feat: render every preview under the five conditions a screen has to survive

Phase 8, item three. The tree had 51 previews and every one of them rendered one
thing: a light theme, at whatever width the preview pane happened to be, at 100%
text. That is the only condition under which this app has never had a defect.

`@ConformancePreviews` replaces the bare `@Preview` at all 53 sites -- the two
outside `ui/` included -- and renders each under five: light, dark, 200% text,
compact 400dp, expanded 1000dp. `@Preview` is `@Repeatable`, so this is one
annotation rather than five copied onto every preview and drifting apart. Each of
the four new conditions is where a defect in this app has actually been: a colour
that only fails in dark, a fixed-height container that clips at 200%, a layout
that stretches because nothing held it, a row that reflows badly at phone width.

It also gives phase 6 the check it could not make. "Every screen renders correctly
at 400dp, 700dp, 1000dp, 1400dp and 1800dp" was verified structurally -- the
measure applied at every root and asserted at those widths -- but never looked at
per screen. Two of those widths are now one click away on every screen in the app.

**High contrast is deliberately not in the annotation**, and the argument is worth
stating because the omission looks like a gap. Contrast is a property of the
*scheme*, not of a screen: the app declares six, `ColorSchemeContrastTest`
measures every pair in all six, and a screen right in the default scheme is right
in the high-contrast one by construction. Per-screen high-contrast previews would
be 51 more renders of something already proved -- and there is no `@Preview`
parameter for it in any case, since it needs `TorchTheme(contrast = …)` in the
body.

`ThemeGallery` covers them instead, once, over components rather than screens: all
six schemes side by side, with body copy on surface, a card holding a list item --
the arrangement that rendered a headline at 1.00:1 before phase 3 -- and the three
button emphases. `dynamicColor = false` on purpose, or an android 12+ preview
paints all six columns from the wallpaper and the gallery shows nothing. It is the
only place the medium and high contrast schemes can be seen at all: in the app
they are reachable only through a platform setting, and on android only with
dynamic colour off.

99 lines changed across 50 files, all of them one annotation and its import.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

composeApp/src/commonMain/kotlin/press/mantra/compose/database/model/Profile.kt

@@ -13,7 +13,6 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.room3.Entity
 import androidx.room3.ForeignKey
@@ -27,6 +26,7 @@ import press.mantra.compose.ui.composable.widgets.profile.ProfileColor
 import press.mantra.compose.ui.theme.TorchTheme
 import kotlin.time.Clock
 import kotlin.time.Instant
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @Entity(
     foreignKeys = [
@@ -170,7 +170,7 @@ data class Profile(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 fun ProfileRenderAsListItemPreview() {
     val profile = Profile(

composeApp/src/commonMain/kotlin/press/mantra/compose/database/model/intermdiate/LocalQuotedNostrEvent.kt

@@ -11,7 +11,6 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.room3.Embedded
 import androidx.room3.Relation
@@ -23,6 +22,7 @@ import press.mantra.compose.database.model.QuotedRelation
 import press.mantra.compose.ui.composable.widgets.content.RichContent
 import press.mantra.compose.ui.composable.widgets.profile.ProfileAvatar
 import press.mantra.compose.ui.theme.TorchTheme
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 data class LocalQuotedNostrEvent(
     @Embedded val quotedRelation: press.mantra.compose.database.model.QuotedRelation,
@@ -110,7 +110,7 @@ data class LocalQuotedNostrEvent(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun LocalQuotedNostrEventPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/ActiveProfileScreen.kt

@@ -34,7 +34,6 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import press.mantra.compose.database.model.NostrEvent
@@ -71,6 +70,7 @@ import androidx.compose.material3.FilledTonalButton
 import androidx.compose.material3.ButtonDefaults
 import press.mantra.compose.ui.theme.readableContent
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class, ExperimentalMaterial3Api::class)
 @Composable
@@ -389,7 +389,7 @@ fun ActiveProfileScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun UnannouncedProfileScreenPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/AddArtifactScreen.kt

