Plugins: fix env-aware root resolution and caching (#44046)

Merged via squash.

Prepared head SHA: 6e8852a188
Co-authored-by: gumadeiras <5599352+gumadeiras@users.noreply.github.com>
Co-authored-by: gumadeiras <5599352+gumadeiras@users.noreply.github.com>
Reviewed-by: @gumadeiras

src/plugins/cli.test.ts

@@ -1,28 +1,15 @@
 import { Command } from "commander";
 import { beforeEach, describe, expect, it, vi } from "vitest";
+import type { OpenClawConfig } from "../config/config.js";
 
 const mocks = vi.hoisted(() => ({
   memoryRegister: vi.fn(),
   otherRegister: vi.fn(),
+  loadOpenClawPlugins: vi.fn(),
 }));
 
 vi.mock("./loader.js", () => ({
-  loadOpenClawPlugins: () => ({
-    cliRegistrars: [
-      {
-        pluginId: "memory-core",
-        register: mocks.memoryRegister,
-        commands: ["memory"],
-        source: "bundled",
-      },
-      {
-        pluginId: "other",
-        register: mocks.otherRegister,
-        commands: ["other"],
-        source: "bundled",
-      },
-    ],
-  }),
+  loadOpenClawPlugins: (...args: unknown[]) => mocks.loadOpenClawPlugins(...args),
 }));
 
 import { registerPluginCliCommands } from "./cli.js";
@@ -31,6 +18,23 @@ describe("registerPluginCliCommands", () => {
   beforeEach(() => {
     mocks.memoryRegister.mockClear();
     mocks.otherRegister.mockClear();
+    mocks.loadOpenClawPlugins.mockReset();
+    mocks.loadOpenClawPlugins.mockReturnValue({
+      cliRegistrars: [
+        {
+          pluginId: "memory-core",
+          register: mocks.memoryRegister,
+          commands: ["memory"],
+          source: "bundled",
+        },
+        {
+          pluginId: "other",
+          register: mocks.otherRegister,
+          commands: ["other"],
+          source: "bundled",
+        },
+      ],
+    });
   });
 
   it("skips plugin CLI registrars when commands already exist", () => {
@@ -43,4 +47,17 @@ describe("registerPluginCliCommands", () => {
     expect(mocks.memoryRegister).not.toHaveBeenCalled();
     expect(mocks.otherRegister).toHaveBeenCalledTimes(1);
   });
+
+  it("forwards an explicit env to plugin loading", () => {
+    const program = new Command();
+    const env = { OPENCLAW_HOME: "/srv/openclaw-home" } as NodeJS.ProcessEnv;
+
+    registerPluginCliCommands(program, {} as OpenClawConfig, env);
+
+    expect(mocks.loadOpenClawPlugins).toHaveBeenCalledWith(
+      expect.objectContaining({
+        env,
+      }),
+    );
+  });
 });