diff --git a/packages/gateway-protocol/src/index.ts b/packages/gateway-protocol/src/index.ts
index ee189f400679..2e98ebac84cf 100644
--- a/packages/gateway-protocol/src/index.ts
+++ b/packages/gateway-protocol/src/index.ts
@@ -210,7 +210,9 @@ import {
   PluginsSessionActionParamsSchema,
   PluginsSessionActionResultSchema,
   type PluginsUiDescriptorsParams,
+  type PluginsUiDescriptorsResult,
   PluginsUiDescriptorsParamsSchema,
+  PluginsUiDescriptorsResultSchema,
   ErrorCodes,
   type EnvironmentSummary,
   EnvironmentSummarySchema,
@@ -880,6 +882,9 @@ export const validatePluginApprovalResolveParams = lazyCompile<PluginApprovalRes
 export const validatePluginsUiDescriptorsParams = lazyCompile<PluginsUiDescriptorsParams>(
   PluginsUiDescriptorsParamsSchema,
 );
+export const validatePluginsUiDescriptorsResult = lazyCompile<PluginsUiDescriptorsResult>(
+  PluginsUiDescriptorsResultSchema,
+);
 export const validatePluginsSessionActionParams = lazyCompile<PluginsSessionActionParams>(
   PluginsSessionActionParamsSchema,
 );
@@ -1133,6 +1138,7 @@ export {
   PluginsSessionActionParamsSchema,
   PluginsSessionActionResultSchema,
   PluginsUiDescriptorsParamsSchema,
+  PluginsUiDescriptorsResultSchema,
   ModelsListParamsSchema,
   SkillsStatusParamsSchema,
   ToolsCatalogParamsSchema,
diff --git a/src/config/sessions/session-accessor.test.ts b/src/config/sessions/session-accessor.test.ts
index ef7960f44693..4e2972a37d3c 100644
--- a/src/config/sessions/session-accessor.test.ts
+++ b/src/config/sessions/session-accessor.test.ts
@@ -993,7 +993,10 @@ describe("session accessor file-backed seam", () => {
     expect(updatedEntry?.outputTokens).toBeUndefined();
     expect(updatedEntry?.totalTokens).toBeUndefined();
     expect(updatedEntry?.totalTokensFresh).toBeUndefined();
-    expect(updates).toEqual([{ sessionFile: archived }]);
+    expect(updates).toEqual([
+      { sessionFile: archived },
+      { sessionFile: fs.realpathSync(manualTranscriptPath) },
+    ]);
   });
 
   it("keeps retained messages reachable through an out-of-window label", async () => {
diff --git a/src/config/sessions/session-accessor.ts b/src/config/sessions/session-accessor.ts
index 5865c5ad4835..f5b760fab34e 100644
--- a/src/config/sessions/session-accessor.ts
+++ b/src/config/sessions/session-accessor.ts
@@ -1148,6 +1148,7 @@ async function replaceTranscriptForManualCompact(
     throw err;
   }
   emitSessionTranscriptUpdate({ sessionFile: archived });
+  emitSessionTranscriptUpdate({ sessionFile: filePath });
   return archived;
 }
 
