feat: enable web local Gemma

lib/features/home/presentation/providers/model_setup_controller.dart

@@ -5,9 +5,9 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 
 import 'package:kudlit_ph/features/home/presentation/providers/app_preferences_provider.dart';
 import 'package:kudlit_ph/features/scanner/presentation/providers/yolo_model_selection_provider.dart';
+import 'package:kudlit_ph/features/translator/data/datasources/local_gemma_datasource.dart';
 import 'package:kudlit_ph/features/translator/domain/entities/ai_model_info.dart';
 import 'package:kudlit_ph/features/translator/domain/entities/gemma_model_info.dart';
-import 'package:kudlit_ph/features/translator/data/datasources/local_gemma_datasource.dart';
 import 'package:kudlit_ph/features/translator/presentation/providers/ai_inference_provider.dart';
 import 'package:kudlit_ph/features/translator/presentation/providers/ai_inference_state.dart';
 import 'package:kudlit_ph/features/translator/presentation/providers/translator_providers.dart';
@@ -51,38 +51,28 @@ class ModelSetupController extends Notifier<ModelSetupState> {
     state = state.copyWith(busy: true, clearError: true);
 
     try {
-      final VisionModelSetupStatus visionStatus = await ref.read(
+      final VisionModelSetupStatus visionStatus = await ref.refresh(
         visionModelSetupStatusProvider.future,
       );
       if (!visionStatus.ready) {
         state = state.copyWith(busy: false, errorMessage: visionStatus.message);
         return;
       }
 
-      final AppPreferences prefs = await ref.read(
-        appPreferencesNotifierProvider.future,
+      final LocalGemmaReadiness gemmaReadiness = await ref.refresh(
+        localModelReadinessProvider.future,
       );
-      final AiPreference nextPreference = kIsWeb
-          ? AiPreference.cloud
-          : prefs.aiPreference;
-
-      if (!kIsWeb && nextPreference == AiPreference.local) {
-        final LocalGemmaReadiness gemmaReadiness = await ref.read(
-          localModelReadinessProvider.future,
+      if (!gemmaReadiness.installed || !gemmaReadiness.usable) {
+        state = state.copyWith(
+          busy: false,
+          errorMessage: 'Finish the offline downloads before continuing.',
         );
-        if (!gemmaReadiness.installed || !gemmaReadiness.usable) {
-          state = state.copyWith(
-            busy: false,
-            errorMessage:
-                'Download the Gemma model before continuing with offline AI.',
-          );
-          return;
-        }
+        return;
       }
 
       await ref
           .read(appPreferencesNotifierProvider.notifier)
-          .setAiPreference(nextPreference);
+          .setAiPreference(AiPreference.local);
       await ref
           .read(appPreferencesNotifierProvider.notifier)
           .markModelsDownloaded();
@@ -99,31 +89,6 @@ class ModelSetupController extends Notifier<ModelSetupState> {
 
     state = state.copyWith(busy: true, clearError: true);
 
-    if (kIsWeb) {
-      try {
-        final VisionModelSetupStatus visionStatus = await ref.refresh(
-          visionModelSetupStatusProvider.future,
-        );
-        if (!visionStatus.ready) {
-          state = state.copyWith(
-            busy: false,
-            errorMessage: visionStatus.message,
-          );
-          return;
-        }
-        await ref
-            .read(appPreferencesNotifierProvider.notifier)
-            .setAiPreference(AiPreference.cloud);
-        await ref
-            .read(appPreferencesNotifierProvider.notifier)
-            .markModelsDownloaded();
-        state = state.copyWith(busy: false, clearError: true);
-      } catch (e) {
-        state = state.copyWith(busy: false, errorMessage: e.toString());
-      }
-      return;
-    }
-
     await ref
         .read(aiInferenceNotifierProvider.notifier)
         .triggerLocalDownload(llmModel);
@@ -137,40 +102,53 @@ class ModelSetupController extends Notifier<ModelSetupState> {
     }
 
     try {
-      final List<AiModelInfo> visionModels = await ref.read(
-        availableYoloModelsProvider.future,
-      );
-      final AiModelInfo? visionModel = visionModels.isEmpty
-          ? null
-          : visionModels.first;
-      if (visionModel == null) {
-        state = state.copyWith(
-          busy: false,
-          errorMessage: 'No scanner model is configured yet.',
+      if (kIsWeb) {
+        final VisionModelSetupStatus visionStatus = await ref.refresh(
+          visionModelSetupStatusProvider.future,
         );
-        return;
-      }
+        if (!visionStatus.ready) {
+          state = state.copyWith(
+            busy: false,
+            errorMessage: visionStatus.message,
+          );
+          return;
+        }
+      } else {
+        final List<AiModelInfo> visionModels = await ref.read(
+          availableYoloModelsProvider.future,
+        );
+        final AiModelInfo? visionModel = visionModels.isEmpty
+            ? null
+            : visionModels.first;
+        if (visionModel == null) {
+          state = state.copyWith(
+            busy: false,
+            errorMessage: 'No scanner model is configured yet.',
+          );
+          return;
+        }
 
