feat(radar): 生成通联记录帖子只含当前过境窗口

generatePost 的筛选从最近 24 小时改为当前过境窗口（aos..los），
与日志列表 recent 同一套过滤逻辑，不再混入其他过境的 QSO

feature/radar/src/main/java/com/rtbishop/look4sat/feature/radar/LogPage.kt

@@ -178,7 +178,7 @@ fun LogPage(
 
         Row(horizontalArrangement = Arrangement.spacedBy(6.dp), modifier = Modifier.fillMaxWidth()) {
             OutlinedButton(
-                onClick = { logViewModel.generatePost(satName, maxElev) },
+                onClick = { logViewModel.generatePost(satName, maxElev, passWindow) },
                 enabled = recent.isNotEmpty(),
                 modifier = Modifier.weight(1f)
             ) { Text("生成通联记录", fontSize = 13.sp) }

feature/radar/src/main/java/com/rtbishop/look4sat/feature/radar/LogViewModel.kt

@@ -142,16 +142,16 @@ class LogViewModel(
      */
     fun updateRecord(record: QsoRecord) = viewModelScope.launch { qsoRepository.save(record) }
 
-    /** English social post from the recorded QSOs of the current satellite (last 24h). */
-    fun generatePost(satName: String, maxElev: Double) {
+    /** English social post from the recorded QSOs of the current satellite.
+     *  Same window logic as the on-screen list: only the current pass (aos..los). */
+    fun generatePost(satName: String, maxElev: Double, passWindow: ClosedRange<Long>?) {
         viewModelScope.launch {
-            val now = System.currentTimeMillis()
             // Records carry the ARRL name while the pass carries the tracker's name, so the
             // operator's own contacts are collected by identity, not by the raw name.
             val identity = satelliteIdentity(satName)
             val list = qsoRepository.records.first()
                 .filter { satelliteIdentity(it.satelliteName) == identity }
-                .filter { it.startUtcMillis > now - 24 * 3_600_000L }
+                .filter { passWindow?.contains(it.startUtcMillis) == true }
                 .sortedBy { it.startUtcMillis }
             if (list.isEmpty()) return@launch
             val shortName = officialSatelliteName(satName).substringBefore('(').trim().uppercase(Locale.US)