op-dispute-mon,op-challenger: Increase default monitoring window (#10659)

Ensures sufficient monitoring period even in the worst case of clock extension.

op-challenger/cmd/main_test.go

@@ -660,7 +660,7 @@ func TestGameWindow(t *testing.T) {
 	})
 
 	t.Run("ParsesDefault", func(t *testing.T) {
-		cfg := configForArgs(t, addRequiredArgs(config.TraceTypeAlphabet, "--game-window=360h"))
+		cfg := configForArgs(t, addRequiredArgs(config.TraceTypeAlphabet, "--game-window=672h"))
 		require.Equal(t, config.DefaultGameWindow, cfg.GameWindow)
 	})
 }

op-challenger/config/config.go

@@ -96,9 +96,10 @@ const (
 	DefaultAsteriscInfoFreq     = uint(10_000_000)
 	// DefaultGameWindow is the default maximum time duration in the past
 	// that the challenger will look for games to progress.
-	// The default value is 15 days, which is an 8 day resolution buffer
-	// and bond claiming buffer plus the 7 day game finalization window.
-	DefaultGameWindow   = time.Duration(15 * 24 * time.Hour)
+	// The default value is 28 days. The worst case duration for a game is 16 days
+	// (due to clock extension), plus 7 days WETH withdrawal delay leaving a 5 day
+	// buffer to monitor games to ensure bonds are claimed.
+	DefaultGameWindow   = time.Duration(28 * 24 * time.Hour)
 	DefaultMaxPendingTx = 10
 )
 

op-dispute-mon/config/config.go

@@ -20,9 +20,10 @@ var (
 
 const (
 	// DefaultGameWindow is the default maximum time duration in the past
-	// to look for games to monitor. The default value is 11 days, which
-	// is a 4 day resolution buffer plus the 7 day game finalization window.
-	DefaultGameWindow = time.Duration(11 * 24 * time.Hour)
+	// to look for games to monitor. The default value is 28 days. The worst case duration
+	// for a game is 16 days (due to clock extension), plus 7 days WETH withdrawal delay
+	// leaving a 5 day buffer to monitor games after they should be fully resolved.
+	DefaultGameWindow = 28 * 24 * time.Hour
 	// DefaultMonitorInterval is the default interval at which the dispute
 	// monitor will check for new games to monitor.
 	DefaultMonitorInterval = time.Second * 30