perf(test): gate monitor runtime logs during vitest

src/runtime.ts

@@ -7,8 +7,22 @@ export type RuntimeEnv = {
   exit: (code: number) => never;
 };
 
+function shouldEmitRuntimeLog(env: NodeJS.ProcessEnv = process.env): boolean {
+  if (env.VITEST !== "true") {
+    return true;
+  }
+  if (env.OPENCLAW_TEST_RUNTIME_LOG === "1") {
+    return true;
+  }
+  const maybeMockedLog = console.log as unknown as { mock?: unknown };
+  return typeof maybeMockedLog.mock === "object";
+}
+
 export const defaultRuntime: RuntimeEnv = {
   log: (...args: Parameters<typeof console.log>) => {
+    if (!shouldEmitRuntimeLog()) {
+      return;
+    }
     clearActiveProgressLine();
     console.log(...args);
   },
@@ -22,3 +36,22 @@ export const defaultRuntime: RuntimeEnv = {
     throw new Error("unreachable"); // satisfies tests when mocked
   },
 };
+
+export function createNonExitingRuntime(): RuntimeEnv {
+  return {
+    log: (...args: Parameters<typeof console.log>) => {
+      if (!shouldEmitRuntimeLog()) {
+        return;
+      }
+      clearActiveProgressLine();
+      console.log(...args);
+    },
+    error: (...args: Parameters<typeof console.error>) => {
+      clearActiveProgressLine();
+      console.error(...args);
+    },
+    exit: (code: number): never => {
+      throw new Error(`exit ${code}`);
+    },
+  };
+}