fix(ui): thread scaffold padding through Messages, DVMs, Search

Audit follow-up to the previous padding migration: four more
`DisappearingScaffold` consumers were still using the old
`HorizontalPager(contentPadding = it)` or `Modifier.padding(it)`
patterns, so their feeds didn't extend behind the chrome.

- Messages single-pane: `MessagesPager` no longer applies the scaffold
  padding to the pager's `contentPadding` (which shrinks pages); it
  threads it down to `ChatroomListFeedView` instead, which now accepts
  `scaffoldPadding` and applies it on its inner `LazyColumn` via
  `rememberMergedPadding(scaffoldPadding, FeedPadding)`.
- Messages two-pane: drops the outer `Modifier.padding(padding)
  .consumeWindowInsets(padding)` on the `TwoPane` and threads the
  padding through `ChatroomList` → `MessagesPager` →
  `ChatroomListFeedView`.
- `DvmContentDiscoveryScreen`: drops the wrapping `Column(Modifier
  .padding(paddingValues))` and threads the scaffold padding through
  `DvmContentDiscoveryScreen` → `ObserverContentDiscoveryResponse` →
  `PrepareViewContentDiscoveryModels` → `RenderNostrNIP90Content
  DiscoveryScreen` → `RenderFeedState`'s default `FeedLoaded`.
- `SearchScreen`: drops the wrapping
  `Column(Modifier.padding(it).consumeWindowInsets(it))` and turns the
  inbox-relay warning card into a `headerContent` slot rendered as the
  first item of the search-results `LazyColumn`. The list now also
  always exists (with the early `return` moved into the lazy-list
  builder via `return@LazyColumn`) so the header is visible even when
  no search is in progress.

Settings (non-scrollable) and chat detail screens (inverted layout
plus a custom input field at the bottom — these need a more careful
refactor to handle IME + nav inset together) intentionally left
unchanged.

https://claude.ai/code/session_01M3Bj24jLc9aVhMuvn55jXa

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/chats/rooms/feed/ChatroomListFeedView.kt

@@ -21,6 +21,7 @@
 package com.vitorpamplona.amethyst.ui.screen.loggedIn.chats.rooms.feed
 
 import androidx.compose.animation.core.tween
+import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.lazy.LazyColumn
@@ -30,6 +31,7 @@ import androidx.compose.material3.HorizontalDivider
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.vitorpamplona.amethyst.commons.ui.feeds.FeedContentState
 import com.vitorpamplona.amethyst.commons.ui.feeds.FeedState
@@ -39,6 +41,7 @@ import com.vitorpamplona.amethyst.ui.feeds.FeedError
 import com.vitorpamplona.amethyst.ui.feeds.LoadingFeed
 import com.vitorpamplona.amethyst.ui.feeds.RefresheableBox
 import com.vitorpamplona.amethyst.ui.feeds.SaveableFeedContentState
+import com.vitorpamplona.amethyst.ui.layouts.rememberMergedPadding
 import com.vitorpamplona.amethyst.ui.navigation.navs.INav
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.chats.rooms.ChatroomHeaderCompose
@@ -49,12 +52,13 @@ import com.vitorpamplona.amethyst.ui.theme.FeedPadding
 fun ChatroomListFeedView(
     feedContentState: FeedContentState,
     scrollStateKey: String,
+    scaffoldPadding: PaddingValues = PaddingValues(0.dp),
     accountViewModel: AccountViewModel,
     nav: INav,
 ) {
     RefresheableBox(feedContentState, true) {
         SaveableFeedContentState(feedContentState, scrollStateKey) { listState ->
-            CrossFadeState(feedContentState, listState, accountViewModel, nav)
+            CrossFadeState(feedContentState, listState, scaffoldPadding, accountViewModel, nav)
         }
     }
 }
@@ -63,6 +67,7 @@ fun ChatroomListFeedView(
 private fun CrossFadeState(
     feedContentState: FeedContentState,
     listState: LazyListState,
+    scaffoldPadding: PaddingValues,
     accountViewModel: AccountViewModel,
     nav: INav,
 ) {
@@ -83,7 +88,7 @@ private fun CrossFadeState(
             }
 
             is FeedState.Loaded -> {
-                FeedLoaded(state, listState, accountViewModel, nav)
+                FeedLoaded(state, listState, scaffoldPadding, accountViewModel, nav)
             }
 
             FeedState.Loading -> {
@@ -97,13 +102,14 @@ private fun CrossFadeState(
 private fun FeedLoaded(
     loaded: FeedState.Loaded,
     listState: LazyListState,
+    scaffoldPadding: PaddingValues,
     accountViewModel: AccountViewModel,
     nav: INav,
 ) {
     val items by loaded.feed.collectAsStateWithLifecycle()
 
     LazyColumn(
-        contentPadding = FeedPadding,
+        contentPadding = rememberMergedPadding(scaffoldPadding, FeedPadding),
         state = listState,
     ) {
         itemsIndexed(

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/chats/rooms/feed/ChatroomListTabs.kt

