fix: settings UX, a11y and microcopy polish

- Privacy audit log empty state now shows a purpose-written message instead of
  reusing the home-screen preference summary (which described the feature rather
  than the empty state).
- Theme manager: the dark/light variant indicator icon was the only signal of a
  theme's mode and had no contentDescription, so TalkBack announced nothing. Add
  'Dark theme' / 'Light theme' labels.
- Learned entries: guard the Words / Phrase pairs / Phrase triples groups so an
  empty category no longer renders a dangling header with no rows beneath it.
- Microcopy: reword the sync-import success summary to count-neutral past tense
  ('1 inserted' not '1 inserts'); make 'Check for Updates' sentence case to match
  the rest of the app.

Author: SysAdminDoc

app/src/main/kotlin/dev/patrickgold/florisboard/app/settings/dictionary/LearnedEntriesScreen.kt

@@ -99,7 +99,7 @@ fun LearnedEntriesScreen() = FlorisScreen {
                     )
                 } else {
                     LazyColumn(contentPadding = PaddingValues(bottom = 32.dp)) {
-                        item {
+                        if (current.words.isNotEmpty()) item {
                             PreferenceGroup(title = stringRes(R.string.settings__learned_entries__words_title)) {
                                 current.words.forEach { entry ->
                                     JetPrefListItem(
@@ -118,7 +118,7 @@ fun LearnedEntriesScreen() = FlorisScreen {
                                 }
                             }
                         }
-                        item {
+                        if (current.bigrams.isNotEmpty()) item {
                             PreferenceGroup(title = stringRes(R.string.settings__learned_entries__bigrams_title)) {
                                 current.bigrams.forEach { entry ->
                                     JetPrefListItem(
@@ -135,7 +135,7 @@ fun LearnedEntriesScreen() = FlorisScreen {
                                 }
                             }
                         }
-                        item {
+                        if (current.trigrams.isNotEmpty()) item {
                             PreferenceGroup(title = stringRes(R.string.settings__learned_entries__trigrams_title)) {
                                 current.trigrams.forEach { entry ->
                                     JetPrefListItem(

app/src/main/kotlin/dev/patrickgold/florisboard/app/settings/privacy/PrivacyAuditScreen.kt

@@ -113,7 +113,7 @@ fun PrivacyAuditScreen() = FlorisScreen {
                     modifier = Modifier.padding(horizontal = 16.dp, vertical = 8.dp),
                     icon = Icons.Default.Shield,
                     title = stringRes(R.string.settings__privacy_audit__empty),
-                    message = stringRes(R.string.settings__privacy_audit__home_summary),
+                    message = stringRes(R.string.settings__privacy_audit__empty_message),
                 )
             } else {
                 for (record in records.asReversed().take(MAX_DISPLAYED_RECORDS)) {

app/src/main/kotlin/dev/patrickgold/florisboard/app/settings/theme/ThemeManagerScreen.kt

@@ -145,7 +145,13 @@ fun ThemeManagerScreen(action: ThemeManagerScreenAction?) = FlorisScreen {
                                 } else {
                                     Icons.Default.LightMode
                                 },
-                                contentDescription = null,
+                                contentDescription = stringRes(
+                                    if (config.isNightTheme) {
+                                        R.string.settings__theme_manager__variant_dark
+                                    } else {
+                                        R.string.settings__theme_manager__variant_light
+                                    },
+                                ),
                                 tint = grayColor,
                             )
                         },

app/src/main/res/values/strings.xml

@@ -422,7 +422,7 @@
     <string name="settings__sync__export_success_summary" comment="Sync export success summary">{count} personal dictionary entries were sealed for paired devices.</string>
     <string name="settings__sync__export_success_summary_fallback" comment="Sync export success fallback summary">The selected sync file was updated.</string>
     <string name="settings__sync__import_success" comment="Sync import success title">Sync file imported</string>
-    <string name="settings__sync__import_success_summary" comment="Sync import success summary">Applied {inserted} inserts, {updated} updates, and {deleted} deletes.</string>
+    <string name="settings__sync__import_success_summary" comment="Sync import success summary">Applied {inserted} inserted, {updated} updated, and {deleted} removed.</string>
     <string name="settings__sync__import_success_summary_fallback" comment="Sync import success fallback summary">The selected sync file was merged into this device.</string>
     <string name="settings__sync__transfer_failure" comment="Sync transfer failure title">Sync file could not be processed</string>
     <string name="settings__sync__transfer_failure_summary" comment="Sync transfer failure summary">No dictionary data changed. {error_message}</string>
@@ -537,6 +537,8 @@
     <string name="settings__theme_manager__title_manage" comment="Title of the theme manager screen for managing installed and custom themes">Manage installed themes</string>
     <string name="settings__theme_manager__empty_title">No themes available</string>
     <string name="settings__theme_manager__empty_message">Bundled themes should appear here. If this stays empty, reinstall SwiftFloris or import a trusted theme extension.</string>
+    <string name="settings__theme_manager__variant_dark" comment="Accessibility label for the dark-theme indicator icon">Dark theme</string>
+    <string name="settings__theme_manager__variant_light" comment="Accessibility label for the light-theme indicator icon">Light theme</string>
     <string name="pref__theme__source_assets" comment="Label for the theme source field">Bundled SwiftFloris assets</string>
     <string name="pref__theme__source_internal" comment="Label for the theme source field">App-private storage</string>
     <string name="pref__theme__source_external" comment="Label for the theme source field">External document provider</string>
@@ -1077,6 +1079,7 @@
     <string name="settings__privacy_audit__group_records" comment="Preference group title">Recent activity</string>
     <string name="settings__privacy_audit__summary_title" comment="Preference title showing the audit summary line">Audit log</string>
     <string name="settings__privacy_audit__empty" comment="Shown when no records exist">No recorded activity yet.</string>
+    <string name="settings__privacy_audit__empty_message" comment="Empty-state body shown when no audit records exist">SwiftFloris hasn\'t made any cross-process calls on this device yet. Addon, MCP, and translation activity will appear here as it happens.</string>
     <string name="settings__privacy_audit__export" comment="Action title">Copy log as JSON</string>
     <string name="settings__privacy_audit__export__summary" comment="Action summary">Copies the full audit bundle to the clipboard so you can paste it anywhere — it never leaves the device on its own.</string>
     <string name="settings__privacy_audit__export_toast" comment="Toast after copying">Audit log copied to the clipboard.</string>
@@ -1858,7 +1861,7 @@
     <string name="ext__view__delete_in_progress_summary">Keep this screen open while SwiftFloris removes the extension and refreshes installed themes.</string>
     <string name="ext__view__delete_failure">Could not delete extension</string>
     <string name="ext__view__delete_failure_summary">The extension is still installed. Review the error, then retry after leaving screens that use this extension. Details: {error_message}</string>
-    <string name="ext__check_updates__title">Check for Updates</string>
+    <string name="ext__check_updates__title">Check for updates</string>
 
     <!-- Action strings -->
     <string name="action__add">Add</string>