@@ -49,7 +49,6 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.semantics.disabled
 import androidx.compose.ui.semantics.semantics
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import press.mantra.compose.database.model.ChatRoom
@@ -87,6 +86,7 @@ import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class, ExperimentalMaterial3Api::class, ExperimentalLayoutApi::class)
 @Composable
@@ -402,7 +402,7 @@ fun AddArtifactScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun AddArtifactScreenPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/AddChapterScreen.kt

@@ -34,7 +34,6 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.semantics.disabled
 import androidx.compose.ui.semantics.semantics
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
@@ -68,6 +67,7 @@ import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
@@ -310,7 +310,7 @@ fun AddChapterScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun AddChapterScreenPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/AddDialectScreen.kt

@@ -39,7 +39,6 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.semantics.disabled
 import androidx.compose.ui.semantics.semantics
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
@@ -71,6 +70,7 @@ import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class, ExperimentalMaterial3Api::class)
 @Composable
@@ -337,7 +337,7 @@ fun AddDialectScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun AddDialectScreenPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/AddMemberToChatRoomConfirmationScreen.kt

@@ -23,7 +23,6 @@ import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import press.mantra.compose.database.model.ChatRoom
@@ -50,6 +49,7 @@ import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class, ExperimentalMaterial3Api::class)
 @Composable
@@ -214,7 +214,7 @@ fun AddMemberToChatRoomConfirmationScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun ChatRoomDetailScreenPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/AddTranslationArtifactVersionScreen.kt

@@ -37,7 +37,6 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.semantics.disabled
 import androidx.compose.ui.semantics.semantics
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
@@ -69,6 +68,7 @@ import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3Api::class, ExperimentalLayoutApi::class)
 @Composable
@@ -314,7 +314,7 @@ fun AddTranslationArtifactVersionScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun AddTranslationArtifactVersionScreenPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/ArtifactDetailScreen.kt

@@ -32,7 +32,6 @@ import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
@@ -68,6 +67,7 @@ import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
@@ -330,7 +330,7 @@ fun ArtifactDetailScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun ArtifactDetailScreenPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/ChapterDetailScreen.kt

@@ -28,7 +28,6 @@ import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
@@ -52,6 +51,7 @@ import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
@@ -196,7 +196,7 @@ fun ChapterDetailScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun ChapterDetailScreenPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/ChatRoomCreationScreen.kt

@@ -22,7 +22,6 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.input.KeyboardType
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import press.mantra.compose.ui.composable.navigation.routes.Route
@@ -41,6 +40,7 @@ import mantra.composeapp.generated.resources.what_will_be_discussed_in_this_chat
 import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @Composable
 fun ChatRoomCreationScreen(
@@ -172,7 +172,7 @@ fun ChatRoomCreationScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun LoadingScreenPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/ChatRoomDetailScreen.kt

@@ -43,7 +43,6 @@ import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import press.mantra.compose.database.model.ChatRoom
@@ -96,6 +95,7 @@ import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class, ExperimentalMaterial3Api::class)
 @Composable
@@ -740,7 +740,7 @@ private fun ReindexMarmotGroupEventsButton(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun ChatRoomMessagingScreenPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/ChatRoomMessagingScreen.kt

@@ -38,7 +38,6 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import press.mantra.compose.database.model.ChatRoom
@@ -71,6 +70,7 @@ import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class, ExperimentalMaterial3Api::class)
 @Composable
@@ -459,7 +459,7 @@ fun ChatRoomMessagingScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun ChatRoomMessagingScreenPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/CreateProfileScreen.kt

@@ -29,7 +29,6 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.text.input.KeyboardType
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import press.mantra.compose.repository.MarmotRepository
@@ -62,6 +61,7 @@ import mantra.composeapp.generated.resources.you_will_be_in_full_control_of_this
 import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class)
 @Composable
@@ -393,7 +393,7 @@ fun CreateProfileScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 fun CreateAccountScreenPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/DkgRitualScreen.kt

