diff --git a/extensions/memory-core/src/cli.test.ts b/extensions/memory-core/src/cli.test.ts
index ed18abba760a..97351ae35f2a 100644
--- a/extensions/memory-core/src/cli.test.ts
+++ b/extensions/memory-core/src/cli.test.ts
@@ -5,6 +5,7 @@ import path from "node:path";
 import { Command } from "commander";
 import type { OpenClawConfig } from "openclaw/plugin-sdk/memory-core-host-engine-foundation";
 import { resolveSessionTranscriptsDirForAgent as resolveTestSessionTranscriptsDirForAgent } from "openclaw/plugin-sdk/memory-core-host-runtime-core";
+import { resetPluginStateStoreForTests } from "openclaw/plugin-sdk/plugin-state-test-runtime";
 import { upsertSessionEntry } from "openclaw/plugin-sdk/session-store-runtime";
 import { appendSessionTranscriptMessageByIdentity } from "openclaw/plugin-sdk/session-transcript-runtime";
 import { resolveOpenClawAgentSqlitePath } from "openclaw/plugin-sdk/sqlite-runtime";
@@ -161,6 +162,10 @@ afterAll(async () => {
   if (!fixtureRoot) {
     return;
   }
+  // The agent close releases its leases through shared state and reopens it, so the
+  // shared handle is released second; otherwise Windows fails the removal with EBUSY.
+  closeOpenClawAgentDatabasesForTest();
+  resetPluginStateStoreForTests();
   await fs.rm(fixtureRoot, { recursive: true, force: true });
   resetMemoryCoreDreamingStateForTests();
 });
diff --git a/extensions/memory-core/src/dreaming-startup-cleanup.test.ts b/extensions/memory-core/src/dreaming-startup-cleanup.test.ts
index f62a6bc613ff..07e1332eef4d 100644
--- a/extensions/memory-core/src/dreaming-startup-cleanup.test.ts
+++ b/extensions/memory-core/src/dreaming-startup-cleanup.test.ts
@@ -3,6 +3,7 @@ import os from "node:os";
 import path from "node:path";
 import type { OpenClawConfig } from "openclaw/plugin-sdk/config-contracts";
 import type { OpenClawPluginApi } from "openclaw/plugin-sdk/plugin-entry";
+import { resetPluginStateStoreForTests } from "openclaw/plugin-sdk/plugin-state-test-runtime";
 import { getSessionEntry, upsertSessionEntry } from "openclaw/plugin-sdk/session-store-runtime";
 import {
   appendSqliteSessionTranscriptEventForTest,
@@ -30,6 +31,7 @@ afterEach(async () => {
   vi.useRealTimers();
   vi.unstubAllEnvs();
   vi.restoreAllMocks();
+  resetPluginStateStoreForTests();
   await fs.rm(stateDir, { recursive: true, force: true });
 });
 
diff --git a/extensions/memory-core/src/memory/manager-sync-ops.startup-catchup.test.ts b/extensions/memory-core/src/memory/manager-sync-ops.startup-catchup.test.ts
index 6fa4607b57a4..cb4c7bfdbeb4 100644
--- a/extensions/memory-core/src/memory/manager-sync-ops.startup-catchup.test.ts
+++ b/extensions/memory-core/src/memory/manager-sync-ops.startup-catchup.test.ts
@@ -19,6 +19,7 @@ import {
   type MemorySyncParams,
   type MemorySyncProgressUpdate,
 } from "openclaw/plugin-sdk/memory-core-host-engine-storage";
+import { resetPluginStateStoreForTests } from "openclaw/plugin-sdk/plugin-state-test-runtime";
 import {
   clearConfigCache,
   clearRuntimeConfigSnapshot,
@@ -413,6 +414,10 @@ describe("session startup catch-up", () => {
     }
     startupHarnessDatabases.clear();
     closeOpenClawAgentDatabasesForTest();
+    // Closing the agent databases releases their leases through shared state, which
+    // reopens it, so the shared handle has to be released after that and before the
+    // removal or Windows fails the unlink with EBUSY.
+    resetPluginStateStoreForTests();
     await fs.rm(stateDir, { recursive: true, force: true });
   });
 
