Add a new internal-only 'labs' setting screen.

app/src/main/java/org/thoughtcrime/securesms/components/settings/app/AppSettingsFragment.kt

@@ -109,6 +109,7 @@ class AppSettingsFragment : ComposeFragment(), Callbacks {
             is AppSettingsRoute.Payments -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_paymentsActivity)
             is AppSettingsRoute.HelpRoute.Settings -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_helpSettingsFragment)
             is AppSettingsRoute.Invite -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_inviteFragment)
+            is AppSettingsRoute.LabsRoute.Labs -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_labsSettingsFragment)
             is AppSettingsRoute.InternalRoute.Internal -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_internalSettingsFragment)
             is AppSettingsRoute.AccountRoute.ManageProfile -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_manageProfileActivity)
             is AppSettingsRoute.UsernameLinkRoute.UsernameLink -> findNavController().safeNavigate(R.id.action_appSettingsFragment_to_usernameLinkSettingsFragment)
@@ -531,9 +532,20 @@ private fun AppSettingsContent(
             Dividers.Default()
           }
 
+          item {
+            Rows.TextRow(
+              text = "Labs",
+              icon = painterResource(R.drawable.symbol_flash_24),
+              onClick = {
+                callbacks.navigate(AppSettingsRoute.LabsRoute.Labs)
+              }
+            )
+          }
+
           item {
             Rows.TextRow(
               text = stringResource(R.string.preferences__internal_preferences),
+              icon = painterResource(R.drawable.symbol_key_24),
               onClick = {
                 callbacks.navigate(AppSettingsRoute.InternalRoute.Internal)
               }

app/src/main/java/org/thoughtcrime/securesms/components/settings/app/labs/LabsSettingsEvents.kt

@@ -0,0 +1,11 @@
+/*
+ * Copyright 2025 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+package org.thoughtcrime.securesms.components.settings.app.labs
+
+sealed interface LabsSettingsEvents {
+  data class ToggleIndividualChatPlaintextExport(val enabled: Boolean) : LabsSettingsEvents
+  data class ToggleStoryArchive(val enabled: Boolean) : LabsSettingsEvents
+}

app/src/main/java/org/thoughtcrime/securesms/components/settings/app/labs/LabsSettingsFragment.kt

