diagnostics(mutual): log prefill scroll path under tag Look4SatMutual

Temporary Log.d probes at prefill, list-layout gate, scroll effect entry,
scrollToItem outcome and consume, to locate why the map Match prefill
scroll does not land on the device (Robolectric covers it). Bump 12.5.

feature/mutual/src/main/java/com/rtbishop/look4sat/feature/mutual/MutualScreen.kt

@@ -17,6 +17,7 @@
  */
 package com.rtbishop.look4sat.feature.mutual
 
+import android.util.Log
 import androidx.compose.animation.AnimatedVisibility
 import androidx.compose.animation.expandVertically
 import androidx.compose.animation.shrinkVertically
@@ -229,11 +230,17 @@ private fun MutualContent(
     // page stays at the top). onGloballyPositioned fires on the first real
     // layout, so the subsequent scrollToItem always has a measured list.
     var listReady by remember { mutableStateOf(false) }
+    Log.d(TAG, "composed: scrollToTimeRange=${state.scrollToTimeRange} matchIndex=${if (state.errorMessage != null) 2 else 1} listReady=$listReady")
 
     LazyColumn(
         modifier = Modifier
             .fillMaxSize()
-            .onGloballyPositioned { listReady = true },
+            .onGloballyPositioned {
+                if (!listReady) {
+                    Log.d(TAG, "lazy list laid out, opening prefill scroll gate")
+                    listReady = true
+                }
+            },
         state = listState,
         verticalArrangement = Arrangement.spacedBy(6.dp)
     ) {
@@ -390,13 +397,23 @@ private fun MutualContent(
     // Compose version (verified in tests), while scrollToItem lands correctly.
     val matchSearchIndex = if (state.errorMessage != null) 2 else 1
     LaunchedEffect(state.scrollToTimeRange, matchSearchIndex, listReady) {
+        Log.d(TAG, "scroll effect: scrollToTimeRange=${state.scrollToTimeRange} matchIndex=$matchSearchIndex listReady=$listReady")
         if (state.scrollToTimeRange && listReady) {
-            listState.scrollToItem(matchSearchIndex)
+            Log.d(TAG, "attempting scrollToItem($matchSearchIndex)")
+            try {
+                listState.scrollToItem(matchSearchIndex)
+                Log.d(TAG, "scrollToItem($matchSearchIndex) done, firstVisible=${listState.firstVisibleItemIndex}")
+            } catch (t: Throwable) {
+                Log.e(TAG, "scrollToItem($matchSearchIndex) threw", t)
+            }
             viewModel.consumeScrollToTimeRange()
+            Log.d(TAG, "scrollToTimeRange consumed")
         }
     }
 }
 
+private const val TAG = "Look4SatMutual"
+
 @Composable
 private fun MutualStatusChip(state: MutualUiState) {
     val colorScheme = MaterialTheme.colorScheme

feature/mutual/src/main/java/com/rtbishop/look4sat/feature/mutual/MutualViewModel.kt

@@ -40,6 +40,8 @@ import kotlinx.coroutines.withContext
 import kotlin.math.PI
 import kotlin.math.roundToInt
 
+private const val TAG = "Look4SatMutual"
+
 data class MutualUiState(
     val stationALat: String = "",
     val stationALon: String = "",
@@ -197,6 +199,7 @@ class MutualViewModel(
     fun prefillMatchFromGrid(grid: String) {
         val g = grid.trim().uppercase()
         val pos = qthToPosition(g)
+        android.util.Log.d(TAG, "prefillMatchFromGrid('$g')")
         _uiState.update {
             it.copy(
                 stationBGrid = g,
@@ -210,6 +213,7 @@ class MutualViewModel(
     }
 
     fun consumeScrollToTimeRange() {
+        android.util.Log.d(TAG, "consumeScrollToTimeRange")
         _uiState.update { it.copy(scrollToTimeRange = false) }
     }