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>

server/server.js

@@ -1,3 +1,31 @@
+const fs = require('fs')
+const path = require('path')
+
+// Load local secrets from server/.env (gitignored). Never commit this file.
+function loadEnv() {
+  const file = path.join(__dirname, '.env')
+  if (!fs.existsSync(file)) return
+  fs.readFileSync(file, 'utf8')
+    .split('\n')
+    .forEach((line) => {
+      const text = line.trim()
+      if (!text || text.startsWith('#')) return
+      const i = text.indexOf('=')
+      if (i < 1) return
+      const key = text.slice(0, i).trim()
+      let value = text.slice(i + 1).trim()
+      if (
+        (value.startsWith('"') && value.endsWith('"')) ||
+        (value.startsWith("'") && value.endsWith("'"))
+      ) {
+        value = value.slice(1, -1)
+      }
+      if (!process.env[key]) process.env[key] = value
+    })
+}
+
+loadEnv()
+
 const app = require('./app')
 const db = require('./lib/db')
 
@@ -10,5 +38,7 @@ app.listen(PORT, () => {
   console.log(`管理后台 http://localhost:${PORT}/admin`)
   if (!process.env.WX_APPID || !process.env.WX_SECRET) {
     console.log('未配置 WX_APPID / WX_SECRET，小程序登录走演示模式')
+  } else {
+    console.log(`微信登录已启用 AppID ${process.env.WX_APPID}`)
   }
 })