fix(wechat): deliver failure notices and hot-swappable wechat-mp bundle

Notify users when HTML publish guards reject stub pages instead of silently
failing, send real page links when non-stub files exist, and split wechat-mp
into wechat-mp.bundle.mjs for fast production updates without full portal rebuilds.

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

scripts/deploy-wechat-mp-prod.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+cd "$ROOT"
+
+HOST="${MEMIND_PROD_HOST:-john@58.38.22.103}"
+REMOTE_ROOT="${MEMIND_PROD_ROOT:-/Users/john/Project/Memind}"
+BUNDLE=".runtime/portal/wechat-mp.bundle.mjs"
+
+echo "[deploy-wechat-mp] build bundle"
+node scripts/build-wechat-mp-runtime.mjs
+
+if [[ ! -f "${BUNDLE}" ]]; then
+  echo "missing bundle: ${BUNDLE}" >&2
+  exit 1
+fi
+
+echo "[deploy-wechat-mp] upload ${BUNDLE} -> ${HOST}:${REMOTE_ROOT}/wechat-mp.bundle.mjs"
+scp "${BUNDLE}" "${HOST}:${REMOTE_ROOT}/wechat-mp.bundle.mjs"
+
+echo "[deploy-wechat-mp] restart portal"
+ssh "${HOST}" 'launchctl kickstart -k "gui/$(id -u)/cn.tkmind.memind-portal"'
+
+echo "[deploy-wechat-mp] health check"
+ssh "${HOST}" 'curl -s -o /dev/null -w "portal=%{http_code}\n" http://127.0.0.1:8081/api/status'
+
+echo "[deploy-wechat-mp] done"