feat: init fitness-coach (backend + miniprogram)

- backend: NestJS service with exercise/plan data
- miniprogram: WeChat mini program client
- exclude node_modules, dist, runtime data-store, local env

miniprogram/pages/collection-detail/collection-detail.js

@@ -0,0 +1,42 @@
+const app = getApp();
+const svc = require('../../services/exercise');
+
+Page({
+  data: {
+    statusBarHeight: 20,
+    slug: '',
+    collection: null,
+    exercises: [],
+    loading: true,
+    page: 1,
+    pageSize: 30,
+    total: 0
+  },
+
+  onLoad(query) {
+    const slug = query.slug || '';
+    this.setData({ statusBarHeight: app.globalData.statusBarHeight || 20, slug });
+    this.load();
+  },
+
+  load() {
+    this.setData({ loading: true });
+    svc.getCollectionExercises(this.data.slug, {
+      page: this.data.page,
+      pageSize: this.data.pageSize
+    }).then((res) => {
+      this.setData({
+        collection: res.collection,
+        exercises: (res && res.items) || [],
+        total: (res && res.total) || 0,
+        loading: false
+      });
+    }).catch(() => {
+      this.setData({ loading: false });
+    });
+  },
+
+  onExercise(e) {
+    wx.navigateTo({ url: '/pages/detail/detail?id=' + encodeURIComponent(e.detail.id) });
+  }
+});

miniprogram/pages/collection-detail/collection-detail.json

@@ -0,0 +1,7 @@
+{
+  "navigationStyle": "custom",
+  "usingComponents": {
+    "navbar": "/components/navbar/index",
+    "exercise-card": "/components/exercise-card/index"
+  }
+}

miniprogram/pages/collection-detail/collection-detail.wxml

@@ -0,0 +1,24 @@
+<view class="page" wx:if="{{collection}}">
+  <navbar title="{{collection.name}}" show-back />
+
+  <view class="header" style="background: linear-gradient(135deg, {{collection.color}}26, var(--surface));">
+    <view class="header__emoji" style="background: {{collection.color}}22; color: {{collection.color}};">{{collection.emoji}}</view>
+    <view class="header__name">{{collection.name}}</view>
+    <view class="header__desc">{{collection.description}}</view>
+    <view class="header__count" style="color: {{collection.color}};">共 {{total}} 个动作</view>
+  </view>
+
+  <view class="section" style="padding-top: 8rpx;">
+    <view class="grid" wx:if="{{exercises.length}}">
+      <view class="grid__item" wx:for="{{exercises}}" wx:key="id">
+        <exercise-card exercise="{{item}}" bind:tap="onExercise" />
+      </view>
+    </view>
+    <view wx:elif="{{!loading}}" class="empty">暂无数据</view>
+    <view wx:else class="empty">加载中…</view>
+  </view>
+</view>
+
+<view wx:else class="empty-page">
+  <view class="empty">{{ loading ? '加载中…' : '未找到该训练组合' }}</view>
+</view>

miniprogram/pages/collection-detail/collection-detail.wxss

@@ -0,0 +1,14 @@
+.page { min-height: 100vh; background: var(--bg-grad); padding-bottom: 60rpx; }
+.header { padding: 32rpx; border-bottom: 1rpx solid var(--line); }
+.header__emoji {
+  width: 120rpx; height: 120rpx; border-radius: 28rpx;
+  display: flex; align-items: center; justify-content: center; font-size: 64rpx;
+}
+.header__name { font-size: 44rpx; font-weight: 700; margin-top: 20rpx; }
+.header__desc { font-size: 26rpx; color: var(--text-2); margin-top: 12rpx; line-height: 1.5; }
+.header__count { font-size: 24rpx; margin-top: 16rpx; }
+
+.grid { display: flex; flex-wrap: wrap; gap: 18rpx; }
+.grid__item { width: calc((100% - 18rpx) / 2); }
+.empty { color: var(--text-3); font-size: 26rpx; text-align: center; padding: 120rpx 0; }
+.empty-page { min-height: 100vh; background: var(--bg-grad); }