-      final String yoloUrl = resolveYoloModelUrl(visionModel);
-      if (yoloUrl.isEmpty) {
-        state = state.copyWith(
-          busy: false,
-          errorMessage:
-              'The selected scanner model does not have a download URL.',
+        final String yoloUrl = resolveYoloModelUrl(visionModel);
+        if (yoloUrl.isEmpty) {
+          state = state.copyWith(
+            busy: false,
+            errorMessage:
+                'The selected scanner model does not have a download URL.',
+          );
+          return;
+        }
+
+        await ref
+            .read(yoloModelCacheProvider)
+            .download(visionModel.id, yoloUrl, version: visionModel.version);
+        ref.invalidate(visionModelSetupStatusProvider);
+        ref.invalidate(yoloModelPathProvider);
+        unawaited(
+          ref
+              .read(yoloModelPathProvider(YoloModelScope.camera).future)
+              .catchError((Object _) => ''),
         );
-        return;
       }
-
-      await ref
-          .read(yoloModelCacheProvider)
-          .download(visionModel.id, yoloUrl, version: visionModel.version);
-      ref.invalidate(visionModelSetupStatusProvider);
-      ref.invalidate(yoloModelPathProvider);
-      unawaited(
-        ref
-            .read(yoloModelPathProvider(YoloModelScope.camera).future)
-            .catchError((Object _) => ''),
-      );
     } catch (e) {
       debugPrint('[ModelSetup] YOLO download failed: $e');
       state = state.copyWith(

lib/features/home/presentation/providers/translate_text_controller.dart

@@ -278,7 +278,7 @@ class TranslateTextController extends Notifier<TranslateTextState> {
         ref.read(appPreferencesNotifierProvider).value?.aiPreference ??
         AiPreference.cloud;
 
-    if (kIsWeb || mode == AiPreference.cloud) {
+    if (mode == AiPreference.cloud) {
       await _streamResponse(
         stream: ref
             .read(cloudGemmaDatasourceProvider)

lib/features/home/presentation/screens/model_setup_screen.dart

@@ -52,7 +52,7 @@ class _ModelSetupScreenState extends ConsumerState<ModelSetupScreen> {
   String _friendlyModelSetupError(String rawMessage) {
     final String message = rawMessage.trim();
     if (message.isEmpty) {
-      return 'Local AI setup is paused. You can use cloud AI and retry later.';
+      return 'Offline setup is paused. You can stay on internet mode and try again later.';
     }
 
     final String lower = message.toLowerCase();
@@ -73,7 +73,7 @@ class _ModelSetupScreenState extends ConsumerState<ModelSetupScreen> {
     }
 
     if (lower.contains('no ai models configured')) {
-      return 'The local model list is not available yet. You can use cloud AI for now.';
+      return 'Offline downloads are not available right now. You can stay on internet mode for now.';
     }
 
     final bool looksTechnical =
@@ -84,7 +84,7 @@ class _ModelSetupScreenState extends ConsumerState<ModelSetupScreen> {
         lower.contains('uri=') ||
         lower.contains('https://');
     if (looksTechnical) {
-      return 'Local AI setup is paused. You can use cloud AI and retry later.';
+      return 'Offline setup is paused. You can stay on internet mode and try again later.';
     }
 
