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>

scripts/deploy-plaza-105.sh

@@ -12,7 +12,7 @@
 #   pnpm deploy:plaza-105 -- --no-restart
 #
 # 前置：
-#   1. DNS: plaza.tkmind.cn A → 120.26.184.105
+#   1. DNS: plaza.tkmind.cn A → 120.26.184.105（公网入口；部署链路本身由 ssh105(Tailscale) 触达）
 #   2. H5 已部署：pnpm deploy:105（提供 Plaza API + 登录 + 发布页）
 #   3. 可选：cp deploy/plaza-105/plaza-105.env.example deploy/plaza-105/plaza-105.env
 set -euo pipefail
@@ -23,7 +23,7 @@ DEPLOY_ENV="${DEPLOY_DIR}/plaza-105.env"
 EXCLUDE="${ROOT}/scripts/.rsync-exclude-plaza-web"
 
 PLAZA_APP_DIR="${PLAZA_APP_DIR:-${ROOT}/../tkmind_go/ui/plaza}"
-PLAZA_DEPLOY_HOST="${PLAZA_DEPLOY_HOST:-root@120.26.184.105}"
+PLAZA_DEPLOY_HOST="${PLAZA_DEPLOY_HOST:-root@ssh105}"
 PLAZA_REMOTE_DIR="${PLAZA_REMOTE_DIR:-/root/plaza/web}"
 PLAZA_PROD_URL="${PLAZA_PROD_URL:-https://plaza.tkmind.cn}"
 PLAZA_PORT="${PLAZA_PORT:-3002}"