feat(tag): Reimplement tags

[OffRange]

This PR reimplements the tag feature from v1. It allows all features requested by #48

[Copilot]

Pull request overview

This PR reintroduces a first-class “tags” feature end-to-end (domain model → Room persistence → UI), enabling tag assignment to items, tag-based filtering, and tag-aware search, while also centralizing “natural” (numeric-aware, case-insensitive) sorting via a shared SortUseCase.

Changes:

• Add a Tag domain model and persist tags via new Room tag / tag_cross_ref tables and a TagDao.
• Integrate tags into item search (matched-by-tag), list filtering UI/state, and login create/view flows (chips + suggestions/autocomplete).
• Introduce SortUseCase and reuse it for vault sorting, item sorting, and tag sorting.

Reviewed changes

Copilot reviewed 68 out of 69 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
gradle/libs.versions.toml	Adds AndroidX SQLite bundled dependency version/catalog entry.
feature/vault/src/main/kotlin/de/davis/keygo/feature/vault/domain/usecase/ObserveVaultsAndSelectionUseCase.kt	Switch vault sorting to shared SortUseCase (natural order).
feature/vault/src/test/kotlin/de/davis/keygo/feature/vault/domain/usecase/ObserveVaultsAndSelectionUseCaseTest.kt	Adds test coverage for natural numeric vault sorting.
feature/list_screen/src/main/kotlin/de/davis/keygo/feature/list_screen/domain/model/FilterState.kt	Replaces label filtering with selectedTags: Set<Tag>.
feature/list_screen/src/test/kotlin/de/davis/keygo/feature/list_screen/domain/model/FilterStateTest.kt	Updates filter-state default tests for tags.
feature/list_screen/src/main/kotlin/de/davis/keygo/feature/list_screen/domain/usecase/FilterUseCase.kt	Adds tag-id filtering and delegates sorting to SortUseCase.
feature/list_screen/src/test/kotlin/de/davis/keygo/feature/list_screen/domain/usecase/FilterUseCaseTest.kt	Adds tests for tag-id filtering behavior.
feature/list_screen/src/main/kotlin/de/davis/keygo/feature/list_screen/presentation/ItemListViewModel.kt	Wires tag selection to repository query + filter pipeline; exposes available tag options.
feature/list_screen/src/main/kotlin/de/davis/keygo/feature/list_screen/presentation/mapper/FilterMapper.kt	Maps available tags and selected tags into bottom-sheet chip state.
feature/list_screen/src/test/kotlin/de/davis/keygo/feature/list_screen/presentation/mapper/FilterMapperTest.kt	Adds tests ensuring only visible-item tags appear and ordering follows allTags.
feature/list_screen/src/main/kotlin/de/davis/keygo/feature/list_screen/presentation/model/AvailableFilterOptions.kt	Renames labels → tags in available filter options.
feature/list_screen/src/main/kotlin/de/davis/keygo/feature/list_screen/presentation/model/FilterAction.kt	Renames label toggle action to TagToggled(Tag).
feature/list_screen/src/main/kotlin/de/davis/keygo/feature/list_screen/presentation/model/FilterBottomSheetState.kt	Renames label chips to tag chips.
feature/list_screen/src/main/kotlin/de/davis/keygo/feature/list_screen/presentation/components/FilterBottomSheet.kt	Updates bottom sheet UI to render tag chips.
feature/list_screen/src/main/kotlin/de/davis/keygo/feature/list_screen/presentation/components/ItemListContent.kt	Updates preview state for tag-match + tag chips.
feature/list_screen/src/main/res/values/strings.xml	Renames “Labels” string to “Tags”.
feature/item/view/src/main/res/values/strings.xml	Adds “Add Tag” label.
feature/item/view/src/main/kotlin/de/davis/keygo/feature/item/view/login/model/ViewLoginState.kt	Adds tags: Set<Tag> to view state.
feature/item/view/src/main/kotlin/de/davis/keygo/feature/item/view/login/model/ModificationDialog.kt	Adds tagsToSuggest for tag autocomplete.
feature/item/view/src/main/kotlin/de/davis/keygo/feature/item/view/login/ViewLoginViewModel.kt	Adds tag suggestions and tag upsert on edit.
feature/item/view/src/main/kotlin/de/davis/keygo/feature/item/view/login/ViewLoginContent.kt	Displays tags as chips and adds tag suggestion field in dialog.
feature/item/create/src/main/res/values/strings.xml	Adds tag strings for create flow.
feature/item/create/src/main/kotlin/de/davis/keygo/feature/item/create/presentation/login/model/LoginUiState.kt	Adds tag suggestion + assigned-tags fields.
feature/item/create/src/main/kotlin/de/davis/keygo/feature/item/create/presentation/login/model/LoginUiEvent.kt	Adds add/remove tag events.
feature/item/create/src/main/kotlin/de/davis/keygo/feature/item/create/presentation/login/LoginViewModel.kt	Connects all-tags suggestions and persists assigned tags in upsert.
feature/item/create/src/main/kotlin/de/davis/keygo/feature/item/create/presentation/login/LoginContent.kt	Adds tag input handling and passes tag state into form.
feature/item/create/src/main/kotlin/de/davis/keygo/feature/item/create/presentation/component/KeyGoItemForm.kt	Adds tag chip input group with suggestions.
feature/item/create/build.gradle.kts	No functional change (formatting only).
feature/item/core/src/main/res/values/strings.xml	Adds “Tags” label.
feature/item/core/src/main/kotlin/de/davis/keygo/feature/item/core/presentation/login/model/FieldType.kt	Adds FieldType.Tag.
