Shorten strategy response window to 12 hours

tests/config.test.ts

@@ -228,8 +228,9 @@ describe('ConfigSchema', () => {
       if (result.success) {
         expect(result.data.strategies.explorationRate).toBe(0.2);
         expect(result.data.strategies.minSamples).toBe(30);
-        expect(result.data.strategies.responseWindowHours).toBe(48);
+        expect(result.data.strategies.responseWindowHours).toBe(12);
         expect(result.data.strategies.variants).toEqual([]);
+        expect(result.data.chatStrategies.responseWindowHours).toBe(12);
       }
     });