diff --git a/src/proxy-capture/runtime.test.ts b/src/proxy-capture/runtime.test.ts
index 50f2698635e..0388e4f0b53 100644
--- a/src/proxy-capture/runtime.test.ts
+++ b/src/proxy-capture/runtime.test.ts
@@ -1,8 +1,34 @@
-import { mkdtempSync, rmSync } from "node:fs";
-import os from "node:os";
-import path from "node:path";
 import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
 
+const storeState = vi.hoisted(() => {
+  const events: Record<string, unknown>[] = [];
+  const store = {
+    upsertSession: vi.fn(),
+    endSession: vi.fn(),
+    recordEvent: vi.fn((event: Record<string, unknown>) => {
+      events.push(event);
+    }),
+  };
+  return {
+    events,
+    store,
+    closeDebugProxyCaptureStore: vi.fn(),
+  };
+});
+
+vi.mock("./store.sqlite.js", () => ({
+  closeDebugProxyCaptureStore: storeState.closeDebugProxyCaptureStore,
+  getDebugProxyCaptureStore: () => storeState.store,
+  persistEventPayload: (
+    _store: unknown,
+    payload: { data?: Buffer | string | null; contentType?: string },
+  ) => ({
+    contentType: payload.contentType,
+    ...(typeof payload.data === "string" ? { dataText: payload.data } : {}),
+  }),
+  safeJsonString: (value: unknown) => (value == null ? undefined : JSON.stringify(value)),
+}));
+
 describe("debug proxy runtime", () => {
   const envKeys = [
     "OPENCLAW_DEBUG_PROXY_ENABLED",
@@ -13,13 +39,16 @@ describe("debug proxy runtime", () => {
   ] as const;
   const savedEnv = Object.fromEntries(envKeys.map((key) => [key, process.env[key]]));
   const originalFetch = globalThis.fetch;
-  let tempDir = "";
 
   beforeEach(() => {
-    tempDir = mkdtempSync(path.join(os.tmpdir(), "openclaw-proxy-runtime-"));
+    storeState.events.length = 0;
+    storeState.store.upsertSession.mockClear();
+    storeState.store.endSession.mockClear();
+    storeState.store.recordEvent.mockClear();
+    storeState.closeDebugProxyCaptureStore.mockClear();
     process.env.OPENCLAW_DEBUG_PROXY_ENABLED = "1";
-    process.env.OPENCLAW_DEBUG_PROXY_DB_PATH = path.join(tempDir, "capture.sqlite");
-    process.env.OPENCLAW_DEBUG_PROXY_BLOB_DIR = path.join(tempDir, "blobs");
+    process.env.OPENCLAW_DEBUG_PROXY_DB_PATH = "/tmp/openclaw-proxy-runtime-test.sqlite";
+    process.env.OPENCLAW_DEBUG_PROXY_BLOB_DIR = "/tmp/openclaw-proxy-runtime-test-blobs";
     process.env.OPENCLAW_DEBUG_PROXY_SESSION_ID = "runtime-test-session";
     process.env.OPENCLAW_DEBUG_PROXY_SOURCE_PROCESS = "runtime-test";
   });
@@ -34,8 +63,6 @@ describe("debug proxy runtime", () => {
         process.env[key] = value;
       }
     }
-    rmSync(tempDir, { recursive: true, force: true });
-    vi.resetModules();
   });
 
   it("captures ambient global fetch calls when debug proxy mode is enabled", async () => {
@@ -44,7 +71,6 @@ describe("debug proxy runtime", () => {
     ) as typeof fetch;
 
     const runtime = await import("./runtime.js");
-    const storeModule = await import("./store.sqlite.js");
     runtime.initializeDebugProxyCapture("test");
     await globalThis.fetch("https://api.minimax.io/anthropic/messages", {
       method: "POST",
@@ -54,14 +80,9 @@ describe("debug proxy runtime", () => {
     await new Promise((resolve) => setTimeout(resolve, 0));
     runtime.finalizeDebugProxyCapture();
 
-    const store = storeModule.getDebugProxyCaptureStore(
-      process.env.OPENCLAW_DEBUG_PROXY_DB_PATH!,
-      process.env.OPENCLAW_DEBUG_PROXY_BLOB_DIR!,
-    );
-    const events = store.getSessionEvents("runtime-test-session", 20);
+    const events = storeState.events.filter((event) => event.sessionId === "runtime-test-session");
     expect(events.some((event) => event.host === "api.minimax.io")).toBe(true);
     expect(events.some((event) => event.kind === "request")).toBe(true);
     expect(events.some((event) => event.kind === "response")).toBe(true);
-    store.close();
   });
 });