fix(codex): harden lsp post tool hook

packages/omo-codex/plugin/components/lsp/test/codex-hook-cli.test.ts

@@ -0,0 +1,28 @@
+import { spawnSync } from "node:child_process";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+
+import { describe, expect, it } from "vitest";
+
+describe("codex PostToolUse hook CLI", () => {
+	it("#given malformed post-tool-use stdin #when hook CLI runs #then it no-ops without stderr", () => {
+		// given
+		const input = "break;\n";
+
+		// when
+		const result = runBuiltHookCli(input);
+
+		// then
+		expect(result.status).toBe(0);
+		expect(result.stderr).toBe("");
+		expect(result.stdout).toBe("");
+	});
+});
+
+function runBuiltHookCli(input: string): ReturnType<typeof spawnSync> {
+	const cliPath = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "../dist/cli.js");
+	return spawnSync(process.execPath, [cliPath, "hook", "post-tool-use"], {
+		input,
+		encoding: "utf8",
+	});
+}