@@ -46,7 +46,6 @@ import androidx.compose.ui.text.buildAnnotatedString
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.text.withStyle
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.platform.LocalClipboardManager
 import androidx.compose.ui.text.AnnotatedString
 import androidx.compose.ui.text.font.FontFamily
@@ -103,6 +102,7 @@ import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 /**
  * The shared-key ceremony: a ChillDKG ritual run across the group's NIP-17
@@ -682,7 +682,7 @@ private fun QuorumStepper(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun DkgRitualScreenPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/FrostSigningScreen.kt

@@ -39,7 +39,6 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.vitorpamplona.quartz.nip01Core.core.Event
@@ -72,6 +71,7 @@ import mantra.composeapp.generated.resources.events_signed_together
 import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 /**
  * One signing session, and the member's decision about it.
@@ -407,7 +407,7 @@ private fun statusOf(session: FrostSigningSession): String = when (session.stage
     FrostSigningStage.FAILED -> "Abandoned. Nothing was signed, and it is safe to ask again."
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun FrostSigningScreenPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/HomeScreen.kt

@@ -37,7 +37,6 @@ import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.testTag
 import androidx.compose.ui.text.style.TextOverflow
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import press.mantra.compose.database.model.NostrEvent
@@ -75,6 +74,7 @@ import press.mantra.compose.ui.theme.listPaneWidthFor
 import press.mantra.compose.ui.theme.readableContent
 import mantra.composeapp.generated.resources.pick_a_conversation_to_read_it_here
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3Api::class, ExperimentalMaterial3ExpressiveApi::class)
 @Composable
@@ -344,7 +344,7 @@ fun HomeScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun HomeScreenPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/ImplementationPendingScreen.kt

@@ -11,7 +11,6 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import press.mantra.compose.ui.theme.spacing
 import mantra.composeapp.generated.resources.Res
@@ -20,6 +19,7 @@ import mantra.composeapp.generated.resources.functionality_coming_soon_2
 import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @Composable
 fun ImplementationPendingScreen(
@@ -44,7 +44,7 @@ fun ImplementationPendingScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun ImplementationPendingScreenPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/KeyPackageManagementScreen.kt

@@ -32,7 +32,6 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextOverflow
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import press.mantra.compose.database.model.MarmotKeyPackageBundle
@@ -60,6 +59,7 @@ import mantra.composeapp.generated.resources.key_package_published
 import mantra.composeapp.generated.resources.key_package_rotated
 import press.mantra.compose.ui.theme.readableContent
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class, ExperimentalMaterial3Api::class)
 @Composable
@@ -243,7 +243,7 @@ fun KeyPackageManagementScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun UnannouncedProfileScreenPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/LandingScreen.kt

@@ -17,7 +17,6 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import press.mantra.compose.ui.theme.spacing
 import mantra.composeapp.generated.resources.Res
@@ -32,6 +31,7 @@ import mantra.composeapp.generated.resources.sign_in_to_torch_via_nsec_or_remote
 import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @Composable
 fun LandingScreen(
@@ -112,7 +112,7 @@ fun LandingScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun LandingScreenPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/LoadingScreen.kt

@@ -7,10 +7,10 @@ import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Surface
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @Composable
 fun LoadingScreen(
@@ -28,7 +28,7 @@ fun LoadingScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun LoadingScreenPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/NostrEventDetailScreen.kt

@@ -13,7 +13,6 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import press.mantra.compose.database.model.NostrEvent
@@ -43,6 +42,7 @@ import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
@@ -146,7 +146,7 @@ fun NostrEventDetailScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun NostrEventDetailScreenPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/ProposalListScreen.kt

@@ -37,7 +37,6 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
@@ -66,6 +65,7 @@ import mantra.composeapp.generated.resources.of_them_could_not_be_read
 import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 /**
  * Everything the group has asked its shared key to sign.
@@ -404,7 +404,7 @@ private fun statusOf(proposal: ProposalListUIState.Proposal): String {
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun ProposalListScreenPreview() {
     val session = FrostSigningSession(

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/SearchMemberToAddToChatRoomScreen.kt

@@ -24,7 +24,6 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import press.mantra.compose.database.model.ChatRoom
@@ -50,6 +49,7 @@ import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class, ExperimentalMaterial3Api::class)
 @Composable
@@ -223,7 +223,7 @@ fun SearchMemberToAddToChatRoomScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun ChatRoomDetailScreenPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/SearchResultScreen.kt

