refactor: kcal/100g -> kcal/kg umbenennen und Mindestbestand entfernen

- ItemEntity, ItemDto: kcalPer100g -> kcalPerKg (kcal_per_kg),
  minStock-Spalte komplett entfernt
- CalculateSupplyRangeUseCase: Formel angepasst (/ 1000.0 * kcalPerKg)
- GetMinStockWarningsUseCase + MinStockWarning: gelöscht
- UI (ItemFormScreen, WarningsScreen, DashboardScreen): Mindestbestand-
  Felder und Warnungsabschnitte entfernt
- ViewModels, UiState, Repository: alle Referenzen bereinigt
- Server (Tables, InventoryRepository): Schema angepasst
- Room: fallbackToDestructiveMigration() hinzugefügt (keine Produktivdaten)
- Alle 434 Tests gruen

Anforderungen/design/server-tech/candidates.md

@@ -0,0 +1,125 @@
+# Technology Candidates – REST-Server für Geräte-Synchronisierung (Phase 2)
+
+Date: 2026-05-14
+Requirements file: requirements.md
+
+---
+
+## Candidate Table
+
+| Name              | Description                                         | Use case                                     | Age              | Adoption                    | Last release  | Update cadence | Req. coverage            | Score |
+| ----------------- | --------------------------------------------------- | -------------------------------------------- | ---------------- | --------------------------- | ------------- | -------------- | ------------------------ | ----- |
+| Ktor              | Kotlin-nativer async Web-Framework von JetBrains    | Microservices, APIs, leichtgewichtige Server | ~8 Jahre (2018)  | Moderate (JetBrains-backed) | 2025 (3.x)    | Monatlich      | Alle Must + alle Should  | **9** |
+| Spring Boot       | Enterprise-Java/Kotlin-Framework, Industriestandard | Enterprise-Apps, REST-APIs, Microservices    | ~12 Jahre (2014) | Widespread                  | 2025 (3.x)    | Monatlich      | Alle Must, teilw. Should | **6** |
+| Node.js + Express | JavaScript-Runtime + minimalistisches Web-Framework | APIs, Prototyping, Full-Stack JS             | ~15 Jahre (2010) | Widespread                  | 2025 (5.x)    | Regelmäßig     | Alle Must, wenig Should  | **5** |
+| Python + FastAPI  | Modernes Python-Web-Framework mit Type Hints        | Schnelle API-Entwicklung, ML-Backends        | ~7 Jahre (2018)  | Widespread                  | 2025 (0.115+) | Monatlich      | Alle Must, wenig Should  | **5** |
+
+---
+
+## Candidate Details
+
+### 1. Ktor (JetBrains)
+
+**Homepage:** https://ktor.io
+**Repository:** https://github.com/ktorio/ktor
+
+**Requirement coverage:**
+
+- ✅ Must: REST-API (JSON), einfaches Deployment (Fat JAR / Docker), CRUD-Unterstützung, JSON via kotlinx.serialization nativ, aktiv gewartet (JetBrains), sehr geringer Ressourcenverbrauch
+- ✅ Should: **Kotlin-nativ** – gleiche Sprache wie Client, Datenmodelle direkt teilbar, kotlinx.serialization als First-Class-Citizen, Coroutines-basiert, kein Application-Server nötig (eingebetteter Netty/CIO), exzellente Dokumentation (ktor.io), einfache DB-Anbindung (Exposed ORM), einfaches Testing
+- ✅ Nice-to-Have: WebSocket-Support eingebaut, Authentifizierungs-Plugins, Docker-ready (Fat JAR), OpenAPI-Plugin verfügbar, Hot-Reload via Auto-Reload-Feature, Type-safe Routing
+
+**Stärken:**
+
+- **Gleiche Sprache wie der Client** – Datenmodelle (`@Serializable`-Klassen) können in einem Shared-Modul zwischen Server und Client geteilt werden
+- Koroutinen-basiert – konsistent mit dem Android-Client
+- Sehr leichtgewichtig – Start in < 1 Sekunde, wenig RAM
+- JetBrains-maintained – langfristige Pflege gesichert
+- Modulares Plugin-System – nur einbinden was man braucht
+
+**Risiken / Schwächen:**
+
+- Kleinere Community als Spring Boot – weniger StackOverflow-Antworten
+- Weniger Enterprise-Features out of the box (kein Spring-Ökosystem)
+- Bei komplexen Anforderungen muss man mehr selbst bauen
+
+---
+
+### 2. Spring Boot
+
+**Homepage:** https://spring.io/projects/spring-boot
+**Repository:** https://github.com/spring-projects/spring-boot
+
+**Requirement coverage:**
+
+- ✅ Must: REST-API, Deployment, CRUD, JSON, aktiv gewartet, stabil
+- ⚠️ Should: Kotlin-Support vorhanden aber nicht nativ (Java-First), kotlinx.serialization nicht Standard (Jackson wird bevorzugt), schwergewichtig (Tomcat eingebettet, hoher RAM-Verbrauch), Coroutines-Support nur via WebFlux
+- ✅ Nice-to-Have: WebSocket, Spring Security, Docker, Swagger/OpenAPI, DevTools Hot-Reload
+
+**Stärken:**
+
+- Industriestandard mit riesiger Community und Ökosystem
+- Extrem viele Tutorials, Bücher, StackOverflow-Antworten
+- Battle-tested in Produktion bei Millionen von Projekten
+- Spring Security für Authentication/Authorization
+
+**Risiken / Schwächen:**
+
+- **Overhead für ein kleines Projekt:** Hoher RAM-Verbrauch (200–500 MB), langsame Startzeit, viel Boilerplate
+- **Java-First:** Kotlin ist Second-Class-Citizen – Spring-Idiome (Annotations, Bean-Wiring) fühlen sich in Kotlin weniger natürlich an
+- **Keine geteilten Datenmodelle:** kotlinx.serialization wird nicht nativ unterstützt, Jackson-Annotationen nötig – das Client-Datenmodell kann nicht 1:1 wiederverwendet werden
+- Für 2–10 Nutzer massiv überdimensioniert
+
+---
+
+### 3. Node.js + Express
+
+**Homepage:** https://expressjs.com
+**Repository:** https://github.com/expressjs/express
+
+**Requirement coverage:**
+
+- ✅ Must: REST-API, einfaches Deployment, CRUD, JSON nativ, aktiv gewartet, geringer Verbrauch
+- ❌ Should: **Andere Sprache (JavaScript/TypeScript)** – keine Wiederverwendung von Kotlin-Datenmodellen, keine Coroutines, kein kotlinx.serialization, andere Toolchain (npm vs. Gradle)
+- ⚠️ Nice-to-Have: WebSocket (via ws/socket.io), Passport.js für Auth, Docker einfach, OpenAPI-Generierung möglich
+
+**Stärken:**
+
+- Extrem leichtgewichtig und schnell aufzusetzen
+- Riesige Community, npm-Ökosystem
+- Sehr gute Performance für I/O-lastige Workloads
+- Viele fertige Middleware-Pakete
+
+**Risiken / Schwächen:**
+
+- **Sprachwechsel:** Kotlin (Client) ↔ JavaScript (Server) – kein Code-Sharing, doppelte Modell-Definition
+- **Typsicherheit:** JavaScript bietet weniger Typsicherheit als Kotlin (TypeScript hilft, ist aber ein separates Ökosystem)
+- **Dependency-Overhead:** npm-Ökosystem hat bekannte Supply-Chain-Risiken
+- Separates Tooling und Build-System nötig
+
+---
+
+### 4. Python + FastAPI
+
+**Homepage:** https://fastapi.tiangolo.com
+**Repository:** https://github.com/tiangolo/fastapi
+
+**Requirement coverage:**
+
+- ✅ Must: REST-API, einfaches Deployment, CRUD, JSON, aktiv gewartet, geringer Verbrauch
+- ❌ Should: **Andere Sprache (Python)** – keine Wiederverwendung von Kotlin-Datenmodellen, kein kotlinx.serialization, andere Toolchain (pip vs. Gradle), kein Coroutines-Bezug
+- ✅ Nice-to-Have: WebSocket-Support, OAuth2-Support, Docker einfach, **automatische OpenAPI/Swagger-Generierung** (Highlight!), Hot-Reload via uvicorn
+
+**Stärken:**
+
+- Extrem schnelle Entwicklung dank Auto-Dokumentation und Type Hints
+- Automatische OpenAPI-Doku out of the box
+- Async I/O via asyncio
+- Gut für Prototyping
+
+**Risiken / Schwächen:**
+
+- **Sprachwechsel:** Kotlin ↔ Python – komplett andere Toolchain, kein Code-Sharing
+- **GIL:** Python Global Interpreter Lock kann bei CPU-intensiven Operationen limitieren (hier aber irrelevant)
+- **Deployment:** Python-Umgebungen können fragiler sein als JVM-Fat-JARs (venv, pip-Abhängigkeiten)
+- Weniger natürliche Integration mit dem Kotlin/Gradle-basierten Projekt

