Expose filtered Android call buffer diagnostics over JNI

tools/chatgui-android/app/src/main/java/com/utun/chat/data/NativeLib.kt

@@ -271,6 +271,8 @@ object NativeLib {
     fun callAudioProgress(callId: Long, epoch: Long, position: Long, nowUs: Long) = nativeCallAudioProgress(callId, epoch, position, nowUs)
     /** out: epoch, source_epoch, played, written, pts_us, valid, measured, held_back_us. */
     fun callAudioClock(callId: Long, nowUs: Long, out: LongArray): Boolean = nativeCallAudioClock(callId, nowUs, out)
+    /** call=debug: encoded_ms, processing_ms, reserve_ms, spread_ms, pcm_samples, tempo_x100, underruns, waiting. */
+    fun callAudioDiagnostics(callId: Long, out: LongArray): Boolean = nativeCallAudioDiagnostics(callId, out)
     fun callAudioStop() { nativeCallAudioStop() }
 
     /* AEC (эхоподавление): включается по спикерфону; delay — измеренная задержка в кадрах. */
@@ -404,6 +406,7 @@ object NativeLib {
     private external fun nativeCallAudioPull(callId: Long, out: ShortArray): Int
     private external fun nativeCallAudioProgress(callId: Long, epoch: Long, position: Long, nowUs: Long)
     private external fun nativeCallAudioClock(callId: Long, nowUs: Long, out: LongArray): Boolean
+    private external fun nativeCallAudioDiagnostics(callId: Long, out: LongArray): Boolean
     private external fun nativeCallAudioStop()
     private external fun nativeCallAudioSetAec(enabled: Boolean)
     private external fun nativeCallAudioSetAecDelay(frames: Int)

tools/chatgui-android/jni_bridge/android_jni_bridge.c

@@ -2713,6 +2713,27 @@ JNIEXPORT jboolean JNICALL Java_com_utun_chat_data_NativeLib_nativeCallAudioCloc
     return JNI_TRUE;
 }
 
+/* Диагностика включается тем же фильтром call=debug, что и нативные сводки. */
+JNIEXPORT jboolean JNICALL Java_com_utun_chat_data_NativeLib_nativeCallAudioDiagnostics(
+    JNIEnv* env, jobject thiz, jlong callId, jlongArray out) {
+    (void)thiz;
+    if (!debug_should_output(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_CALL)) return JNI_FALSE;
+    if (!out || (*env)->GetArrayLength(env, out) != 8) {
+        DEBUG_ERROR(DEBUG_CATEGORY_CALL, "call diagnostics: expected LongArray(8)");
+        return JNI_FALSE;
+    }
+    struct call_jitter_diagnostics d;
+    if (call_audio_get_diagnostics(callId, &d) != 0) return JNI_FALSE;
+    jlong values[8] = {d.encoded_ms, d.processing_ms, d.reserve_ms, d.arrival_spread_ms,
+                      d.pcm_samples, d.tempo_x100, d.underruns, d.waiting};
+    (*env)->SetLongArrayRegion(env, out, 0, 8, values);
+    if ((*env)->ExceptionCheck(env)) {
+        DEBUG_ERROR(DEBUG_CATEGORY_CALL, "call diagnostics: JNI snapshot copy failed");
+        return JNI_FALSE;
+    }
+    return JNI_TRUE;
+}
+
 /* ── nativeCallAudioPull(callId, out) → возвращает число сэмплов ──
  * out — предвыделенный ShortArray (960), заполняется из аудио-потока Kotlin. */
 JNIEXPORT jint JNICALL Java_com_utun_chat_data_NativeLib_nativeCallAudioPull(