fix(agent): inject Shanghai time into each reply message

103 goosed harness_remember returns remembered:false, so session memory
never carried the time anchor. Prepend buildCurrentTimeAgentPrefix on every
H5 /reply and WeChat agent prompt so the model sees Asia/Shanghai clock.

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

tkmind-proxy.mjs

@@ -11,7 +11,7 @@ import {
   PUBLISH_ROOT_DIR,
   resolvePublicBaseUrl,
 } from './user-publish.mjs';
-import { buildTaskRoutingAgentText } from './user-memory-profile.mjs';
+import { buildCurrentTimeAgentPrefix, buildTaskRoutingAgentText } from './user-memory-profile.mjs';
 import { reconcileAgentSession } from './session-reconcile.mjs';
 import { createImgproxySigner } from './imgproxy-signer.mjs';
 
@@ -343,11 +343,11 @@ function messageHasImages(userMessage) {
   return extractImageUrlsFromMessage(userMessage).length > 0;
 }
 
-function injectTaskRoutingHint(body, sessionPolicy) {
+function prependAgentTextToUserMessage(body, transformText) {
   const originalText = firstUserText(body?.user_message);
   if (!originalText?.trim()) return body;
 
-  const agentText = buildTaskRoutingAgentText(originalText, sessionPolicy);
+  const agentText = transformText(originalText);
   if (!agentText || agentText === originalText) return body;
 
   const userMessage = body.user_message ?? {};
@@ -377,6 +377,20 @@ function injectTaskRoutingHint(body, sessionPolicy) {
   };
 }
 
+function injectCurrentTimeAnchor(body, timezone) {
+  const tz = String(timezone ?? process.env.H5_DEFAULT_TIMEZONE ?? 'Asia/Shanghai').trim() || 'Asia/Shanghai';
+  return prependAgentTextToUserMessage(body, (originalText) => {
+    if (originalText.includes('TKMind 当前时间基准')) return originalText;
+    return `${buildCurrentTimeAgentPrefix({ timezone: tz })}${originalText}`;
+  });
+}
+
+function injectTaskRoutingHint(body, sessionPolicy) {
+  return prependAgentTextToUserMessage(body, (originalText) =>
+    buildTaskRoutingAgentText(originalText, sessionPolicy),
+  );
+}
+
 export async function buildVisionPayload({
   userMessage,
   userId,
@@ -1336,8 +1350,12 @@ export function createTkmindProxy({
 
       let baseBody = req.body;
       if (isReplyPath && !policyState.unrestricted) {
+        const publishLayout = await userAuth
+          .getUserPublishLayout(req.currentUser.id)
+          .catch(() => null);
+        baseBody = injectCurrentTimeAnchor(req.body, publishLayout?.timezone);
         baseBody = injectTaskRoutingHint(
-          req.body,
+          baseBody,
           await userAuth.getAgentSessionPolicy(req.currentUser.id),
         );
       }