Isolate monotonic probe scheduling policy for precise boundary checks

src/stream/stream_optimizer.h

@@ -6,6 +6,10 @@
 #include "stream.h"
 
 struct stream_optimizer;
+/* Только монотонное расписание; pending/active — незавершённый обход/пробы текущего цикла.
+ * Возвращает допустимое число новых узлов, не адресов/субпотоков: 32 один раз, затем 0/1. */
+struct stream_probe_schedule { uint64_t cycle, started_ms, next_ms; };
+unsigned stream_probe_schedule_tick(struct stream_probe_schedule *schedule, uint64_t now_ms, unsigned pending, unsigned active);
 int stream_optimizer_create(struct UTUN_INSTANCE *inst, const struct stream_descriptor *descriptor, struct stream_optimizer **out);
 void stream_optimizer_destroy(struct stream_optimizer *optimizer);
 void stream_optimizer_tick(struct stream_optimizer *optimizer, struct STREAM_HANDLE *subscription, uint64_t now_ms);