Anforderungen/design/server-tech/requirements.md

@@ -0,0 +1,60 @@
+# Technology Requirements – REST-Server für Geräte-Synchronisierung (Phase 2)
+
+Date: 2026-05-14
+Issue: #10
+Author: Tech-Decision Workflow
+
+---
+
+## Kontext
+
+Die Krisenvorrat-App (Android/Kotlin) speichert in v1.0 alle Daten lokal (Room/SQLite). In Phase 2 soll ein REST-Server hinzukommen, der die Synchronisierung und das Sharing des Inventars zwischen mehreren Geräten ermöglicht.
+
+**Einsatzszenario:**
+
+- Privater Gebrauch, kein kommerzieller Betrieb
+- Wenige Geräte (2–10), keine hohe Last
+- Während Entwicklung: Server lokal auf Laptop, Testgerät im LAN
+- Später: kleiner Server im Internet (VPS / Homeserver)
+- Datenformat: JSON (kotlinx.serialization, bereits im Client definiert)
+
+**Vom Issue genannte Optionen:** Ktor, Spring Boot, Node.js/Express, Python/FastAPI
+
+---
+
+## Must-Have (Eliminatoren)
+
+- REST-API bereitstellen (JSON Request/Response)
+- Einfaches Deployment auf einem kleinen Linux-VPS oder Homeserver
+- Unterstützung für grundlegende CRUD-Operationen (Inventar-Items, Kategorien, Lagerorte)
+- JSON als primäres Datenformat (kompatibel mit dem bestehenden Client-Datenmodell)
+- Aktiv gewartet, stabile Release-Versionen verfügbar
+- Geringe Betriebskosten (wenig RAM/CPU-Verbrauch für wenige Nutzer)
+
+## Should-Have (gewichtete Pluspunkte)
+
+- **Kotlin-Kompatibilität:** Gleiche Sprache wie der Android-Client (Wiederverwendung von Datenmodellen, kotlinx.serialization)
+- Einfache Einrichtung und geringer Boilerplate
+- Integrierte Unterstützung für Coroutines / async I/O
+- Leichtgewichtig (kein Application-Server wie Tomcat nötig)
+- Gute Dokumentation und Lernressourcen
+- Einfache Datenbankanbindung (SQLite oder PostgreSQL)
+- Einfaches Testen (Unit- und Integrationstests)
+
+## Nice-to-Have (Bonus)
+
+- WebSocket-Unterstützung (für Echtzeit-Sync in einer späteren Phase)
+- Eingebaute Authentifizierung / Sicherheitsmechanismen
+- Docker-Image oder einfache Containerisierung
+- OpenAPI / Swagger-Generierung
+- Hot-Reload / schnelle Entwicklungszyklen
+- Type-safe Routing
+
+## Constraints
+
+- **Zielplattform Server:** Linux (VPS / Homeserver), optional auch Windows/macOS für lokale Entwicklung
+- **Client-Sprache:** Kotlin (Android) – geteilte Modelle sind ein großer Vorteil
+- **Serialisierung:** kotlinx.serialization (bereits im Client im Einsatz)
+- **Lizenz:** Open Source (MIT, Apache 2.0 o.ä.)
+- **Skalierung:** Nicht relevant – max. 10 gleichzeitige Nutzer
+- **Budget:** Kein Budget für kommerzielle Lizenzen oder teure Hosting-Lösungen

app/src/main/java/de/krisenvorrat/app/data/db/entity/ItemEntity.kt

@@ -32,10 +32,9 @@ internal data class ItemEntity(
     @ColumnInfo(name = "quantity") val quantity: Double,
     @ColumnInfo(name = "unit") val unit: String,
     @ColumnInfo(name = "unit_price") val unitPrice: Double,
-    @ColumnInfo(name = "kcal_per_100g") val kcalPer100g: Int?,
+    @ColumnInfo(name = "kcal_per_kg") val kcalPerKg: Int?,
     @ColumnInfo(name = "expiry_date") val expiryDate: LocalDate?,
     @ColumnInfo(name = "location_id") val locationId: Int,
-    @ColumnInfo(name = "min_stock") val minStock: Double,
     @ColumnInfo(name = "notes") val notes: String,
     @ColumnInfo(name = "last_updated") val lastUpdated: Long
 )

app/src/main/java/de/krisenvorrat/app/data/export/ImportExportRepositoryImpl.kt

@@ -64,10 +64,9 @@ internal class ImportExportRepositoryImpl @Inject constructor(
                     quantity = item.quantity,
                     unit = item.unit,
                     unitPrice = item.unitPrice,
-                    kcalPer100g = item.kcalPer100g,
+                    kcalPerKg = item.kcalPerKg,
                     expiryDate = item.expiryDate?.toString(),
                     locationId = item.locationId,
-                    minStock = item.minStock,
                     notes = item.notes,
                     lastUpdated = item.lastUpdated
                 )
@@ -102,10 +101,9 @@ internal class ImportExportRepositoryImpl @Inject constructor(
                     quantity = item.quantity,
                     unit = item.unit,
                     unitPrice = item.unitPrice,
-                    kcalPer100g = item.kcalPer100g,
+                    kcalPerKg = item.kcalPerKg,
                     expiryDate = item.expiryDate?.let { LocalDate.parse(it) },
                     locationId = item.locationId,
-                    minStock = item.minStock,
                     notes = item.notes,
                     lastUpdated = item.lastUpdated
                 )

app/src/main/java/de/krisenvorrat/app/di/DatabaseModule.kt

@@ -27,6 +27,7 @@ internal object DatabaseModule {
     fun provideDatabase(@ApplicationContext context: Context): KrisenvorratDatabase =
         Room.databaseBuilder(context, KrisenvorratDatabase::class.java, "krisenvorrat.db")
             .addCallback(DefaultDataCallback)
+            .fallbackToDestructiveMigration()
             .build()
 
     private object DefaultDataCallback : RoomDatabase.Callback() {

app/src/main/java/de/krisenvorrat/app/domain/model/MinStockWarning.kt

@@ -1,8 +0,0 @@
-package de.krisenvorrat.app.domain.model
-
-import de.krisenvorrat.app.data.db.entity.ItemEntity
-
-internal data class MinStockWarning(
-    val item: ItemEntity,
-    val deficit: Double
-)

app/src/main/java/de/krisenvorrat/app/domain/usecase/CalculateSupplyRangeUseCase.kt

@@ -19,9 +19,9 @@ internal class CalculateSupplyRangeUseCase @Inject constructor() {
         if (dailyNeed <= 0) return 0.0
 
         val totalKcal = items.sumOf { item ->
-            val kcalPer100g = item.kcalPer100g ?: return@sumOf 0.0
+            val kcalPerKg = item.kcalPerKg ?: return@sumOf 0.0
             val grams = convertToGrams(item.quantity, item.unit) ?: return@sumOf 0.0
-            (grams / 100.0) * kcalPer100g
+            (grams / 1000.0) * kcalPerKg
         }
 
         return totalKcal / dailyNeed

app/src/main/java/de/krisenvorrat/app/domain/usecase/GetMinStockWarningsUseCase.kt

@@ -1,20 +0,0 @@
-package de.krisenvorrat.app.domain.usecase
-
-import de.krisenvorrat.app.data.db.entity.ItemEntity
-import de.krisenvorrat.app.domain.model.MinStockWarning
-import javax.inject.Inject
-
-internal class GetMinStockWarningsUseCase @Inject constructor() {
-
-    operator fun invoke(items: List<ItemEntity>): List<MinStockWarning> {
-        return items
-            .filter { it.quantity < it.minStock }
-            .map { item ->
-                MinStockWarning(
-                    item = item,
-                    deficit = item.minStock - item.quantity
-                )
-            }
-            .sortedByDescending { it.deficit }
-    }
-}

app/src/main/java/de/krisenvorrat/app/ui/dashboard/DashboardScreen.kt

@@ -60,11 +60,10 @@ internal fun DashboardScreen(
 
                 item { SupplyRangeCard(supplyRangeDays = uiState.supplyRangeDays) }
 
-                if (uiState.hasExpiryWarnings || uiState.hasMinStockWarnings) {
+                if (uiState.hasExpiryWarnings) {
                     item {
                         WarningsSummaryCard(
-                            expiryCount = uiState.expiryWarnings.size,
+                            expiryCount = uiState.expiryWarnings.size
-                            minStockCount = uiState.minStockWarnings.size
                         )
                     }
                 }
@@ -176,8 +175,8 @@ private fun SupplyRangeCard(supplyRangeDays: Double) {
 }
 
