fix(cli): correct --verbose / -v option syntax in acp commands (#21303)

Merged via /review-pr -> /prepare-pr -> /merge-pr.

Prepared head SHA: 20d058dcf5
Co-authored-by: adhitShet <131381638+adhitShet@users.noreply.github.com>
Co-authored-by: gumadeiras <5599352+gumadeiras@users.noreply.github.com>
Reviewed-by: @gumadeiras

src/cli/program/build-program.version-alias.test.ts

@@ -0,0 +1,39 @@
+import process from "node:process";
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+
+const { buildProgram } = await import("./build-program.js");
+
+describe("buildProgram version alias handling", () => {
+  let originalArgv: string[];
+
+  beforeEach(() => {
+    originalArgv = [...process.argv];
+  });
+
+  afterEach(() => {
+    process.argv = originalArgv;
+    vi.restoreAllMocks();
+  });
+
+  it("exits with version output for root -v", () => {
+    process.argv = ["node", "openclaw", "-v"];
+    const logSpy = vi.spyOn(console, "log").mockImplementation(() => {});
+    const exitSpy = vi.spyOn(process, "exit").mockImplementation(((code?: number) => {
+      throw new Error(`process.exit:${String(code)}`);
+    }) as typeof process.exit);
+
+    expect(() => buildProgram()).toThrow("process.exit:0");
+    expect(logSpy).toHaveBeenCalledTimes(1);
+    expect(exitSpy).toHaveBeenCalledWith(0);
+  });
+
+  it("does not treat subcommand -v as root version alias", () => {
+    process.argv = ["node", "openclaw", "acp", "-v"];
+    const exitSpy = vi.spyOn(process, "exit").mockImplementation(((code?: number) => {
+      throw new Error(`unexpected process.exit:${String(code)}`);
+    }) as typeof process.exit);
+
+    expect(() => buildProgram()).not.toThrow();
+    expect(exitSpy).not.toHaveBeenCalled();
+  });
+});