feat(ui): replace filter chips with BottomSheet + sort options

- Filter button with badge next to search bar
- BottomSheet with filter dropdowns (Kategorie, Lagerort, Ablauf)
- Sort options: Name, Ablaufdatum, Menge (asc/desc)
- 'Alle zurücksetzen' button to clear filters + sort
- docs(genome): Konzept nach .github/genome/ verschoben

.github/prompts/genome.prompt.md

@@ -6,7 +6,7 @@ tools: [read, edit, search, execute]
 
 # Genome Engine
 
-> **Konzept-Dokument:** `docs/genome-engine.md` · **Skill-Doku:** `.github/skills/genome/SKILL.md`
+> **Konzept-Dokument:** `.github/genome/Concept Genome Engine.md` · **Skill-Doku:** `.github/skills/genome/SKILL.md`
 
 Du orchestrierst die 3 Phasen der Genome Engine: **Extraction → Distillation → Propagation**.
 

.github/skills/genome/SKILL.md

@@ -43,7 +43,7 @@ Der Router-Prompt fragt nach Quell-Repo und Zeitspanne, dann orchestriert er all
 | `genome.prompt.md`                           | `.github/prompts/`       | Orchestrator (Router für alle 3 Phasen) |
 | `genome-distill.prompt.md`                   | `.github/prompts/`       | Phase 2: Klassifizierung + Scoring      |
 | `genome-propagate.prompt.md`                 | `.github/prompts/`       | Phase 3: Patch-Generierung für Ziel     |
-| `genome-engine.md`                           | `docs/`                  | Vollständiges Konzept-Dokument          |
+| `Concept Genome Engine.md`              | `.github/genome/`        | Vollständiges Konzept-Dokument          |
 
 ## Trait-Erkennung
 

app/src/main/java/de/bollwerk/app/ui/item/ItemListScreen.kt

@@ -1,7 +1,6 @@
 package de.bollwerk.app.ui.item
 
 import androidx.compose.foundation.clickable
-import androidx.compose.foundation.horizontalScroll
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
@@ -11,33 +10,43 @@ import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.items
 import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.selection.selectable
+import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Add
-import androidx.compose.material.icons.filled.ArrowDropDown
 import androidx.compose.material.icons.filled.Close
 import androidx.compose.material.icons.filled.Delete
+import androidx.compose.material.icons.filled.FilterList
 import androidx.compose.material.icons.filled.MoreVert
 import androidx.compose.material.icons.filled.PhotoCamera
 import androidx.compose.material.icons.filled.Search
 import androidx.compose.material3.AlertDialog
+import androidx.compose.material3.Badge
+import androidx.compose.material3.BadgedBox
 import androidx.compose.material3.Card
 import androidx.compose.material3.DropdownMenu
 import androidx.compose.material3.DropdownMenuItem
 import androidx.compose.material3.ExperimentalMaterial3Api
-import androidx.compose.material3.FilterChip
+import androidx.compose.material3.ExposedDropdownMenuBox
+import androidx.compose.material3.ExposedDropdownMenuDefaults
 import androidx.compose.material3.FloatingActionButton
+import androidx.compose.material3.HorizontalDivider
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.MenuAnchorType
+import androidx.compose.material3.ModalBottomSheet
 import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.RadioButton
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Text
 import androidx.compose.material3.TextButton
 import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.rememberModalBottomSheetState
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
@@ -45,6 +54,7 @@ import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.semantics.Role
 import androidx.compose.ui.unit.dp
 import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
@@ -63,6 +73,7 @@ internal fun ItemListScreen(
 ) {
     val uiState by viewModel.uiState.collectAsStateWithLifecycle()
     var isMenuExpanded by remember { mutableStateOf(false) }
+    var isBottomSheetVisible by remember { mutableStateOf(false) }
 
     Scaffold(
         topBar = {
@@ -119,17 +130,12 @@ internal fun ItemListScreen(
                 .fillMaxSize()
                 .padding(innerPadding)
         ) {
-            ItemSearchBar(
+            SearchBarWithFilterButton(
                 query = uiState.searchQuery,
                 onQueryChanged = viewModel::onSearchQueryChanged,
-                onClearClick = viewModel::clearSearch
-            )
-
-            FilterChipRow(
-                uiState = uiState,
-                onCategorySelected = viewModel::onCategoryFilterChanged,
-                onLocationSelected = viewModel::onLocationFilterChanged,
-                onExpirySelected = viewModel::onExpiryFilterChanged
+                onClearClick = viewModel::clearSearch,
+                activeFilterCount = uiState.activeFilterSortCount,
+                onFilterClick = { isBottomSheetVisible = true }
             )
 
             when {
@@ -162,6 +168,18 @@ internal fun ItemListScreen(
             onDismiss = viewModel::dismissDeleteDialog
         )
     }
+
+    if (isBottomSheetVisible) {
+        FilterSortBottomSheet(
+            uiState = uiState,
+            onCategorySelected = viewModel::onCategoryFilterChanged,
+            onLocationSelected = viewModel::onLocationFilterChanged,
+            onExpirySelected = viewModel::onExpiryFilterChanged,
+            onSortSelected = viewModel::onSortOptionChanged,
+            onClearAll = viewModel::clearAllFilters,
+            onDismiss = { isBottomSheetVisible = false }
+        )
+    }
 }
 