 @Composable
-private fun WarningsSummaryCard(expiryCount: Int, minStockCount: Int) {
+private fun WarningsSummaryCard(expiryCount: Int) {
-    val totalCount = expiryCount + minStockCount
+    val totalCount = expiryCount
     Card(
         modifier = Modifier.fillMaxWidth(),
         colors = CardDefaults.cardColors(
@@ -198,13 +197,6 @@ private fun WarningsSummaryCard(expiryCount: Int, minStockCount: Int) {
                     color = MaterialTheme.colorScheme.onErrorContainer
                 )
             }
-            if (minStockCount > 0) {
-                Text(
-                    text = "$minStockCount Mindestbestand-Warnungen",
-                    style = MaterialTheme.typography.bodyMedium,
-                    color = MaterialTheme.colorScheme.onErrorContainer
-                )
-            }
         }
     }
 }

app/src/main/java/de/krisenvorrat/app/ui/dashboard/DashboardUiState.kt

@@ -2,14 +2,12 @@ package de.krisenvorrat.app.ui.dashboard
 
 import de.krisenvorrat.app.domain.model.CategorySummary
 import de.krisenvorrat.app.domain.model.ExpiryWarning
-import de.krisenvorrat.app.domain.model.MinStockWarning
 
 internal data class DashboardUiState(
     val categorySummaries: List<CategorySummary> = emptyList(),
     val totalValue: Double = 0.0,
     val supplyRangeDays: Double = 0.0,
     val expiryWarnings: List<ExpiryWarning> = emptyList(),
-    val minStockWarnings: List<MinStockWarning> = emptyList(),
     val isLoading: Boolean = true
 ) {
     val totalItemCount: Int
@@ -17,7 +15,4 @@ internal data class DashboardUiState(
 
     val hasExpiryWarnings: Boolean
         get() = expiryWarnings.isNotEmpty()
-
-    val hasMinStockWarnings: Boolean
-        get() = minStockWarnings.isNotEmpty()
 }

app/src/main/java/de/krisenvorrat/app/ui/dashboard/DashboardViewModel.kt

@@ -12,7 +12,6 @@ import de.krisenvorrat.app.domain.usecase.CalculateCategorySummaryUseCase
 import de.krisenvorrat.app.domain.usecase.CalculateSupplyRangeUseCase
 import de.krisenvorrat.app.domain.usecase.CalculateTotalValueUseCase
 import de.krisenvorrat.app.domain.usecase.GetExpiryWarningsUseCase
-import de.krisenvorrat.app.domain.usecase.GetMinStockWarningsUseCase
 import de.krisenvorrat.app.domain.repository.CategoryRepository
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.asStateFlow
@@ -30,8 +29,7 @@ internal class DashboardViewModel @Inject constructor(
     private val calculateCategorySummary: CalculateCategorySummaryUseCase,
     private val calculateTotalValue: CalculateTotalValueUseCase,
     private val calculateSupplyRange: CalculateSupplyRangeUseCase,
-    private val getExpiryWarnings: GetExpiryWarningsUseCase,
+    private val getExpiryWarnings: GetExpiryWarningsUseCase
-    private val getMinStockWarnings: GetMinStockWarningsUseCase
 ) : ViewModel() {
 
     private val _uiState = MutableStateFlow(DashboardUiState())
@@ -54,7 +52,6 @@ internal class DashboardViewModel @Inject constructor(
                     totalValue = calculateTotalValue(items),
                     supplyRangeDays = calculateSupplyRange(items, totalDailyKcal),
                     expiryWarnings = getExpiryWarnings(items),
-                    minStockWarnings = getMinStockWarnings(items),
                     isLoading = false
                 )
             }.collect { state ->

app/src/main/java/de/krisenvorrat/app/ui/item/ItemFormScreen.kt

@@ -177,11 +177,11 @@ internal fun ItemFormScreen(
 
             Spacer(modifier = Modifier.height(8.dp))
 
-            // kcal/100g
+            // kcal/kg
             OutlinedTextField(
-                value = uiState.kcalPer100g,
+                value = uiState.kcalPerKg,
-                onValueChange = viewModel::updateKcalPer100g,
+                onValueChange = viewModel::updateKcalPerKg,
-                label = { Text("kcal / 100g") },
+                label = { Text("kcal / kg") },
                 keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Number),
                 singleLine = true,
                 modifier = Modifier.fillMaxWidth()
@@ -189,18 +189,6 @@ internal fun ItemFormScreen(
 
             Spacer(modifier = Modifier.height(8.dp))
 
-            // Mindestbestand
-            OutlinedTextField(
-                value = uiState.minStock,
-                onValueChange = viewModel::updateMinStock,
-                label = { Text("Mindestbestand") },
-                keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Decimal),
-                singleLine = true,
-                modifier = Modifier.fillMaxWidth()
-            )
-
-            Spacer(modifier = Modifier.height(8.dp))
-
             // Notizen
             OutlinedTextField(
                 value = uiState.notes,

app/src/main/java/de/krisenvorrat/app/ui/item/ItemFormViewModel.kt

@@ -27,10 +27,9 @@ internal data class ItemFormUiState(
     val quantity: String = "",
     val unit: String = "",
     val unitPrice: String = "",
-    val kcalPer100g: String = "",
+    val kcalPerKg: String = "",
     val expiryDate: LocalDate? = null,
     val locationId: Int? = null,
-    val minStock: String = "",
     val notes: String = "",
     val categories: List<CategoryEntity> = emptyList(),
     val locations: List<LocationEntity> = emptyList(),
@@ -109,10 +108,9 @@ internal class ItemFormViewModel @Inject constructor(
                             quantity = item.quantity.toBigDecimal().stripTrailingZeros().toPlainString(),
                             unit = item.unit,
                             unitPrice = item.unitPrice.toBigDecimal().stripTrailingZeros().toPlainString(),
-                            kcalPer100g = item.kcalPer100g?.toString() ?: "",
+                            kcalPerKg = item.kcalPerKg?.toString() ?: "",
                             expiryDate = item.expiryDate,
                             locationId = item.locationId,
-                            minStock = item.minStock.toBigDecimal().stripTrailingZeros().toPlainString(),
                             notes = item.notes,
                             isLoading = false
                         )
@@ -146,8 +144,8 @@ internal class ItemFormViewModel @Inject constructor(
         _uiState.update { it.copy(unitPrice = value) }
     }
 
-    fun updateKcalPer100g(value: String) {
+    fun updateKcalPerKg(value: String) {
-        _uiState.update { it.copy(kcalPer100g = value) }
+        _uiState.update { it.copy(kcalPerKg = value) }
     }
 
     fun updateExpiryDate(value: LocalDate?) {
@@ -158,10 +156,6 @@ internal class ItemFormViewModel @Inject constructor(
         _uiState.update { it.copy(locationId = value, validationErrors = it.validationErrors - "locationId") }
     }
 
-    fun updateMinStock(value: String) {
-        _uiState.update { it.copy(minStock = value) }
-    }
-
     fun updateNotes(value: String) {
         _uiState.update { it.copy(notes = value) }
     }
@@ -183,10 +177,9 @@ internal class ItemFormViewModel @Inject constructor(
             quantity = state.quantity.toDouble(),
             unit = state.unit.trim(),
             unitPrice = state.unitPrice.toDoubleOrNull() ?: 0.0,
-            kcalPer100g = state.kcalPer100g.toIntOrNull(),
+            kcalPerKg = state.kcalPerKg.toIntOrNull(),
             expiryDate = state.expiryDate,
             locationId = state.locationId!!,
-            minStock = state.minStock.toDoubleOrNull() ?: 0.0,
             notes = state.notes.trim(),
             lastUpdated = System.currentTimeMillis()
         )

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

@@ -82,10 +82,9 @@ internal class ItemListViewModel @Inject constructor(
                         quantity = item.quantity,
                         unit = item.unit,
                         unitPrice = 0.0,
-                        kcalPer100g = null,
+                        kcalPerKg = null,
                         expiryDate = item.expiryDate,
                         locationId = 0,
-                        minStock = 0.0,
                         notes = "",
                         lastUpdated = 0L
                     )

app/src/main/java/de/krisenvorrat/app/ui/warnings/WarningsScreen.kt

@@ -29,7 +29,6 @@ import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import de.krisenvorrat.app.domain.model.ExpiryUrgency
 import de.krisenvorrat.app.domain.model.ExpiryWarning
-import de.krisenvorrat.app.domain.model.MinStockWarning
 import java.util.Locale
 
 @OptIn(ExperimentalMaterial3Api::class)
@@ -84,19 +83,6 @@ internal fun WarningsScreen(
                     }
                 }
 
-                if (uiState.hasMinStockWarnings) {
-                    item {
-                        Text(
-                            text = "Mindestbestand unterschritten (${uiState.minStockWarnings.size})",
-                            style = MaterialTheme.typography.titleMedium,
-                            modifier = Modifier.padding(top = 4.dp)
-                        )
-                    }
-                    items(uiState.minStockWarnings) { warning ->
-                        MinStockWarningItem(warning)
-                    }
-                }
-
                 item { Spacer(modifier = Modifier.height(8.dp)) }
             }
         }
@@ -145,32 +131,4 @@ private fun ExpiryWarningItem(warning: ExpiryWarning) {
     }
 }
 
