diff --git a/src/channels/plugins/contracts/test-helpers/channel-catalog-contract.ts b/src/channels/plugins/contracts/test-helpers/channel-catalog-contract.ts
index 999d0922ef4..bbdfa0ef295 100644
--- a/src/channels/plugins/contracts/test-helpers/channel-catalog-contract.ts
+++ b/src/channels/plugins/contracts/test-helpers/channel-catalog-contract.ts
@@ -1,7 +1,7 @@
 import fs from "node:fs";
-import os from "node:os";
 import path from "node:path";
 import { describe, expect, it } from "vitest";
+import { resolvePreferredOpenClawTmpDir } from "../../../../infra/tmp-openclaw-dir.js";
 import { getChannelPluginCatalogEntry, listChannelPluginCatalogEntries } from "../../catalog.js";
 
 type CatalogEntryMeta = {
@@ -44,7 +44,9 @@ export function describeBundledMetadataOnlyChannelCatalogContract(params: {
 }) {
   describe(`${params.pluginId} bundled metadata-only channel catalog contract`, () => {
     it("includes the bundled metadata-only channel entry when the runtime entrypoint is omitted", () => {
-      const packageRoot = fs.mkdtempSync(path.join(os.tmpdir(), "openclaw-bundled-catalog-"));
+      const packageRoot = fs.mkdtempSync(
+        path.join(resolvePreferredOpenClawTmpDir(), "openclaw-bundled-catalog-"),
+      );
       const bundledDir = path.join(packageRoot, "dist", "extensions", params.pluginId);
       fs.mkdirSync(bundledDir, { recursive: true });
       fs.writeFileSync(
@@ -98,7 +100,9 @@ export function describeOfficialFallbackChannelCatalogContract(params: {
 }) {
   describe(`${params.channelId} official fallback channel catalog contract`, () => {
     it("includes shipped official channel catalog entries when bundled metadata is omitted", () => {
-      const dir = fs.mkdtempSync(path.join(os.tmpdir(), "openclaw-official-catalog-"));
+      const dir = fs.mkdtempSync(
+        path.join(resolvePreferredOpenClawTmpDir(), "openclaw-official-catalog-"),
+      );
       const catalogPath = path.join(dir, "channel-catalog.json");
       fs.writeFileSync(
         catalogPath,
@@ -131,7 +135,9 @@ export function describeOfficialFallbackChannelCatalogContract(params: {
     });
 
     it("lets external catalogs override shipped fallback channel metadata", () => {
-      const dir = fs.mkdtempSync(path.join(os.tmpdir(), "openclaw-fallback-catalog-"));
+      const dir = fs.mkdtempSync(
+        path.join(resolvePreferredOpenClawTmpDir(), "openclaw-fallback-catalog-"),
+      );
       const bundledDir = path.join(dir, "dist", "extensions", params.pluginId);
       const officialCatalogPath = path.join(dir, "channel-catalog.json");
       const externalCatalogPath = path.join(dir, "catalog.json");
@@ -208,7 +214,9 @@ export function describeOfficialFallbackChannelCatalogContract(params: {
     });
 
     it("surfaces package-name drift in external channel catalog install metadata", () => {
-      const dir = fs.mkdtempSync(path.join(os.tmpdir(), "openclaw-drifted-catalog-"));
+      const dir = fs.mkdtempSync(
+        path.join(resolvePreferredOpenClawTmpDir(), "openclaw-drifted-catalog-"),
+      );
       const catalogPath = path.join(dir, "catalog.json");
       fs.writeFileSync(
         catalogPath,
diff --git a/src/channels/plugins/contracts/test-helpers/channel-plugin-catalog-contract-suites.ts b/src/channels/plugins/contracts/test-helpers/channel-plugin-catalog-contract-suites.ts
index 45b010b7d85..fe55d518566 100644
--- a/src/channels/plugins/contracts/test-helpers/channel-plugin-catalog-contract-suites.ts
+++ b/src/channels/plugins/contracts/test-helpers/channel-plugin-catalog-contract-suites.ts
@@ -1,7 +1,7 @@
 import fs from "node:fs";
-import os from "node:os";
 import path from "node:path";
 import { describe, expect, it } from "vitest";
+import { resolvePreferredOpenClawTmpDir } from "../../../../infra/tmp-openclaw-dir.js";
 import { listChannelPluginCatalogEntries } from "../../catalog.js";
 
