diff --git a/extensions/qa-lab/src/runtime-parity-cache-diagnostics.test.ts b/extensions/qa-lab/src/runtime-parity-cache-diagnostics.test.ts
index c3092eed9511..97c72be0ff2d 100644
--- a/extensions/qa-lab/src/runtime-parity-cache-diagnostics.test.ts
+++ b/extensions/qa-lab/src/runtime-parity-cache-diagnostics.test.ts
@@ -1,7 +1,11 @@
 import path from "node:path";
+import { resetPluginStateStoreForTests } from "openclaw/plugin-sdk/plugin-state-test-runtime";
 import { resolveStorePath, upsertSessionEntry } from "openclaw/plugin-sdk/session-store-runtime";
 import { appendSessionTranscriptMessageByIdentity } from "openclaw/plugin-sdk/session-transcript-runtime";
-import { formatSqliteSessionFileMarker } from "openclaw/plugin-sdk/sqlite-runtime-testing";
+import {
+  closeOpenClawAgentDatabasesForTest,
+  formatSqliteSessionFileMarker,
+} from "openclaw/plugin-sdk/sqlite-runtime-testing";
 import { afterEach, describe, expect, it } from "vitest";
 import { buildRuntimeParityCacheDiagnostics } from "./runtime-parity-cache-diagnostics.js";
 import { captureRuntimeParityCell, type RuntimeParityUsage } from "./runtime-parity.js";
@@ -10,6 +14,11 @@ import { createTempDirHarness } from "./temp-dir.test-helper.js";
 const tempDirs = createTempDirHarness();
 
 afterEach(async () => {
+  // Fixtures point a state dir at these temp workspaces, so the shared and per-agent
+  // SQLite handles stay cached and Windows fails the removal with EBUSY. The agent close
+  // releases its leases through shared state and reopens it, so the store is released second.
+  closeOpenClawAgentDatabasesForTest();
+  resetPluginStateStoreForTests();
   await tempDirs.cleanup();
 });
 
diff --git a/extensions/qa-lab/src/runtime-parity-session-selection.test.ts b/extensions/qa-lab/src/runtime-parity-session-selection.test.ts
index 833e5a45d037..92b6e85aaae1 100644
--- a/extensions/qa-lab/src/runtime-parity-session-selection.test.ts
+++ b/extensions/qa-lab/src/runtime-parity-session-selection.test.ts
@@ -1,8 +1,10 @@
 import path from "node:path";
+import { resetPluginStateStoreForTests } from "openclaw/plugin-sdk/plugin-state-test-runtime";
 import { resolveStorePath, upsertSessionEntry } from "openclaw/plugin-sdk/session-store-runtime";
 import { appendSessionTranscriptMessageByIdentity } from "openclaw/plugin-sdk/session-transcript-runtime";
 import {
   appendSqliteTrajectoryRuntimeEvents,
+  closeOpenClawAgentDatabasesForTest,
   formatSqliteSessionFileMarker,
 } from "openclaw/plugin-sdk/sqlite-runtime-testing";
 import { afterEach, describe, expect, it } from "vitest";
@@ -12,6 +14,11 @@ import { createTempDirHarness } from "./temp-dir.test-helper.js";
 const tempDirs = createTempDirHarness();
 
 afterEach(async () => {
+  // Fixtures point a state dir at these temp workspaces, so the shared and per-agent
+  // SQLite handles stay cached and Windows fails the removal with EBUSY. The agent close
+  // releases its leases through shared state and reopens it, so the store is released second.
+  closeOpenClawAgentDatabasesForTest();
+  resetPluginStateStoreForTests();
   await tempDirs.cleanup();
 });
 
