Improve WeChat MP replies and ship MindSpace/H5 production updates.

Add WeChat service account routing with sync acks, connectivity tests, and context isolation; document deploy runbooks; and bundle related MindSpace, voice, Plaza, and server gateway changes for production rollout.

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

plaza-posts.mjs

@@ -32,7 +32,10 @@ function clampLimit(value, fallback = 20, max = 50) {
 }
 
 function normalizeSort(value) {
-  return String(value ?? 'hot') === 'new' ? 'new' : 'hot';
+  const raw = String(value ?? 'recommend').trim().toLowerCase();
+  if (raw === 'new') return 'new';
+  if (raw === 'hot') return 'hot';
+  return 'recommend';
 }
 
 function formatStats(row) {
@@ -45,6 +48,23 @@ function formatStats(row) {
   };
 }
 
+const FRESH_POST_WINDOW_MS = 24 * 60 * 60 * 1000;
+
+function promoteFreshPosts(items, now = Date.now()) {
+  const fresh = [];
+  const stable = [];
+  for (const post of items) {
+    const publishedAt = Date.parse(post.published_at);
+    if (Number.isFinite(publishedAt) && now - publishedAt <= FRESH_POST_WINDOW_MS) {
+      fresh.push(post);
+    } else {
+      stable.push(post);
+    }
+  }
+  fresh.sort((a, b) => Date.parse(b.published_at) - Date.parse(a.published_at));
+  return [...fresh, ...stable];
+}
+
 function formatPostRow(row, { category, viewerReacted = null, publicationUrl = null } = {}) {
   return {
     id: row.id,
@@ -88,6 +108,7 @@ export function createPlazaPostService(
     algorithmConfig = null,
     onPostPublished = null,
     loadFeaturedPosts = null,
+    recommendService = null,
   } = {},
 ) {
   const autoApprove = String(process.env.PLAZA_AUTO_APPROVE ?? '').toLowerCase() === 'true';
@@ -358,17 +379,28 @@ export function createPlazaPostService(
   };
 
   const listFeed = async ({
-    sort = 'hot',
+    sort = 'recommend',
     categorySlug = null,
     cursor = null,
     limit = 20,
     viewerId = null,
+    sessionId = null,
   } = {}) => {
     await ensureCategories();
     const normalizedSort = normalizeSort(sort);
     const pageLimit = clampLimit(limit);
 
-    if (!cursor && plazaRedis?.getFeedCache) {
+    if (normalizedSort === 'recommend' && recommendService) {
+      return recommendService.listRecommendedFeed({
+        viewerId,
+        sessionId,
+        categorySlug,
+        cursor,
+        limit: pageLimit,
+      });
+    }
+
+    if (!cursor && normalizedSort !== 'recommend' && plazaRedis?.getFeedCache) {
       const cached = await plazaRedis.getFeedCache(normalizedSort, categorySlug, null);
       if (cached?.posts) {
         if (viewerId && loadViewerReactions) {
@@ -471,6 +503,9 @@ export function createPlazaPostService(
         pageLimit,
       );
     }
+    if (!cursor && normalizedSort === 'hot') {
+      mergedPosts = promoteFreshPosts(mergedPosts).slice(0, pageLimit);
+    }
 
     const result = {
       posts: mergedPosts,
@@ -486,7 +521,7 @@ export function createPlazaPostService(
         categorySlug,
         null,
         {
-          posts: pageRows.map((row) => formatPostRow(row)),
+          posts: mergedPosts,
           featured: result.featured,
           next_cursor: result.next_cursor,
           has_more: result.has_more,