fix(webchat): sessions persist after reconnects (#89017)

* fix(gateway): preserve asserted webchat sessions

* test(gateway): cover stale asserted webchat sessions

* fix(gateway): scope webchat session resume

* chore(protocol): refresh chat send models

* fix: document reconnect session resume protocol

* fix(gateway): keep reconnect resume internal

* gateway: keep reconnect resume options internal

* test(ui): avoid private resume marker lint access

src/plugins/contracts/plugin-sdk-subpaths.test.ts

@@ -23,6 +23,7 @@ import type {
   PluginRuntime as CorePluginRuntime,
 } from "openclaw/plugin-sdk/core";
 import * as providerEntrySdk from "openclaw/plugin-sdk/provider-entry";
+import type { GetReplyOptions as ReplyRuntimeGetReplyOptions } from "openclaw/plugin-sdk/reply-runtime";
 import * as zalouserSdk from "openclaw/plugin-sdk/zalouser";
 import ts from "typescript";
 import { beforeAll, describe, expect, expectTypeOf, it } from "vitest";
@@ -625,6 +626,8 @@ describe("plugin-sdk subpath exports", () => {
         "clearHistoryEntriesIfEnabled",
         "recordPendingHistoryEntryIfEnabled",
         "DEFAULT_GROUP_HISTORY_LIMIT",
+        "requestedSessionId",
+        "resumeRequestedSession",
       ],
     });
     expectSourceMentions("account-helpers", ["createAccountListHelpers"]);
@@ -1337,6 +1340,11 @@ describe("plugin-sdk subpath exports", () => {
     expectTypeOf<CoreOpenClawPluginApi>().toMatchTypeOf<SharedOpenClawPluginApi>();
     expectTypeOf<CorePluginRuntime>().toMatchTypeOf<SharedPluginRuntime>();
     expectTypeOf<CoreChannelMessageActionContext>().toMatchTypeOf<SharedChannelMessageActionContext>();
+    type PrivateResumeOptionKeys = Extract<
+      keyof ReplyRuntimeGetReplyOptions,
+      "requestedSessionId" | "resumeRequestedSession"
+    >;
+    expectTypeOf<PrivateResumeOptionKeys>().toEqualTypeOf<never>();
   });
 
   it("keeps runtime entry subpaths importable", async () => {