Reopen call output on confirmed routes and recompute AEC from physical latency

tools/chatgui-android/app/src/test/java/com/utun/chat/data/CallAudioTimingTest.kt

@@ -4,6 +4,13 @@ import org.junit.Assert.*
 import org.junit.Test
 
 class CallAudioTimingTest {
+    @Test fun capturePendingIncludesAgeOfHardwareTimestamp() {
+        assertEquals(960L, callCapturePendingFrames(4800, 4320, 970_000_000, 1_000_000_000))
+        assertEquals(0L, callCapturePendingFrames(4800, 4800, 1_000_000_000, 1_000_000_000))
+        assertNull(callCapturePendingFrames(4800, 4320, 100_000_000, 1_000_000_000))
+        assertNull(callCapturePendingFrames(4800, -1, 970_000_000, 1_000_000_000))
+    }
+
     @Test fun playbackUsesPresentationTimeAndMonotonicWrittenAnchor() {
         val c = CallPlaybackClock()
         val fallback = c.update(9600, 8640, 1_000_000, 1, 1, -1, -1)!!