-@Composable
+
-private fun MinStockWarningItem(warning: MinStockWarning) {
-    Card(
-        modifier = Modifier.fillMaxWidth(),
-        colors = CardDefaults.cardColors(
-            containerColor = MaterialTheme.colorScheme.errorContainer
-        )
-    ) {
-        Row(
-            modifier = Modifier
-                .fillMaxWidth()
-                .padding(16.dp),
-            horizontalArrangement = Arrangement.SpaceBetween,
-            verticalAlignment = Alignment.CenterVertically
-        ) {
-            Text(
-                text = warning.item.name,
-                style = MaterialTheme.typography.bodyMedium,
-                color = MaterialTheme.colorScheme.onErrorContainer
-            )
-            Text(
-                text = "fehlen: ${String.format(Locale.GERMANY, "%.1f", warning.deficit)} ${warning.item.unit}",
-                style = MaterialTheme.typography.bodyMedium,
-                fontWeight = FontWeight.Bold,
-                color = MaterialTheme.colorScheme.error
-            )
-        }
-    }
-}

app/src/main/java/de/krisenvorrat/app/ui/warnings/WarningsUiState.kt

@@ -1,22 +1,17 @@
 package de.krisenvorrat.app.ui.warnings
 
 import de.krisenvorrat.app.domain.model.ExpiryWarning
-import de.krisenvorrat.app.domain.model.MinStockWarning
 
 internal data class WarningsUiState(
     val expiryWarnings: List<ExpiryWarning> = emptyList(),
-    val minStockWarnings: List<MinStockWarning> = emptyList(),
     val isLoading: Boolean = true
 ) {
     val hasExpiryWarnings: Boolean
         get() = expiryWarnings.isNotEmpty()
 
-    val hasMinStockWarnings: Boolean
-        get() = minStockWarnings.isNotEmpty()
-
     val totalWarningCount: Int
-        get() = expiryWarnings.size + minStockWarnings.size
+        get() = expiryWarnings.size
 
     val hasWarnings: Boolean
-        get() = hasExpiryWarnings || hasMinStockWarnings
+        get() = hasExpiryWarnings
 }

app/src/main/java/de/krisenvorrat/app/ui/warnings/WarningsViewModel.kt

@@ -5,7 +5,6 @@ import androidx.lifecycle.viewModelScope
 import dagger.hilt.android.lifecycle.HiltViewModel
 import de.krisenvorrat.app.domain.repository.ItemRepository
 import de.krisenvorrat.app.domain.usecase.GetExpiryWarningsUseCase
-import de.krisenvorrat.app.domain.usecase.GetMinStockWarningsUseCase
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.asStateFlow
@@ -16,8 +15,7 @@ import javax.inject.Inject
 @HiltViewModel
 internal class WarningsViewModel @Inject constructor(
     private val itemRepository: ItemRepository,
-    private val getExpiryWarnings: GetExpiryWarningsUseCase,
+    private val getExpiryWarnings: GetExpiryWarningsUseCase
-    private val getMinStockWarnings: GetMinStockWarningsUseCase
 ) : ViewModel() {
 
     private val _uiState = MutableStateFlow(WarningsUiState())
@@ -29,7 +27,6 @@ internal class WarningsViewModel @Inject constructor(
                 _uiState.update {
                     WarningsUiState(
                         expiryWarnings = getExpiryWarnings(items),
-                        minStockWarnings = getMinStockWarnings(items),
                         isLoading = false
                     )
                 }

app/src/test/java/de/krisenvorrat/app/data/export/ImportExportRepositoryImplTest.kt

@@ -68,7 +68,7 @@ class ImportExportRepositoryImplTest {
     @Test
     fun test_importFromJson_withValidJson_upsertAllEntities() = runBlocking {
         // Given
-        val validJson = """{"version":1,"categories":[{"id":1,"name":"Lebensmittel"}],"locations":[{"id":1,"name":"Keller"}],"items":[{"id":"item1","name":"Konserve","categoryId":1,"quantity":2.0,"unit":"Stk","unitPrice":1.5,"kcalPer100g":null,"expiryDate":null,"locationId":1,"minStock":1.0,"notes":"","lastUpdated":0}],"settings":[{"key":"theme","value":"dark"}]}"""
+        val validJson = """{"version":1,"categories":[{"id":1,"name":"Lebensmittel"}],"locations":[{"id":1,"name":"Keller"}],"items":[{"id":"item1","name":"Konserve","categoryId":1,"quantity":2.0,"unit":"Stk","unitPrice":1.5,"kcalPerKg":null,"expiryDate":null,"locationId":1,"notes":"","lastUpdated":0}],"settings":[{"key":"theme","value":"dark"}]}"""
         val categoryDao = FakeCategoryDao()
         val locationDao = FakeLocationDao()
         val itemDao = FakeItemDao()

app/src/test/java/de/krisenvorrat/app/data/export/JsonRoundtripTest.kt

@@ -44,10 +44,9 @@ class JsonRoundtripTest {
                 quantity = 10.0,
                 unit = "Stk",
                 unitPrice = 2.49,
-                kcalPer100g = 180,
+                kcalPerKg = 180,
                 expiryDate = LocalDate.of(2027, 6, 15),
                 locationId = 1,
-                minStock = 5.0,
                 notes = "Ravioli",
                 lastUpdated = 1700000000L
             ),
@@ -58,10 +57,9 @@ class JsonRoundtripTest {
                 quantity = 3.0,
                 unit = "Stk",
                 unitPrice = 0.99,
-                kcalPer100g = null,
+                kcalPerKg = null,
                 expiryDate = null,
                 locationId = 2,
-                minStock = 1.0,
                 notes = "",
                 lastUpdated = 1700000001L
             )
@@ -121,10 +119,9 @@ class JsonRoundtripTest {
             assertEquals(original.quantity, imported?.quantity)
             assertEquals(original.unit, imported?.unit)
             assertEquals(original.unitPrice, imported?.unitPrice)
-            assertEquals(original.kcalPer100g, imported?.kcalPer100g)
+            assertEquals(original.kcalPerKg, imported?.kcalPerKg)
             assertEquals(original.expiryDate, imported?.expiryDate)
             assertEquals(original.locationId, imported?.locationId)
-            assertEquals(original.minStock, imported?.minStock)
             assertEquals(original.notes, imported?.notes)
             assertEquals(original.lastUpdated, imported?.lastUpdated)
         }
@@ -154,10 +151,9 @@ class JsonRoundtripTest {
                 quantity = 1.0,
                 unit = "Stk",
                 unitPrice = 0.0,
-                kcalPer100g = null,
+                kcalPerKg = null,
                 expiryDate = null,
                 locationId = 1,
-                minStock = 0.0,
                 notes = "",
                 lastUpdated = 0L
             )
@@ -176,7 +172,7 @@ class JsonRoundtripTest {
         // Then
         assertTrue(result.isSuccess)
         val imported = importItemDao.getItems().first()
-        assertEquals(null, imported.kcalPer100g)
+        assertEquals(null, imported.kcalPerKg)
         assertEquals(null, imported.expiryDate)
     }
 

app/src/test/java/de/krisenvorrat/app/data/export/TestFakes.kt

@@ -121,10 +121,9 @@ internal fun buildItemEntity(id: String = "item1") = ItemEntity(
     quantity = 2.0,
     unit = "Stk",
     unitPrice = 1.5,
-    kcalPer100g = null,
+    kcalPerKg = null,
     expiryDate = null,
     locationId = 1,
-    minStock = 1.0,
     notes = "",
     lastUpdated = 0L
 )

app/src/test/java/de/krisenvorrat/app/data/repository/ItemRepositoryImplTest.kt

@@ -92,10 +92,9 @@ private fun buildItem(
     quantity = 2.0,
     unit = "Stk",
     unitPrice = 1.5,
-    kcalPer100g = null,
+    kcalPerKg = null,
     expiryDate = null,
     locationId = locationId,
-    minStock = 1.0,
     notes = "",
     lastUpdated = 0L
 )

app/src/test/java/de/krisenvorrat/app/data/sync/SyncServiceImplTest.kt

@@ -47,10 +47,9 @@ class SyncServiceImplTest {
                 quantity = 5.0,
                 unit = "Dose",
                 unitPrice = 1.29,
-                kcalPer100g = 100,
+                kcalPerKg = 100,
                 expiryDate = "2027-06-01",
                 locationId = 1,
-                minStock = 2.0,
                 notes = "",
                 lastUpdated = System.currentTimeMillis()
             )

app/src/test/java/de/krisenvorrat/app/domain/usecase/CalculateSupplyRangeUseCaseTest.kt

