diff --git a/apps/memos-local-plugin/bridge.cts b/apps/memos-local-plugin/bridge.cts
index acc1ccb29..9a2373e57 100644
--- a/apps/memos-local-plugin/bridge.cts
+++ b/apps/memos-local-plugin/bridge.cts
@@ -29,6 +29,8 @@ const path = require("node:path") as typeof import("node:path");
 // eslint-disable-next-line @typescript-eslint/no-require-imports
 const fs = require("node:fs") as typeof import("node:fs");
 // eslint-disable-next-line @typescript-eslint/no-require-imports
+const { homedir } = require("node:os") as typeof import("node:os");
+// eslint-disable-next-line @typescript-eslint/no-require-imports
 const childProcess = require("node:child_process") as typeof import("node:child_process");
 // eslint-disable-next-line @typescript-eslint/no-require-imports
 const url = require("node:url") as typeof import("node:url");
@@ -95,7 +97,7 @@ const STDIO_PID_FILENAME = "bridge-stdio.pid";
 function pidFilePath(agent: string, filename: string = PID_FILENAME): string {
   const agentHome = agent === "hermes" ? ".hermes" : ".openclaw";
   return path.join(
-    process.env.HOME ?? "/tmp",
+    homedir(),
     agentHome,
     "memos-plugin",
     "daemon",
diff --git a/apps/memos-local-plugin/bridge.mts b/apps/memos-local-plugin/bridge.mts
index 2d967c597..217c8b904 100644
--- a/apps/memos-local-plugin/bridge.mts
+++ b/apps/memos-local-plugin/bridge.mts
@@ -30,6 +30,7 @@
  */
 import * as childProcess from "node:child_process";
 import * as fs from "node:fs";
+import { homedir } from "node:os";
 import * as path from "node:path";
 import { fileURLToPath } from "node:url";
 
@@ -81,7 +82,7 @@ const PID_FILENAME = "bridge.pid";
 function pidFilePath(agent: string): string {
   const agentHome = agent === "hermes" ? ".hermes" : ".openclaw";
   return path.join(
-    process.env.HOME ?? "/tmp",
+    homedir(),
     agentHome,
     "memos-plugin",
     "daemon",
diff --git a/apps/memos-local-plugin/tests/unit/bridge/pid-file-path.test.ts b/apps/memos-local-plugin/tests/unit/bridge/pid-file-path.test.ts
new file mode 100644
index 000000000..4224ba067
--- /dev/null
+++ b/apps/memos-local-plugin/tests/unit/bridge/pid-file-path.test.ts
@@ -0,0 +1,21 @@
+import { readFileSync } from "node:fs";
+import { resolve } from "node:path";
+
+import { describe, expect, it } from "vitest";
+
+describe("bridge PID file path", () => {
+  for (const entry of ["bridge.cts", "bridge.mts"]) {
+    it(`${entry} resolves the PID directory from the OS home`, () => {
+      const source = readFileSync(resolve(entry), "utf8");
+      const start = source.indexOf("function pidFilePath");
+      const end = source.indexOf("function readPidFile", start);
+
+      expect(start, `${entry}: pidFilePath() not found`).toBeGreaterThanOrEqual(0);
+      expect(end, `${entry}: readPidFile() not found`).toBeGreaterThan(start);
+
+      const pidFilePathSource = source.slice(start, end);
+      expect(pidFilePathSource).toMatch(/\bhomedir\(\)/);
+      expect(pidFilePathSource).not.toMatch(/process\.env\.HOME|["']\/tmp["']/);
+    });
+  }
+});