Other: Fix goroutine leaks in sync tests

Add missing Close calls.

Properly handle nil channel for `user.startSync`.

This patch also updated liteapi and Gluon to latest master and dev
version respectively.

internal/bridge/bridge.go

@@ -93,6 +93,8 @@ type Bridge struct {
 
 	// stopCh is used to stop ongoing goroutines when the bridge is closed.
 	stopCh chan struct{}
+
+	closeEventChFn func()
 }
 
 // New creates a new bridge.
@@ -165,7 +167,9 @@ func New( //nolint:funlen
 	)
 
 	// Get an event channel for all events (individual events can be subscribed to later).
-	eventCh, _ := bridge.GetEvents()
+	eventCh, closeFn := bridge.GetEvents()
+
+	bridge.closeEventChFn = closeFn
 
 	if err := bridge.init(tlsReporter); err != nil {
 		return nil, nil, fmt.Errorf("failed to initialize bridge: %w", err)
@@ -303,6 +307,14 @@ func (bridge *Bridge) GetErrors() []error {
 }
 
 func (bridge *Bridge) Close(ctx context.Context) error {
+	defer func() {
+		if bridge.closeEventChFn != nil {
+			bridge.closeEventChFn()
+		}
+
+		bridge.closeEventChFn = nil
+	}()
+
 	// Stop ongoing operations such as connectivity checks.
 	close(bridge.stopCh)
 
@@ -356,6 +368,7 @@ func (bridge *Bridge) addWatcher(ofType ...events.Event) *watcher.Watcher[events
 }
 
 func (bridge *Bridge) remWatcher(oldWatcher *watcher.Watcher[events.Event]) {
+	oldWatcher.Close()
 	bridge.watchers.Delete(oldWatcher)
 }
 

internal/bridge/sync_test.go

@@ -25,6 +25,8 @@ import (
 	"runtime"
 	"testing"
 
+	"go.uber.org/goleak"
+
 	"github.com/ProtonMail/proton-bridge/v2/internal/bridge"
 	"github.com/ProtonMail/proton-bridge/v2/internal/events"
 	"github.com/bradenaw/juniper/iterator"
@@ -36,6 +38,8 @@ import (
 )
 
 func TestBridge_Sync(t *testing.T) {
+	defer goleak.VerifyNone(t, goleak.IgnoreCurrent())
+
 	s := server.New()
 	defer s.Close()
 
@@ -56,6 +60,7 @@ func TestBridge_Sync(t *testing.T) {
 			liteapi.WithTransport(liteapi.InsecureTransport()),
 		).NewClientWithLogin(ctx, "imap", password)
 		require.NoError(t, err)
+		defer c.Close()
 
 		user, err := c.GetUser(ctx)
 		require.NoError(t, err)

internal/bridge/user.go

@@ -394,6 +394,9 @@ func (bridge *Bridge) addUserWithVault(
 		return fmt.Errorf("failed to create user: %w", err)
 	}
 
+	if bridge.users.Has(apiUser.ID) {
+		panic("double add")
+	}
 	bridge.users.Set(apiUser.ID, user)
 
 	// Connect the user's address(es) to gluon.