UI and feature update

[pawcoding]

Some visual changes and new small features I wanted to add

[Copilot]

Pull request overview

This PR updates the Android UI and introduces a “favorites” feature for cards, along with various UX feedback changes (moving from Snackbars to Toasts) and some icon/resource updates.

Changes:

• Add is_favorite support end-to-end (DB schema + migration, ViewModel toggle, UI filtering/sorting, new “Favorites” label chip).
• Update UI visuals (new card layout styling, new vector icons, delete icon swap) and add multiple new user-facing strings (EN/DE).
• Replace app-wide SnackbarService usage with Toast notifications and adjust barcode scan error handling.

Reviewed changes

Copilot reviewed 28 out of 28 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
renovate.json	Increases Renovate minimum release age to reduce churn from very recent releases.
app/src/main/res/values/strings.xml	Adds strings for favorites, deletion feedback, shortcut feedback, and updates scan error messaging.
app/src/main/res/values-de/strings.xml	German translations for new strings and updated scan error messaging.
app/src/main/res/drawable/qr_code_solid.xml	Adds solid QR icon used in card UI.
app/src/main/res/drawable/heart_plus_solid.xml	Adds “add favorite” icon for option sheet action.
app/src/main/res/drawable/heart_minus_solid.xml	Adds “remove favorite” icon for option sheet action.
app/src/main/res/drawable/favorite.xml	Adds outline favorite icon for chips/UI.
app/src/main/res/drawable/favorite_solid.xml	Adds solid favorite icon for chips/UI.
app/src/main/res/drawable/delete_solid.xml	Adds replacement solid delete icon.
app/src/main/res/drawable/delete_forever_solid.xml	Removes old delete icon asset referenced previously.
app/src/main/res/drawable/barcode_solid.xml	Adds solid barcode icon used in card UI.
app/src/main/java/de/pawcode/cardstore/ui/viewmodels/CardViewModel.kt	Adds toggleFavorite() and supports updating isFavorite via repository.
app/src/main/java/de/pawcode/cardstore/ui/utils/BarcodeScanner.kt	Reworks scan error flow to copy details to clipboard + Toast feedback (replacing snackbar copy action).
app/src/main/java/de/pawcode/cardstore/ui/sheets/OptionsSheet.kt	Updates preview to use the new delete icon resource.
app/src/main/java/de/pawcode/cardstore/ui/screens/LabelListScreen.kt	Adds delete confirmation Toast and updates delete icon usage.
app/src/main/java/de/pawcode/cardstore/ui/screens/EditLabelScreen.kt	Replaces snackbar feedback after save with Toast.
app/src/main/java/de/pawcode/cardstore/ui/screens/EditCardScreen.kt	Replaces snackbar feedback after save with Toast.
app/src/main/java/de/pawcode/cardstore/ui/screens/CardListScreen.kt	Adds favorites actions/filtering, sorting favorites to top, and multiple Toast feedback paths.
app/src/main/java/de/pawcode/cardstore/ui/screens/AboutScreen.kt	Adds Toast feedback for enabling biometrics.
app/src/main/java/de/pawcode/cardstore/ui/components/LabelsListComponent.kt	Adds a Favorites filter chip and sentinel favorites label ID.
app/src/main/java/de/pawcode/cardstore/ui/components/EditCardForm.kt	Updates leading icon behavior for label chips (check vs add).
app/src/main/java/de/pawcode/cardstore/ui/components/CardComponent.kt	Updates card UI layout; adds favorites indicator and barcode type/icon display.
app/src/main/java/de/pawcode/cardstore/ui/components/AddCardComponent.kt	Rounds card shape to match updated visual style.
app/src/main/java/de/pawcode/cardstore/ui/CardStore.kt	Removes Scaffold SnackbarHost integration now that SnackbarService is removed.
app/src/main/java/de/pawcode/cardstore/data/services/SnackbarService.kt	Deletes SnackbarService in favor of Toast-based feedback.
app/src/main/java/de/pawcode/cardstore/data/database/migrations/2026_07_26_ADD_FAVORITE_COLUMN.kt	Adds a Room migration for the new is_favorite column.
app/src/main/java/de/pawcode/cardstore/data/database/entities/CardEntity.kt	Adds isFavorite column mapping to the Card entity.
app/src/main/java/de/pawcode/cardstore/data/database/CardDatabase.kt	Bumps DB version and registers the migration.

Comments suppressed due to low confidence (1)

app/src/main/java/de/pawcode/cardstore/ui/screens/CardListScreen.kt:137

• toggleFavorite() launches work asynchronously, but the UI immediately shows a toast. If the update fails, the user still sees a success message. Consider running the toggle in a coroutine and awaiting completion before showing feedback.

    onToggleFavorite = { card ->
      viewModel.toggleFavorite(card)
      val message =
        if (card.isFavorite) context.getString(R.string.card_favorite_removed)
        else context.getString(R.string.card_favorite_added)