feat: 6ch 필터 + 도넛 확대 + Fill/Level 기준 변경 + 슬라이딩 윈도우

BV 계산:
- 6채널 모두 수신(buffer>=20) 시에만 BV 계산 (불완전 데이터 제외)

도넛 차트:
- 크기: compact 180→220dp, normal 240→280dp
- 선 두께: 20→22, 28→30dp
- 캐릭터: 70→80, 100→110dp
- 볼륨 텍스트: 16→18sp, maxVolumeMl → lastVolumeMl 표시

Info Cards:
- Fill: appState.fillPercentage → lastVolumeMl/maxVolume×100 (실측 기준)
- Level: appState.bladderLevel → lastVolumeMl/maxVolume×MAX_LEVEL
- 미측정 시 "—" 표시

Auto 측정:
- 배치 윈도우 → 슬라이딩 윈도우 (최대 10개 유지, 오래된 것 제거)
- 5개 이상이면 매 측정마다 trimmed mean 업데이트
- 이전: 10개 모이면 한 번에 업데이트 → clear
- 변경: [1,2,3,4,5]→출력, [2,3,4,5,6]→출력 (실시간 반영)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/src/main/java/com/example/medilightv2android/ui/views/monitoring/PiezoMonitoringView.kt

@@ -151,7 +151,8 @@ fun PiezoMonitoringView(appState: AppState) {
                 var totalWallCount = 0
 
                 val validChannels = channels.filter { it.isValid }
-                if (validChannels.isNotEmpty()) {
+                val allChannelsReceived = channels.filter { it.buffer.size >= 20 }.size >= 6
+                if (validChannels.isNotEmpty() && allChannelsReceived) {
                     val method = com.example.medilightv2android.managers.GreenZoneConstants.detectionMethod
                     val analyzerA = com.example.medilightv2android.managers.PiezoEchoAnalyzerA.shared
 
@@ -287,18 +288,20 @@ fun PiezoMonitoringView(appState: AppState) {
                 handler.post {
                     if (finalRawVol != null && finalRawVol > 0) {
                         if (isAutoMeasuring) {
-                            if (finalTotalWalls >= 4) {
+                            if (allChannelsReceived) {
                                 autoVolumeWindow.add(finalRawVol)
-                                Log.d("PiezoMonitor", "AUTO window[${autoVolumeWindow.size}/$autoWindowSize] +${"%.1f".format(finalRawVol)}ml (valid=$finalTotalWalls)")
+                                // 슬라이딩 윈도우: 오래된 값 제거
+                                while (autoVolumeWindow.size > autoWindowSize) autoVolumeWindow.removeAt(0)
+                                Log.d("PiezoMonitor", "AUTO window[${autoVolumeWindow.size}/$autoWindowSize] +${"%.1f".format(finalRawVol)}ml")
                             } else {
-                                Log.d("PiezoMonitor", "AUTO skip ${"%.1f".format(finalRawVol)}ml (valid=$finalTotalWalls < 4)")
+                                Log.d("PiezoMonitor", "AUTO skip ${"%.1f".format(finalRawVol)}ml (channels incomplete)")
                             }
-                            if (autoVolumeWindow.size >= autoWindowSize) {
+                            // 윈도우에 5개 이상이면 매번 trimmed mean 업데이트
+                            if (autoVolumeWindow.size >= 5) {
                                 val displayVol = trimmedMean(autoVolumeWindow.toList())
                                 lastVolumeMl = displayVol
                                 maxVolumeMl = maxOf(maxVolumeMl, displayVol)
                                 Log.d("PiezoMonitor", "AUTO trimmedMean=${"%.1f".format(displayVol)}ml from ${autoVolumeWindow.map { "%.0f".format(it) }}")
-                                autoVolumeWindow.clear()
                             }
                         } else {
                             lastVolumeMl = finalRawVol
@@ -753,20 +756,20 @@ fun PiezoMonitoringView(appState: AppState) {
             )
 
             // Donut chart with Bladdy
-            val donutSize = if (isCompact) 180.dp else 240.dp
+            val donutSize = if (isCompact) 220.dp else 280.dp
             Box(contentAlignment = Alignment.Center) {
                 DonutChartView(
                     progress = appState.bladderLevel.progress,
                     urgency = urgency,
-                    lineWidth = if (isCompact) 20.dp else 28.dp,
+                    lineWidth = if (isCompact) 22.dp else 30.dp,
                     size = donutSize
                 )
                 Column(horizontalAlignment = Alignment.CenterHorizontally) {
-                    BladdyRiveView(urgency = urgency, size = if (isCompact) 70.dp else 100.dp)
+                    BladdyRiveView(urgency = urgency, size = if (isCompact) 80.dp else 110.dp)
                     Spacer(modifier = Modifier.height(4.dp))
                     Text(
-                        if (maxVolumeMl > 0) "${"%.0f".format(maxVolumeMl)} ml" else "${appState.estimatedVolume} ml",
-                        fontSize = 16.sp,
+                        if (lastVolumeMl > 0) "${"%.0f".format(lastVolumeMl)} ml" else "${appState.estimatedVolume} ml",
+                        fontSize = 18.sp,
                         fontWeight = FontWeight.Bold,
                         color = urgency.accentColor,
                         modifier = Modifier
@@ -778,12 +781,15 @@ fun PiezoMonitoringView(appState: AppState) {
                 }
             }
 
-            // Info cards
+            // Info cards (Fill/Level은 maxVolume 기준)
+            val maxVol = appState.piezoSettings.maxVolume.toDouble()
+            val fillPct = if (maxVol > 0 && lastVolumeMl > 0) (lastVolumeMl / maxVol * 100).coerceAtMost(100.0) else 0.0
+            val levelVal = if (maxVol > 0 && lastVolumeMl > 0) ((lastVolumeMl / maxVol) * BladderLevel.MAX_LEVEL).toInt().coerceIn(0, BladderLevel.MAX_LEVEL) else 0
             Row(horizontalArrangement = Arrangement.spacedBy(12.dp)) {
-                val displayVol = if (lastVolumeMl > 0) "%.0f".format(lastVolumeMl) else "${appState.estimatedVolume}"
+                val displayVol = if (lastVolumeMl > 0) "%.0f".format(lastVolumeMl) else "—"
                 InfoCard("Volume", displayVol, "ml", urgency.accentColor, Modifier.weight(1f))
-                InfoCard("Fill", String.format("%.0f", appState.fillPercentage), "%", urgency.accentColor, Modifier.weight(1f))
-                InfoCard("Level", "${appState.bladderLevel.currentLevel}/${BladderLevel.MAX_LEVEL}", "", urgency.accentColor, Modifier.weight(1f))
+                InfoCard("Fill", if (fillPct > 0) "%.0f".format(fillPct) else "—", "%", urgency.accentColor, Modifier.weight(1f))
+                InfoCard("Level", if (levelVal > 0) "$levelVal/${BladderLevel.MAX_LEVEL}" else "—", "", urgency.accentColor, Modifier.weight(1f))
             }
 
             // Control buttons: Void/Catheterize / Auto / Spot