Initial project import and stabilization baseline

lib/data/services/unsplash_service.dart

@@ -0,0 +1,48 @@
+import 'dart:convert';
+import 'package:http/http.dart' as http;
+
+/// Service for fetching background portraits from the Unsplash API.
+class UnsplashService {
+  static const String _clientId = 'BkgEMpfG_ReNpVwJcbgNx30IZXhoFoWwKgwbrPU0hq4';
+  static const String _baseUrl = 'https://api.unsplash.com';
+
+  static final UnsplashService instance = UnsplashService._();
+  UnsplashService._();
+
+  /// Fetches a list of highly compressed landscape URLs based on the given keyword.
+  Future<List<String>> fetchLandscapeBackgrounds(String keyword) async {
+    // Trim keyword and default to 'mosque' if empty
+    final query = keyword.trim().isEmpty ? 'mosque' : keyword.trim();
+    
+    // Specifically requesting 'regular' size to fit 1080p elegantly while minimizing RAM overhead.
+    final url = Uri.parse('$_baseUrl/search/photos?query=$query&orientation=landscape&per_page=20');
+
+    try {
+      final response = await http.get(
+        url,
+        headers: {
+          'Authorization': 'Client-ID $_clientId',
+          'Accept-Version': 'v1',
+        },
+      );
+
+      if (response.statusCode == 200) {
+        final data = json.decode(response.body);
+        final results = data['results'] as List<dynamic>? ?? [];
+        
+        final urls = <String>[];
+        for (final item in results) {
+          final urlsMap = item['urls'] as Map<String, dynamic>?;
+          if (urlsMap != null && urlsMap.containsKey('regular')) {
+            urls.add(urlsMap['regular'].toString());
+          }
+        }
+        return urls;
+      }
+    } catch (e) {
+      // Offline or error — fail silently.
+    }
+    
+    return [];
+  }
+}