diff --git a/extensions/qa-lab/src/runtime-parity.test.ts b/extensions/qa-lab/src/runtime-parity.test.ts
index f8257d0d61f3..3ae9c198e132 100644
--- a/extensions/qa-lab/src/runtime-parity.test.ts
+++ b/extensions/qa-lab/src/runtime-parity.test.ts
@@ -2,10 +2,12 @@
 import { createServer } from "node:http";
 import type { AddressInfo } from "node:net";
 import path from "node:path";
+import { resetPluginStateStoreForTests } from "openclaw/plugin-sdk/plugin-state-test-runtime";
 import { resolveStorePath, upsertSessionEntry } from "openclaw/plugin-sdk/session-store-runtime";
 import { appendSessionTranscriptMessageByIdentity } from "openclaw/plugin-sdk/session-transcript-runtime";
 import {
   appendSqliteTrajectoryRuntimeEvents,
+  closeOpenClawAgentDatabasesForTest,
   formatSqliteSessionFileMarker,
 } from "openclaw/plugin-sdk/sqlite-runtime-testing";
 import { afterEach, describe, expect, it, vi } from "vitest";
@@ -25,6 +27,11 @@ const tempDirs = createTempDirHarness();
 
 afterEach(async () => {
   vi.unstubAllGlobals();
+  // Fixtures point a state dir at these temp workspaces, so the shared and per-agent
+  // SQLite handles stay cached and Windows fails the removal with EBUSY. The agent close
+  // releases its leases through shared state and reopens it, so the store is released second.
+  closeOpenClawAgentDatabasesForTest();
+  resetPluginStateStoreForTests();
   await tempDirs.cleanup();
 });
 
diff --git a/extensions/qa-lab/src/runtime-tool-fixture.test.ts b/extensions/qa-lab/src/runtime-tool-fixture.test.ts
index 4a8c1ad9502e..fc32e153569a 100644
--- a/extensions/qa-lab/src/runtime-tool-fixture.test.ts
+++ b/extensions/qa-lab/src/runtime-tool-fixture.test.ts
@@ -2,8 +2,10 @@
 import fs from "node:fs/promises";
 import os from "node:os";
 import path from "node:path";
+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 { closeOpenClawAgentDatabasesForTest } from "openclaw/plugin-sdk/sqlite-runtime-testing";
 import { afterEach, describe, expect, it, vi } from "vitest";
 import { QaSuiteInfraError } from "./errors.js";
 import { runRuntimeToolFixture } from "./runtime-tool-fixture.js";
@@ -437,6 +439,10 @@ async function runMockRuntimeToolFixtureWithOutputs(params: {
 }
 
 afterEach(async () => {
+  // The session store keeps the state database open under the temporary root, so
+  // Windows fails the removal with EBUSY unless the cached handle is released first.
+  closeOpenClawAgentDatabasesForTest();
+  resetPluginStateStoreForTests();
   await Promise.all(
     tempRoots.splice(0).map((tempRoot) => fs.rm(tempRoot, { recursive: true, force: true })),
   );
diff --git a/extensions/qa-lab/src/suite-runtime-agent-session.test.ts b/extensions/qa-lab/src/suite-runtime-agent-session.test.ts
index 04d7740541ac..dd75bc7b1380 100644
--- a/extensions/qa-lab/src/suite-runtime-agent-session.test.ts
+++ b/extensions/qa-lab/src/suite-runtime-agent-session.test.ts
@@ -1,12 +1,16 @@
 // Qa Lab tests cover suite runtime agent session plugin behavior.
 import fs from "node:fs/promises";
 import path from "node:path";
+import { resetPluginStateStoreForTests } from "openclaw/plugin-sdk/plugin-state-test-runtime";
 import {
   loadTranscriptEventsSync,
   upsertSessionEntry,
 } from "openclaw/plugin-sdk/session-store-runtime";
 import { appendSessionTranscriptMessageByIdentity } from "openclaw/plugin-sdk/session-transcript-runtime";
-import { appendSqliteSessionTranscriptEventForTest } from "openclaw/plugin-sdk/sqlite-runtime-testing";
+import {
+  closeOpenClawAgentDatabasesForTest,
+  appendSqliteSessionTranscriptEventForTest,
+} from "openclaw/plugin-sdk/sqlite-runtime-testing";
 import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
 import {
   createSession,
@@ -22,6 +26,11 @@ const { cleanup, makeTempDir } = createTempDirHarness();
 
 afterEach(async () => {
   vi.useRealTimers();
+  // Fixtures point a state dir at these temp workspaces, so the shared and per-agent
+  // SQLite handles stay cached and Windows fails the removal with EBUSY. The agent close
+  // releases its leases through shared state and reopens it, so the store is released second.
+  closeOpenClawAgentDatabasesForTest();
+  resetPluginStateStoreForTests();
   await cleanup();
 });