diff --git a/extensions/memory-core/src/memory/manager.fts-only-reindex.test.ts b/extensions/memory-core/src/memory/manager.fts-only-reindex.test.ts
index 4b0321cb7246..c1da516b39f2 100644
--- a/extensions/memory-core/src/memory/manager.fts-only-reindex.test.ts
+++ b/extensions/memory-core/src/memory/manager.fts-only-reindex.test.ts
@@ -4,7 +4,9 @@ import os from "node:os";
 import path from "node:path";
 import { DatabaseSync } from "node:sqlite";
 import type { OpenClawConfig } from "openclaw/plugin-sdk/memory-core-host-engine-foundation";
+import { resetPluginStateStoreForTests } from "openclaw/plugin-sdk/plugin-state-test-runtime";
 import { resolveOpenClawAgentSqlitePath } from "openclaw/plugin-sdk/sqlite-runtime";
+import { closeOpenClawAgentDatabasesForTest } from "openclaw/plugin-sdk/sqlite-runtime-testing";
 import { afterAll, afterEach, beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
 import { closeAllMemorySearchManagers, getMemorySearchManager } from "./index.js";
 import type { MemoryIndexMeta } from "./manager-reindex-state.js";
@@ -107,6 +109,10 @@ describe("memory manager FTS-only reindex", () => {
 
   afterAll(async () => {
     await closeAllMemorySearchManagers();
+    // The agent close releases its leases through shared state and reopens it, so the
+    // shared handle is released second; otherwise Windows fails the removal with EBUSY.
+    closeOpenClawAgentDatabasesForTest();
+    resetPluginStateStoreForTests();
     if (fixtureRoot) {
       await fs.rm(fixtureRoot, { recursive: true, force: true });
     }
diff --git a/extensions/memory-core/src/memory/manager.reindex-recovery.test.ts b/extensions/memory-core/src/memory/manager.reindex-recovery.test.ts
index 99472a5eda27..326c461a2fb6 100644
--- a/extensions/memory-core/src/memory/manager.reindex-recovery.test.ts
+++ b/extensions/memory-core/src/memory/manager.reindex-recovery.test.ts
@@ -4,7 +4,9 @@ import os from "node:os";
 import path from "node:path";
 import { DatabaseSync } from "node:sqlite";
 import type { OpenClawConfig } from "openclaw/plugin-sdk/memory-core-host-engine-foundation";
+import { resetPluginStateStoreForTests } from "openclaw/plugin-sdk/plugin-state-test-runtime";
 import { resolveOpenClawAgentSqlitePath } from "openclaw/plugin-sdk/sqlite-runtime";
+import { closeOpenClawAgentDatabasesForTest } from "openclaw/plugin-sdk/sqlite-runtime-testing";
 import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
 import { resetEmbeddingMocks } from "./embedding.test-mocks.js";
 import { acquireMemoryReindexLock } from "./manager-reindex-lock.js";
@@ -52,6 +54,10 @@ describe("memory manager reindex recovery", () => {
     }
     const { closeAllMemorySearchManagers } = await import("./index.js");
     await closeAllMemorySearchManagers();
+    // The agent close releases its leases through shared state and reopens it, so the
+    // shared handle is released second; otherwise Windows fails the removal with EBUSY.
+    closeOpenClawAgentDatabasesForTest();
+    resetPluginStateStoreForTests();
     await fs.rm(fixtureRoot, { recursive: true, force: true });
   });
 
diff --git a/extensions/memory-core/src/memory/manager.self-heal-missing-identity.test.ts b/extensions/memory-core/src/memory/manager.self-heal-missing-identity.test.ts
index 7979ac373a66..ae84a0a2269d 100644
--- a/extensions/memory-core/src/memory/manager.self-heal-missing-identity.test.ts
+++ b/extensions/memory-core/src/memory/manager.self-heal-missing-identity.test.ts
@@ -3,7 +3,9 @@ import os from "node:os";
 import path from "node:path";
 import { DatabaseSync } from "node:sqlite";
 import type { OpenClawConfig } from "openclaw/plugin-sdk/memory-core-host-engine-foundation";
+import { resetPluginStateStoreForTests } from "openclaw/plugin-sdk/plugin-state-test-runtime";
 import { resolveOpenClawAgentSqlitePath } from "openclaw/plugin-sdk/sqlite-runtime";
+import { closeOpenClawAgentDatabasesForTest } from "openclaw/plugin-sdk/sqlite-runtime-testing";
 import { afterAll, afterEach, beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
 import { closeAllMemorySearchManagers, getMemorySearchManager } from "./index.js";
 import type { MemoryIndexManager } from "./manager.js";
@@ -78,6 +80,10 @@ describe("memory manager self-heal missing identity with FTS-only chunks", () =>
 