 @Composable
@@ -288,80 +306,165 @@ private fun ExpiryDateText(item: ItemUiModel) {
 }
 
 @Composable
-private fun ItemSearchBar(
+private fun SearchBarWithFilterButton(
     query: String,
     onQueryChanged: (String) -> Unit,
     onClearClick: () -> Unit,
-    modifier: Modifier = Modifier
-) {
-    OutlinedTextField(
-        value = query,
-        onValueChange = onQueryChanged,
-        modifier = modifier
-            .fillMaxWidth()
-            .padding(horizontal = 16.dp, vertical = 8.dp),
-        placeholder = { Text("Suchen...") },
-        leadingIcon = {
-            Icon(Icons.Default.Search, contentDescription = "Suchen")
-        },
-        trailingIcon = {
-            if (query.isNotEmpty()) {
-                IconButton(onClick = onClearClick) {
-                    Icon(Icons.Default.Close, contentDescription = "Suche löschen")
-                }
-            }
-        },
-        singleLine = true
-    )
-}
-
-@Composable
-private fun FilterChipRow(
-    uiState: ItemListUiState,
-    onCategorySelected: (Int?) -> Unit,
-    onLocationSelected: (Int?) -> Unit,
-    onExpirySelected: (ExpiryFilter?) -> Unit,
+    activeFilterCount: Int,
+    onFilterClick: () -> Unit,
     modifier: Modifier = Modifier
 ) {
     Row(
         modifier = modifier
             .fillMaxWidth()
-            .horizontalScroll(rememberScrollState())
-            .padding(horizontal = 16.dp, vertical = 4.dp),
-        horizontalArrangement = Arrangement.spacedBy(8.dp)
+            .padding(start = 16.dp, end = 8.dp, top = 8.dp, bottom = 8.dp),
+        verticalAlignment = Alignment.CenterVertically
     ) {
-        FilterDropdownChip(
-            label = "Kategorie",
-            selectedLabel = uiState.availableCategories
-                .find { it.first == uiState.selectedCategoryId }?.second,
-            options = uiState.availableCategories,
-            onOptionSelected = { onCategorySelected(it) },
-            onClear = { onCategorySelected(null) }
-        )
-
-        FilterDropdownChip(
-            label = "Lagerort",
-            selectedLabel = uiState.availableLocations
-                .find { it.first == uiState.selectedLocationId }?.second,
-            options = uiState.availableLocations,
-            onOptionSelected = { onLocationSelected(it) },
-            onClear = { onLocationSelected(null) }
-        )
-
-        FilterDropdownChip(
-            label = "Ablauf",
-            selectedLabel = uiState.selectedExpiryFilter?.label,
-            options = ExpiryFilter.entries.map { it.ordinal to it.label },
-            onOptionSelected = { ordinal ->
-                onExpirySelected(ExpiryFilter.entries[ordinal])
+        OutlinedTextField(
+            value = query,
+            onValueChange = onQueryChanged,
+            modifier = Modifier.weight(1f),
+            placeholder = { Text("Suchen...") },
+            leadingIcon = {
+                Icon(Icons.Default.Search, contentDescription = "Suchen")
             },
-            onClear = { onExpirySelected(null) }
+            trailingIcon = {
+                if (query.isNotEmpty()) {
+                    IconButton(onClick = onClearClick) {
+                        Icon(Icons.Default.Close, contentDescription = "Suche löschen")
+                    }
+                }
+            },
+            singleLine = true
         )
+        Spacer(modifier = Modifier.width(4.dp))
+        BadgedBox(
+            badge = {
+                if (activeFilterCount > 0) {
+                    Badge { Text("$activeFilterCount") }
+                }
+            }
+        ) {
+            IconButton(onClick = onFilterClick) {
+                Icon(
+                    imageVector = Icons.Default.FilterList,
+                    contentDescription = "Filter & Sortierung"
+                )
+            }
+        }
     }
 }
 
