前端复用现有 API）
- 后端 DEFAULT_EMOJI→Lucide 名，PALETTE 对齐 Kinetic Dark 语义色板
- 修复 person-standing 缺失字形；14 个官方组合 seed emoji 全部映射到现有字形

miniprogram/pages/index/index.js

@@ -1,5 +1,22 @@
 const app = getApp();
 const svc = require('../../services/exercise');
+const planSvc = require('../../services/plan');
+const favSvc = require('../../services/favorite');
+const { iconName } = require('../../utils/icon-name');
+
+function greeting() {
+  const h = new Date().getHours();
+  if (h < 6) return '夜深了，';
+  if (h < 11) return '早上好，';
+  if (h < 13) return '中午好，';
+  if (h < 18) return '下午好，';
+  if (h < 22) return '晚上好，';
+  return '夜深了，';
+}
+
+function isLogin() {
+  return !!wx.getStorageSync('access_token');
+}
 
 Page({
   data: {
@@ -11,13 +28,19 @@ Page({
     collections: [],
     loading: true,
     quickEntries: [
-      { key: 'recommend', label: '智能推荐', emoji: '✨', url: '/pages/recommend/recommend' },
-      { key: 'bodyPart', label: '按部位', emoji: '💪', url: '/pages/category/category?dimension=bodyPart' },
-      { key: 'equipment', label: '按器械', emoji: '🏋️', url: '/pages/category/category?dimension=equipment' },
-      { key: 'official', label: '官方计划', emoji: '📋', url: '/pages/collection/collection' },
-      { key: 'myPlans', label: '我的计划', emoji: '🗂️', url: '/pages/my-plans/my-plans' },
-      { key: 'mine', label: '我的', emoji: '👤', url: '/pages/profile/profile' }
-    ]
+      { key: 'recommend', label: '智能推荐', icon: 'sparkles', url: '/pages/recommend/recommend' },
+      { key: 'bodyPart', label: '按部位', icon: 'accessibility', url: '/pages/category/category?dimension=bodyPart' },
+      { key: 'equipment', label: '按器械', icon: 'dumbbell', url: '/pages/category/category?dimension=equipment' },
+      { key: 'official', label: '官方计划', icon: 'clipboard-list', url: '/pages/collection/collection' },
+      { key: 'myPlans', label: '我的计划', icon: 'folder-open', url: '/pages/my-plans/my-plans' },
+      { key: 'mine', label: '我的', icon: 'user', url: '/pages/profile/profile' }
+    ],
+    // —— 轻量个性化（登录后）——
+    isLogin: false,
+    greeting: '',
+    myPlans: [],
+    myFavorites: [],
+    todayRecommend: []
   },
 
   onLoad() {
@@ -25,6 +48,11 @@ Page({
     this.loadData();
   },
 
+  onShow() {
+    // tab 切回：已登录则静默刷新个性化（优先缓存）
+    if (isLogin()) this.loadPersonal(true);
+  },
+
   loadData() {
     this.setData({ loading: true });
     Promise.all([
@@ -32,19 +60,70 @@ Page({
       svc.listExercises({ pageSize: 8 }).catch(() => ({ items: [] })),
       svc.listCollections().catch(() => [])
     ]).then(([stats, list, collections]) => {
+      const cols = (collections || []).map((c) => ({
+        ...c,
+        icon: iconName(c.emoji)
+      }));
       this.setData({
         stats,
         bodyParts: (stats && stats.bodyParts) || [],
         equipment: (stats && stats.equipment) || [],
         featured: (list && list.items) || [],
-        collections: collections || [],
+        collections: cols,
         loading: false
       });
+      if (isLogin()) this.loadPersonal(false);
     }).catch(() => {
       this.setData({ loading: false });
     });
   },
 
+  // 轻量个性化：复用现有 API，纯前端聚合；silent=切 tab 静默刷新
+  loadPersonal(silent) {
+    if (!isLogin()) return;
+    this.setData({ isLogin: true, greeting: greeting() });
+    if (!silent) this.setData({ personalLoading: true });
+
+    const CACHE_KEY = 'fc_personal_cache';
+    const cached = wx.getStorageSync(CACHE_KEY);
+    const now = Date.now();
+    if (cached && now - (cached.ts || 0) < 5 * 60 * 1000 && !silent) {
+      this.applyPersonal(cached.data);
+      return;
+    }
+
+    Promise.all([
+      planSvc.listMine().catch(() => []),
+      favSvc.listExercises().catch(() => [])
+    ]).then(([plans, favs]) => {
+      const planArr = Array.isArray(plans) ? plans : (plans && plans.items) || [];
+      const favArr = Array.isArray(favs) ? favs : (favs && favs.items) || [];
+      const data = {
+        myPlans: planArr.slice(0, 3).map((p) => ({
+          id: p.id, name: p.name, count: p.exerciseCount || 0
+        })),
+        myFavorites: favArr.slice(0, 6),
+        todayRecommend: (this.data.featured || []).slice(0, 3).map((e) => ({
+          id: e.id, name: e.displayName || e.name,
+          reason: '为你精选 · 高效入门'
+        }))
+      };
+      wx.setStorageSync(CACHE_KEY, { ts: now, data });
+      this.applyPersonal(data);
+    }).catch(() => {
+      this.setData({ personalLoading: false });
+    });
+  },
+
+  applyPersonal(data) {
+    this.setData({
+      myPlans: data.myPlans,
+      myFavorites: data.myFavorites,
+      todayRecommend: data.todayRecommend,
+      personalLoading: false
+    });
+  },
+
   goRecommend() {
     wx.navigateTo({ url: '/pages/recommend/recommend' });
   },
@@ -57,6 +136,17 @@ Page({
     wx.navigateTo({ url: '/pages/search/search' });
   },
 
+  onPlanTap(e) {
+    const id = e.currentTarget.dataset.id;
+    if (id) wx.navigateTo({ url: '/pages/plan-detail/plan-detail?id=' + encodeURIComponent(id) });
+  },
+
+  onExercise(e) {
+    const id = (e.detail && e.detail.id) || (e.currentTarget && e.currentTarget.dataset.id);
+    if (!id) return;
+    wx.navigateTo({ url: '/pages/detail/detail?id=' + encodeURIComponent(id) });
+  },
+
   onScanBodyPart(e) {
     const { value, label } = e.currentTarget.dataset;
     wx.navigateTo({
@@ -78,12 +168,5 @@ Page({
       url: '/pages/collection-detail/collection-detail?slug=' +
         encodeURIComponent(e.currentTarget.dataset.slug)
     });
-  },
-
-  onExercise(e) {
-    if (!e || !e.detail || !e.detail.id) return;
-    wx.navigateTo({
-      url: '/pages/detail/detail?id=' + encodeURIComponent(e.detail.id)
-    });
   }
 });