   afterAll(async () => {
     await closeAllMemorySearchManagers();
+    // The agent close releases its leases through shared state and reopens it, so the
+    // shared handle is released second; otherwise Windows fails the removal with EBUSY.
+    closeOpenClawAgentDatabasesForTest();
+    resetPluginStateStoreForTests();
     if (fixtureRoot) {
       await fs.rm(fixtureRoot, { recursive: true, force: true });
     }
diff --git a/extensions/memory-core/src/memory/manager.watcher-config.test.ts b/extensions/memory-core/src/memory/manager.watcher-config.test.ts
index e3dc464f1caa..3f2355f368af 100644
--- a/extensions/memory-core/src/memory/manager.watcher-config.test.ts
+++ b/extensions/memory-core/src/memory/manager.watcher-config.test.ts
@@ -7,6 +7,8 @@ import type {
   MemorySearchConfig,
   OpenClawConfig,
 } from "openclaw/plugin-sdk/memory-core-host-engine-foundation";
+import { resetPluginStateStoreForTests } from "openclaw/plugin-sdk/plugin-state-test-runtime";
+import { closeOpenClawAgentDatabasesForTest } from "openclaw/plugin-sdk/sqlite-runtime-testing";
 import { afterAll, afterEach, beforeEach, describe, expect, it, vi } from "vitest";
 
 type WatchIgnoredFn = (watchPath: string, stats?: { isDirectory?: () => boolean }) => boolean;
@@ -208,6 +210,10 @@ describe("memory watcher config", () => {
     await closeAllMemorySearchManagers();
     clearRegistry();
     restoreWatcherStateDir();
+    // The agent close releases its leases through shared state and reopens it, so the
+    // shared handle is released second; otherwise Windows fails the removal with EBUSY.
+    closeOpenClawAgentDatabasesForTest();
+    resetPluginStateStoreForTests();
     if (workspaceDir) {
       await fs.rm(workspaceDir, { recursive: true, force: true });
       workspaceDir = "";
diff --git a/extensions/memory-core/src/test-helpers.ts b/extensions/memory-core/src/test-helpers.ts
index 27ba97ac8b93..49b553466919 100644
--- a/extensions/memory-core/src/test-helpers.ts
+++ b/extensions/memory-core/src/test-helpers.ts
@@ -2,7 +2,11 @@
 import fs from "node:fs/promises";
 import path from "node:path";
 import type { OpenKeyedStoreOptions } from "openclaw/plugin-sdk/plugin-state-runtime";
-import { createPluginStateKeyedStoreForTests } from "openclaw/plugin-sdk/plugin-state-test-runtime";
+import {
+  createPluginStateKeyedStoreForTests,
+  resetPluginStateStoreForTests,
+} from "openclaw/plugin-sdk/plugin-state-test-runtime";
+import { closeOpenClawAgentDatabasesForTest } from "openclaw/plugin-sdk/sqlite-runtime-testing";
 import { asOptionalRecord } from "openclaw/plugin-sdk/string-coerce-runtime";
 import { resolvePreferredOpenClawTmpDir } from "openclaw/plugin-sdk/temp-path";
 import { afterAll, beforeAll } from "vitest";
@@ -210,6 +214,10 @@ export function createMemoryCoreTestHarness() {
     if (!fixtureRoot) {
       return;
     }
+    // The agent close releases its leases through shared state and reopens it, so the
+    // shared handle is released second; otherwise Windows fails the removal with EBUSY.
+    closeOpenClawAgentDatabasesForTest();
+    resetPluginStateStoreForTests();
     await fs.rm(fixtureRoot, { recursive: true, force: true });
     resetMemoryCoreDreamingStateForTests();
   });