@@ -46,7 +46,6 @@ import androidx.compose.ui.semantics.semantics
 import androidx.compose.ui.semantics.traversalIndex
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import press.mantra.compose.ui.composable.widgets.feed.ListView
@@ -66,6 +65,7 @@ import press.mantra.compose.ui.composable.widgets.ErrorState
 import press.mantra.compose.ui.composable.widgets.EmptyState
 import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3Api::class, ExperimentalMaterial3ExpressiveApi::class)
 @Composable
@@ -281,7 +281,7 @@ fun SearchResultScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun SearchResultScreenPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/SearchScreen.kt

@@ -49,7 +49,6 @@ import androidx.compose.ui.semantics.semantics
 import androidx.compose.ui.semantics.traversalIndex
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import press.mantra.compose.repository.NostrRepository
@@ -72,6 +71,7 @@ import mantra.composeapp.generated.resources.search_hashtags
 import mantra.composeapp.generated.resources.trending_notes_functionality_coming_soon_in
 import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3Api::class, ExperimentalMaterial3ExpressiveApi::class)
 @Composable
@@ -423,7 +423,7 @@ fun SearchScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun SearchScreenPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/SelectChatRoomMembersScreen.kt

@@ -30,7 +30,6 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import press.mantra.compose.database.model.Profile
@@ -57,6 +56,7 @@ import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 /**
  * Second step of group creation: pick who is in the group.
@@ -280,7 +280,7 @@ fun SelectChatRoomMembersScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun SelectChatRoomMembersScreenPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/SelectChatRoomTypeScreen.kt

@@ -38,7 +38,6 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import press.mantra.compose.database.model.Profile
@@ -74,6 +73,7 @@ import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 /**
  * Last step of group creation: convenient (one admin) or robust (everyone
@@ -462,7 +462,7 @@ private fun QuorumPicker(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun SelectChatRoomTypeScreenPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/ShareProfileScreen.kt

@@ -29,7 +29,6 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalClipboardManager
 import androidx.compose.ui.text.buildAnnotatedString
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import press.mantra.compose.database.model.NostrEvent
@@ -56,6 +55,7 @@ import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class, ExperimentalMaterial3Api::class)
 @Composable
@@ -227,7 +227,7 @@ fun ShareProfileScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun UnannouncedProfileScreenPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/SignInScreen.kt

@@ -26,7 +26,6 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.input.ImeAction
 import androidx.compose.ui.text.input.KeyboardType
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.vitorpamplona.quartz.nip19Bech32.entities.NPub
@@ -47,6 +46,7 @@ import mantra.composeapp.generated.resources.this_will_give_you_write_access_to_
 import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class)
 @Composable
@@ -273,7 +273,7 @@ fun SignInToProfileScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun SignInToProfileScreenPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/SocialPreconditionScreen.kt

@@ -20,7 +20,6 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import press.mantra.compose.ui.theme.spacing
 import mantra.composeapp.generated.resources.Res
@@ -34,6 +33,7 @@ import mantra.composeapp.generated.resources.who_will_you_be_passing_the_aux_to
 import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @Composable
 fun SocialPreconditionScreen(
@@ -124,7 +124,7 @@ fun SocialPreconditionScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun SocialPreconditionScreenPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/TranslateChunkScreen.kt

@@ -36,7 +36,6 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.semantics.disabled
 import androidx.compose.ui.semantics.semantics
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
@@ -66,6 +65,7 @@ import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
@@ -267,7 +267,7 @@ fun TranslateChunkScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun TranslateChunkScreenPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/TranslationArtifactVersionDetailScreen.kt

@@ -30,7 +30,6 @@ import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
@@ -61,6 +60,7 @@ import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
@@ -284,7 +284,7 @@ fun TranslationArtifactVersionDetailScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun TranslationArtifactVersionDetailScreenPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/TranslationChapterScreen.kt

@@ -34,7 +34,6 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
@@ -56,6 +55,7 @@ import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
 import press.mantra.compose.ui.composable.widgets.ScreenStateTransition
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
@@ -242,7 +242,7 @@ private fun TableRow(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun TranslationChapterScreenPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/UnannouncedProfileScreen.kt