feature/item/core/src/main/kotlin/de/davis/keygo/feature/item/core/presentation/component/KeyGoFormSuggestionField.kt	New suggestion/autocomplete form field component.
feature/item/core/src/main/kotlin/de/davis/keygo/feature/item/core/presentation/component/ChipFormGroup.kt	Adds suggestion mode + shared delimiter splitting helpers.
feature/item/core/src/main/kotlin/de/davis/keygo/feature/item/core/domain/model/UpsertLogin.kt	Adds tags to upsert model.
feature/item/core/src/main/kotlin/de/davis/keygo/feature/item/core/domain/usecase/CreateNewOrUpdateLoginUseCase.kt	Writes tags into created/updated Login.
core/util/src/main/kotlin/de/davis/keygo/core/util/domain/usecase/SortUseCase.kt	New shared natural sort implementation (numeric-aware, locale collator).
core/util/src/test/kotlin/de/davis/keygo/core/util/domain/usecase/SortUseCaseTest.kt	Tests for shared natural sort behavior.
core/item/src/main/kotlin/de/davis/keygo/core/item/domain/model/Tag.kt	New Tag type with normalized equality semantics.
core/item/src/main/kotlin/de/davis/keygo/core/item/domain/model/Item.kt	Adds tags to base Item contract.
core/item/src/main/kotlin/de/davis/keygo/core/item/domain/model/Login.kt	Adds tags to Login.
core/item/src/main/kotlin/de/davis/keygo/core/item/domain/usecase/ObserveAllTagsSortedUseCase.kt	Exposes sorted list of all tags.
core/item/src/main/kotlin/de/davis/keygo/core/item/domain/repository/ItemRepository.kt	Adds tag-related repository APIs.
core/item/src/main/kotlin/de/davis/keygo/core/item/data/local/entity/TagEntity.kt	New Room entity for tags (unique normalized).
core/item/src/main/kotlin/de/davis/keygo/core/item/data/local/entity/TagCrossRef.kt	New cross-ref entity linking items ↔ tags.
core/item/src/main/kotlin/de/davis/keygo/core/item/data/local/pojo/ItemTagProjection.kt	New DAO projection for item-tag rows.
core/item/src/main/kotlin/de/davis/keygo/core/item/data/local/pojo/ItemProjection.kt	Adds tag relation to item projections.
core/item/src/main/kotlin/de/davis/keygo/core/item/data/local/pojo/LoginProjection.kt	Switches to item projection that includes tags.
core/item/src/main/kotlin/de/davis/keygo/core/item/data/local/pojo/LightweightItemSearchResult.kt	Adds matchedTag to search result projection.
core/item/src/main/kotlin/de/davis/keygo/core/item/data/local/dao/TagDao.kt	New DAO for tag syncing, pruning, and observation.
core/item/src/main/kotlin/de/davis/keygo/core/item/data/local/dao/ItemDao.kt	Extends search SQL to include tag matching.
core/item/src/main/kotlin/de/davis/keygo/core/item/data/local/datasource/ItemDatabase.kt	Registers new tag entities/DAO in Room database.
core/item/src/main/kotlin/de/davis/keygo/core/item/data/mapper/TagMapper.kt	Maps between Tag and TagEntity + dedup to normalized.
core/item/src/main/kotlin/de/davis/keygo/core/item/data/mapper/LoginMapper.kt	Maps login projections including tags to domain Login.
core/item/src/main/kotlin/de/davis/keygo/core/item/data/mapper/ItemMapper.kt	Maps matchedTag into domain search results.
core/item/src/main/kotlin/de/davis/keygo/core/item/data/mapper/DomainInfoMapper.kt	Simplifies domain-info entity mapping using login id.
core/item/src/main/kotlin/de/davis/keygo/core/item/data/repository/LoginRepositoryImpl.kt	Syncs tags via TagDao on upsert.
core/item/src/main/kotlin/de/davis/keygo/core/item/data/repository/ItemRepositoryImpl.kt	Adds tag observation/filtering APIs and tag-aware search.
core/item/schemas/de.davis.keygo.core.item.data.local.datasource.ItemDatabase/1.json	Updates Room schema snapshot for added tag tables.
core/item/build.gradle.kts	Adds SQLite bundled dependency for JVM tests and sets unit test return-default-values.
core/item/src/testFixtures/kotlin/de/davis/keygo/core/item/FakeItemRepository.kt	Adds in-memory implementations of new tag APIs.
core/item/src/test/kotlin/de/davis/keygo/core/item/domain/model/TagTest.kt	Adds tests for tag normalization/equality behavior.
core/item/src/test/kotlin/de/davis/keygo/core/item/domain/usecase/ObserveAllTagsSortedUseCaseTest.kt	Tests distinct + sorted tag observation.
core/item/src/test/kotlin/de/davis/keygo/core/item/data/repository/ItemRepositoryImplTest.kt	Tests tag pruning on delete and observeTagsByItem.
core/item/src/test/kotlin/de/davis/keygo/core/item/data/repository/LoginRepositoryImplTest.kt	Tests tag syncing and failure propagation.
core/item/src/test/kotlin/de/davis/keygo/core/item/data/local/dao/TagDaoTest.kt	Room DAO tests for dedup, pruning, and observation.
core/item/src/test/kotlin/de/davis/keygo/core/item/data/local/dao/ItemDaoSearchTest.kt	Tests search matching by tag.
core/item/src/test/kotlin/de/davis/keygo/core/item/data/mapper/LoginMapperTest.kt	Tests mapping of tags from entities and tag-entity generation.
core/item/src/test/kotlin/de/davis/keygo/core/item/data/mapper/ItemMapperTest.kt	Tests matchedTag mapping.
core/item/src/test/kotlin/de/davis/keygo/core/item/data/mapper/DomainMapperTest.kt	Updates tests for domain-info entity mapping signature change.

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