fix(settings): drag-reorder tracks live position; grip becomes a single dot

Two drag issues from user testing:
1. Only adjacent swaps worked - the drag gesture could not move an
   item past multiple positions. Root cause: the pointerInput closure
   kept the index captured at composition; after the live swap
   (items.add(target, removeAt(index))) the closure's index was
   stale, so subsequent targets were computed from the wrong origin
   and the saved order got corrupted (also made previously moved
   items snap back).
   Fix: track the dragged item's live position via draggingIndex -
   onDragStart resolves it with items.indexOf(screen), onDrag computes
   the target from draggingIndex and updates it after each swap.
2. The six-dot grip icon was ugly; replaced with a single 8dp themed
   dot (Box + CircleShape inside the 48dp touch area, onSurfaceVariant
   color). ic_drag.xml removed.

What's-new rewritten in en/zh/tr with ONLY this release's changes
(user rule: replace, never append history). Version stays 4.4.9
(覆盖 per user). Verified: settings + app compile, check_strings.py
clean.

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

@@ -22,15 +22,19 @@ import android.os.Build
 import androidx.activity.compose.rememberLauncherForActivityResult
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.foundation.clickable
+import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxHeight
+import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.heightIn
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.gestures.detectDragGestures
 import androidx.compose.foundation.layout.height
@@ -639,23 +643,22 @@ private fun DragOrderList(
                     text = stringResource(id = screen.first),
                     modifier = Modifier.weight(1f)
                 )
-                Icon(
-                    painter = painterResource(id = R.drawable.ic_drag),
-                    contentDescription = stringResource(id = R.string.prefs_ui_order_title),
-                    tint = MaterialTheme.colorScheme.onSurfaceVariant,
+                Box(
                     modifier = Modifier
                         .size(48.dp)
+                        .padding(20.dp)
                         .pointerInput(screen.second) {
                             detectDragGestures(
-                                onDragStart = { draggingIndex = index },
+                                onDragStart = { draggingIndex = items.indexOf(screen) },
                                 onDrag = { change, dragAmount ->
                                     change.consume()
                                     dragOffset += dragAmount.y
-                                    val target = (index + (dragOffset / itemHeightPx).roundToInt())
+                                    val currentIndex = draggingIndex
+                                    val target = (currentIndex + (dragOffset / itemHeightPx).roundToInt())
                                         .coerceIn(0, items.size - 1)
-                                    if (target != index) {
-                                        items.add(target, items.removeAt(index))
-                                        dragOffset += (index - target) * itemHeightPx
+                                    if (target != currentIndex) {
+                                        items.add(target, items.removeAt(currentIndex))
+                                        dragOffset += (currentIndex - target) * itemHeightPx
                                         draggingIndex = target
                                     }
                                 },
@@ -670,7 +673,14 @@ private fun DragOrderList(
                                 }
                             )
                         }
-                )
+                ) {
+                    // 小圆点手柄(触控区 padding 20dp 居中 -> 8dp 圆点)
+                    Box(
+                        modifier = Modifier
+                            .fillMaxSize()
+                            .background(MaterialTheme.colorScheme.onSurfaceVariant, CircleShape)
+                    )
+                }
             }
         }
     }