@@ -9,10 +9,10 @@ class CalculateSupplyRangeUseCaseTest {
 
     @Test
     fun test_invoke_withKgItems_returnsCorrectDays() {
-        // Given – 2 kg Reis à 350 kcal/100g = 7000 kcal
+        // Given – 2 kg Reis à 3500 kcal/kg = 7000 kcal
         // 4000 kcal/Tag (2 × 2000) → 1.75 Tage
         val items = listOf(
-            buildTestItem(id = "1", quantity = 2.0, unit = "kg", kcalPer100g = 350)
+            buildTestItem(id = "1", quantity = 2.0, unit = "kg", kcalPerKg = 3500)
         )
 
         // When
@@ -24,10 +24,10 @@ class CalculateSupplyRangeUseCaseTest {
 
     @Test
     fun test_invoke_withGramItems_returnsCorrectDays() {
-        // Given – 500 g Nudeln à 360 kcal/100g = 1800 kcal
+        // Given – 500 g Nudeln à 3600 kcal/kg = 1800 kcal
         // 2000 kcal/Tag → 0.9 Tage
         val items = listOf(
-            buildTestItem(id = "1", quantity = 500.0, unit = "g", kcalPer100g = 360)
+            buildTestItem(id = "1", quantity = 500.0, unit = "g", kcalPerKg = 3600)
         )
 
         // When
@@ -39,11 +39,11 @@ class CalculateSupplyRangeUseCaseTest {
 
     @Test
     fun test_invoke_withMultipleItems_sumsTotalKcal() {
-        // Given – 1 kg Reis (350 kcal/100g = 3500 kcal) + 500 g Nudeln (360 kcal/100g = 1800 kcal) = 5300 kcal
+        // Given – 1 kg Reis (3500 kcal/kg = 3500 kcal) + 500 g Nudeln (3600 kcal/kg = 1800 kcal) = 5300 kcal
         // 4000 kcal/Tag → 1.325 Tage
         val items = listOf(
-            buildTestItem(id = "1", quantity = 1.0, unit = "kg", kcalPer100g = 350),
+            buildTestItem(id = "1", quantity = 1.0, unit = "kg", kcalPerKg = 3500),
-            buildTestItem(id = "2", quantity = 500.0, unit = "g", kcalPer100g = 360)
+            buildTestItem(id = "2", quantity = 500.0, unit = "g", kcalPerKg = 3600)
         )
 
         // When
@@ -64,13 +64,13 @@ class CalculateSupplyRangeUseCaseTest {
 
     @Test
     fun test_invoke_withNullKcal_skipsItem() {
-        // Given – Item ohne kcalPer100g wird ignoriert
+        // Given – Item ohne kcalPerKg wird ignoriert
         val items = listOf(
-            buildTestItem(id = "1", quantity = 1.0, unit = "kg", kcalPer100g = null),
+            buildTestItem(id = "1", quantity = 1.0, unit = "kg", kcalPerKg = null),
-            buildTestItem(id = "2", quantity = 1.0, unit = "kg", kcalPer100g = 200)
+            buildTestItem(id = "2", quantity = 1.0, unit = "kg", kcalPerKg = 2000)
         )
 
-        // When – Nur 1 kg à 200 kcal/100g = 2000 kcal, 2000 kcal/Tag = 1.0 Tage
+        // When – Nur 1 kg à 2000 kcal/kg = 2000 kcal, 2000 kcal/Tag = 1.0 Tage
         val result = useCase(items, totalDailyKcal = 2000)
 
         // Then
@@ -81,7 +81,7 @@ class CalculateSupplyRangeUseCaseTest {
     fun test_invoke_withNonWeightUnit_skipsItem() {
         // Given – "Stk" ist keine Gewichtseinheit → wird ignoriert
         val items = listOf(
-            buildTestItem(id = "1", quantity = 5.0, unit = "Stk", kcalPer100g = 200)
+            buildTestItem(id = "1", quantity = 5.0, unit = "Stk", kcalPerKg = 2000)
         )
 
         // When
@@ -95,7 +95,7 @@ class CalculateSupplyRangeUseCaseTest {
     fun test_invoke_withZeroTotalDailyKcal_returnsZero() {
         // Given
         val items = listOf(
-            buildTestItem(id = "1", quantity = 1.0, unit = "kg", kcalPer100g = 350)
+            buildTestItem(id = "1", quantity = 1.0, unit = "kg", kcalPerKg = 3500)
         )
 
         // When
@@ -107,10 +107,10 @@ class CalculateSupplyRangeUseCaseTest {
 
     @Test
     fun test_invoke_withDefaultParameters_uses4000KcalPerDay() {
-        // Given – 4 kg Reis à 350 kcal/100g = 14000 kcal
+        // Given – 4 kg Reis à 3500 kcal/kg = 14000 kcal
         // Default: 4000 kcal/Tag → 3.5 Tage
         val items = listOf(
-            buildTestItem(id = "1", quantity = 4.0, unit = "kg", kcalPer100g = 350)
+            buildTestItem(id = "1", quantity = 4.0, unit = "kg", kcalPerKg = 3500)
         )
 
         // When
@@ -122,10 +122,10 @@ class CalculateSupplyRangeUseCaseTest {
 
     @Test
     fun test_invoke_withMgUnit_convertsCorrectly() {
-        // Given – 500000 mg = 500 g à 200 kcal/100g = 1000 kcal
+        // Given – 500000 mg = 500 g à 2000 kcal/kg = 1000 kcal
         // 1000 kcal/Tag → 1.0 Tag
         val items = listOf(
-            buildTestItem(id = "1", quantity = 500000.0, unit = "mg", kcalPer100g = 200)
+            buildTestItem(id = "1", quantity = 500000.0, unit = "mg", kcalPerKg = 2000)
         )
 
         // When
@@ -137,12 +137,12 @@ class CalculateSupplyRangeUseCaseTest {
 
     @Test
     fun test_invoke_withMixedUnits_onlyCountsWeightBased() {
-        // Given – 1 kg (350 kcal/100g) + 5 Stk (ignored) + 2 L (ignored)
+        // Given – 1 kg (3500 kcal/kg) + 5 Stk (ignored) + 2 L (ignored)
         // Total: 3500 kcal, 2000 kcal/Tag → 1.75 Tage
         val items = listOf(
-            buildTestItem(id = "1", quantity = 1.0, unit = "kg", kcalPer100g = 350),
+            buildTestItem(id = "1", quantity = 1.0, unit = "kg", kcalPerKg = 3500),
-            buildTestItem(id = "2", quantity = 5.0, unit = "Stk", kcalPer100g = 100),
+            buildTestItem(id = "2", quantity = 5.0, unit = "Stk", kcalPerKg = 1000),
-            buildTestItem(id = "3", quantity = 2.0, unit = "L", kcalPer100g = 45)
+            buildTestItem(id = "3", quantity = 2.0, unit = "L", kcalPerKg = 450)
         )
 
         // When

app/src/test/java/de/krisenvorrat/app/domain/usecase/GetMinStockWarningsUseCaseTest.kt

