fix(logs): §C+E · purge dead code 활성화 + record() 통합 관문 (cloud-mvp d8425d0 이식)

app/src/main/java/com/medithings/vesiscan/MainActivity.kt

@@ -63,6 +63,18 @@ class MainActivity : ComponentActivity() {
         com.medithings.vesiscan.telemetry.AlarmAggregator.start()
         com.medithings.vesiscan.telemetry.NotificationSubscriber.start(this)
 
+        // 2026-08-04: LOG_STORAGE_ANALYSIS §C fix — 앱 시작 시 오래된 로그 자동 정리.
+        //   실패해도 필수기능 영향 없음 (silent · UC-05).
+        try {
+            val app = applicationContext
+            com.medithings.vesiscan.services.MeasurementLogService.getInstance(app)
+                .purgeOldLogs(keepDays = 365)
+            com.medithings.vesiscan.services.BleDebugLogger.getInstance(app)
+                .purgeOldLogs(keepDays = 7)
+            com.medithings.vesiscan.services.AdcCsvLogger.purgeOldSessions(keepDays = 30)
+            com.medithings.vesiscan.services.ClinicalSessionStore.purgeOldSessions(keepDays = 90)
+        } catch (_: Exception) { }
+
         enableEdgeToEdge()
         window.addFlags(android.view.WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
         setContent {

app/src/main/java/com/medithings/vesiscan/services/AdcCsvLogger.kt

@@ -121,4 +121,21 @@ object AdcCsvLogger {
             }
         } catch (_: Exception) {}
     }
+
+    /**
+     * VesiScan_ADC/ 폴더의 keepDays 일 이전 CSV 삭제 (§C purge).
+     * 2026-08-04: LOG_STORAGE_ANALYSIS Priority 3 — 시간당 40MB 누적 방지.
+     */
+    fun purgeOldSessions(keepDays: Int = 30) {
+        try {
+            val calendar = Calendar.getInstance()
+            calendar.add(Calendar.DAY_OF_YEAR, -keepDays)
+            val cutoff = SimpleDateFormat("yyyy-MM-dd", Locale.US).format(calendar.time)
+            val dir = getDir()
+            dir.listFiles { f -> f.extension == "csv" }?.forEach { file ->
+                val prefix = file.nameWithoutExtension.take(10)
+                if (prefix < cutoff) file.delete()
+            }
+        } catch (_: Exception) { }
+    }
 }

app/src/main/java/com/medithings/vesiscan/services/ClinicalSessionStore.kt

@@ -384,4 +384,23 @@ object ClinicalSessionStore {
         lastFinalizedFolder = null
         return dir
     }
+
+    /**
+     * VesiScan_Sessions/ 폴더의 keepDays 일 이전 세션 삭제 (§C purge).
+     * 2026-08-04: LOG_STORAGE_ANALYSIS Priority 3 — 시간당 최대 40MB 누적 방지.
+     * lastModified 기준. currentSession 진행 중 폴더 제외.
+     */
+    fun purgeOldSessions(keepDays: Int = 90) {
+        runCatching {
+            val cutoffMs = System.currentTimeMillis() - keepDays * 24L * 3600L * 1000L
+            val activeFolder = currentLogDir()
+            val downloads = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
+            val root = File(downloads, "VesiScan_Sessions")
+            if (!root.exists() || !root.isDirectory) return@runCatching
+            root.listFiles { f -> f.isDirectory }?.forEach { folder ->
+                if (folder == activeFolder) return@forEach
+                if (folder.lastModified() < cutoffMs) folder.deleteRecursively()
+            }
+        }
+    }
 }

app/src/main/java/com/medithings/vesiscan/services/MeasurementLogService.kt

@@ -53,6 +53,38 @@ class MeasurementLogService private constructor(private val context: Context) {
 
     // -- Log Events --
 
+    /**
+     * 통합 관문 (2026-08-04 · LOG_STORAGE_ANALYSIS §E fix).
+     * 호출부는 이 함수 하나만 호출하면 4개 sink 자동 fan-out.
+     * 기존 개별 함수는 그대로 유지 (backwards compat).
+     */
+    fun record(outcome: MeasurementOutcome): Int {
+        val scanId = outcome.scanId
+            ?: com.medithings.vesiscan.services.AdcCsvLogger.nextScanId()
+        runCatching {
+            com.medithings.vesiscan.ble.BleManager.current?.debugLogger?.measurementResult(
+                volumeMl = outcome.volumeMl,
+                lrRatio = outcome.lrRatio,
+                validChannels = outcome.validChannels,
+                urineLines = outcome.urineLines,
+                otsuThreshold = outcome.otsuThreshold,
+                scanId = scanId,
+            )
+        }
+        runCatching {
+            logMeasurement(outcome.volumeMl, outcome.channels, outcome.rawADC, scanId = scanId)
+        }
+        runCatching {
+            com.medithings.vesiscan.services.AdcCsvLogger.log(
+                outcome.rawADC,
+                outcome.volumeMl,
+                outcome.lrRatio,
+                scanId = scanId,
+            )
+        }
+        return scanId
+    }
+
     /**
      * Log a spot measurement result.
      */
@@ -247,3 +279,18 @@ data class ChannelLogEntry(
     val urineLen: Int? = null,
     val score: Double? = null
 )
+
+/**
+ * 단일 측정 사이클의 모든 sink 에 fan-out 될 결과 (2026-08-04 · §E 통합 관문 입력).
+ * scanId = null 이면 record() 가 자동 발급.
+ */
+data class MeasurementOutcome(
+    val volumeMl: Double?,
+    val lrRatio: Double = 1.0,
+    val rawADC: List<List<UShort>>,
+    val channels: List<ChannelLogEntry>,
+    val validChannels: Int = 0,
+    val urineLines: List<Int> = emptyList(),
+    val otsuThreshold: Double = 0.0,
+    val scanId: Int? = null,
+)