     return message;
@@ -368,7 +368,7 @@ class _SetupHeadline extends StatelessWidget {
       crossAxisAlignment: CrossAxisAlignment.start,
       children: <Widget>[
         Text(
-          'Power up Kudlit',
+          'Get ready to use Kudlit',
           style: TextStyle(
             color: KudlitColors.blue900,
             fontSize: compact ? 24 : 28,
@@ -378,10 +378,8 @@ class _SetupHeadline extends StatelessWidget {
         SizedBox(height: compact ? 8 : 10),
         Text(
           kIsWeb
-              ? 'Kudlit checks the browser scanner model here before you start. '
-                    'Gemma stays in cloud mode on web.'
-              : 'Kudlit uses on-device AI models for Baybayin recognition '
-                    'and translation — no internet needed once downloaded.',
+              ? 'Set up the downloads Kudlit needs before you start.'
+              : 'Download these once so key features can keep working even without internet.',
           style: TextStyle(
             color: KudlitColors.grey300,
             fontSize: compact ? 13 : 15,
@@ -422,10 +420,8 @@ class _DownloadNotice extends StatelessWidget {
           Expanded(
             child: Text(
               kIsWeb
-                  ? 'On web, the scanner model loads from Supabase Storage in '
-                        'the browser. Gemma continues to use cloud AI.'
-                  : 'AI model files are typically 1–5 GB. '
-                        'Wi-Fi recommended. Download continues in the background.',
+                  ? 'The first setup happens in this browser and may take a while.'
+                  : 'These downloads can be large. Wi-Fi is recommended.',
               style: TextStyle(
                 color: KudlitColors.blue800,
                 fontSize: compact ? 10 : 11,
@@ -454,7 +450,7 @@ class _SetupActions extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    final String label = busy ? 'Checking models' : 'Continue';
+    final String label = busy ? 'Checking setup' : 'Continue';
 
     return Column(
       crossAxisAlignment: CrossAxisAlignment.stretch,
@@ -463,7 +459,7 @@ class _SetupActions extends StatelessWidget {
           button: true,
           enabled: !busy,
           label: label,
-          hint: 'Checks whether the required models are ready, then continues.',
+          hint: 'Checks whether everything is ready, then continues.',
           child: FilledButton.icon(
             onPressed: busy ? null : onContinue,
             icon: busy
@@ -498,7 +494,7 @@ class _SetupActions extends StatelessWidget {
             disabledForegroundColor: KudlitColors.grey500,
           ),
           child: const Text(
-            'Not now - use cloud AI',
+            'Not now - stay on internet mode',
             style: TextStyle(fontSize: 14, fontWeight: FontWeight.w600),
           ),
         ),

lib/features/home/presentation/widgets/butty_chat/butty_model_mode_selector.dart

@@ -55,8 +55,9 @@ class ButtyModelModeSelector extends ConsumerWidget {
     final String helperText = switch (offlineStatusAsync) {
       AsyncData(:final ButtyOfflineStatus value) =>
         value.detail ?? 'Offline status unknown.',
-      AsyncError() => 'Offline check failed. Use cloud or retry later.',
-      _ => 'Checking whether the offline Gemma model is installed…',
+      AsyncError() =>
+        'Offline check failed. Stay on internet mode or try again later.',
+      _ => 'Checking whether offline replies are ready…',
     };
 
     final Widget pills = Container(

lib/features/home/presentation/widgets/settings/ai_models_section.dart

@@ -6,12 +6,6 @@ import 'settings_divider.dart';
 import 'settings_section_label.dart';
 import 'vision_download_tile.dart';
 
-/// Settings section that shows download status and controls for both
-/// on-device AI models:
-///
-/// - **Gemma 4 E2B** — LLM used by Butty (offline chat / feedback).
-/// - **KudVis-1-Turbo** — YOLO TFLite used by the OCR / camera scanner.
-///
 class AiModelsSection extends StatelessWidget {
   const AiModelsSection({super.key});
 
@@ -20,7 +14,7 @@ class AiModelsSection extends StatelessWidget {
     return Column(
       crossAxisAlignment: CrossAxisAlignment.start,
       children: <Widget>[
-        const SettingsSectionLabel(text: 'AI models'),
+        const SettingsSectionLabel(text: 'Offline downloads'),
         SettingsCard(
           children: <Widget>[
             const _AiModelsIntro(),
@@ -65,7 +59,7 @@ class _AiModelsIntro extends StatelessWidget {
               crossAxisAlignment: CrossAxisAlignment.start,
               children: <Widget>[
                 Text(
-                  'Local AI setup',
+                  'Use Kudlit offline',
                   style: TextStyle(
                     fontSize: 14,
                     fontWeight: FontWeight.w800,
@@ -74,7 +68,7 @@ class _AiModelsIntro extends StatelessWidget {
                 ),
                 const SizedBox(height: 3),
                 Text(
-                  'Install once for offline Butty and scanner setup.',
+                  'Set these up once to keep replies and camera reading available without internet.',
                   style: TextStyle(
                     fontSize: 12,
                     height: 1.3,