@@ -1,128 +0,0 @@
-package de.krisenvorrat.app.domain.usecase
-
-import org.junit.Assert.assertEquals
-import org.junit.Assert.assertTrue
-import org.junit.Test
-
-class GetMinStockWarningsUseCaseTest {
-
-    private val useCase = GetMinStockWarningsUseCase()
-
-    @Test
-    fun test_invoke_withItemBelowMinStock_returnsWarning() {
-        // Given
-        val items = listOf(
-            buildTestItem(id = "1", quantity = 2.0, minStock = 5.0)
-        )
-
-        // When
-        val result = useCase(items)
-
-        // Then
-        assertEquals(1, result.size)
-        assertEquals(3.0, result[0].deficit, 0.001)
-    }
-
-    @Test
-    fun test_invoke_withItemAtMinStock_returnsNoWarning() {
-        // Given
-        val items = listOf(
-            buildTestItem(id = "1", quantity = 5.0, minStock = 5.0)
-        )
-
-        // When
-        val result = useCase(items)
-
-        // Then
-        assertTrue(result.isEmpty())
-    }
-
-    @Test
-    fun test_invoke_withItemAboveMinStock_returnsNoWarning() {
-        // Given
-        val items = listOf(
-            buildTestItem(id = "1", quantity = 10.0, minStock = 5.0)
-        )
-
-        // When
-        val result = useCase(items)
-
-        // Then
-        assertTrue(result.isEmpty())
-    }
-
-    @Test
-    fun test_invoke_withEmptyList_returnsEmptyList() {
-        // Given / When
-        val result = useCase(emptyList())
-
-        // Then
-        assertTrue(result.isEmpty())
-    }
-
-    @Test
-    fun test_invoke_withZeroMinStock_returnsNoWarning() {
-        // Given
-        val items = listOf(
-            buildTestItem(id = "1", quantity = 0.0, minStock = 0.0)
-        )
-
-        // When
-        val result = useCase(items)
-
-        // Then
-        assertTrue(result.isEmpty())
-    }
-
-    @Test
-    fun test_invoke_withZeroQuantity_returnsWarning() {
-        // Given
-        val items = listOf(
-            buildTestItem(id = "1", quantity = 0.0, minStock = 3.0)
-        )
-
-        // When
-        val result = useCase(items)
-
-        // Then
-        assertEquals(1, result.size)
-        assertEquals(3.0, result[0].deficit, 0.001)
-    }
-
-    @Test
-    fun test_invoke_resultIsSortedByDeficitDescending() {
-        // Given
-        val items = listOf(
-            buildTestItem(id = "1", quantity = 3.0, minStock = 5.0),   // deficit 2
-            buildTestItem(id = "2", quantity = 1.0, minStock = 10.0),  // deficit 9
-            buildTestItem(id = "3", quantity = 4.0, minStock = 7.0)    // deficit 3
-        )
-
-        // When
-        val result = useCase(items)
-
-        // Then
-        assertEquals(3, result.size)
-        assertEquals("2", result[0].item.id) // deficit 9
-        assertEquals("3", result[1].item.id) // deficit 3
-        assertEquals("1", result[2].item.id) // deficit 2
-    }
-
-    @Test
-    fun test_invoke_withMixedItems_onlyReturnsBelowMinStock() {
-        // Given
-        val items = listOf(
-            buildTestItem(id = "1", quantity = 2.0, minStock = 5.0),   // below
-            buildTestItem(id = "2", quantity = 10.0, minStock = 3.0),  // above
-            buildTestItem(id = "3", quantity = 5.0, minStock = 5.0),   // equal
-            buildTestItem(id = "4", quantity = 0.0, minStock = 1.0)    // below
-        )
-
-        // When
-        val result = useCase(items)
-
-        // Then
-        assertEquals(2, result.size)
-        assertTrue(result.all { it.item.id in listOf("1", "4") })
-    }
-}

app/src/test/java/de/krisenvorrat/app/domain/usecase/TestHelpers.kt

@@ -10,10 +10,9 @@ internal fun buildTestItem(
     quantity: Double = 1.0,
     unit: String = "Stk",
     unitPrice: Double = 0.0,
-    kcalPer100g: Int? = null,
+    kcalPerKg: Int? = null,
     expiryDate: LocalDate? = null,
-    locationId: Int = 1,
+    locationId: Int = 1
-    minStock: Double = 0.0
 ) = ItemEntity(
     id = id,
     name = name,
@@ -21,10 +20,9 @@ internal fun buildTestItem(
     quantity = quantity,
     unit = unit,
     unitPrice = unitPrice,
-    kcalPer100g = kcalPer100g,
+    kcalPerKg = kcalPerKg,
     expiryDate = expiryDate,
     locationId = locationId,
-    minStock = minStock,
     notes = "",
     lastUpdated = 0L
 )

app/src/test/java/de/krisenvorrat/app/ui/category/CategoryListViewModelTest.kt

@@ -293,8 +293,8 @@ class CategoryListViewModelTest {
         fakeItemRepository.addItem(
             ItemEntity(
                 id = "i1", name = "Reis", categoryId = 1, quantity = 1.0,
-                unit = "kg", unitPrice = 0.0, kcalPer100g = null, expiryDate = null,
+                unit = "kg", unitPrice = 0.0, kcalPerKg = null, expiryDate = null,
-                locationId = 1, minStock = 0.0, notes = "", lastUpdated = 0L
+                locationId = 1, notes = "", lastUpdated = 0L
             )
         )
         val category = CategoryEntity(id = 1, name = "Lebensmittel")
@@ -318,8 +318,8 @@ class CategoryListViewModelTest {
         fakeItemRepository.addItem(
             ItemEntity(
                 id = "i1", name = "Reis", categoryId = 1, quantity = 1.0,
-                unit = "kg", unitPrice = 0.0, kcalPer100g = null, expiryDate = null,
+                unit = "kg", unitPrice = 0.0, kcalPerKg = null, expiryDate = null,
-                locationId = 1, minStock = 0.0, notes = "", lastUpdated = 0L
+                locationId = 1, notes = "", lastUpdated = 0L
             )
         )
         val category = CategoryEntity(id = 1, name = "Lebensmittel")
@@ -345,8 +345,8 @@ class CategoryListViewModelTest {
         fakeItemRepository.addItem(
             ItemEntity(
                 id = "i1", name = "Reis", categoryId = 1, quantity = 1.0,
-                unit = "kg", unitPrice = 0.0, kcalPer100g = null, expiryDate = null,
+                unit = "kg", unitPrice = 0.0, kcalPerKg = null, expiryDate = null,
-                locationId = 1, minStock = 0.0, notes = "", lastUpdated = 0L
+                locationId = 1, notes = "", lastUpdated = 0L
             )
         )
         viewModel.showDeleteDialog(CategoryEntity(id = 1, name = "Lebensmittel"))

app/src/test/java/de/krisenvorrat/app/ui/dashboard/DashboardViewModelTest.kt

@@ -14,7 +14,6 @@ import de.krisenvorrat.app.domain.usecase.CalculateCategorySummaryUseCase
 import de.krisenvorrat.app.domain.usecase.CalculateSupplyRangeUseCase
 import de.krisenvorrat.app.domain.usecase.CalculateTotalValueUseCase
 import de.krisenvorrat.app.domain.usecase.GetExpiryWarningsUseCase
-import de.krisenvorrat.app.domain.usecase.GetMinStockWarningsUseCase
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.flow.Flow
@@ -61,8 +60,7 @@ class DashboardViewModelTest {
         calculateCategorySummary = CalculateCategorySummaryUseCase(),
         calculateTotalValue = CalculateTotalValueUseCase(),
         calculateSupplyRange = CalculateSupplyRangeUseCase(),
-        getExpiryWarnings = GetExpiryWarningsUseCase(),
+        getExpiryWarnings = GetExpiryWarningsUseCase()
-        getMinStockWarnings = GetMinStockWarningsUseCase()
     )
 
     @Test
@@ -80,7 +78,6 @@ class DashboardViewModelTest {
         assertEquals(0.0, state.totalValue, 0.001)
         assertEquals(0.0, state.supplyRangeDays, 0.001)
         assertFalse(state.hasExpiryWarnings)
-        assertFalse(state.hasMinStockWarnings)
         assertEquals(0, state.totalItemCount)
     }
 
@@ -151,7 +148,7 @@ class DashboardViewModelTest {
         )
         fakeItemRepository.emit(
             listOf(
-                buildTestItem(id = "a", quantity = 1000.0, unit = "g", kcalPer100g = 200)
+                buildTestItem(id = "a", quantity = 1000.0, unit = "g", kcalPerKg = 2000)
             )
         )
         viewModel = createViewModel()
@@ -174,7 +171,7 @@ class DashboardViewModelTest {
             allZeroAgeGroups.toJson()
         )
         fakeItemRepository.emit(
-            listOf(buildTestItem(id = "a", quantity = 1000.0, unit = "g", kcalPer100g = 400))
+            listOf(buildTestItem(id = "a", quantity = 1000.0, unit = "g", kcalPerKg = 4000))
         )
         viewModel = createViewModel()
 
@@ -203,39 +200,6 @@ class DashboardViewModelTest {
         assertEquals(1, state.expiryWarnings.size)
     }
 
-    @Test
-    fun test_init_withMinStockViolation_minStockWarningsArePresent() = runTest(testDispatcher) {
-        // Given – item with quantity 1 but minStock 5
-        fakeItemRepository.emit(
-            listOf(buildTestItem(id = "a", quantity = 1.0, minStock = 5.0))
-        )
-        viewModel = createViewModel()
-
-        // When
-        advanceUntilIdle()
-
-        // Then
-        val state = viewModel.uiState.value
-        assertTrue(state.hasMinStockWarnings)
-        assertEquals(1, state.minStockWarnings.size)
-        assertEquals(4.0, state.minStockWarnings.first().deficit, 0.001)
-    }
-
-    @Test
-    fun test_init_withSufficientStock_noMinStockWarnings() = runTest(testDispatcher) {
-        // Given – item with quantity above minStock
-        fakeItemRepository.emit(
-            listOf(buildTestItem(id = "a", quantity = 10.0, minStock = 5.0))
-        )
-        viewModel = createViewModel()
-
-        // When
-        advanceUntilIdle()
-
-        // Then
-        assertFalse(viewModel.uiState.value.hasMinStockWarnings)
-    }
-
     @Test
     fun test_init_withFarExpiryDate_noExpiryWarnings() = runTest(testDispatcher) {
         // Given – item expiring in 2 years (beyond WARNING_MONTHS=12)
@@ -282,10 +246,9 @@ private fun buildTestItem(
     quantity: Double = 1.0,
     unit: String = "Stk",
     unitPrice: Double = 0.0,
-    kcalPer100g: Int? = null,
+    kcalPerKg: Int? = null,
     expiryDate: LocalDate? = null,
-    locationId: Int = 1,
+    locationId: Int = 1
-    minStock: Double = 0.0
 ) = ItemEntity(
     id = id,
     name = name,
@@ -293,10 +256,9 @@ private fun buildTestItem(
     quantity = quantity,
     unit = unit,
     unitPrice = unitPrice,
-    kcalPer100g = kcalPer100g,
+    kcalPerKg = kcalPerKg,
     expiryDate = expiryDate,
     locationId = locationId,
-    minStock = minStock,
     notes = "",
     lastUpdated = 0L
 )

