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>

test/article_extractor_test.dart

@@ -1,7 +1,7 @@
 import 'dart:convert';
 
 import 'package:daily_tech_news/models/article.dart';
-import 'package:daily_tech_news/models/news_source.dart';
+import 'package:daily_tech_news/models/source.dart';
 import 'package:daily_tech_news/services/article_extractor.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:http/http.dart' as http;
@@ -88,7 +88,7 @@ void main() {
       title: 'Story',
       link: 'https://www.golem.de/news/story.html',
       excerpt: 'Teaser',
-      source: NewsSource(
+      source: Source(
           id: 'golem', name: 'Golem.de', feedUrl: '', homepage: '', language: SourceLanguage.de),
     );
     final content = await extractor.load(article);

test/claude_summarizer_test.dart

@@ -1,14 +1,14 @@
 import 'dart:convert';
 
 import 'package:daily_tech_news/models/article.dart';
-import 'package:daily_tech_news/models/news_source.dart';
+import 'package:daily_tech_news/models/source.dart';
 import 'package:daily_tech_news/services/claude_summarizer.dart';
 import 'package:daily_tech_news/services/summarizer.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:http/http.dart' as http;
 import 'package:http/testing.dart';
 
-const _source = NewsSource(
+const _source = Source(
   id: 'verge',
   name: 'The Verge',
   feedUrl: 'https://example.com/feed',

test/comic_reader_test.dart

@@ -2,7 +2,7 @@ import 'dart:io';
 import 'dart:ui' as ui;
 
 import 'package:daily_tech_news/models/article.dart';
-import 'package:daily_tech_news/models/news_source.dart';
+import 'package:daily_tech_news/models/source.dart';
 import 'package:daily_tech_news/services/article_extractor.dart';
 import 'package:daily_tech_news/ui/article_screen.dart';
 import 'package:flutter/material.dart';

test/consent_service_test.dart

@@ -1,7 +1,7 @@
 import 'dart:convert';
 
 import 'package:daily_tech_news/models/article.dart';
-import 'package:daily_tech_news/models/news_source.dart';
+import 'package:daily_tech_news/models/source.dart';
 import 'package:daily_tech_news/services/article_extractor.dart';
 import 'package:daily_tech_news/services/consent_service.dart';
 import 'package:flutter_test/flutter_test.dart';
@@ -50,7 +50,7 @@ const _article = Article(
   title: 'Story',
   link: _articleUrl,
   excerpt: 'Teaser',
-  source: NewsSource(
+  source: Source(
       id: 'golem', name: 'Golem.de', feedUrl: '', homepage: '', language: SourceLanguage.de),
 );
 

test/default_sources_test.dart

@@ -1,8 +1,8 @@
 import 'package:daily_tech_news/data/default_sources.dart';
-import 'package:daily_tech_news/models/news_source.dart';
+import 'package:daily_tech_news/models/source.dart';
 import 'package:flutter_test/flutter_test.dart';
 
-NewsSource _byId(String id) => defaultSources.singleWhere((s) => s.id == id);
+Source _byId(String id) => defaultSources.singleWhere((s) => s.id == id);
 
 void main() {
   test('the News sources on by default are the curated quality set', () {

test/feed_parser_test.dart

@@ -1,8 +1,8 @@
-import 'package:daily_tech_news/models/news_source.dart';
+import 'package:daily_tech_news/models/source.dart';
 import 'package:daily_tech_news/services/feed_parser.dart';
 import 'package:flutter_test/flutter_test.dart';
 
-const _source = NewsSource(
+const _source = Source(
   id: 'test',
   name: 'Test',
   feedUrl: 'https://example.com/feed',

test/fun_section_test.dart

@@ -1,7 +1,7 @@
 import 'package:daily_tech_news/data/default_sources.dart';
 import 'package:daily_tech_news/models/article.dart';
 import 'package:daily_tech_news/models/briefing.dart';
-import 'package:daily_tech_news/models/news_source.dart';
+import 'package:daily_tech_news/models/source.dart';
 import 'package:daily_tech_news/services/summarizer.dart';
 import 'package:daily_tech_news/state/app_state.dart';
 import 'package:daily_tech_news/ui/feed_screen.dart';

