chore: migrate module path to lerkolabs org

Move Go module from gitea.lerkolabs.com/lerko/uptop to
gitea.lerkolabs.com/lerkolabs/uptop. Updates all imports,
go.mod, goreleaser owner, and README links.

internal/cluster/cluster.go

@@ -7,7 +7,7 @@ import (
 	"strings"
 	"time"
 
-	"gitea.lerkolabs.com/lerko/uptop/internal/monitor"
+	"gitea.lerkolabs.com/lerkolabs/uptop/internal/monitor"
 )
 
 type Config struct {

internal/cluster/cluster_test.go

@@ -10,8 +10,8 @@ import (
 	"testing"
 	"time"
 
-	"gitea.lerkolabs.com/lerko/uptop/internal/models"
-	"gitea.lerkolabs.com/lerko/uptop/internal/monitor"
+	"gitea.lerkolabs.com/lerkolabs/uptop/internal/models"
+	"gitea.lerkolabs.com/lerkolabs/uptop/internal/monitor"
 )
 
 // --- Mock Store (minimal, for monitor.NewEngine) ---

internal/cluster/probe.go

@@ -12,8 +12,8 @@ import (
 	"sync"
 	"time"
 
-	"gitea.lerkolabs.com/lerko/uptop/internal/models"
-	"gitea.lerkolabs.com/lerko/uptop/internal/monitor"
+	"gitea.lerkolabs.com/lerkolabs/uptop/internal/models"
+	"gitea.lerkolabs.com/lerkolabs/uptop/internal/monitor"
 )
 
 type ProbeConfig struct {