app/src/test/java/de/krisenvorrat/app/ui/item/ItemFormViewModelTest.kt

@@ -149,8 +149,8 @@ class ItemFormViewModelTest {
         fakeItemRepository.addItem(
             ItemEntity(
                 id = "prev-1", name = "Alt", categoryId = 1, quantity = 1.0,
-                unit = "kg", unitPrice = 0.0, kcalPer100g = null, expiryDate = null,
+                unit = "kg", unitPrice = 0.0, kcalPerKg = null, expiryDate = null,
-                locationId = 2, minStock = 0.0, notes = "", lastUpdated = 1000L
+                locationId = 2, notes = "", lastUpdated = 1000L
             )
         )
         fakeLocationRepository.emit(
@@ -174,8 +174,8 @@ class ItemFormViewModelTest {
         fakeItemRepository.addItem(
             ItemEntity(
                 id = "prev-1", name = "Alt", categoryId = 1, quantity = 1.0,
-                unit = "kg", unitPrice = 0.0, kcalPer100g = null, expiryDate = null,
+                unit = "kg", unitPrice = 0.0, kcalPerKg = null, expiryDate = null,
-                locationId = 99, minStock = 0.0, notes = "", lastUpdated = 1000L
+                locationId = 99, notes = "", lastUpdated = 1000L
             )
         )
         fakeLocationRepository.emit(
@@ -205,10 +205,9 @@ class ItemFormViewModelTest {
             quantity = 5.0,
             unit = "Stk",
             unitPrice = 2.5,
-            kcalPer100g = 120,
+            kcalPerKg = 120,
             expiryDate = LocalDate.of(2026, 12, 31),
             locationId = 2,
-            minStock = 2.0,
             notes = "Bohnen",
             lastUpdated = 1000L
         )
@@ -227,10 +226,9 @@ class ItemFormViewModelTest {
         assertEquals("5", state.quantity)
         assertEquals("Stk", state.unit)
         assertEquals("2.5", state.unitPrice)
-        assertEquals("120", state.kcalPer100g)
+        assertEquals("120", state.kcalPerKg)
         assertEquals(LocalDate.of(2026, 12, 31), state.expiryDate)
         assertEquals(2, state.locationId)
-        assertEquals("2", state.minStock)
         assertEquals("Bohnen", state.notes)
     }
 
@@ -463,10 +461,9 @@ class ItemFormViewModelTest {
             quantity = 2.0,
             unit = "Stk",
             unitPrice = 0.0,
-            kcalPer100g = null,
+            kcalPerKg = null,
             expiryDate = null,
             locationId = 1,
-            minStock = 0.0,
             notes = "",
             lastUpdated = 0L
         )

app/src/test/java/de/krisenvorrat/app/ui/item/ItemListViewModelTest.kt

@@ -230,10 +230,9 @@ private fun buildItemEntity(
     quantity = 2.0,
     unit = "Stk",
     unitPrice = 1.5,
-    kcalPer100g = null,
+    kcalPerKg = null,
     expiryDate = null,
     locationId = locationId,
-    minStock = 1.0,
     notes = "",
     lastUpdated = 0L
 )

app/src/test/java/de/krisenvorrat/app/ui/location/LocationListViewModelTest.kt

@@ -292,8 +292,8 @@ class LocationListViewModelTest {
         fakeItemRepository.addItem(
             ItemEntity(
                 id = "i1", name = "Reis", categoryId = 1, quantity = 1.0,
-                unit = "kg", unitPrice = 0.0, kcalPer100g = null, expiryDate = null,
+                unit = "kg", unitPrice = 0.0, kcalPerKg = null, expiryDate = null,
-                locationId = 1, minStock = 0.0, notes = "", lastUpdated = 0L
+                locationId = 1, notes = "", lastUpdated = 0L
             )
         )
         val location = LocationEntity(id = 1, name = "Keller")
@@ -317,8 +317,8 @@ class LocationListViewModelTest {
         fakeItemRepository.addItem(
             ItemEntity(
                 id = "i1", name = "Reis", categoryId = 1, quantity = 1.0,
-                unit = "kg", unitPrice = 0.0, kcalPer100g = null, expiryDate = null,
+                unit = "kg", unitPrice = 0.0, kcalPerKg = null, expiryDate = null,
-                locationId = 1, minStock = 0.0, notes = "", lastUpdated = 0L
+                locationId = 1, notes = "", lastUpdated = 0L
             )
         )
         val location = LocationEntity(id = 1, name = "Keller")
@@ -344,8 +344,8 @@ class LocationListViewModelTest {
         fakeItemRepository.addItem(
             ItemEntity(
                 id = "i1", name = "Wasser", categoryId = 1, quantity = 1.0,
-                unit = "Flasche", unitPrice = 0.0, kcalPer100g = null, expiryDate = null,
+                unit = "Flasche", unitPrice = 0.0, kcalPerKg = null, expiryDate = null,
-                locationId = 1, minStock = 0.0, notes = "", lastUpdated = 0L
+                locationId = 1, notes = "", lastUpdated = 0L
             )
         )
         viewModel.showDeleteDialog(LocationEntity(id = 1, name = "Keller"))

app/src/test/java/de/krisenvorrat/app/ui/warnings/WarningsViewModelTest.kt

@@ -3,7 +3,6 @@ package de.krisenvorrat.app.ui.warnings
 import de.krisenvorrat.app.data.db.entity.ItemEntity
 import de.krisenvorrat.app.domain.repository.ItemRepository
 import de.krisenvorrat.app.domain.usecase.GetExpiryWarningsUseCase
-import de.krisenvorrat.app.domain.usecase.GetMinStockWarningsUseCase
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.flow.Flow
@@ -41,8 +40,7 @@ class WarningsViewModelTest {
 
     private fun createViewModel() = WarningsViewModel(
         itemRepository = fakeItemRepository,
-        getExpiryWarnings = GetExpiryWarningsUseCase(),
+        getExpiryWarnings = GetExpiryWarningsUseCase()
-        getMinStockWarnings = GetMinStockWarningsUseCase()
     )
 
     @Test
@@ -57,7 +55,6 @@ class WarningsViewModelTest {
         val state = viewModel.uiState.value
         assertFalse(state.isLoading)
         assertFalse(state.hasExpiryWarnings)
-        assertFalse(state.hasMinStockWarnings)
         assertFalse(state.hasWarnings)
         assertEquals(0, state.totalWarningCount)
     }
@@ -82,48 +79,6 @@ class WarningsViewModelTest {
         assertEquals(1, state.totalWarningCount)
     }
 
-    @Test
-    fun test_init_withMinStockViolation_minStockWarningsArePresent() = runTest(testDispatcher) {
-        // Given – item with quantity 1 but minStock 5
-        fakeItemRepository.emit(
-            listOf(buildTestItem(id = "a", quantity = 1.0, minStock = 5.0))
-        )
-        viewModel = createViewModel()
-
-        // When
-        advanceUntilIdle()
-
-        // Then
-        val state = viewModel.uiState.value
-        assertTrue(state.hasMinStockWarnings)
-        assertEquals(1, state.minStockWarnings.size)
-        assertEquals(4.0, state.minStockWarnings.first().deficit, 0.001)
-        assertTrue(state.hasWarnings)
-        assertEquals(1, state.totalWarningCount)
-    }
-
-    @Test
-    fun test_init_withBothWarnings_totalCountIsCombined() = runTest(testDispatcher) {
-        // Given – one expiring item and one below min stock
-        val expiryDate = LocalDate.now().plusMonths(3)
-        fakeItemRepository.emit(
-            listOf(
-                buildTestItem(id = "a", expiryDate = expiryDate),
-                buildTestItem(id = "b", quantity = 1.0, minStock = 5.0)
-            )
-        )
-        viewModel = createViewModel()
-
-        // When
-        advanceUntilIdle()
-
-        // Then
-        val state = viewModel.uiState.value
-        assertTrue(state.hasExpiryWarnings)
-        assertTrue(state.hasMinStockWarnings)
-        assertEquals(2, state.totalWarningCount)
-    }
-
     @Test
     fun test_init_withFarExpiryDate_noExpiryWarnings() = runTest(testDispatcher) {
         // Given – item expiring in 2 years (beyond WARNING_MONTHS=12)
@@ -140,21 +95,6 @@ class WarningsViewModelTest {
         assertFalse(viewModel.uiState.value.hasExpiryWarnings)
     }
 
