feat: 펌웨어 버전을 모든 로그 파일에 직접 노출

기존: meta.json에만 기록 (파일 단독으로 보면 펌웨어 확인 불가)
변경: adc.csv 컬럼 / placements.jsonl·events.jsonl 필드 / ble.log 헤더 블록 모두 노출

검사자/분석자가 각 파일 단독으로 열어도 어느 펌웨어 데이터인지 즉시 확인 가능.

변경:
- BleManager.current: companion에 instance accessor 추가 (logger 같은 context-free 컴포넌트에서 BLE state 읽기용)
- BleManager rid: 핸들러에서 debugLogger.deviceInfo(fw, hw, sn) 호출 (Headers 블록 기록)
- AdcCsvLogger: CSV 헤더에 firmware_version 컬럼 추가, 모든 행에 값 채움
  scan_id,timestamp,clinical_label,firmware_version,volume_ml,lr_ratio,...
- MeasurementLogService.logMeasurement / logPlacement: JSON에 firmware_version 필드 추가
- BleDebugLogger.deviceInfo(): 새 메서드. rid: 응답 받은 후 ble.log에 다음 블록 기록:
  ─── Device Info ───
  Firmware:  VBTFW0116
  Hardware:  VBTHW0100
  Serial:    VBT26040001
  ───────────────────

BLE 미연결 / mid 응답 안 옴 시엔 필드/값 비어있음 (정상). 응답 받자마자 자동 갱신.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

app/src/main/java/com/example/medilightv2android/ble/BleManager.kt

@@ -39,6 +39,9 @@ class BleManager private constructor(private val context: Context) {
                 instance ?: BleManager(context.applicationContext).also { instance = it }
             }
 
+        /** Logger 같은 context-free 컴포넌트에서 BLE state 읽기용. instance 생성 후에만 non-null. */
+        val current: BleManager? get() = instance
+
         val SERVICE_UUID: UUID = UUID.fromString("6E400001-B5A3-F393-E0A9-E50E24DCCA9E")
         val TX_CHAR_UUID: UUID = UUID.fromString("6E400002-B5A3-F393-E0A9-E50E24DCCA9E")
         val RX_CHAR_UUID: UUID = UUID.fromString("6E400003-B5A3-F393-E0A9-E50E24DCCA9E")
@@ -980,12 +983,16 @@ class BleManager private constructor(private val context: Context) {
                 debugLogger.info("DEVICE_INFO $info")
                 // 형식: "VBTHW0100   VBT26040001 VBTFW0111" (HW, Serial, FW)
                 val parts = info.split(Regex("\\s+")).filter { it.isNotBlank() }
+                val hw = parts.firstOrNull { it.startsWith("VBTHW") } ?: ""
+                val fw = parts.firstOrNull { it.startsWith("VBTFW") } ?: ""
+                val sn = parts.firstOrNull { it.startsWith("VBT") && !it.startsWith("VBTHW") && !it.startsWith("VBTFW") } ?: ""
                 handler.post {
-                    parts.firstOrNull { it.startsWith("VBTHW") }?.let { hardwareVersion.value = it }
+                    if (hw.isNotEmpty()) hardwareVersion.value = hw
-                    parts.firstOrNull { it.startsWith("VBTFW") }?.let { firmwareVersion.value = it }
+                    if (fw.isNotEmpty()) firmwareVersion.value = fw
-                    parts.firstOrNull { it.startsWith("VBT") && !it.startsWith("VBTHW") && !it.startsWith("VBTFW") }
+                    if (sn.isNotEmpty()) serialNumber.value = sn
-                        ?.let { serialNumber.value = it }
                 }
+                // ble.log에 헤더 블록 형태로 (텍스트 에디터로 열었을 때 즉시 보임)
+                debugLogger.deviceInfo(fw, hw, sn)
             }
             "rls:" -> {
                 val state = if (data.size >= 5) data[4].toInt() and 0xFF else -1

