Refactor runtime around isolated bot instances

test/cli.test.ts

@@ -0,0 +1,26 @@
+import assert from "node:assert/strict";
+import { spawnSync } from "node:child_process";
+import path from "node:path";
+import test from "node:test";
+
+function runCli(args: string[]) {
+  return spawnSync(process.execPath, ["--import", "tsx", path.resolve("src/cli.ts"), ...args], {
+    cwd: path.resolve("."),
+    encoding: "utf8",
+    env: { ...process.env, GORI_GATEWAY_CONFIG: "" }
+  });
+}
+
+test("CLI rejects unknown flags and command-specific extra arguments", () => {
+  const unknown = runCli(["status", "--bogus"]);
+  assert.equal(unknown.status, 1);
+  assert.match(unknown.stderr, /Unknown option: --bogus/);
+
+  const extra = runCli(["doctor", "extra"]);
+  assert.equal(extra.status, 1);
+  assert.match(extra.stderr, /doctor accepts only --config/);
+
+  const instanceFlag = runCli(["instance", "list", "--config", "config.json"]);
+  assert.equal(instanceFlag.status, 1);
+  assert.match(instanceFlag.stderr, /instance commands do not accept/);
+});