@@ -15,7 +15,6 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import press.mantra.compose.ui.theme.spacing
 import mantra.composeapp.generated.resources.Res
@@ -25,6 +24,7 @@ import mantra.composeapp.generated.resources.torch_will_be_broadcast_what_you_pu
 import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class)
 @Composable
@@ -76,7 +76,7 @@ fun UnannouncedProfileScreen() {
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun UnannouncedProfileScreenPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/UnindexedProfileScreen.kt

@@ -15,7 +15,6 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import press.mantra.compose.ui.theme.spacing
 import mantra.composeapp.generated.resources.Res
@@ -25,6 +24,7 @@ import mantra.composeapp.generated.resources.everything_is_cryptographical_sound
 import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class)
 @Composable
@@ -76,7 +76,7 @@ fun UnindexedProfileScreen() {
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun UnannouncedProfileScreenPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/UnqueuedProfileScreen.kt

@@ -15,7 +15,6 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import press.mantra.compose.ui.theme.spacing
 import mantra.composeapp.generated.resources.Res
@@ -25,6 +24,7 @@ import mantra.composeapp.generated.resources.everything_is_cryptographical_sound
 import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class)
 @Composable
@@ -76,7 +76,7 @@ fun UnqueuedProfileScreen() {
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun UnannouncedProfileScreenPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/UnqueuedProfileSynchronizationScreen.kt

@@ -16,7 +16,6 @@ import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import press.mantra.compose.ui.theme.spacing
@@ -27,6 +26,7 @@ import mantra.composeapp.generated.resources.we_are_searching_the_internet_to_fi
 import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class)
 @Composable
@@ -88,7 +88,7 @@ fun UnqueuedProfileSynchronizationScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun UnqueuedProfileSynchronizationScreenPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/UnsignedProfileScreen.kt

@@ -15,7 +15,6 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import press.mantra.compose.ui.theme.spacing
 import mantra.composeapp.generated.resources.Res
@@ -25,6 +24,7 @@ import mantra.composeapp.generated.resources.your_profile_is_almost_ready_just_g
 import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class)
 @Composable
@@ -70,7 +70,7 @@ fun UnsignedProfileScreen() {
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun UnsignedProfileScreenPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/UnsyncedProfileScreen.kt

@@ -15,7 +15,6 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import press.mantra.compose.ui.theme.spacing
 import mantra.composeapp.generated.resources.Res
@@ -25,6 +24,7 @@ import mantra.composeapp.generated.resources.we_are_searching_the_internet_to_fi
 import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class)
 @Composable
@@ -72,7 +72,7 @@ fun UnsyncedProfileScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun UnsyncedProfileScreenPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/WriteNewNoteScreen.kt

@@ -37,7 +37,6 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.SpanStyle
 import androidx.compose.ui.text.input.KeyboardType
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import press.mantra.compose.extensions.toFormattedTimeAndDateString
@@ -59,6 +58,7 @@ import mantra.composeapp.generated.resources.replying_to
 import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class, ExperimentalFoundationApi::class)
 @Composable
@@ -465,7 +465,7 @@ fun WriteNewNoteScreen(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun WriteNewNoteScreenPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/widgets/LoadingDataIndicator.kt

@@ -12,9 +12,9 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import press.mantra.compose.ui.theme.spacing
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 /**
  * The app's one loading state, used at 41 call sites.
@@ -66,7 +66,7 @@ fun LoadingDataIndicator(
 }
 
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun TransferHistoryScreenPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/widgets/content/QuotedNote.kt

@@ -17,13 +17,13 @@ import androidx.compose.material3.minimumInteractiveComponentSize
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
 import press.mantra.compose.ui.theme.spacing
 import mantra.composeapp.generated.resources.Res
 import org.jetbrains.compose.resources.stringResource
 import mantra.composeapp.generated.resources.loading_note
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @Composable
 fun QuotedNote(
@@ -117,7 +117,7 @@ fun QuotedNote(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun QuotedNotePreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/widgets/content/RichContent.kt

