Misc cleanup

- Migrate sources filter screen to full compose
- Use standard "OK"/"Cancel" actions for delete category dialog
- Abstract some AppBar logic
- Remove some dead code
- Group related strings

app/src/main/java/eu/kanade/presentation/browse/SourcesFilterScreen.kt

@@ -1,24 +1,27 @@
 package eu.kanade.presentation.browse
 
+import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.WindowInsets
 import androidx.compose.foundation.layout.asPaddingValues
 import androidx.compose.foundation.layout.navigationBars
+import androidx.compose.foundation.layout.statusBarsPadding
 import androidx.compose.foundation.lazy.items
 import androidx.compose.material3.Checkbox
 import androidx.compose.material3.Switch
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
-import androidx.compose.runtime.getValue
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.input.nestedscroll.NestedScrollConnection
-import androidx.compose.ui.input.nestedscroll.nestedScroll
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
 import eu.kanade.domain.source.model.Source
 import eu.kanade.presentation.browse.components.BaseSourceItem
+import eu.kanade.presentation.components.AppBar
 import eu.kanade.presentation.components.EmptyScreen
 import eu.kanade.presentation.components.LoadingScreen
 import eu.kanade.presentation.components.PreferenceRow
+import eu.kanade.presentation.components.Scaffold
 import eu.kanade.presentation.components.ScrollbarLazyColumn
+import eu.kanade.presentation.util.plus
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.ui.browse.source.FilterUiModel
 import eu.kanade.tachiyomi.ui.browse.source.SourcesFilterPresenter
@@ -28,22 +31,32 @@ import kotlinx.coroutines.flow.collectLatest
 
 @Composable
 fun SourcesFilterScreen(
-    nestedScrollInterop: NestedScrollConnection,
+    navigateUp: () -> Unit,
     presenter: SourcesFilterPresenter,
     onClickLang: (String) -> Unit,
     onClickSource: (Source) -> Unit,
 ) {
     val context = LocalContext.current
-    when {
-        presenter.isLoading -> LoadingScreen()
-        presenter.isEmpty -> EmptyScreen(textResource = R.string.source_filter_empty_screen)
-        else -> {
-            SourcesFilterContent(
-                nestedScrollInterop = nestedScrollInterop,
-                state = presenter,
-                onClickLang = onClickLang,
-                onClickSource = onClickSource,
+    Scaffold(
+        modifier = Modifier.statusBarsPadding(),
+        topBar = {
+            AppBar(
+                title = stringResource(R.string.label_sources),
+                navigateUp = navigateUp,
             )
+        },
+    ) { paddingValues ->
+        when {
+            presenter.isLoading -> LoadingScreen()
+            presenter.isEmpty -> EmptyScreen(textResource = R.string.source_filter_empty_screen)
+            else -> {
+                SourcesFilterContent(
+                    paddingValues = paddingValues,
+                    state = presenter,
+                    onClickLang = onClickLang,
+                    onClickSource = onClickSource,
+                )
+            }
         }
     }
     LaunchedEffect(Unit) {
@@ -59,14 +72,13 @@ fun SourcesFilterScreen(
 
 @Composable
 fun SourcesFilterContent(
-    nestedScrollInterop: NestedScrollConnection,
+    paddingValues: PaddingValues,
     state: SourcesFilterState,
     onClickLang: (String) -> Unit,
     onClickSource: (Source) -> Unit,
 ) {
     ScrollbarLazyColumn(
-        modifier = Modifier.nestedScroll(nestedScrollInterop),
-        contentPadding = WindowInsets.navigationBars.asPaddingValues(),
+        contentPadding = paddingValues + WindowInsets.navigationBars.asPaddingValues(),
     ) {
         items(
             items = state.items,