@@ -0,0 +1,111 @@
+/*
+ * Copyright 2025 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+package org.thoughtcrime.securesms.components.settings.app.labs
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.unit.dp
+import androidx.fragment.app.viewModels
+import androidx.navigation.fragment.findNavController
+import org.signal.core.ui.compose.ComposeFragment
+import org.signal.core.ui.compose.Rows
+import org.signal.core.ui.compose.Scaffolds
+import org.signal.core.ui.compose.SignalIcons
+import org.signal.core.ui.compose.horizontalGutters
+import org.signal.core.ui.compose.theme.SignalTheme
+import org.thoughtcrime.securesms.R
+
+class LabsSettingsFragment : ComposeFragment() {
+
+  private val viewModel: LabsSettingsViewModel by viewModels()
+
+  @Composable
+  override fun FragmentContent() {
+    val state by viewModel.state.collectAsState()
+
+    LabsSettingsContent(
+      state = state,
+      onEvent = viewModel::onEvent,
+      onNavigationClick = { findNavController().popBackStack() }
+    )
+  }
+}
+
+@Composable
+private fun LabsSettingsContent(
+  state: LabsSettingsState,
+  onEvent: (LabsSettingsEvents) -> Unit,
+  onNavigationClick: () -> Unit
+) {
+  Scaffolds.Settings(
+    title = "Labs",
+    navigationContentDescription = "Go back",
+    navigationIcon = SignalIcons.ArrowStart.imageVector,
+    onNavigationClick = onNavigationClick
+  ) { contentPadding ->
+    LazyColumn(
+      contentPadding = contentPadding
+    ) {
+      item {
+        Row(
+          modifier = Modifier
+            .fillMaxWidth()
+            .horizontalGutters()
+            .padding(vertical = 16.dp)
+            .background(
+              color = SignalTheme.colors.colorSurface2,
+              shape = RoundedCornerShape(12.dp)
+            )
+            .padding(16.dp)
+        ) {
+          Icon(
+            painter = painterResource(R.drawable.symbol_info_fill_24),
+            contentDescription = null,
+            tint = MaterialTheme.colorScheme.onSurfaceVariant,
+            modifier = Modifier.size(20.dp)
+          )
+          Text(
+            text = "These are internal-only pre-release features. They are all in various unfinished states. They may need more polish, finalized designs, or cross-client compatibility before they can be released.",
+            style = MaterialTheme.typography.bodyMedium,
+            color = MaterialTheme.colorScheme.onSurfaceVariant,
+            modifier = Modifier.padding(start = 12.dp)
+          )
+        }
+      }
+
+      item {
+        Rows.ToggleRow(
+          checked = state.individualChatPlaintextExport,
+          text = "Individual Chat Plaintext Export",
+          label = "Enable exporting individual chats as a collection of human-readable plaintext files. New entry in the three-dot menu in the chat screen.",
+          onCheckChanged = { onEvent(LabsSettingsEvents.ToggleIndividualChatPlaintextExport(it)) }
+        )
+      }
+
+      item {
+        Rows.ToggleRow(
+          checked = state.storyArchive,
+          text = "Story Archive",
+          label = "Keep your own stories for longer and view them later. A new button on the toolbar on the stories tab.",
+          onCheckChanged = { onEvent(LabsSettingsEvents.ToggleStoryArchive(it)) }
+        )
+      }
+    }
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/settings/app/labs/LabsSettingsState.kt

@@ -0,0 +1,14 @@
+/*
+ * Copyright 2025 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+package org.thoughtcrime.securesms.components.settings.app.labs
+
+import androidx.compose.runtime.Immutable
+
+@Immutable
+data class LabsSettingsState(
+  val individualChatPlaintextExport: Boolean = false,
+  val storyArchive: Boolean = false
+)

app/src/main/java/org/thoughtcrime/securesms/components/settings/app/labs/LabsSettingsViewModel.kt

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2025 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+package org.thoughtcrime.securesms.components.settings.app.labs
+
+import androidx.lifecycle.ViewModel
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import org.thoughtcrime.securesms.keyvalue.SignalStore
+
+class LabsSettingsViewModel : ViewModel() {
+
+  private val _state = MutableStateFlow(loadState())
+  val state: StateFlow<LabsSettingsState> = _state
+
+  fun onEvent(event: LabsSettingsEvents) {
+    when (event) {
+      is LabsSettingsEvents.ToggleIndividualChatPlaintextExport -> {
+        SignalStore.labs.individualChatPlaintextExport = event.enabled
+        _state.value = _state.value.copy(individualChatPlaintextExport = event.enabled)
+      }
+      is LabsSettingsEvents.ToggleStoryArchive -> {
+        SignalStore.labs.storyArchive = event.enabled
+        _state.value = _state.value.copy(storyArchive = event.enabled)
+      }
+    }
+  }
+
+  private fun loadState(): LabsSettingsState {
+    return LabsSettingsState(
+      individualChatPlaintextExport = SignalStore.labs.individualChatPlaintextExport,
+      storyArchive = SignalStore.labs.storyArchive
+    )
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/components/settings/app/routes/AppSettingsRoute.kt

@@ -114,6 +114,11 @@ sealed interface AppSettingsRoute : Parcelable {
     data object Featured : DonationsRoute
   }
 
+  @Parcelize
+  sealed interface LabsRoute : AppSettingsRoute {
+    data object Labs : LabsRoute
+  }
+
   @Parcelize
   sealed interface InternalRoute : AppSettingsRoute {
     data object Internal : InternalRoute