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/plan-edit/plan-edit.js

@@ -1,8 +1,12 @@
 const app = getApp();
 const planSvc = require('../../services/plan');
 
-const EMOJIS = ['📋', '💪', '🔥', '🏋️', '🏃', '🧘', '🤸', '🥊', '🚴', '⚡', '🌟', '🎯'];
-const COLORS = ['#D9B36C', '#58C9B9', '#9B8CFF', '#F08A5D', '#3FBF7F', '#5B9DF9'];
+// UGC 计划图标选择器：Lucide 运动子集（非 emoji）
+const ICONS = ['clipboard-list', 'dumbbell', 'flame', 'accessibility', 'person-standing',
+  'bike', 'heart', 'target', 'trophy', 'medal', 'star', 'activity',
+  'sparkles', 'zap', 'trending-up', 'folder-open'];
+// 计划主题色：对齐 Kinetic Dark 语义色板
+const COLORS = ['#B6F24E', '#2BD9A6', '#4FA8FF', '#F2B53D', '#FF5C5C', '#9BA7A1'];
 
 Page({
   data: {
@@ -11,9 +15,9 @@ Page({
     id: '',
     name: '',
     description: '',
-    emoji: '📋',
-    color: '#D9B36C',
-    emojis: EMOJIS,
+    emoji: 'clipboard-list',
+    color: '#B6F24E',
+    emojis: ICONS,
     colors: COLORS,
     loading: false,
     dirty: false   // 是否有未保存的修改
@@ -29,8 +33,8 @@ Page({
         this.setData({
           name: p.name || '',
           description: p.description || '',
-          emoji: p.emoji || '📋',
-          color: p.color || '#D9B36C',
+          emoji: p.emoji || 'clipboard-list',
+          color: p.color || '#B6F24E',
           loading: false
         });
       }).catch(() => {

miniprogram/pages/plan-edit/plan-edit.json

@@ -1,6 +1,7 @@
 {
   "navigationStyle": "custom",
   "usingComponents": {
-    "navbar": "/components/navbar/index"
+    "navbar": "/components/navbar/index",
+    "fc-icon": "/components/fc-icon/index"
   }
 }

miniprogram/pages/plan-edit/plan-edit.wxml

@@ -3,7 +3,7 @@
 
   <view class="section">
     <view class="preview" style="background: linear-gradient(135deg, {{color}}26, var(--surface));">
-      <view class="preview__emoji" style="background: {{color}}22; color: {{color}};">{{emoji}}</view>
+      <view class="preview__emoji" style="background: {{color}}22; color: {{color}};"><fc-icon name="{{emoji}}" size="48" color="{{color}}" /></view>
       <view class="preview__name" style="color: {{color}};">{{name || '计划名称'}}</view>
       <view class="preview__desc">{{description || '计划描述（选填）'}}</view>
     </view>
@@ -40,7 +40,9 @@
           class="emoji {{emoji === item ? 'emoji--active' : ''}}"
           style="{{emoji === item ? 'border-color:' + color + '; background:' + color + '22;' : ''}}"
           data-emoji="{{item}}"
-          bindtap="onPickEmoji">{{item}}</view>
+          bindtap="onPickEmoji">
+          <fc-icon name="{{item}}" size="44" color="{{emoji === item ? color : 'var(--text)'}}" />
+        </view>
       </scroll-view>
     </view>
 

miniprogram/pages/plan-edit/plan-edit.wxss

@@ -41,7 +41,7 @@
 .savebar {
   position: fixed; left: 0; right: 0; bottom: 0;
   padding: 20rpx 32rpx;
-  background: rgba(14,17,16,0.92);
+  background: var(--bar-bg);
   backdrop-filter: blur(12px);
   border-top: 1rpx solid var(--line);
   padding-bottom: calc(20rpx + env(safe-area-inset-bottom));
@@ -49,6 +49,6 @@
 .savebar__btn {
   display: flex; align-items: center; justify-content: center;
   background: linear-gradient(135deg, var(--gold) 0%, var(--gold-2) 100%);
-  color: #0E1110; font-weight: 700; font-size: 32rpx;
+  color: var(--accent-on); font-weight: 700; font-size: 32rpx;
   border-radius: 999rpx; padding: 26rpx;
 }