@@ -26,7 +26,6 @@ import androidx.compose.ui.text.buildAnnotatedString
 import androidx.compose.ui.text.style.TextDecoration
 import androidx.compose.ui.text.withLink
 import androidx.compose.ui.text.withStyle
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import co.touchlab.kermit.Logger
 import coil3.compose.AsyncImage
@@ -36,6 +35,7 @@ import mantra.composeapp.generated.resources.Res
 import org.jetbrains.compose.resources.stringResource
 import mantra.composeapp.generated.resources.nostr
 import mantra.composeapp.generated.resources.nostr_2
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @Composable
 fun RichContent(
@@ -398,7 +398,7 @@ fun RichContent(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun RichContentPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/widgets/detail/MetadataEventDetail.kt

@@ -40,7 +40,6 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.input.nestedscroll.nestedScroll
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import press.mantra.compose.database.model.NostrEvent
@@ -70,6 +69,7 @@ import mantra.composeapp.generated.resources.unfollow
 import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3Api::class, ExperimentalMaterial3ExpressiveApi::class)
 @Composable
@@ -322,7 +322,7 @@ fun MetadataEventDetail(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun MetadataEventEventDetailPreview() {
 

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/widgets/detail/TextNoteEventDetail.kt

@@ -42,7 +42,6 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.input.nestedscroll.nestedScroll
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import press.mantra.compose.extensions.toFormattedTimeAndDateString
@@ -59,6 +58,7 @@ import press.mantra.compose.ui.composable.widgets.ErrorState
 import androidx.compose.material3.SnackbarHost
 import press.mantra.compose.ui.composable.widgets.LocalSnackbarHostState
 import press.mantra.compose.ui.theme.readableContent
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3Api::class, ExperimentalMaterial3ExpressiveApi::class)
 @Composable
@@ -389,7 +389,7 @@ fun TextNoteEventDetail(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun TextNoteEventDetailPreview() {
 

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/widgets/dialogs/StartDirectMessageToNpubOrNip05Dialog.kt

@@ -30,7 +30,6 @@ import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.window.Dialog
 import press.mantra.compose.extensions.bech32ToHexOrNull
@@ -51,6 +50,7 @@ import org.jetbrains.compose.resources.stringResource
 import mantra.composeapp.generated.resources.input_npub_or_nip05
 import mantra.composeapp.generated.resources.start_chat
 import mantra.composeapp.generated.resources.start_chat_via_npub_or_nip05
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @Composable
 fun StartDirectMessageToNpubOrNip05Dialog(
@@ -187,7 +187,7 @@ fun StartDirectMessageToNpubOrNip05Dialog(
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun StartDirectMessageToNpubOrNip05DialogPreview() {
     TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/widgets/feed/EventListView.kt

@@ -17,7 +17,6 @@ import androidx.compose.material3.minimumInteractiveComponentSize
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import press.mantra.compose.extensions.toFormattedTimeAndDateString
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
@@ -30,6 +29,7 @@ import org.jetbrains.compose.resources.stringResource
 import mantra.composeapp.generated.resources.loading_author_information_2
 import mantra.composeapp.generated.resources.malformed_note
 import mantra.composeapp.generated.resources.reposted
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @Composable
 fun press.mantra.compose.database.model.intermdiate.LocalNostrEvent.ListView(
@@ -126,7 +126,7 @@ fun press.mantra.compose.database.model.intermdiate.LocalNostrEvent.ListView(
 }
 
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun EventListViewRepostedPreview() {
     press.mantra.compose.ui.theme.TorchTheme {
@@ -177,7 +177,7 @@ private fun EventListViewRepostedPreview() {
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun EventListViewInReplyPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/widgets/feed/TextNoteFeedItem.kt

@@ -21,7 +21,6 @@ import androidx.compose.runtime.mutableStateOf
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import press.mantra.compose.extensions.toFormattedTimeAndDateString
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
@@ -30,6 +29,7 @@ import mantra.composeapp.generated.resources.Res
 import org.jetbrains.compose.resources.stringResource
 import mantra.composeapp.generated.resources.loading_author_information
 import mantra.composeapp.generated.resources.loading_information
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @OptIn(ExperimentalMaterial3ExpressiveApi::class)
 @Composable
@@ -184,7 +184,7 @@ internal fun TextNoteFeedItem(
 