diff --git a/src/gateway/server-methods/plugin-host-hooks.ts b/src/gateway/server-methods/plugin-host-hooks.ts
index e4828d34b6b5..36bd52c3641b 100644
--- a/src/gateway/server-methods/plugin-host-hooks.ts
+++ b/src/gateway/server-methods/plugin-host-hooks.ts
@@ -9,6 +9,7 @@ import {
   validatePluginsSessionActionParams,
   validatePluginsSessionActionResult,
   validatePluginsUiDescriptorsParams,
+  validatePluginsUiDescriptorsResult,
 } from "../../../packages/gateway-protocol/src/index.js";
 import { formatErrorMessage } from "../../infra/errors.js";
 import { createSubsystemLogger } from "../../logging/subsystem.js";
@@ -54,13 +55,44 @@ export const pluginHostHookHandlers: GatewayRequestHandlers = {
       );
       return;
     }
-    const descriptors = (getActivePluginRegistry()?.controlUiDescriptors ?? []).map((entry) =>
-      Object.assign({}, entry.descriptor, {
+    const descriptors = (getActivePluginRegistry()?.controlUiDescriptors ?? []).map((entry) => {
+      const descriptor: Record<string, unknown> = {
+        id: entry.descriptor.id,
         pluginId: entry.pluginId,
         pluginName: entry.pluginName,
-      }),
-    );
-    respond(true, { ok: true, descriptors }, undefined);
+        surface: entry.descriptor.surface,
+        label: entry.descriptor.label,
+      };
+      if (entry.descriptor.description !== undefined) {
+        descriptor.description = entry.descriptor.description;
+      }
+      if (entry.descriptor.placement !== undefined) {
+        descriptor.placement = entry.descriptor.placement;
+      }
+      if (entry.descriptor.schema !== undefined) {
+        descriptor.schema = entry.descriptor.schema;
+      }
+      if (entry.descriptor.requiredScopes !== undefined) {
+        descriptor.requiredScopes = entry.descriptor.requiredScopes;
+      }
+      return descriptor;
+    });
+    const result = { ok: true, descriptors };
+    if (!validatePluginsUiDescriptorsResult(result)) {
+      log.warn("invalid plugins.uiDescriptors result", {
+        errors: validatePluginsUiDescriptorsResult.errors,
+      });
+      respond(
+        false,
+        undefined,
+        errorShape(
+          ErrorCodes.UNAVAILABLE,
+          `invalid plugins.uiDescriptors result: ${formatValidationErrors(validatePluginsUiDescriptorsResult.errors)}`,
+        ),
+      );
+      return;
+    }
+    respond(true, result, undefined);
   },
   "plugins.sessionAction": async ({ params, client, respond }) => {
     if (!validatePluginsSessionActionParams(params)) {
diff --git a/src/plugins/contracts/host-hooks.contract.test.ts b/src/plugins/contracts/host-hooks.contract.test.ts
index b59f02dfef06..8b192000254b 100644
--- a/src/plugins/contracts/host-hooks.contract.test.ts
+++ b/src/plugins/contracts/host-hooks.contract.test.ts
@@ -7,11 +7,13 @@ import {
 } from "openclaw/plugin-sdk/plugin-test-contracts";
 import { afterEach, describe, expect, it } from "vitest";
 import {
+  validatePluginsUiDescriptorsResult,
   validatePluginsUiDescriptorsParams,
   validateSessionsPluginPatchParams,
 } from "../../../packages/gateway-protocol/src/index.js";
 import { loadSessionStore, updateSessionStore, type SessionEntry } from "../../config/sessions.js";
 import { APPROVALS_SCOPE, READ_SCOPE, WRITE_SCOPE } from "../../gateway/operator-scopes.js";
+import { pluginHostHookHandlers } from "../../gateway/server-methods/plugin-host-hooks.js";
 import { buildGatewaySessionRow } from "../../gateway/session-utils.js";
 import { withTempConfig } from "../../gateway/test-temp-config.js";
 import { emitAgentEvent, resetAgentEventsForTest } from "../../infra/agent-events.js";
@@ -1892,6 +1894,84 @@ describe("host-hook fixture plugin contract", () => {
     ).toBe(false);
     expect(validatePluginsUiDescriptorsParams({})).toBe(true);
     expect(validatePluginsUiDescriptorsParams({ pluginId: "host-hook-fixture" })).toBe(false);
+    expect(
+      validatePluginsUiDescriptorsResult({
+        ok: true,
+        descriptors: [
+          {
+            id: "approval-panel",
+            pluginId: "host-hook-fixture",
+            surface: "session",
+            label: "Approval panel",
+          },
+        ],
+      }),
+    ).toBe(true);
+    expect(
+      validatePluginsUiDescriptorsResult({
+        ok: true,
+        descriptors: [
+          {
+            id: "approval-panel",
+            pluginId: "host-hook-fixture",
+            surface: "session",
+            label: "Approval panel",
+            leakedRegistryField: true,
+          },
+        ],
+      }),
+    ).toBe(false);
+  });
+
+  it("projects plugin UI descriptors through the strict gateway result shape", () => {
+    const { config, registry } = createPluginRegistryFixture();
+    registerTestPlugin({
+      registry,
+      config,
+      record: createPluginRecord({
+        id: "host-hook-fixture",
+        name: "Host Hook Fixture",
+      }),
+      register(api) {
+        api.registerControlUiDescriptor({
+          id: "approval-panel",
+          surface: "session",
+          label: "Approval panel",
+        });
+      },
+    });
+    const descriptorEntry = registry.registry.controlUiDescriptors?.[0];
+    if (!descriptorEntry) {
+      throw new Error("expected control UI descriptor registration");
+    }
+    Object.assign(descriptorEntry.descriptor, { leakedRegistryField: true });
+    setActivePluginRegistry(registry.registry);
+
+    const calls: Array<[boolean, unknown, unknown]> = [];
+    void pluginHostHookHandlers["plugins.uiDescriptors"]({
+      params: {},
+      respond: (ok: boolean, payload: unknown, error: unknown) => {
+        calls.push([ok, payload, error]);
+      },
+    } as never);
+
+    expect(calls).toHaveLength(1);
+    const [ok, payload, error] = calls[0] ?? [];
+    expect(ok).toBe(true);
+    expect(error).toBeUndefined();
+    expect(validatePluginsUiDescriptorsResult(payload)).toBe(true);
+    expect(payload).toEqual({
+      ok: true,
+      descriptors: [
+        {
+          id: "approval-panel",
+          pluginId: "host-hook-fixture",
+          pluginName: "Host Hook Fixture",
+          surface: "session",
+          label: "Approval panel",
+        },
+      ],
+    });
   });
 
   it("enforces command requiredScopes for gateway clients and command owners", async () => {