@@ -127,7 +127,6 @@ fun MessagesPager(
     nav: INav,
 ) {
     HorizontalPager(
-        contentPadding = paddingValues,
         state = pagerState,
         userScrollEnabled = true,
         modifier =
@@ -139,6 +138,7 @@ fun MessagesPager(
         ChatroomListFeedView(
             feedContentState = tabs[page].feedContentState,
             scrollStateKey = tabs[page].scrollStateKey,
+            scaffoldPadding = paddingValues,
             accountViewModel = accountViewModel,
             nav = nav,
         )

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/chats/rooms/twopane/ChatroomListPane.kt

@@ -44,6 +44,7 @@ import kotlinx.collections.immutable.persistentListOf
 fun ChatroomList(
     knownFeedContentState: FeedContentState,
     newFeedContentState: FeedContentState,
+    scaffoldPadding: PaddingValues = PaddingValues(0.dp),
     accountViewModel: AccountViewModel,
     nav: INav,
 ) {
@@ -75,7 +76,7 @@ fun ChatroomList(
         MessagesPager(
             pagerState,
             tabs,
-            PaddingValues(0.dp),
+            scaffoldPadding,
             accountViewModel,
             nav,
         )

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/chats/rooms/twopane/MessagesTwoPane.kt

@@ -21,7 +21,6 @@
 package com.vitorpamplona.amethyst.ui.screen.loggedIn.chats.rooms.twopane
 
 import androidx.compose.foundation.layout.Box
-import androidx.compose.foundation.layout.consumeWindowInsets
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.systemBarsPadding
@@ -97,6 +96,7 @@ fun MessagesTwoPane(
                     ChatroomList(
                         knownFeedContentState,
                         newFeedContentState,
+                        padding,
                         accountViewModel,
                         twoPaneNav,
                     )
@@ -134,7 +134,7 @@ fun MessagesTwoPane(
             strategy = strategy,
             displayFeatures = displayFeatures,
             foldAwareConfiguration = FoldAwareConfiguration.VerticalFoldsOnly,
-            modifier = Modifier.padding(padding).consumeWindowInsets(padding).fillMaxSize(),
+            modifier = Modifier.fillMaxSize(),
         )
     }
 }

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/dvms/DvmContentDiscoveryScreen.kt

@@ -23,8 +23,8 @@ package com.vitorpamplona.amethyst.ui.screen.loggedIn.dvms
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.Spacer
-import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.padding
 import androidx.compose.material3.Button
@@ -97,20 +97,18 @@ fun DvmContentDiscoveryScreen(
         },
         accountViewModel = accountViewModel,
     ) { paddingValues ->
-        Column(Modifier.padding(paddingValues)) {
-            LoadNote(baseNoteHex = appDefinitionEventId, accountViewModel = accountViewModel) { note ->
-                note?.let { baseNote ->
-                    WatchNoteEvent(
-                        baseNote,
-                        onNoteEventFound = {
-                            DvmContentDiscoveryScreen(baseNote, accountViewModel, nav)
-                        },
-                        onBlank = {
-                            FeedEmptyWithStatus(baseNote, stringRes(R.string.dvm_looking_for_app), accountViewModel, nav)
-                        },
-                        accountViewModel,
-                    )
-                }
+        LoadNote(baseNoteHex = appDefinitionEventId, accountViewModel = accountViewModel) { note ->
+            note?.let { baseNote ->
+                WatchNoteEvent(
+                    baseNote,
+                    onNoteEventFound = {
+                        DvmContentDiscoveryScreen(baseNote, paddingValues, accountViewModel, nav)
+                    },
+                    onBlank = {
+                        FeedEmptyWithStatus(baseNote, stringRes(R.string.dvm_looking_for_app), accountViewModel, nav)
+                    },
+                    accountViewModel,
+                )
             }
         }
     }
@@ -119,6 +117,7 @@ fun DvmContentDiscoveryScreen(
 @Composable
 fun DvmContentDiscoveryScreen(
     appDefinition: Note,
+    scaffoldPadding: PaddingValues,
     accountViewModel: AccountViewModel,
     nav: INav,
 ) {
@@ -153,6 +152,7 @@ fun DvmContentDiscoveryScreen(
                 appDefinition,
                 myRequestEventID,
                 onRefresh,
+                scaffoldPadding,
                 accountViewModel,
                 nav,
             )
@@ -169,6 +169,7 @@ fun ObserverContentDiscoveryResponse(
     appDefinition: Note,
     dvmRequestId: Note,
     onRefresh: () -> Unit,
+    scaffoldPadding: PaddingValues,
     accountViewModel: AccountViewModel,
     nav: INav,
 ) {
@@ -197,6 +198,7 @@ fun ObserverContentDiscoveryResponse(
             dvmRequestId.idHex,
             myResponse,
             onRefresh,
+            scaffoldPadding,
             accountViewModel,
             nav,
         )
@@ -249,6 +251,7 @@ fun PrepareViewContentDiscoveryModels(
     dvmRequestId: String,
     latestResponse: NIP90ContentDiscoveryResponseEvent,
     onRefresh: () -> Unit,
+    scaffoldPadding: PaddingValues,
     accountViewModel: AccountViewModel,
     nav: INav,
 ) {
@@ -262,32 +265,32 @@ fun PrepareViewContentDiscoveryModels(
         resultFeedViewModel.invalidateData()
     }
 
