refactor: improve task management with xsync for concurrent access and enhance callback and subtasks handling as well as memory allocation

internal/task/task_prod.go

@@ -0,0 +1,19 @@
+//go:build !debug
+
+package task
+
+func panicWithDebugStack() {
+	// do nothing
+}
+
+func panicIfFinished(t *Task, reason string) {
+	// do nothing
+}
+
+func logStarted(t *Task) {
+	// do nothing
+}
+
+func logFinished(t *Task) {
+	// do nothing
+}