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>

ops/src/components/OpsLayout.tsx

@@ -30,13 +30,22 @@ export function OpsLayout() {
           </NavLink>
         ))}
         {user?.role === 'admin' ? (
-          <NavLink
-            to="/admin"
-            className={({ isActive }) => (isActive ? 'active' : undefined)}
-            style={{ marginLeft: 'auto', opacity: 0.75 }}
-          >
-            ⚙ 超管
-          </NavLink>
+          <>
+            <NavLink
+              to="/admin/wechat"
+              className={({ isActive }) => (isActive ? 'active' : undefined)}
+              style={{ marginLeft: 'auto' }}
+            >
+              通知推送
+            </NavLink>
+            <NavLink
+              to="/admin"
+              className={({ isActive }) => (isActive ? 'active' : undefined)}
+              style={{ opacity: 0.75 }}
+            >
+              ⚙ 超管
+            </NavLink>
+          </>
         ) : null}
       </nav>
       <Outlet />