fix(gateway): restore dreaming startup reconciliation (#64258)

* gateway: restore dreaming startup reconciliation

* gateway: harden dreaming startup reconciliation

---------

Co-authored-by: mbelinky <mbelinky@users.noreply.github.com>

src/plugins/loader.test.ts

@@ -2,7 +2,12 @@ import fs from "node:fs";
 import path from "node:path";
 import { afterAll, afterEach, describe, expect, it, vi } from "vitest";
 import { applyPluginAutoEnable } from "../config/plugin-auto-enable.js";
-import { clearInternalHooks, getRegisteredEventKeys } from "../hooks/internal-hooks.js";
+import {
+  clearInternalHooks,
+  createInternalHookEvent,
+  getRegisteredEventKeys,
+  triggerInternalHook,
+} from "../hooks/internal-hooks.js";
 import { emitDiagnosticEvent } from "../infra/diagnostic-events.js";
 import { withEnv } from "../test-utils/env.js";
 import { clearPluginCommands, getPluginCommandSpecs } from "./command-registry-state.js";
@@ -1483,6 +1488,49 @@ module.exports = { id: "throws-after-import", register() {} };`,
     clearInternalHooks();
   });
 
+  it("replaces prior plugin hook registrations on activating reloads", async () => {
+    useNoBundledPlugins();
+    const plugin = writePlugin({
+      id: "internal-hook-reload",
+      filename: "internal-hook-reload.cjs",
+      body: `module.exports = {
+        id: "internal-hook-reload",
+        register(api) {
+          api.registerHook(
+            "gateway:startup",
+            (event) => {
+              event.messages.push("reload-hook-fired");
+            },
+            { name: "reload-hook" },
+          );
+        },
+      };`,
+    });
+
+    clearInternalHooks();
+
+    const loadOptions = {
+      cache: false,
+      workspaceDir: plugin.dir,
+      config: {
+        plugins: {
+          load: { paths: [plugin.file] },
+          allow: ["internal-hook-reload"],
+        },
+      },
+      onlyPluginIds: ["internal-hook-reload"],
+    } as const;
+
+    loadOpenClawPlugins(loadOptions);
+    loadOpenClawPlugins(loadOptions);
+
+    const event = createInternalHookEvent("gateway", "startup", "gateway:startup");
+    await triggerInternalHook(event);
+    expect(event.messages.filter((message) => message === "reload-hook-fired")).toHaveLength(1);
+
+    clearInternalHooks();
+  });
+
   it("can scope bundled provider loads to deepseek without hanging", () => {
     resetPluginLoaderTestStateForTest();