fix(map): worked grids follow the selected operated grid; add All option

Switching the operated-grid selector now re-filters the green worked
cells on the map (the overlay receives the per-grid worked set instead
of the global one, on every recomposition via setGridMode). Previously
only the VUCC progress count changed while the map stayed green for all
operated grids.

The selector gains an 'All (n)' entry at the bottom of the list: it
selects no operated grid (null), showing every worked grid combined and
restoring the global VUCC count.

feature/map/src/main/java/com/rtbishop/look4sat/feature/map/MapScreen.kt

@@ -207,8 +207,13 @@ private fun MapScreen(uiState: MapState, onAction: (MapAction) -> Unit, mapView:
             if (p.type == AwardType.VUCC) p.copy(workedKeys = vuccGrids, count = vuccGrids.size) else p
         }
     }
-    // Attach the tap listener whenever grid mode / worked grids change.
+    // Worked grids drawn on the map: filtered by the selected operated grid
-    val workedGrids = uiState.workedGrids
+    // (null = all operated grids). Drives both the green fills and the tap
+    // listener below, so switching the selector changes which cells are green.
+    val workedGrids = remember(uiState.workedGrids, vuccByMyGrid, selectedMyGrid) {
+        if (selectedMyGrid == null) uiState.workedGrids
+        else vuccByMyGrid[selectedMyGrid] ?: emptySet()
+    }
     val isGridMode = uiState.isGridMode
     DisposableEffect(isGridMode, workedGrids) {
         val receiver = object : org.osmdroid.events.MapEventsReceiver {
@@ -297,7 +302,7 @@ private fun MapScreen(uiState: MapState, onAction: (MapAction) -> Unit, mapView:
                         // stationPosition would swallow the centering forever.
                         val shouldCenter = uiState.isGridMode && !prevGridMode
                         setGridMode(
-                            uiState.isGridMode, uiState.workedGrids, uiState.roamedGrids, view,
+                            uiState.isGridMode, workedGrids, uiState.roamedGrids, view,
                             uiState.stationPosition,
                             centerOnStation = shouldCenter
                         )
@@ -322,11 +327,12 @@ private fun MapScreen(uiState: MapState, onAction: (MapAction) -> Unit, mapView:
                     }
                 }
                 // Top-left: operated-grid selector for VUCC counting (grid mode only).
-                val myGrid = selectedMyGrid
+                // Shown whenever per-grid QSO data exists; "All" (null) is available.
-                if (uiState.isGridMode && selectedAward == AwardType.VUCC && myGrid != null) {
+                if (uiState.isGridMode && selectedAward == AwardType.VUCC && vuccByMyGrid.isNotEmpty()) {
                     VuccGridSelector(
                         options = vuccByMyGrid,
-                        selected = myGrid,
+                        allCount = uiState.workedGrids.size,
+                        selected = selectedMyGrid,
                         onSelect = { selectedMyGrid = it },
                         modifier = Modifier
                             .align(Alignment.TopStart)
@@ -638,12 +644,13 @@ private fun AwardChipsRow(
 @Composable
 private fun VuccGridSelector(
     options: Map<String, Set<String>>,
-    selected: String,
+    allCount: Int,
-    onSelect: (String) -> Unit,
+    selected: String?,
+    onSelect: (String?) -> Unit,
     modifier: Modifier = Modifier
 ) {
     var expanded by remember { mutableStateOf(false) }
-    // Most-worked grid first; selection is made on tap.
+    // Most-worked grid first; selection is made on tap. "All" sits last.
     val sorted = remember(options) { options.entries.sortedByDescending { it.value.size } }
     Surface(
         color = ComposeColor.Black.copy(alpha = 0.45f),
@@ -658,7 +665,8 @@ private fun VuccGridSelector(
                     .padding(start = 10.dp, end = 6.dp, top = 4.dp, bottom = 4.dp)
             ) {
                 Text(
-                    text = "$selected (${options[selected]?.size ?: 0})",
+                    text = if (selected == null) "All ($allCount)"
+                    else "$selected (${options[selected]?.size ?: 0})",
                     color = ComposeColor.White,
                     fontSize = 12.sp,
                     fontFamily = androidx.compose.ui.text.font.FontFamily.Monospace
@@ -691,6 +699,24 @@ private fun VuccGridSelector(
                         )
                     }
                 }
+                // "All" always listed last: shows every worked grid combined.
+                Row(
+                    verticalAlignment = Alignment.CenterVertically,
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .clickable {
+                            onSelect(null)
+                            expanded = false
+                        }
+                        .padding(horizontal = 10.dp, vertical = 3.dp)
+                ) {
+                    Text(
+                        text = "All ($allCount)",
+                        color = if (selected == null) MaterialTheme.colorScheme.primary else ComposeColor.White,
+                        fontSize = 12.sp,
+                        fontFamily = androidx.compose.ui.text.font.FontFamily.Monospace
+                    )
+                }
             }
         }
     }