test/learn_tab_test.dart

@@ -1,4 +1,4 @@
-import 'package:daily_tech_news/models/news_source.dart';
+import 'package:daily_tech_news/models/source.dart';
 import 'package:daily_tech_news/state/app_state.dart';
 import 'package:daily_tech_news/ui/feed_screen.dart';
 import 'package:daily_tech_news/ui/home_shell.dart';

test/live_feeds_test.dart

@@ -2,7 +2,7 @@
 import 'dart:io';
 
 import 'package:daily_tech_news/data/default_sources.dart';
-import 'package:daily_tech_news/models/news_source.dart';
+import 'package:daily_tech_news/models/source.dart';
 import 'package:daily_tech_news/services/article_extractor.dart';
 import 'package:daily_tech_news/services/consent_service.dart';
 import 'package:daily_tech_news/services/feed_service.dart';

test/paid_newsletter_posts_test.dart

@@ -1,7 +1,7 @@
 import 'dart:io';
 
 import 'package:daily_tech_news/models/article.dart';
-import 'package:daily_tech_news/models/news_source.dart';
+import 'package:daily_tech_news/models/source.dart';
 import 'package:daily_tech_news/services/feed_parser.dart';
 import 'package:daily_tech_news/services/feed_service.dart';
 import 'package:flutter_test/flutter_test.dart';
@@ -17,7 +17,7 @@ class _SavedFeeds extends FeedService {
   final Map<String, String> fixtureByFeedUrl;
 
   @override
-  Future<List<Article>> fetchSource(NewsSource source, {String corsProxy = ''}) async {
+  Future<List<Article>> fetchSource(Source source, {String corsProxy = ''}) async {
     final xml = File(fixtureByFeedUrl[source.feedUrl]!).readAsStringSync();
     final anHourAgo = DateTime.now().toUtc().subtract(const Duration(hours: 1));
     return [

test/paywall_service_test.dart

@@ -1,7 +1,7 @@
 import 'dart:io';
 
 import 'package:daily_tech_news/models/article.dart';
-import 'package:daily_tech_news/models/news_source.dart';
+import 'package:daily_tech_news/models/source.dart';
 import 'package:daily_tech_news/services/feed_parser.dart';
 import 'package:daily_tech_news/services/paywall_service.dart';
 import 'package:daily_tech_news/services/storage.dart';
@@ -10,7 +10,7 @@ import 'package:http/http.dart' as http;
 import 'package:http/testing.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
-NewsSource _source({bool checkPage = false}) => NewsSource(
+Source _source({bool checkPage = false}) => Source(
       id: 'src',
       name: 'Source',
       feedUrl: 'https://example.com/feed',

test/source_kinds_test.dart

@@ -3,7 +3,7 @@ import 'dart:convert';
 import 'package:daily_tech_news/data/default_sources.dart';
 import 'package:daily_tech_news/models/article.dart';
 import 'package:daily_tech_news/models/briefing.dart';
-import 'package:daily_tech_news/models/news_source.dart';
+import 'package:daily_tech_news/models/source.dart';
 import 'package:daily_tech_news/services/summarizer.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:shared_preferences/shared_preferences.dart';

test/source_selection_test.dart

@@ -1,5 +1,5 @@
 import 'package:daily_tech_news/data/default_sources.dart';
-import 'package:daily_tech_news/models/news_source.dart';
+import 'package:daily_tech_news/models/source.dart';
 import 'package:daily_tech_news/services/feed_service.dart';
 import 'package:daily_tech_news/services/storage.dart';
 import 'package:daily_tech_news/state/app_state.dart';
@@ -9,12 +9,12 @@ import 'package:shared_preferences/shared_preferences.dart';
 /// Returns no articles, so starting the app doesn't hit the network.
 class _NoFeeds extends FeedService {
   @override
-  Future<FeedResult> fetchAll(List<NewsSource> sources,
-          {required Duration Function(NewsSource source) maxAgeOf, String corsProxy = ''}) async =>
+  Future<FeedResult> fetchAll(List<Source> sources,
+          {required Duration Function(Source source) maxAgeOf, String corsProxy = ''}) async =>
       const FeedResult([], {});
 }
 
