fix(ui): scale pinned notes grid to match column settings

PinnedNotesGrid hardcoded a two-column Row/Column layout, making
pinned notes unresponsive to adaptiveScaling and manualColumns.
Replace with BoxWithConstraints that derives columnCount using the
same logic as the outer LazyVerticalStaggeredGrid (Adaptive 150dp
or Fixed manualColumns), then distributes notes across N columns
via a single remember(notes, columnCount) derivation.

The FullLine/non-lazy structure from 1e02895 is preserved, so the
pop-in fix remains intact.

Author: inventory69

android/app/src/main/java/dev/dettmer/simplenotes/ui/main/components/NotesStaggeredGrid.kt

@@ -1,6 +1,7 @@
 package dev.dettmer.simplenotes.ui.main.components
 
 import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.BoxWithConstraints
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.Row
@@ -13,6 +14,7 @@ import androidx.compose.foundation.lazy.staggeredgrid.StaggeredGridItemSpan
 import androidx.compose.foundation.lazy.staggeredgrid.items
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.remember
+import kotlin.math.max
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
@@ -80,6 +82,8 @@ fun NotesStaggeredGrid(
             item(key = "pinned_notes_body", contentType = "PinnedSection", span = StaggeredGridItemSpan.FullLine) {
                 PinnedNotesGrid(
                     notes = pinnedNotes,
+                    adaptiveScaling = adaptiveScaling,
+                    manualColumns = manualColumns,
                     showSyncStatus = showSyncStatus,
                     selectedNoteIds = selectedNoteIds,
                     isSelectionMode = isSelectionMode,
@@ -140,43 +144,38 @@ fun NotesStaggeredGrid(
 @Composable
 private fun PinnedNotesGrid(
     notes: List<Note>,
+    adaptiveScaling: Boolean,
+    manualColumns: Int,
     showSyncStatus: Boolean,
     selectedNoteIds: Set<String>,
     isSelectionMode: Boolean,
     timestampTicker: Long,
     onNoteClick: (Note) -> Unit,
     onNoteLongClick: (Note) -> Unit
 ) {
-    val leftNotes = remember(notes) { notes.filterIndexed { i, _ -> i % 2 == 0 } }
-    val rightNotes = remember(notes) { notes.filterIndexed { i, _ -> i % 2 == 1 } }
-    Row(
-        modifier = Modifier.fillMaxWidth(),
-        horizontalArrangement = Arrangement.spacedBy(12.dp)
-    ) {
-        Column(modifier = Modifier.weight(1f), verticalArrangement = Arrangement.spacedBy(12.dp)) {
-            leftNotes.forEach { note ->
-                NoteCardGrid(
-                    note = note,
-                    showSyncStatus = showSyncStatus,
-                    isSelected = selectedNoteIds.contains(note.id),
-                    isSelectionMode = isSelectionMode,
-                    timestampTicker = timestampTicker,
-                    onClick = { onNoteClick(note) },
-                    onLongClick = { onNoteLongClick(note) }
-                )
-            }
+    BoxWithConstraints(modifier = Modifier.fillMaxWidth()) {
+        val columnCount = if (adaptiveScaling) max(1, (maxWidth / 150.dp).toInt()) else manualColumns
+        val columnedNotes = remember(notes, columnCount) {
+            (0 until columnCount).map { col -> notes.filterIndexed { i, _ -> i % columnCount == col } }
         }
-        Column(modifier = Modifier.weight(1f), verticalArrangement = Arrangement.spacedBy(12.dp)) {
-            rightNotes.forEach { note ->
-                NoteCardGrid(
-                    note = note,
-                    showSyncStatus = showSyncStatus,
-                    isSelected = selectedNoteIds.contains(note.id),
-                    isSelectionMode = isSelectionMode,
-                    timestampTicker = timestampTicker,
-                    onClick = { onNoteClick(note) },
-                    onLongClick = { onNoteLongClick(note) }
-                )
+        Row(
+            modifier = Modifier.fillMaxWidth(),
+            horizontalArrangement = Arrangement.spacedBy(12.dp)
+        ) {
+            columnedNotes.forEach { columnNotes ->
+                Column(modifier = Modifier.weight(1f), verticalArrangement = Arrangement.spacedBy(12.dp)) {
+                    columnNotes.forEach { note ->
+                        NoteCardGrid(
+                            note = note,
+                            showSyncStatus = showSyncStatus,
+                            isSelected = selectedNoteIds.contains(note.id),
+                            isSelectionMode = isSelectionMode,
+                            timestampTicker = timestampTicker,
+                            onClick = { onNoteClick(note) },
+                            onLongClick = { onNoteLongClick(note) }
+                        )
+                    }
+                }
             }
         }
     }