+@OptIn(ExperimentalMaterial3Api::class)
 @Composable
-private fun FilterDropdownChip(
+private fun FilterSortBottomSheet(
+    uiState: ItemListUiState,
+    onCategorySelected: (Int?) -> Unit,
+    onLocationSelected: (Int?) -> Unit,
+    onExpirySelected: (ExpiryFilter?) -> Unit,
+    onSortSelected: (SortOption) -> Unit,
+    onClearAll: () -> Unit,
+    onDismiss: () -> Unit
+) {
+    val sheetState = rememberModalBottomSheetState(skipPartiallyExpanded = true)
+
+    ModalBottomSheet(
+        onDismissRequest = onDismiss,
+        sheetState = sheetState
+    ) {
+        Column(
+            modifier = Modifier
+                .fillMaxWidth()
+                .verticalScroll(rememberScrollState())
+                .padding(horizontal = 16.dp)
+                .padding(bottom = 32.dp)
+        ) {
+            Text(
+                text = "Filter",
+                style = MaterialTheme.typography.titleMedium,
+                modifier = Modifier.padding(bottom = 12.dp)
+            )
+
+            FilterDropdown(
+                label = "Kategorie",
+                selectedLabel = uiState.availableCategories
+                    .find { it.first == uiState.selectedCategoryId }?.second,
+                options = uiState.availableCategories,
+                onOptionSelected = { onCategorySelected(it) },
+                onClear = { onCategorySelected(null) }
+            )
+
+            Spacer(modifier = Modifier.height(8.dp))
+
+            FilterDropdown(
+                label = "Lagerort",
+                selectedLabel = uiState.availableLocations
+                    .find { it.first == uiState.selectedLocationId }?.second,
+                options = uiState.availableLocations,
+                onOptionSelected = { onLocationSelected(it) },
+                onClear = { onLocationSelected(null) }
+            )
+
+            Spacer(modifier = Modifier.height(8.dp))
+
+            FilterDropdown(
+                label = "Ablauf",
+                selectedLabel = uiState.selectedExpiryFilter?.label,
+                options = ExpiryFilter.entries.map { it.ordinal to it.label },
+                onOptionSelected = { ordinal ->
+                    onExpirySelected(ExpiryFilter.entries[ordinal])
+                },
+                onClear = { onExpirySelected(null) }
+            )
+
+            HorizontalDivider(modifier = Modifier.padding(vertical = 16.dp))
+
+            Text(
+                text = "Sortierung",
+                style = MaterialTheme.typography.titleMedium,
+                modifier = Modifier.padding(bottom = 8.dp)
+            )
+
+            SortOption.entries.forEach { option ->
+                Row(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .selectable(
+                            selected = uiState.selectedSortOption == option,
+                            onClick = { onSortSelected(option) },
+                            role = Role.RadioButton
+                        )
+                        .padding(vertical = 8.dp),
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    RadioButton(
+                        selected = uiState.selectedSortOption == option,
+                        onClick = null
+                    )
+                    Spacer(modifier = Modifier.width(12.dp))
+                    Text(
+                        text = option.label,
+                        style = MaterialTheme.typography.bodyLarge
+                    )
+                }
+            }
+
+            if (uiState.activeFilterSortCount > 0) {
+                Spacer(modifier = Modifier.height(16.dp))
+                TextButton(
+                    onClick = onClearAll,
+                    modifier = Modifier.fillMaxWidth()
+                ) {
+                    Text("Alle zurücksetzen")
+                }
+            }
+        }
+    }
+}
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+private fun FilterDropdown(
     label: String,
     selectedLabel: String?,
     options: List<Pair<Int, String>>,
@@ -369,36 +472,33 @@ private fun FilterDropdownChip(
     onClear: () -> Unit
 ) {
     var expanded by remember { mutableStateOf(false) }
-    val isSelected = selectedLabel != null
+    val displayValue = selectedLabel ?: "Alle"
 
-    Box {
-        FilterChip(
-            selected = isSelected,
-            onClick = { expanded = true },
-            label = {
-                Text(selectedLabel ?: label)
-            },
-            trailingIcon = {
-                Icon(
-                    imageVector = Icons.Default.ArrowDropDown,
-                    contentDescription = null,
-                    modifier = Modifier.size(18.dp)
-                )
-            }
+    ExposedDropdownMenuBox(
+        expanded = expanded,
+        onExpandedChange = { expanded = it }
+    ) {
+        OutlinedTextField(
+            value = displayValue,
+            onValueChange = {},
+            readOnly = true,
+            label = { Text(label) },
+            trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = expanded) },
+            modifier = Modifier
+                .fillMaxWidth()
+                .menuAnchor(MenuAnchorType.PrimaryNotEditable)
         )
-        DropdownMenu(
+        ExposedDropdownMenu(
             expanded = expanded,
             onDismissRequest = { expanded = false }
         ) {
-            if (isSelected) {
-                DropdownMenuItem(
-                    text = { Text("Alle") },
-                    onClick = {
-                        expanded = false
-                        onClear()
-                    }
-                )
-            }
+            DropdownMenuItem(
+                text = { Text("Alle") },
+                onClick = {
+                    expanded = false
+                    onClear()
+                }
+            )
             options.forEach { (id, name) ->
                 DropdownMenuItem(
                     text = { Text(name) },

