fix(radar,settings): realtime doppler freq in Log tab, trash overlay fix, sub-menu swap (4.5.2 overwrite 5)

User-test fixes:
1. Log tab frequency now refreshes every second with the transponder
   panel (multi-Doppler): selectedRadio derived by uuid from the
   per-second transceivers list instead of a remembered stale
   reference; display and upload use radio.uplinkLow/downlinkLow
   (the same doppler-corrected values the transceiver panel shows).
2. SwipeDeleteRow: content layer now has an opaque background so the
   trash icon only appears while swiping (was bleeding through into
   the "Sent" column).
3. Settings page order: More-menu items can now move back into the
   main menu - button always visible; when the main menu is full (5),
   the last non-Settings item is automatically swapped into More.

Verified: check_strings OK (8 files); :app:compileDebugKotlin
BUILD SUCCESSFUL.

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

@@ -110,8 +110,9 @@ fun LogTab(
         }
 
         // 转发器选择(下拉选择框): 选中后底下出现输入区
+        // 选中项按 uuid 从 transceivers 实时派生(多普勒频率每秒更新, 频率显示随之刷新)
         var menuExpanded by remember { mutableStateOf(false) }
-        var selectedRadio by remember { mutableStateOf<SatRadio?>(null) }
+        val selectedRadio = transceivers.firstOrNull { it.uuid == selectedUuid }
         ExposedDropdownMenuBox(
             expanded = menuExpanded,
             onExpandedChange = { menuExpanded = it }
@@ -141,7 +142,7 @@ fun LogTab(
                             )
                         },
                         onClick = {
-                            selectedRadio = radio
+                            selectedUuid = radio.uuid
                             menuExpanded = false
                         }
                     )
@@ -234,8 +235,8 @@ private fun ExpandedLogInput(
     fun submit() {
         val call = callsign.trim().uppercase()
         if (call.length < 3) return
-        // 频率直接取转发器栏的数字(不再多普勒再计算): TX = 当前调谐, RX = 下行基准
-        val tx = txBaseFrequencyHz ?: (radio.uplinkLow ?: radio.downlinkLow ?: 0L)
+        // 频率直接取转发器栏的数字(radio 每秒多普勒修正, 回车那一秒的值)
+        val tx = radio.uplinkLow ?: radio.downlinkLow ?: 0L
         val rx = radio.downlinkLow ?: radio.uplinkLow ?: 0L
         queue.add(
             WavelogQso(
@@ -253,8 +254,8 @@ private fun ExpandedLogInput(
         showToast(savedMsg)
     }
 
-    // 频率显示与转发器栏完全一致: TX 行 + RX 行(线性附加频段范围)
-    val txForDisplay = txBaseFrequencyHz ?: (radio.uplinkLow ?: radio.downlinkLow ?: 0L)
+    // 频率显示与转发器栏完全一致: TX 行 + RX 行(radio 来自每秒多普勒重算, 实时刷新)
+    val txForDisplay = radio.uplinkLow ?: radio.downlinkLow ?: 0L
     val rxForDisplay = radio.downlinkLow ?: radio.uplinkLow ?: 0L
     val upLow = radio.uplinkLow
     val upHigh = radio.uplinkHigh
@@ -412,9 +413,10 @@ internal fun SwipeDeleteRow(
                 )
             }
         }
-        // 内容层(跟手滑动)
+        // 内容层(跟手滑动): 不透明背景确保平时完全盖住垃圾桶, 仅左滑露出
         Box(
             modifier = Modifier
+                .background(MaterialTheme.colorScheme.surfaceContainer)
                 .offset { IntOffset(animatedOffset.roundToInt(), 0) }
                 .pointerInput(Unit) {
                     detectHorizontalDragGestures(

feature/settings/src/main/java/com/rtbishop/look4sat/feature/settings/SettingsScreen.kt

@@ -780,12 +780,20 @@ private fun UiSettingsCard(
                 items = subItems,
                 labels = screens,
                 moveLabel = stringResource(id = R.string.prefs_ui_move_back),
-                moveEnabled = { mainItems.size < 5 },
+                // 按钮常显; 主菜单满 5 时自动让位(最后一个非"设置"项移入更多, 交换)
+                moveEnabled = { true },
                 onMove = { name ->
-                    onUpdateMenu(
-                        (screenOrder.ifEmpty { defaultScreenOrder } + name).distinct(),
-                        subItems.filter { it != name }
-                    )
+                    val mainWithoutSettings = mainItems.filter { it != "Settings" }
+                    val needSwap = mainWithoutSettings.size >= 5
+                    val evicted = if (needSwap) mainWithoutSettings.last() else null
+                    val newMain = if (needSwap) {
+                        (mainWithoutSettings.dropLast(1) + name).distinct()
+                    } else {
+                        (mainWithoutSettings + name).distinct()
+                    }
+                    val newSub = (subItems.filter { it != name } +
+                        if (evicted != null) listOf(evicted) else emptyList()).distinct()
+                    onUpdateMenu(newMain, newSub)
                 },
                 onReorder = { sub -> onUpdateMenu(screenOrder, sub) }
             )