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun TextNoteFeedItemPreview() {
     press.mantra.compose.ui.theme.TorchTheme {
@@ -215,7 +215,7 @@ private fun TextNoteFeedItemPreview() {
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun TextNoteFeedItemInReplyToPreview() {
     press.mantra.compose.ui.theme.TorchTheme {
@@ -269,7 +269,7 @@ private fun TextNoteFeedItemInReplyToPreview() {
     }
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 private fun TextNoteFeedItemQuoteNostrEventPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/composable/widgets/profile/ProfileAvatar.kt

@@ -17,11 +17,11 @@ import androidx.compose.ui.graphics.ColorFilter
 import androidx.compose.ui.graphics.Shape
 import androidx.compose.ui.graphics.vector.rememberVectorPainter
 import androidx.compose.ui.layout.ContentScale
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.dp
 import coil3.compose.AsyncImage
 import press.mantra.compose.ui.theme.spacing
+import press.mantra.compose.ui.theme.ConformancePreviews
 
 @Composable
 fun ProfileAvatar(
@@ -90,7 +90,7 @@ fun ProfileAvatar(
     // TODO: Show cards...
 }
 
-@Preview
+@ConformancePreviews
 @Composable
 fun ProfileAvatarPreview() {
     press.mantra.compose.ui.theme.TorchTheme {

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/theme/ConformancePreviews.kt

@@ -0,0 +1,43 @@
+package press.mantra.compose.ui.theme
+
+import androidx.compose.ui.tooling.preview.Preview
+
+/**
+ * The five conditions every screen has to survive, as one annotation.
+ *
+ * A screen renders under a light theme on a phone because that is the only way anybody
+ * ever looks at it. The other four are where this app's defects have actually been: a
+ * colour that only fails in dark, a fixed-height container that clips at 200% text, a
+ * layout that stretches to 1000dp because nothing ever held it, a row that reflows badly
+ * at 400dp. Each of those is invisible in a diff and obvious in a render.
+ *
+ * Replaces a bare `@Preview` at the 51 preview sites in the tree. `@Preview` is
+ * `@Repeatable`, so this is five renders from one annotation rather than five annotations
+ * copied onto every preview and drifting apart.
+ *
+ * **High contrast is deliberately not here**, and that is an argument rather than an
+ * omission. Contrast is a property of the *scheme*, not of a screen: the app declares six
+ * schemes and `ColorSchemeContrastTest` measures every pair in all six, so a screen that
+ * is right in the default scheme is right in the high-contrast one by construction. A
+ * per-screen high-contrast preview would be 51 more renders checking something already
+ * proved, and there is no `@Preview` parameter for it anyway -- it needs
+ * `TorchTheme(contrast = …)` in the body. [ThemeGallery] covers the schemes once, over
+ * the components rather than over the screens.
+ *
+ * @see ThemeGallery
+ */
+@Preview(name = "Light", group = "conformance")
+@Preview(name = "Dark", group = "conformance", uiMode = UiModeNightYes)
+@Preview(name = "200% text", group = "conformance", fontScale = 2f)
+@Preview(name = "Compact 400dp", group = "conformance", widthDp = 400, heightDp = 800)
+@Preview(name = "Expanded 1000dp", group = "conformance", widthDp = 1000, heightDp = 800)
+annotation class ConformancePreviews
+
+/**
+ * `Configuration.UI_MODE_NIGHT_YES or UI_MODE_TYPE_NORMAL`.
+ *
+ * Written as a literal because `android.content.res.Configuration` is not reachable from
+ * common code, and as a named constant rather than an inline `0x21` because a bare hex
+ * number in a preview annotation says nothing about which of the two flags it carries.
+ */
+private const val UiModeNightYes = 0x21

