chanstate: use channel types in link config

diff --git a/htlcswitch/interfaces.go b/htlcswitch/interfaces.go
index 53d1c59..ef62eb7 100644
--- a/htlcswitch/interfaces.go
+++ b/htlcswitch/interfaces.go
@@ -6,6 +6,7 @@ import (
 	"github.com/btcsuite/btcd/btcutil/v2"
 	"github.com/btcsuite/btcd/wire/v2"
 	"github.com/lightningnetwork/lnd/channeldb"
+	"github.com/lightningnetwork/lnd/chanstate"
 	"github.com/lightningnetwork/lnd/fn/v2"
 	"github.com/lightningnetwork/lnd/graph/db/models"
 	"github.com/lightningnetwork/lnd/invoices"
@@ -354,7 +355,7 @@ type TowerClient interface {
 	// parameters within the client. This should be called during link
 	// startup to ensure that the client is able to support the link during
 	// operation.
-	RegisterChannel(lnwire.ChannelID, channeldb.ChannelType) error
+	RegisterChannel(lnwire.ChannelID, chanstate.ChannelType) error
 
 	// BackupState initiates a request to back up a particular revoked
 	// state. If the method returns nil, the backup is guaranteed to be
diff --git a/htlcswitch/link.go b/htlcswitch/link.go
index 0b4516d..9e3adf0 100644
--- a/htlcswitch/link.go
+++ b/htlcswitch/link.go
@@ -16,6 +16,7 @@ import (
 	"github.com/btcsuite/btcd/wire/v2"
 	"github.com/btcsuite/btclog/v2"
 	"github.com/lightningnetwork/lnd/channeldb"
+	"github.com/lightningnetwork/lnd/chanstate"
 	"github.com/lightningnetwork/lnd/contractcourt"
 	"github.com/lightningnetwork/lnd/fn/v2"
 	"github.com/lightningnetwork/lnd/graph/db/models"
@@ -258,7 +259,7 @@ type ChannelLinkConfig struct {
 
 	// NotifyChannelUpdate allows the link to tell the ChannelNotifier when
 	// a channel's state has been updated.
-	NotifyChannelUpdate func(*channeldb.OpenChannel)
+	NotifyChannelUpdate func(*chanstate.OpenChannel)
 
 	// HtlcNotifier is an instance of a htlcNotifier which we will pipe htlc
 	// events through.
@@ -2372,7 +2373,7 @@ type dustClosure func(feerate chainfee.SatPerKWeight, incoming bool,
 	whoseCommit lntypes.ChannelParty, amt btcutil.Amount) bool
 
 // dustHelper is used to construct the dustClosure.
-func dustHelper(chantype channeldb.ChannelType, localDustLimit,
+func dustHelper(chantype chanstate.ChannelType, localDustLimit,
 	remoteDustLimit btcutil.Amount) dustClosure {
 
 	isDust := func(feerate chainfee.SatPerKWeight, incoming bool,
diff --git a/htlcswitch/link_test.go b/htlcswitch/link_test.go
index d73a355..2876089 100644
--- a/htlcswitch/link_test.go
+++ b/htlcswitch/link_test.go
@@ -2240,7 +2240,7 @@ func newSingleLinkTestHarness(t *testing.T, chanAmt,
 		MaxFeeAllocation:           DefaultMaxLinkFeeAllocation,
 		NotifyActiveLink:           func(wire.OutPoint) {},
 		NotifyActiveChannel:        func(wire.OutPoint) {},
-		NotifyChannelUpdate:        func(*channeldb.OpenChannel) {},
+		NotifyChannelUpdate:        func(*cstate.OpenChannel) {},
 		NotifyInactiveChannel:      func(wire.OutPoint) {},
 		NotifyInactiveLinkEvent:    func(wire.OutPoint) {},
 		HtlcNotifier:               aliceSwitch.cfg.HtlcNotifier,
@@ -4931,7 +4931,7 @@ func (h *persistentLinkHarness) restartLink(
 		NotifyActiveChannel:        func(wire.OutPoint) {},
 		NotifyInactiveChannel:      func(wire.OutPoint) {},
 		NotifyInactiveLinkEvent:    func(wire.OutPoint) {},
-		NotifyChannelUpdate:        func(*channeldb.OpenChannel) {},
+		NotifyChannelUpdate:        func(*cstate.OpenChannel) {},
 		HtlcNotifier:               h.hSwitch.cfg.HtlcNotifier,
 		SyncStates:                 syncStates,
 		GetAliases:                 getAliases,
@@ -5779,7 +5779,7 @@ type mockFailLoadFwdPkgStore struct {
 // failure handling while all other store methods delegate to the embedded
 // store.
 func (m *mockFailLoadFwdPkgStore) LoadFwdPkgs(
-	*channeldb.OpenChannel) ([]*channeldb.FwdPkg, error) {
+	*cstate.OpenChannel) ([]*channeldb.FwdPkg, error) {
 
 	return nil, fmt.Errorf("failing LoadFwdPkgs")
 }
diff --git a/htlcswitch/mailbox_test.go b/htlcswitch/mailbox_test.go
index af4b192..b732694 100644
--- a/htlcswitch/mailbox_test.go
+++ b/htlcswitch/mailbox_test.go
@@ -9,6 +9,7 @@ import (
 	"github.com/btcsuite/btcd/btcutil/v2"
 	"github.com/davecgh/go-spew/spew"
 	"github.com/lightningnetwork/lnd/channeldb"
+	"github.com/lightningnetwork/lnd/chanstate"
 	"github.com/lightningnetwork/lnd/clock"
 	"github.com/lightningnetwork/lnd/lnmock"
 	"github.com/lightningnetwork/lnd/lnwallet/chainfee"
@@ -586,7 +587,7 @@ func TestMailBoxDustHandling(t *testing.T) {
 	})
 }
 
-func testMailBoxDust(t *testing.T, chantype channeldb.ChannelType) {
+func testMailBoxDust(t *testing.T, chantype chanstate.ChannelType) {
 	t.Parallel()
 
 	ctx := newMailboxContext(t, time.Now(), testExpiry)