feat(feed): show empty state when no headlines

- Show informative message
- When list is empty
- After filters applied

Author: fulleni

lib/headlines-feed/view/headlines_feed_page.dart

@@ -11,6 +11,7 @@ import 'package:ht_main/headlines-feed/widgets/headline_item_widget.dart';
 import 'package:ht_main/l10n/l10n.dart';
 import 'package:ht_main/router/routes.dart';
 import 'package:ht_main/shared/constants/constants.dart';
+import 'package:ht_main/shared/shared.dart';
 import 'package:ht_main/shared/widgets/failure_state_widget.dart';
 import 'package:ht_main/shared/widgets/loading_state_widget.dart';
 // Import Source
@@ -166,6 +167,21 @@ class _HeadlinesFeedPageState extends State<HeadlinesFeedPage> {
               return const SizedBox.shrink();
 
             case HeadlinesFeedLoaded():
+              if (state.headlines.isEmpty) {
+                // If the list is empty, show an informative message using the
+                // shared InitialStateWidget. This is especially relevant after
+                // filters are applied and yield no results, or if the initial
+                // unfiltered feed is empty.
+                return InitialStateWidget(
+                  icon:
+                      Icons
+                          .search_off_outlined, // Visually indicates no results
+                  headline:
+                      l10n.headlinesFeedEmptyFilteredHeadline, // Placeholder l10n
+                  subheadline:
+                      l10n.headlinesFeedEmptyFilteredSubheadline, // Placeholder l10n
+                );
+              }
               // Display the list of headlines with pull-to-refresh
               return RefreshIndicator(
                 onRefresh: () async {

lib/l10n/arb/app_ar.arb

@@ -549,5 +549,13 @@
     "emailCodeValidationLengthError": "يجب أن يتكون الرمز من 6 أرقام.",
     "@emailCodeValidationLengthError": {
         "description": "Validation error when the email verification code is not 6 digits."
+    },
+    "headlinesFeedEmptyFilteredHeadline": "لا توجد عناوين تطابق فلاترك",
+    "@headlinesFeedEmptyFilteredHeadline": {
+        "description": "Headline text shown when headline filters result in an empty list"
+    },
+    "headlinesFeedEmptyFilteredSubheadline": "حاول تعديل معايير الفلترة أو مسحها لرؤية جميع العناوين.",
+    "@headlinesFeedEmptyFilteredSubheadline": {
+        "description": "Subheadline text shown when headline filters result in an empty list"
     }
 }

lib/l10n/arb/app_en.arb

@@ -549,5 +549,13 @@
     "emailCodeValidationLengthError": "The code must be 6 digits.",
     "@emailCodeValidationLengthError": {
         "description": "Validation error when the email verification code is not 6 digits."
+    },
+    "headlinesFeedEmptyFilteredHeadline": "No Headlines Match Your Filters",
+    "@headlinesFeedEmptyFilteredHeadline": {
+        "description": "Headline text shown when headline filters result in an empty list"
+    },
+    "headlinesFeedEmptyFilteredSubheadline": "Try adjusting your filter criteria or clearing them to see all headlines.",
+    "@headlinesFeedEmptyFilteredSubheadline": {
+        "description": "Subheadline text shown when headline filters result in an empty list"
     }
 }