 function createCatalogEntry(params: {
@@ -122,7 +122,9 @@ export function describeChannelPluginCatalogEntriesContract() {
       {
         name: "includes external catalog entries",
         setup: () => {
-          const dir = fs.mkdtempSync(path.join(os.tmpdir(), "openclaw-catalog-"));
+          const dir = fs.mkdtempSync(
+            path.join(resolvePreferredOpenClawTmpDir(), "openclaw-catalog-"),
+          );
           const catalogPath = path.join(dir, "catalog.json");
           writeCatalogFile(
             catalogPath,
@@ -145,7 +147,7 @@ export function describeChannelPluginCatalogEntriesContract() {
         name: "preserves plugin ids when they differ from channel ids",
         setup: () => {
           const stateDir = fs.mkdtempSync(
-            path.join(os.tmpdir(), "openclaw-channel-catalog-state-"),
+            path.join(resolvePreferredOpenClawTmpDir(), "openclaw-channel-catalog-state-"),
           );
           writeDiscoveredChannelPlugin({
             stateDir,
@@ -168,7 +170,9 @@ export function describeChannelPluginCatalogEntriesContract() {
       {
         name: "keeps discovered plugins ahead of external catalog overrides",
         setup: () => {
-          const stateDir = fs.mkdtempSync(path.join(os.tmpdir(), "openclaw-catalog-state-"));
+          const stateDir = fs.mkdtempSync(
+            path.join(resolvePreferredOpenClawTmpDir(), "openclaw-catalog-state-"),
+          );
           const catalogPath = path.join(stateDir, "catalog.json");
           writeDiscoveredChannelPlugin({
             stateDir,
@@ -206,7 +210,9 @@ export function describeChannelPluginCatalogEntriesContract() {
       {
         name: "accepts rich external manifest entries with pinned npm metadata",
         setup: () => {
-          const dir = fs.mkdtempSync(path.join(os.tmpdir(), "openclaw-catalog-rich-"));
+          const dir = fs.mkdtempSync(
+            path.join(resolvePreferredOpenClawTmpDir(), "openclaw-catalog-rich-"),
+          );
           const catalogPath = path.join(dir, "catalog.json");
           fs.writeFileSync(
             catalogPath,
@@ -284,7 +290,9 @@ export function describeChannelPluginCatalogEntriesContract() {
       {
         name: "accepts rich external manifest entries for yuanbao with pinned npm metadata",
         setup: () => {
-          const dir = fs.mkdtempSync(path.join(os.tmpdir(), "openclaw-catalog-yuanbao-"));
+          const dir = fs.mkdtempSync(
+            path.join(resolvePreferredOpenClawTmpDir(), "openclaw-catalog-yuanbao-"),
+          );
           const catalogPath = path.join(dir, "catalog.json");
           fs.writeFileSync(
             catalogPath,
@@ -365,7 +373,9 @@ export function describeChannelPluginCatalogPathResolutionContract() {
       {
         name: "uses the provided env for external catalog path resolution",
         setup: () => {
-          const home = fs.mkdtempSync(path.join(os.tmpdir(), "openclaw-catalog-home-"));
+          const home = fs.mkdtempSync(
+            path.join(resolvePreferredOpenClawTmpDir(), "openclaw-catalog-home-"),
+          );
           const catalogPath = path.join(home, "catalog.json");
           writeCatalogFile(
             catalogPath,
@@ -391,7 +401,9 @@ export function describeChannelPluginCatalogPathResolutionContract() {
       {
         name: "uses the provided env for default catalog paths",
         setup: () => {
-          const stateDir = fs.mkdtempSync(path.join(os.tmpdir(), "openclaw-catalog-state-"));
+          const stateDir = fs.mkdtempSync(
+            path.join(resolvePreferredOpenClawTmpDir(), "openclaw-catalog-state-"),
+          );
           const catalogPath = path.join(stateDir, "plugins", "catalog.json");
           fs.mkdirSync(path.dirname(catalogPath), { recursive: true });
           writeCatalogFile(
diff --git a/src/channels/plugins/contracts/test-helpers/registry-session-binding.ts b/src/channels/plugins/contracts/test-helpers/registry-session-binding.ts
index 3591a8deaad..e13b47e7127 100644
--- a/src/channels/plugins/contracts/test-helpers/registry-session-binding.ts
+++ b/src/channels/plugins/contracts/test-helpers/registry-session-binding.ts
@@ -1,5 +1,4 @@
 import fs from "node:fs";
-import os from "node:os";
 import path from "node:path";
 import { expect } from "vitest";
 import type { OpenClawConfig } from "../../../../config/config.js";
@@ -8,6 +7,7 @@ import {
   type SessionBindingCapabilities,
   type SessionBindingRecord,
 } from "../../../../infra/outbound/session-binding-service.js";
+import { resolvePreferredOpenClawTmpDir } from "../../../../infra/tmp-openclaw-dir.js";
 import { setActivePluginRegistry } from "../../../../plugins/runtime.js";
 import { createTestRegistry } from "../../../../test-utils/channel-plugins.js";
 import { createChannelConversationBindingManager } from "../../conversation-bindings.js";
@@ -31,7 +31,7 @@ type SessionBindingContractEntry = {
 const contractApiPromises = new Map<string, Promise<Record<string, unknown>>>();
 
 const matrixSessionBindingStateDir = fs.mkdtempSync(
-  path.join(os.tmpdir(), "openclaw-matrix-session-binding-contract-"),
+  path.join(resolvePreferredOpenClawTmpDir(), "openclaw-matrix-session-binding-contract-"),
 );
 const matrixSessionBindingAuth = {
   accountId: "ops",