New Gradle module :shared (pure Kotlin/JVM) containing @Serializable
DTO classes for use by both the Android app and future Ktor server.
shared/src/main/kotlin/de/krisenvorrat/shared/model/:
- InventoryDto: root DTO replacing ExportData (version, categories,
locations, items, settings)
- CategoryDto, LocationDto, ItemDto, SettingDto: extracted from
the former *Export data classes in :app
Migration in :app:
- ExportData.kt deleted (classes moved to :shared)
- ImportExportRepositoryImpl now imports from de.krisenvorrat.shared.model
- app/build.gradle.kts adds implementation(project(:shared))
Build config:
- libs.versions.toml: added kotlin-jvm plugin entry
- build.gradle.kts (root): registered kotlin-jvm plugin
- settings.gradle.kts: include(:shared)
JSON wire format is unchanged; all 165 existing tests pass.
Closes#39
