Add smart ACK provider for WeChat MP replies

Replace fixed ackText with a rule-based AckProvider that picks
response templates by message type and intent (translate, summary,
rewrite, poster, ppt, mindmap, code, search, schedule). Pure sync,
zero I/O, auto-falls back to config.ackText on any error.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

local_restart.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+LOG_DIR="${ROOT_DIR}/logs"
+LOG_FILE="${LOG_DIR}/local_restart.log"
+mkdir -p "${LOG_DIR}"
+
+if ! command -v pnpm >/dev/null 2>&1; then
+  echo "pnpm not found"
+  exit 1
+fi
+
+cd "${ROOT_DIR}"
+
+echo "Starting Memind local stack via pnpm dev..."
+nohup pnpm dev >"${LOG_FILE}" 2>&1 &
+echo $! > "${LOG_DIR}/local_restart.pid"
+
+echo "Started."
+echo "Log: ${LOG_FILE}"
+echo "MindSpace: http://127.0.0.1:5173/?preview=mindspace"
+echo "API / Portal: http://127.0.0.1:8081"
+echo "Ops: http://127.0.0.1:3002/ops/"
+echo "Admin: http://127.0.0.1:8082"