composeApp/src/commonMain/kotlin/press/mantra/compose/ui/theme/ThemeGallery.kt

@@ -0,0 +1,112 @@
+package press.mantra.compose.ui.theme
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Star
+import androidx.compose.material3.Button
+import androidx.compose.material3.Card
+import androidx.compose.material3.FilledTonalButton
+import androidx.compose.material3.HorizontalDivider
+import androidx.compose.material3.Icon
+import androidx.compose.material3.ListItem
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.tooling.preview.Preview
+import press.mantra.compose.ui.composable.widgets.Decorative
+
+/**
+ * All six schemes, side by side, over the components that carry text.
+ *
+ * The one place the medium and high contrast schemes can be looked at. They are reachable
+ * in the app only through a platform setting -- and on android 12 and up, only with
+ * dynamic colour switched off -- so without this they are values in `Color.kt` that
+ * nobody has seen.
+ *
+ * Over components rather than over screens, and that is the point of it. Contrast is a
+ * property of the scheme: `ColorSchemeContrastTest` measures every pair in all six, so
+ * what a render adds is not proof but judgement -- whether `secondaryContainer` still
+ * reads as a container in high contrast, whether the outline is doing its job. Six renders
+ * of this answer that for the whole app; six renders of each of 51 screens would answer it
+ * 51 times.
+ */
+@Preview(name = "Six schemes", group = "schemes", widthDp = 1200, heightDp = 900)
+@Composable
+private fun ThemeGalleryPreview() {
+    // One render holding all six, not six renders. The contrast step is a `TorchTheme`
+    // parameter and no preview annotation can set it, so the combinations have to be laid
+    // out in the body -- and laying them out side by side is what makes them comparable,
+    // which is the only reason to look at them at all.
+    Column {
+        listOf(false, true).forEach { dark ->
+            Row(modifier = Modifier.fillMaxWidth()) {
+                ThemeContrast.entries.forEach { contrast ->
+                    Column(modifier = Modifier.weight(1f)) {
+                        ThemeGallery(darkTheme = dark, contrast = contrast)
+                    }
+                }
+            }
+        }
+    }
+}
+
+/**
+ * One scheme's worth of components. Public so a screen's own preview can borrow it.
+ *
+ * `dynamicColor = false` on purpose: with it left on, an android 12+ preview renders the
+ * wallpaper palette and every column here comes out identical. That is correct app
+ * behaviour and useless as a gallery of the six schemes.
+ */
+@Composable
+fun ThemeGallery(darkTheme: Boolean, contrast: ThemeContrast) {
+    TorchTheme(darkTheme = darkTheme, contrast = contrast, dynamicColor = false) {
+        Surface {
+            Column(
+                modifier = Modifier.padding(MaterialTheme.spacing.compactPadding),
+                verticalArrangement = Arrangement.spacedBy(MaterialTheme.spacing.relatedGap),
+            ) {
+                Text(
+                    text = "${if (darkTheme) "Dark" else "Light"} · ${contrast.name}",
+                    style = MaterialTheme.typography.labelSmall,
+                )
+
+                // Body copy on the plain surface: the pairing every screen uses most, and
+                // the one that has to hold 4.5:1.
+                Text("Body on surface", style = MaterialTheme.typography.bodyMedium)
+                Text(
+                    text = "Secondary text",
+                    style = MaterialTheme.typography.bodySmall,
+                    color = MaterialTheme.colorScheme.onSurfaceVariant,
+                )
+
+                HorizontalDivider()
+
+                // A card with a container role and a list item inside it -- the exact
+                // arrangement that rendered a headline at 1.00:1 before phase 3, because
+                // ListItem does not read LocalContentColor.
+                Card {
+                    ListItem(
+                        headlineContent = { Text("Awaiting your signature") },
+                        supportingContent = { Text("Two events") },
+                        leadingContent = { Icon(Icons.Default.Star, contentDescription = Decorative) },
+                    )
+                }
+
+                // The three button emphases, which is where the extended brand colours and
+                // the error role are seen.
+                Button(onClick = {}) { Text("Primary") }
+                FilledTonalButton(onClick = {}) { Text("Tonal") }
+                TextButton(onClick = {}) {
+                    Text("Sign out", color = MaterialTheme.colorScheme.error)
+                }
+            }
+        }
+    }
+}