feat(wechat): add subscribe morning reminder, plaza welcome, and LLM fallback

Enable daily morning greeting on reply 1 (with custom time, modify, and cancel),
random greeting delivery, M发现 in subscribe welcome, and optional LLM parsing when
rules miss. Also fix WeChat MP draft/config error passthrough and add Tang E2E scripts.

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

server/portal-integration-services-bootstrap.mjs

@@ -35,6 +35,7 @@ export async function bootstrapPortalIntegrationServices({
   taskUnifiedService = null,
   sessionSnapshotService = null,
   wechatScheduleLlmConfigService,
+  wechatSubscribeMorningLlmConfigService = null,
   wechatScheduledTaskManageLlmConfigService = null,
   wechatIntentRouter = null,
   wechatCursorExecutorPolicyService = null,
@@ -189,6 +190,7 @@ export async function bootstrapPortalIntegrationServices({
           ? taskUnifiedService
           : null,
       wechatScheduleLlmConfigService,
+      wechatSubscribeMorningLlmConfigService,
       wechatScheduledTaskManageLlmConfigService,
       llmProviderService,
       chatIntentRouter,

server/portal-memory-session-services-bootstrap.mjs

@@ -11,6 +11,7 @@ import { isSessionStreamReplayEnabled } from '../session-stream.mjs';
 import { createSkillRuntimeAdminConfigService } from '../skill-runtime-admin-config.mjs';
 import { createSystemDisclosurePolicyService } from '../system-disclosure-policy.mjs';
 import { createWechatScheduleLlmConfigService } from '../wechat-schedule-llm-config.mjs';
+import { createWechatSubscribeMorningLlmConfigService } from '../wechat-subscribe-morning-llm-config.mjs';
 import { createWechatScheduledTaskManageLlmConfigService } from '../wechat-scheduled-task-manage-llm-config.mjs';
 import { createWechatIntentRouterConfigService } from '../wechat-intent-router-config.mjs';
 import { createManagedWechatIntentRouter } from '../wechat-intent-router.mjs';
@@ -35,6 +36,8 @@ export async function bootstrapPortalMemorySessionServices({
     createAgentCodeRunAdminConfigService,
   createWechatScheduleLlmConfigServiceFn =
     createWechatScheduleLlmConfigService,
+  createWechatSubscribeMorningLlmConfigServiceFn =
+    createWechatSubscribeMorningLlmConfigService,
   createWechatScheduledTaskManageLlmConfigServiceFn =
     createWechatScheduledTaskManageLlmConfigService,
   createWechatIntentRouterConfigServiceFn =
@@ -84,6 +87,8 @@ export async function bootstrapPortalMemorySessionServices({
     createAgentCodeRunAdminConfigServiceFn(pool, { env });
   const wechatScheduleLlmConfigService =
     createWechatScheduleLlmConfigServiceFn(pool);
+  const wechatSubscribeMorningLlmConfigService =
+    createWechatSubscribeMorningLlmConfigServiceFn(pool);
   const wechatScheduledTaskManageLlmConfigService =
     createWechatScheduledTaskManageLlmConfigServiceFn(pool);
   const wechatIntentRouterConfigService =
@@ -168,6 +173,7 @@ export async function bootstrapPortalMemorySessionServices({
     systemDisclosurePolicyService,
     agentCodeRunPolicyService,
     wechatScheduleLlmConfigService,
+    wechatSubscribeMorningLlmConfigService,
     wechatScheduledTaskManageLlmConfigService,
     wechatIntentRouterConfigService,
     wechatCursorExecutorPolicyService,