-    @Test
-    fun test_init_withSufficientStock_noMinStockWarnings() = runTest(testDispatcher) {
-        // Given – item with quantity above minStock
-        fakeItemRepository.emit(
-            listOf(buildTestItem(id = "a", quantity = 10.0, minStock = 5.0))
-        )
-        viewModel = createViewModel()
-
-        // When
-        advanceUntilIdle()
-
-        // Then
-        assertFalse(viewModel.uiState.value.hasMinStockWarnings)
-    }
-
     @Test
     fun test_reactiveUpdate_whenItemsChange_stateUpdates() = runTest(testDispatcher) {
         // Given – start with no warnings
@@ -162,14 +102,15 @@ class WarningsViewModelTest {
         advanceUntilIdle()
         assertFalse(viewModel.uiState.value.hasWarnings)
 
-        // When – an item below min stock appears
+        // When – an expiring item appears
+        val expiryDate = LocalDate.now().plusMonths(3)
         fakeItemRepository.emit(
-            listOf(buildTestItem(id = "a", quantity = 1.0, minStock = 5.0))
+            listOf(buildTestItem(id = "a", expiryDate = expiryDate))
         )
         advanceUntilIdle()
 
         // Then
-        assertTrue(viewModel.uiState.value.hasMinStockWarnings)
+        assertTrue(viewModel.uiState.value.hasExpiryWarnings)
         assertEquals(1, viewModel.uiState.value.totalWarningCount)
     }
 }
@@ -183,10 +124,9 @@ private fun buildTestItem(
     quantity: Double = 1.0,
     unit: String = "Stk",
     unitPrice: Double = 0.0,
-    kcalPer100g: Int? = null,
+    kcalPerKg: Int? = null,
     expiryDate: LocalDate? = null,
-    locationId: Int = 1,
+    locationId: Int = 1
-    minStock: Double = 0.0
 ) = ItemEntity(
     id = id,
     name = name,
@@ -194,10 +134,9 @@ private fun buildTestItem(
     quantity = quantity,
     unit = unit,
     unitPrice = unitPrice,
-    kcalPer100g = kcalPer100g,
+    kcalPerKg = kcalPerKg,
     expiryDate = expiryDate,
     locationId = locationId,
-    minStock = minStock,
     notes = "",
     lastUpdated = 0L
 )

server/src/main/kotlin/de/krisenvorrat/server/db/Tables.kt

@@ -23,10 +23,9 @@ internal object Items : Table("items") {
     val quantity = double("quantity")
     val unit = varchar("unit", 50)
     val unitPrice = double("unit_price")
-    val kcalPer100g = integer("kcal_per_100g").nullable()
+    val kcalPerKg = integer("kcal_per_kg").nullable()
     val expiryDate = varchar("expiry_date", 10).nullable()
     val locationId = integer("location_id").references(Locations.id)
-    val minStock = double("min_stock")
     val notes = text("notes")
     val lastUpdated = long("last_updated")
 

server/src/main/kotlin/de/krisenvorrat/server/repository/InventoryRepository.kt

@@ -45,10 +45,9 @@ internal class InventoryRepository {
                     it[quantity] = item.quantity
                     it[unit] = item.unit
                     it[unitPrice] = item.unitPrice
-                    it[kcalPer100g] = item.kcalPer100g
+                    it[kcalPerKg] = item.kcalPerKg
                     it[expiryDate] = item.expiryDate
                     it[locationId] = item.locationId
-                    it[minStock] = item.minStock
                     it[notes] = item.notes
                     it[lastUpdated] = item.lastUpdated
                 }
@@ -87,10 +86,9 @@ internal class InventoryRepository {
                     quantity = it[Items.quantity],
                     unit = it[Items.unit],
                     unitPrice = it[Items.unitPrice],
-                    kcalPer100g = it[Items.kcalPer100g],
+                    kcalPerKg = it[Items.kcalPerKg],
                     expiryDate = it[Items.expiryDate],
                     locationId = it[Items.locationId],
-                    minStock = it[Items.minStock],
                     notes = it[Items.notes],
                     lastUpdated = it[Items.lastUpdated]
                 )

server/src/test/kotlin/de/krisenvorrat/server/ApplicationTest.kt

@@ -197,10 +197,9 @@ class ApplicationTest {
                 quantity = 5.0,
                 unit = "Stück",
                 unitPrice = 3.99,
-                kcalPer100g = 250,
+                kcalPerKg = 250,
                 expiryDate = "2027-06-15",
                 locationId = 1,
-                minStock = 2.0,
                 notes = "Vollkornbrot in der Dose",
                 lastUpdated = 1715000000L
             )

server/src/test/kotlin/de/krisenvorrat/server/EndToEndSyncTest.kt

@@ -102,10 +102,9 @@ class EndToEndSyncTest {
                     quantity = 3.0,
                     unit = "Stück",
                     unitPrice = 1.50,
-                    kcalPer100g = null,
+                    kcalPerKg = null,
                     expiryDate = null,
                     locationId = 10,
-                    minStock = 1.0,
                     notes = "",
                     lastUpdated = 1715100000L
                 )
@@ -174,10 +173,9 @@ class EndToEndSyncTest {
                     quantity = 10.0,
                     unit = "Stück",
                     unitPrice = 3.99,
-                    kcalPer100g = 250,
+                    kcalPerKg = 250,
                     expiryDate = "2027-06-15",
                     locationId = 1,
-                    minStock = 2.0,
                     notes = "Menge erhöht",
                     lastUpdated = 1715200000L
                 )
@@ -245,10 +243,9 @@ class EndToEndSyncTest {
                 quantity = 5.0,
                 unit = "Stück",
                 unitPrice = 3.99,
-                kcalPer100g = 250,
+                kcalPerKg = 250,
                 expiryDate = "2027-06-15",
                 locationId = 1,
-                minStock = 2.0,
                 notes = "Vollkornbrot in der Dose",
                 lastUpdated = 1715000000L
             ),
@@ -259,10 +256,9 @@ class EndToEndSyncTest {
                 quantity = 24.0,
                 unit = "Liter",
                 unitPrice = 0.49,
-                kcalPer100g = 0,
+                kcalPerKg = 0,
                 expiryDate = "2028-01-01",
                 locationId = 2,
-                minStock = 12.0,
                 notes = "Stilles Wasser",
                 lastUpdated = 1715000000L
             )

server/src/test/kotlin/de/krisenvorrat/server/repository/InventoryRepositoryTest.kt

@@ -66,10 +66,9 @@ class InventoryRepositoryTest {
         assertEquals(5.0, item.quantity, 0.001)
         assertEquals("Stück", item.unit)
         assertEquals(3.99, item.unitPrice, 0.001)
-        assertEquals(250, item.kcalPer100g)
+        assertEquals(250, item.kcalPerKg)
         assertEquals("2027-06-15", item.expiryDate)
         assertEquals(1, item.locationId)
-        assertEquals(2.0, item.minStock, 0.001)
         assertEquals("Vollkornbrot in der Dose", item.notes)
         assertEquals(1715000000L, item.lastUpdated)
 
@@ -118,10 +117,9 @@ class InventoryRepositoryTest {
                     quantity = 10.0,
                     unit = "Stück",
                     unitPrice = 1.50,
-                    kcalPer100g = null,
+                    kcalPerKg = null,
                     expiryDate = null,
                     locationId = 1,
-                    minStock = 5.0,
                     notes = "",
                     lastUpdated = 1715000000L
                 )
@@ -135,7 +133,7 @@ class InventoryRepositoryTest {
 
         // Then
         val item = result.items[0]
-        assertNull(item.kcalPer100g)
+        assertNull(item.kcalPerKg)
         assertNull(item.expiryDate)
     }
 
@@ -156,10 +154,9 @@ class InventoryRepositoryTest {
                 quantity = 5.0,
                 unit = "Stück",
                 unitPrice = 3.99,
-                kcalPer100g = 250,
+                kcalPerKg = 250,
                 expiryDate = "2027-06-15",
                 locationId = 1,
-                minStock = 2.0,
                 notes = "Vollkornbrot in der Dose",
                 lastUpdated = 1715000000L
             )

shared/src/main/kotlin/de/krisenvorrat/shared/model/ItemDto.kt

@@ -10,10 +10,9 @@ data class ItemDto(
     val quantity: Double,
     val unit: String,
     val unitPrice: Double,
-    val kcalPer100g: Int?,
+    val kcalPerKg: Int?,
     val expiryDate: String?,
     val locationId: Int,
-    val minStock: Double,
     val notes: String,
     val lastUpdated: Long
 )