docs(context): note agent memory shadow setup for fusion E2E

Allow custom shadow portal probe messages and document admin-db steps to
enable recall_fusion_resolved without turning on active injection.

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

docs/context-runtime-local-dev.md

@@ -74,7 +74,24 @@ node scripts/run-context-runtime-shadow-portal-e2e.mjs
 # 通过 → CONTEXT_RUNTIME_SHADOW_PORTAL_OK
 ```
 
-`recall_fusion_resolved` 在 agent memory 关闭时可能缺失，脚本会 WARN 但不阻断。
+`recall_fusion_resolved` 需要 **agent memory resolve 开启**（admin-db `runtimeControl.agentResolveEnabled=true` + `agentInjectionMode=shadow`，**不要**开 `active` injection）。缺失时脚本 WARN 但不阻断。
+
+本地曾用（仅 dev，不入库）：
+
+```bash
+# admin-db 写入 shadow resolve（示例 one-shot）
+node -e "
+import { createDbPool } from './db.mjs';
+import { createMemoryV2AdminConfigService } from './memory-v2-admin-config.mjs';
+const pool = createDbPool();
+const svc = createMemoryV2AdminConfigService(pool);
+await svc.updateAdminConfig({
+  runtimeControl: { agentResolveEnabled: true, agentInjectionMode: 'shadow' },
+  chatIntentRouter: { memoryResolveEnabled: true },
+}, { updatedBy: 'local:context-runtime-shadow' });
+await pool.end();
+"
+```
 
 ## 用户自测清单（有 LLM 配额时）
 

scripts/run-context-runtime-shadow-portal-e2e.mjs

@@ -149,11 +149,16 @@ async function runPortalTurn(pool) {
       user_message: {
         id: randomUUID(),
         role: 'user',
-        content: [{ type: 'text', text: '帮我搜索一下今天上海的天气，简要回答即可' }],
+        content: [{
+          type: 'text',
+          text: process.env.MEMIND_SHADOW_E2E_MESSAGE
+            ?? '你还记得我的偏好吗，一句话回答即可',
+        }],
         metadata: {
           userVisible: true,
           agentVisible: true,
-          displayText: 'context runtime shadow agent ping',
+          displayText: process.env.MEMIND_SHADOW_E2E_DISPLAY
+            ?? 'context runtime shadow memory ping',
         },
       },
     }),