Rename NewsSource to Source now that it models every kind (review item 3)

The class and its file (lib/models/source.dart) follow the glossary term.
Persisted JSON keys are unchanged.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

lib/services/claude_summarizer.dart

@@ -5,7 +5,7 @@ import 'package:http/http.dart' as http;
 
 import '../models/article.dart';
 import '../models/briefing.dart';
-import '../models/news_source.dart';
+import '../models/source.dart';
 import 'summarizer.dart';
 
 /// Calls the Claude Messages API directly over HTTP (there is no official

lib/services/feed_parser.dart

@@ -3,13 +3,13 @@ import 'package:html/parser.dart' as html_parser;
 import 'package:xml/xml.dart';
 
 import '../models/article.dart';
-import '../models/news_source.dart';
+import '../models/source.dart';
 
 /// Parses RSS 2.0, RSS 1.0 (RDF) and Atom feeds into [Article]s.
 class FeedParser {
   static const excerptLength = 400;
 
-  static List<Article> parse(String body, NewsSource source) {
+  static List<Article> parse(String body, Source source) {
     final doc = XmlDocument.parse(body);
     final root = doc.rootElement;
     if (root.name.local == 'feed') {
@@ -27,7 +27,7 @@ class FeedParser {
         .toList();
   }
 
-  static Article? _parseRssItem(XmlElement item, NewsSource source) {
+  static Article? _parseRssItem(XmlElement item, Source source) {
     final title = htmlToText(_text(item, 'title'));
     final link = _text(item, 'link').trim().isNotEmpty
         ? _text(item, 'link').trim()
@@ -53,7 +53,7 @@ class FeedParser {
     );
   }
 
-  static Article? _parseAtomEntry(XmlElement entry, NewsSource source) {
+  static Article? _parseAtomEntry(XmlElement entry, Source source) {
     final title = htmlToText(_text(entry, 'title'));
     final links = entry.childElements.where((e) => e.name.local == 'link');
     final link = links

lib/services/feed_service.dart

@@ -4,7 +4,7 @@ import 'package:flutter/foundation.dart';
 import 'package:http/http.dart' as http;
 
 import '../models/article.dart';
-import '../models/news_source.dart';
+import '../models/source.dart';
 import 'feed_parser.dart';
 
 class FeedResult {
@@ -30,8 +30,8 @@ class FeedService {
   /// [corsProxy] is only used on web, where browsers block cross-origin feed
   /// requests. It is prepended to the feed URL, e.g. `https://proxy/?url=`.
   Future<FeedResult> fetchAll(
-    List<NewsSource> sources, {
-    required Duration Function(NewsSource source) maxAgeOf,
+    List<Source> sources, {
+    required Duration Function(Source source) maxAgeOf,
     String corsProxy = '',
   }) async {
     final errors = <String, String>{};
@@ -64,7 +64,7 @@ class FeedService {
     return FeedResult(articles, errors);
   }
 
-  Future<List<Article>> fetchSource(NewsSource source, {String corsProxy = ''}) async {
+  Future<List<Article>> fetchSource(Source source, {String corsProxy = ''}) async {
     final url = kIsWeb && corsProxy.isNotEmpty
         ? '$corsProxy${Uri.encodeComponent(source.feedUrl)}'
         : source.feedUrl;

lib/services/n8n_summarizer.dart

@@ -4,7 +4,7 @@ import 'package:http/http.dart' as http;
 
 import '../models/article.dart';
 import '../models/briefing.dart';
-import '../models/news_source.dart';
+import '../models/source.dart';
 import 'summarizer.dart';
 
 /// Delegates summarizing to an existing n8n workflow via a Webhook trigger.

lib/services/storage.dart

@@ -9,7 +9,7 @@ import 'package:shared_preferences/shared_preferences.dart';
 
 import '../models/app_settings.dart';
 import '../models/briefing.dart';
-import '../models/news_source.dart';
+import '../models/source.dart';
 
 /// Persists settings, source selection and the last briefing.
 /// The Claude API key goes to the platform keystore, everything else to
@@ -81,15 +81,15 @@ class Storage {
   Future<void> saveSeenSourceIds(Set<String> ids) =>
       _prefs.setStringList('seen_sources', ids.toList());
 
-  List<NewsSource> loadCustomSources() {
+  List<Source> loadCustomSources() {
     final raw = _prefs.getString('custom_sources');
     if (raw == null) return [];
     return (jsonDecode(raw) as List)
-        .map((j) => NewsSource.custom(j as Map<String, dynamic>))
+        .map((j) => Source.custom(j as Map<String, dynamic>))
         .toList();
   }
 
-  Future<void> saveCustomSources(List<NewsSource> sources) => _prefs.setString(
+  Future<void> saveCustomSources(List<Source> sources) => _prefs.setString(
       'custom_sources', jsonEncode(sources.map((s) => s.toJson()).toList()));
 
   /// Article URL -> whether its page said it's paid, and when that was checked.

lib/services/summarizer.dart

@@ -1,6 +1,6 @@
 import '../models/article.dart';
 import '../models/briefing.dart';
-import '../models/news_source.dart';
+import '../models/source.dart';
 
 class SummarizerException implements Exception {
   SummarizerException(this.message);