fix: detachment 비활성화 + incomplete retry 제거 (c3eba58 기반 안정화)

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

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

@@ -107,17 +107,6 @@ fun PiezoMonitoringView(appState: AppState) {
 
         bleManager.piezoCollector.onMultiChannelComplete = { channels ->
             handler.post {
-                // 6채널 미만 수신 → 자동 retry (패킷 드랍 대응)
-                val receivedCount = channels.count { it.buffer.isNotEmpty() }
-                if (receivedCount < 6 && measureRetryCount < maxMeasureRetries) {
-                    measureRetryCount++
-                    Log.w("PiezoMonitor", "Incomplete: $receivedCount/6 channels — retry $measureRetryCount")
-                    bleManager.debugLogger.warn("INCOMPLETE_SCAN $receivedCount/6 — retry $measureRetryCount")
-                    bleManager.piezoCollector.reset()
-                    bleManager.sendChannelsOnly()
-                    return@post
-                }
-
                 lastMultiChannelResult.clear()
                 lastMultiChannelResult.addAll(channels)
 

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

@@ -341,7 +341,7 @@ fun PlacementGuideView(appState: AppState) {
                     val buffers = channels.sortedBy { it.channel }.map { it.buffer }
                     val detachResult = DetachmentDetection.detect(buffers)
 
-                    if (detachResult.isDetached) {
+                    if (false) { // detachment 비활성화
                         directionHint = "Sensor detached — check contact"
                         directionIcon = "exclamationmark.triangle"
                         placementScore = 0