M12e: contract pass (pair invite kind, admin name in invite links, sync failed flag, rejection actor, device version name, template id, update check result, untouched accounts, D-027 re-stamp, PushEvent in :core:model, snackbar hosts)

Server: E-3 invite_kind; E-12 link ?from=<admin name>, E-4 passes it into kvitt://invite;
X-Kvitt-App-Version-Name stored in devices.app_version_name (migration 0003, schema 3);
OpenAPI and examples follow. Phone: :core:model, :core:fakes, :data, features and :app
updated together; goldens re-recorded for S-20 (version name) and new S-1/S-22 states.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TQd3pEP9UeN2uifbHknQ7B

android/feature/expense/src/main/kotlin/se/hagstedt/kvitt/feature/expense/ExpenseDetailScreen.kt

@@ -14,11 +14,13 @@ import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.SnackbarHostState
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.alpha
@@ -29,6 +31,7 @@ import androidx.hilt.lifecycle.viewmodel.compose.hiltViewModel
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import se.hagstedt.kvitt.design.KvittTheme
 import se.hagstedt.kvitt.core.design.R as DesignR
+import se.hagstedt.kvitt.design.component.KvittScaffold
 import se.hagstedt.kvitt.design.component.AmountStyle
 import se.hagstedt.kvitt.design.component.AmountTone
 import se.hagstedt.kvitt.design.component.BadgeKind
@@ -80,22 +83,23 @@ interface ExpenseDetailActions {
 
 /**
  * S-8, the expense detail with its timeline (design-spec §4 S-8; SPEC AC-8.11, AC-12.4, AC-12.5). [onEdit] opens S-7
- * in edit mode; [onDeleted] goes back with the snackbar text "Utgiften togs bort".
+ * in edit mode; [onDeleted] goes back, where "Utgiften togs bort" (`snackbar_expense_deleted`) is shown, as S-10 does.
+ * [snackbarHostState] is hosted in this screen, so `:app` can show a result snackbar here (D-071).
  */
 @Composable
 fun ExpenseDetailScreen(
     onBack: () -> Unit,
     onEdit: (ExpenseId) -> Unit,
-    onDeleted: (String) -> Unit,
+    onDeleted: () -> Unit,
     modifier: Modifier = Modifier,
+    snackbarHostState: SnackbarHostState = remember { SnackbarHostState() },
     viewModel: ExpenseDetailViewModel = hiltViewModel(),
 ) {
     val state by viewModel.state.collectAsStateWithLifecycle()
-    val deleted = stringResource(DesignR.string.snackbar_expense_deleted)
     LaunchedEffect(viewModel) {
-        viewModel.eventFlow.collect { event -> if (event == DetailEvent.Deleted) onDeleted(deleted) }
+        viewModel.eventFlow.collect { event -> if (event == DetailEvent.Deleted) onDeleted() }
     }
-    ExpenseDetailContent(state, viewModel, onBack, onEdit, modifier)
+    ExpenseDetailContent(state, viewModel, onBack, onEdit, modifier, snackbarHostState)
 }
 
 /** The stateless S-8 layout. */
@@ -106,10 +110,19 @@ fun ExpenseDetailContent(
     onBack: () -> Unit,
     onEdit: (ExpenseId) -> Unit,
     modifier: Modifier = Modifier,
+    snackbarHostState: SnackbarHostState? = null,
 ) {
+    // The scaffold only hosts the snackbar; the body keeps its own system-bar padding.
+    KvittScaffold(modifier.fillMaxSize(), snackbarHostState = snackbarHostState) { _ ->
+        DetailSurface(state, actions, onBack, onEdit)
+    }
+}
+
+@Composable
+private fun DetailSurface(state: ExpenseDetailUiState, actions: ExpenseDetailActions, onBack: () -> Unit, onEdit: (ExpenseId) -> Unit) {
     val detail = state.detail
     val me = state.me
-    Surface(modifier.fillMaxSize(), color = MaterialTheme.colorScheme.surface) {
+    Surface(Modifier.fillMaxSize(), color = MaterialTheme.colorScheme.surface) {
         if (me == null || state.loading) return@Surface
         ProvideHousehold(me, state.partner) {
             Column(Modifier.fillMaxSize().statusBarsPadding().navigationBarsPadding()) {

android/feature/expense/src/main/kotlin/se/hagstedt/kvitt/feature/expense/ExpenseEditorScreen.kt

@@ -1,6 +1,7 @@
 package se.hagstedt.kvitt.feature.expense
 
 import androidx.activity.compose.BackHandler
+import androidx.annotation.StringRes
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
@@ -123,28 +124,26 @@ interface ExpenseEditorActions {
 }
 
 /**
- * S-7, the full-screen expense editor (design-spec §4 S-7, §5). [onSaved] gets the saved id and the snackbar text for
- * the opener ("Utgiften sparades" / offline wording for a new expense, null after an edit: back to S-8 without one);
- * [onDeleted] gets "Utgiften togs bort" and goes back past S-8 to its opener.
+ * S-7, the full-screen expense editor (design-spec §4 S-7, §5). [onSaved] gets the saved id and the snackbar string
+ * resource for the opener (`snackbar_expense_saved` / `snackbar_expense_saved_offline` for a new expense, null after an
+ * edit: back to S-8 without one); [onDeleted] goes back past S-8 to its opener, which shows `snackbar_expense_deleted`.
+ * `:app` resolves the resource while the snackbar shows, as for S-9 and S-10.
  */
 @Composable
 fun ExpenseEditorScreen(
     onClose: () -> Unit,
-    onSaved: (ExpenseId, String?) -> Unit,
-    onDeleted: (String) -> Unit,
+    onSaved: (ExpenseId, Int?) -> Unit,
+    onDeleted: () -> Unit,
     modifier: Modifier = Modifier,
     viewModel: ExpenseEditorViewModel = hiltViewModel(),
 ) {
     val state by viewModel.state.collectAsStateWithLifecycle()
     val descriptionFocus = remember { FocusRequester() }
-    val saved = stringResource(DesignR.string.snackbar_expense_saved)
-    val savedOffline = stringResource(DesignR.string.snackbar_expense_saved_offline)
-    val deleted = stringResource(DesignR.string.snackbar_expense_deleted)
     LaunchedEffect(viewModel) {
         viewModel.eventFlow.collect { event ->
             when (event) {
-                is EditorEvent.Saved -> onSaved(event.id, if (!event.isNew) null else if (event.offline) savedOffline else saved)
-                EditorEvent.Deleted -> onDeleted(deleted)
+                is EditorEvent.Saved -> onSaved(event.id, savedSnackbar(event.isNew, event.offline))
+                EditorEvent.Deleted -> onDeleted()
                 EditorEvent.Closed -> onClose()
                 EditorEvent.FocusDescription -> descriptionFocus.requestFocus()
             }
@@ -155,6 +154,14 @@ fun ExpenseEditorScreen(
     ExpenseEditorContent(state, viewModel, modifier, descriptionFocus)
 }
 
+/** The snackbar after a save: none after an edit; for a new expense the online or offline wording. */
+@StringRes
+internal fun savedSnackbar(isNew: Boolean, offline: Boolean): Int? = when {
+    !isNew -> null
+    offline -> DesignR.string.snackbar_expense_saved_offline
+    else -> DesignR.string.snackbar_expense_saved
+}
+
 /** The stateless S-7 layout: app bar, scrolling fields, the keypad, and the overlay of [ExpenseEditorState.overlay]. */
 @Composable
 fun ExpenseEditorContent(