Ship signup sheet, subscribe reminders, cover crop, and theme updates.

Wire real WeChat app config, prefer activity cover over posters, and add admin cover cropping for the home banner.

Co-authored-by: Cursor <cursoragent@cursor.com>

miniprogram/pages/detail/detail.js

@@ -5,7 +5,8 @@ const activityUtil = require('../../utils/activity')
 Page({
   data: {
     activity: null,
-    failed: false
+    failed: false,
+    signupOpen: false
   },
 
   onLoad(query) {
@@ -36,8 +37,13 @@ Page({
     activityUtil.openMap(this.data.activity)
   },
 
-  goSignup() {
-    activityUtil.goSignup(this.data.activity)
+  openSignup() {
+    if (!this.data.activity || this.data.activity.status === 'past') return
+    this.setData({ signupOpen: true })
+  },
+
+  closeSignup() {
+    this.setData({ signupOpen: false })
   },
 
   goHome() {

miniprogram/pages/detail/detail.json

@@ -1,6 +1,7 @@
 {
   "navigationBarTitleText": "卓米会",
   "usingComponents": {
-    "activity-board": "/components/activity-board/index"
+    "activity-board": "/components/activity-board/index",
+    "signup-sheet": "/components/signup-sheet/index"
   }
 }

miniprogram/pages/detail/detail.wxml

@@ -1,10 +1,16 @@
-<activity-board
-  wx:if="{{activity}}"
-  activity="{{activity}}"
-  show-past="{{false}}"
-  bind:map="openMap"
-  bind:signup="goSignup"
-/>
+<block wx:if="{{activity}}">
+  <activity-board
+    activity="{{activity}}"
+    show-past="{{false}}"
+    bind:map="openMap"
+    bind:signup="openSignup"
+  />
+  <signup-sheet
+    show="{{signupOpen}}"
+    activity-id="{{activity.id}}"
+    bind:close="closeSignup"
+  />
+</block>
 <view wx:elif="{{failed}}" class="empty">
   <text>活动不存在或已下线</text>
   <view class="home" bindtap="goHome">回到首页</view>