-    RenderNostrNIP90ContentDiscoveryScreen(resultFeedViewModel, onRefresh, accountViewModel, nav)
+    RenderNostrNIP90ContentDiscoveryScreen(resultFeedViewModel, onRefresh, scaffoldPadding, accountViewModel, nav)
 }
 
 @Composable
 fun RenderNostrNIP90ContentDiscoveryScreen(
     resultFeedViewModel: NIP90ContentDiscoveryFeedViewModel,
     onRefresh: () -> Unit,
+    scaffoldPadding: PaddingValues,
     accountViewModel: AccountViewModel,
     nav: INav,
 ) {
-    Column(Modifier.fillMaxHeight()) {
-        SaveableFeedState(resultFeedViewModel.feedState, null) { listState ->
-            // TODO (Optional) Instead of a like reaction, do a Kind 31989 NIP89 App recommendation
-            RenderFeedState(
-                resultFeedViewModel,
-                accountViewModel,
-                listState,
-                nav,
-                null,
-                onEmpty = {
-                    FeedEmpty {
-                        onRefresh()
-                    }
-                },
-            )
-        }
+    SaveableFeedState(resultFeedViewModel.feedState, null) { listState ->
+        // TODO (Optional) Instead of a like reaction, do a Kind 31989 NIP89 App recommendation
+        RenderFeedState(
+            resultFeedViewModel,
+            accountViewModel,
+            listState,
+            nav,
+            null,
+            scaffoldPadding,
+            onEmpty = {
+                FeedEmpty {
+                    onRefresh()
+                }
+            },
+        )
     }
 }
 

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/search/SearchScreen.kt

@@ -22,9 +22,8 @@ package com.vitorpamplona.amethyst.ui.screen.loggedIn.search
 
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Arrangement
-import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.Row
-import androidx.compose.foundation.layout.consumeWindowInsets
 import androidx.compose.foundation.layout.defaultMinSize
 import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.fillMaxWidth
@@ -59,6 +58,7 @@ import com.vitorpamplona.amethyst.model.nip11RelayInfo.loadRelayInfo
 import com.vitorpamplona.amethyst.service.relayClient.searchCommand.TextSearchDataSourceSubscription
 import com.vitorpamplona.amethyst.ui.feeds.WatchLifecycleAndUpdateModel
 import com.vitorpamplona.amethyst.ui.layouts.DisappearingScaffold
+import com.vitorpamplona.amethyst.ui.layouts.rememberMergedPadding
 import com.vitorpamplona.amethyst.ui.navigation.bottombars.AppBottomBar
 import com.vitorpamplona.amethyst.ui.navigation.navs.INav
 import com.vitorpamplona.amethyst.ui.navigation.routes.Route
@@ -123,13 +123,14 @@ fun SearchScreen(
             }
         },
         accountViewModel = accountViewModel,
-    ) {
-        Column(
-            modifier = Modifier.padding(it).consumeWindowInsets(it),
-        ) {
-            ObserveRelayListForSearchAndDisplayIfNotFound(accountViewModel, nav)
-            DisplaySearchResults(searchBarViewModel, nav, accountViewModel)
-        }
+    ) { scaffoldPadding ->
+        DisplaySearchResults(
+            searchBarViewModel = searchBarViewModel,
+            scaffoldPadding = scaffoldPadding,
+            header = { ObserveRelayListForSearchAndDisplayIfNotFound(accountViewModel, nav) },
+            nav = nav,
+            accountViewModel = accountViewModel,
+        )
     }
 }
 
@@ -219,13 +220,12 @@ private fun SearchTextField(
 @Composable
 private fun DisplaySearchResults(
     searchBarViewModel: SearchBarViewModel,
+    scaffoldPadding: PaddingValues,
+    header: @Composable () -> Unit,
     nav: INav,
     accountViewModel: AccountViewModel,
 ) {
-    if (!searchBarViewModel.isRefreshing.value) {
-        return
-    }
-
+    val isRefreshing by searchBarViewModel.isRefreshing
     val hashTags by searchBarViewModel.hashtagResults.collectAsStateWithLifecycle()
     val relays by searchBarViewModel.relayResults.collectAsStateWithLifecycle()
     val users by searchBarViewModel.searchResultsUsers.collectAsStateWithLifecycle()
@@ -236,9 +236,13 @@ private fun DisplaySearchResults(
 
     LazyColumn(
         modifier = Modifier.fillMaxHeight(),
-        contentPadding = FeedPadding,
+        contentPadding = rememberMergedPadding(scaffoldPadding, FeedPadding),
         state = searchBarViewModel.listState,
     ) {
+        item(key = "scaffold-header") { header() }
+
+        if (!isRefreshing) return@LazyColumn
+
         itemsIndexed(
             hashTags,
             key = { _, item -> "#$item" },