Add destination takeover config policy

internal/config/defaults.go

@@ -47,6 +47,13 @@ const (
 	ReconciliationModeMerge   = "merge"
 )
 
+const (
+	TakeoverModeSamePipeline = "same_pipeline"
+	TakeoverModeSameSource   = "same_source"
+	TakeoverModeAnyManaged   = "any_managed"
+	TakeoverModeNever        = "never"
+)
+
 const (
 	StateModeSingleOwner = "single_owner"
 	StateModeSharedRoot  = "shared_root"
@@ -95,6 +102,9 @@ func ApplyDefaults(cfg *Config) {
 			if destination.Reconciliation.Mode == "" {
 				destination.Reconciliation.Mode = ReconciliationModeReplace
 			}
+			if destination.Takeover.Mode == "" {
+				destination.Takeover.Mode = TakeoverModeSamePipeline
+			}
 			if destination.Transfer.OnDestinationSame == "" {
 				destination.Transfer.OnDestinationSame = TransferActionSkip
 			}