-NewsSource _source(String id, {bool onByDefault = false}) => NewsSource(
+Source _source(String id, {bool onByDefault = false}) => Source(
       id: id,
       name: id,
       feedUrl: 'https://example.com/$id.xml',
@@ -31,7 +31,7 @@ const _learningOnByDefault = {
 };
 
 /// Starts the app the way a launch does, against whatever is in preferences.
-Future<AppState> _launch(List<NewsSource> curatedSources) async {
+Future<AppState> _launch(List<Source> curatedSources) async {
   final state =
       AppState(await Storage.open(), feedService: _NoFeeds(), curatedSources: curatedSources);
   await state.init();

test/sources_tab_test.dart

@@ -1,4 +1,4 @@
-import 'package:daily_tech_news/models/news_source.dart';
+import 'package:daily_tech_news/models/source.dart';
 import 'package:daily_tech_news/state/app_state.dart';
 import 'package:daily_tech_news/ui/home_shell.dart';
 import 'package:daily_tech_news/ui/learn_screen.dart';
@@ -9,7 +9,7 @@ import 'package:shared_preferences/shared_preferences.dart';
 
 import 'support/fake_app.dart';
 
-NewsSource _source(String id, SourceKind kind, SourceLanguage language) => NewsSource(
+Source _source(String id, SourceKind kind, SourceLanguage language) => Source(
       id: id,
       name: id,
       feedUrl: 'https://example.com/$id.xml',
@@ -30,7 +30,7 @@ void main() {
 
   setUp(() => SharedPreferences.setMockInitialValues({}));
 
-  Future<AppState> launch(WidgetTester tester, List<NewsSource> sources) async =>
+  Future<AppState> launch(WidgetTester tester, List<Source> sources) async =>
       (await tester.runAsync(() => launchApp(sources)))!;
 
   Future<void> showSources(WidgetTester tester, AppState state) async {

test/support/fake_app.dart

@@ -1,5 +1,5 @@
 import 'package:daily_tech_news/models/article.dart';
-import 'package:daily_tech_news/models/news_source.dart';
+import 'package:daily_tech_news/models/source.dart';
 import 'package:daily_tech_news/services/article_extractor.dart';
 import 'package:daily_tech_news/services/feed_service.dart';
 import 'package:daily_tech_news/services/storage.dart';
@@ -18,14 +18,14 @@ class FakeFeeds extends FeedService {
   int refreshes = 0;
 
   @override
-  Future<FeedResult> fetchAll(List<NewsSource> sources,
-      {required Duration Function(NewsSource source) maxAgeOf, String corsProxy = ''}) {
+  Future<FeedResult> fetchAll(List<Source> sources,
+      {required Duration Function(Source source) maxAgeOf, String corsProxy = ''}) {
     refreshes++;
     return super.fetchAll(sources, maxAgeOf: maxAgeOf, corsProxy: corsProxy);
   }
 
   @override
-  Future<List<Article>> fetchSource(NewsSource source, {String corsProxy = ''}) async {
+  Future<List<Article>> fetchSource(Source source, {String corsProxy = ''}) async {
     final now = DateTime.now().toUtc();
     // A feed nobody set up still has an article, so it can be added.
     if (!byFeedUrl.containsKey(source.feedUrl)) {
@@ -43,7 +43,7 @@ class FakeFeeds extends FeedService {
   }
 }
 
-NewsSource testSource(String id, SourceKind kind) => NewsSource(
+Source testSource(String id, SourceKind kind) => Source(
       id: id,
       name: id,
       feedUrl: 'https://example.com/$id.xml',
@@ -55,7 +55,7 @@ NewsSource testSource(String id, SourceKind kind) => NewsSource(
 
 /// Starts the app the way a launch does, against whatever is in preferences.
 Future<AppState> launchApp(
-  List<NewsSource> curatedSources, {
+  List<Source> curatedSources, {
   Map<String, List<(String, Duration)>> feeds = const {},
   FeedService? feedService,
   Summarizer? summarizer,