Expose device clock suspension without resetting jitter buffer

src/call/call_jitter.cpp

@@ -214,6 +214,12 @@ void call_jitter_progress(struct call_jitter* j, uint64_t epoch, uint64_t positi
     j->timeline.progress(epoch, position, at_us, now_us, measured != 0);
 }
 
+void call_jitter_suspend_device(struct call_jitter* j, uint64_t epoch) {
+    if (!j) return;
+    std::lock_guard<std::mutex> lock(j->mtx);
+    j->timeline.suspend_device(epoch);
+}
+
 void call_jitter_clock(struct call_jitter* j, int64_t now_us, struct call_clock_snapshot* out) {
     if (!j || !out) return;
     std::lock_guard<std::mutex> lock(j->mtx);

src/call/call_jitter.h

@@ -43,6 +43,7 @@ int call_jitter_pull(struct call_jitter* j, int16_t* out, int max_samples);
 /* Playback worker: учесть локальную тишину/тон после pull и прогресс устройства. */
 void call_jitter_silence(struct call_jitter* j, unsigned samples);
 void call_jitter_progress(struct call_jitter* j, uint64_t epoch, uint64_t position, int64_t at_us, int64_t now_us, int measured);
+void call_jitter_suspend_device(struct call_jitter* j, uint64_t epoch);
 /* Любой поток: снимок часов, включая epoch при valid=0. */
 void call_jitter_clock(struct call_jitter* j, int64_t now_us, struct call_clock_snapshot* out);
 void call_jitter_get_stats(struct call_jitter* j, int* depth_ms, int* tempo_x100,