app/src/main/java/com/example/medilightv2android/services/AdcCsvLogger.kt

@@ -70,11 +70,13 @@ object AdcCsvLogger {
             val sgStr = if (analyzer.useSgFilter) "ON" else "OFF"
 
             val clinicalLabel = ClinicalSessionStore.currentLabel()  // 일반 모드면 ""
+            // BLE 펌웨어 버전 (연결 안 됐으면 "")
+            val fwVersion = com.example.medilightv2android.ble.BleManager.current?.firmwareVersion?.value ?: ""
 
             java.io.FileWriter(file, !isNew).buffered().use { writer ->
                 if (isNew) {
                     val header = buildString {
-                        append("scan_id,timestamp,clinical_label,volume_ml,lr_ratio,threshold,dps,sg_filter,channel")
+                        append("scan_id,timestamp,clinical_label,firmware_version,volume_ml,lr_ratio,threshold,dps,sg_filter,channel")
                         for (i in 0 until 100) append(",s$i")
                     }
                     writer.write(header)
@@ -83,7 +85,7 @@ object AdcCsvLogger {
 
                 for ((chIdx, buffer) in channels.withIndex()) {
                     val row = buildString {
-                        append("$scanCounter,$timestamp,$clinicalLabel,$volStr,$lrStr,$thrStr,$dpsStr,$sgStr,CH$chIdx")
+                        append("$scanCounter,$timestamp,$clinicalLabel,$fwVersion,$volStr,$lrStr,$thrStr,$dpsStr,$sgStr,CH$chIdx")
                         for (sample in buffer) {
                             append(",${sample.toInt()}")
                         }

app/src/main/java/com/example/medilightv2android/services/BleDebugLogger.kt

@@ -130,6 +130,15 @@ class BleDebugLogger private constructor(private val context: Context) {
         add(Entry(System.currentTimeMillis(), Level.RSSI, "RSSI=$value dBm", rssi = value))
     }
 
+    /** mid?/rid: 응답 받은 후 호출 — 펌웨어 정보를 ble.log에 보기 좋게 헤더 형태로 기록 */
+    fun deviceInfo(fw: String, hw: String, sn: String) {
+        appendToFile("─── Device Info ───")
+        if (fw.isNotEmpty()) appendToFile("Firmware:  $fw")
+        if (hw.isNotEmpty()) appendToFile("Hardware:  $hw")
+        if (sn.isNotEmpty()) appendToFile("Serial:    $sn")
+        appendToFile("───────────────────")
+    }
+
     fun connected(name: String, address: String) {
         deviceName = name
         sessionStart = System.currentTimeMillis()

app/src/main/java/com/example/medilightv2android/services/MeasurementLogService.kt

@@ -69,6 +69,9 @@ class MeasurementLogService private constructor(private val context: Context) {
             put("app_version_code", appVersionCode)
             val clinical = ClinicalSessionStore.currentLabel()
             if (clinical.isNotEmpty()) put("clinical_label", clinical)
+            // BLE 펌웨어 버전 (연결 시 mid?/rid: 응답에서 받음)
+            val fw = com.example.medilightv2android.ble.BleManager.current?.firmwareVersion?.value
+            if (!fw.isNullOrEmpty()) put("firmware_version", fw)
         }
 
         if (volumeMl != null) {
@@ -132,6 +135,9 @@ class MeasurementLogService private constructor(private val context: Context) {
             if (score >= 0) put("score", score)
             val clinical = ClinicalSessionStore.currentLabel()
             if (clinical.isNotEmpty()) put("clinical_label", clinical)
+            // BLE 펌웨어 버전
+            val fw = com.example.medilightv2android.ble.BleManager.current?.firmwareVersion?.value
+            if (!fw.isNullOrEmpty()) put("firmware_version", fw)
         }
         appendLog(entry, "placements.jsonl")
     }