app/src/main/java/de/bollwerk/app/ui/item/ItemListViewModel.kt

@@ -22,11 +22,21 @@ internal enum class ExpiryFilter(val label: String) {
     OK("OK")
 }
 
+internal enum class SortOption(val label: String) {
+    NAME_ASC("Name (A–Z)"),
+    NAME_DESC("Name (Z–A)"),
+    EXPIRY_ASC("Ablauf (nächstes zuerst)"),
+    EXPIRY_DESC("Ablauf (spätestes zuerst)"),
+    QUANTITY_ASC("Menge (aufsteigend)"),
+    QUANTITY_DESC("Menge (absteigend)")
+}
+
 private data class FilterState(
     val searchQuery: String = "",
     val categoryId: Int? = null,
     val locationId: Int? = null,
-    val expiryFilter: ExpiryFilter? = null
+    val expiryFilter: ExpiryFilter? = null,
+    val sortOption: SortOption = SortOption.NAME_ASC
 )
 
 internal data class ItemListUiState(
@@ -36,6 +46,7 @@ internal data class ItemListUiState(
     val selectedCategoryId: Int? = null,
     val selectedLocationId: Int? = null,
     val selectedExpiryFilter: ExpiryFilter? = null,
+    val selectedSortOption: SortOption = SortOption.NAME_ASC,
     val availableCategories: List<Pair<Int, String>> = emptyList(),
     val availableLocations: List<Pair<Int, String>> = emptyList(),
     val isDeleteDialogVisible: Boolean = false,
@@ -49,6 +60,9 @@ internal data class ItemListUiState(
             selectedExpiryFilter != null
     val hasNoFilterResults: Boolean
         get() = isFiltering && groupedItems.isEmpty() && !isEmpty
+    val activeFilterSortCount: Int
+        get() = listOfNotNull(selectedCategoryId, selectedLocationId, selectedExpiryFilter).size +
+            if (selectedSortOption != SortOption.NAME_ASC) 1 else 0
 }
 
 @HiltViewModel
@@ -114,7 +128,16 @@ internal class ItemListViewModel @Inject constructor(
                         }
                     }
 
-                val grouped = filteredItems
+                val sortedItems = when (filters.sortOption) {
+                    SortOption.NAME_ASC -> filteredItems.sortedBy { it.name.lowercase() }
+                    SortOption.NAME_DESC -> filteredItems.sortedByDescending { it.name.lowercase() }
+                    SortOption.EXPIRY_ASC -> filteredItems.sortedWith(compareBy(nullsLast()) { it.expiryDate })
+                    SortOption.EXPIRY_DESC -> filteredItems.sortedWith(compareByDescending(nullsFirst()) { it.expiryDate })
+                    SortOption.QUANTITY_ASC -> filteredItems.sortedBy { it.quantity }
+                    SortOption.QUANTITY_DESC -> filteredItems.sortedByDescending { it.quantity }
+                }
+
+                val grouped = sortedItems
                     .groupBy { it.categoryName }
                     .toSortedMap()
 
@@ -125,6 +148,7 @@ internal class ItemListViewModel @Inject constructor(
                     selectedCategoryId = filters.categoryId,
                     selectedLocationId = filters.locationId,
                     selectedExpiryFilter = filters.expiryFilter,
+                    selectedSortOption = filters.sortOption,
                     availableCategories = categories.map { it.id to it.name }
                         .sortedBy { it.second },
                     availableLocations = locations.map { it.id to it.name }
@@ -157,6 +181,21 @@ internal class ItemListViewModel @Inject constructor(
         _filterState.update { it.copy(expiryFilter = expiryFilter) }
     }
 
+    fun onSortOptionChanged(sortOption: SortOption) {
+        _filterState.update { it.copy(sortOption = sortOption) }
+    }
+
+    fun clearAllFilters() {
+        _filterState.update {
+            it.copy(
+                categoryId = null,
+                locationId = null,
+                expiryFilter = null,
+                sortOption = SortOption.NAME_ASC
+            )
+        }
+    }
+
     fun clearSearch() {
         _filterState.update { it.copy(searchQuery = "") }
     }