fix: resolve video misclassification when filename contains 'audio' and remove legacy Kemono/Coomer providers

test/backend/pawchive_provider_test.dart

@@ -111,5 +111,28 @@ void main() {
     expect(MediaUrlSelector.isAudio(photoPost), isFalse);
     expect(MediaUrlSelector.isVideo(photoPost), isFalse);
   });
+
+  test('MediaUrlSelector classifies mp4 containing "audio" in query parameter as video and not audio', () {
+    final trickyVideoPost = Post(
+      id: 'patreon:123:456:3',
+      providerId: 'pawchive',
+      providerName: 'Pawchive',
+      previewUrl: '',
+      sampleUrl: '',
+      fileUrl:
+          'https://file.pawchive.pw/data/b4/65/b465cb03ab7b26c0a677db3ae43500d1ef71e3e25151f160cda244c1fb40cfae.mp4?f=nsfw%202%20-%20audio%20spicy.mp4',
+      tags: const ['patreon', 'artist', 'nsfw 2 - audio spicy'],
+      rating: 'unknown',
+      width: 1920,
+      height: 1080,
+      createdAt: DateTime.now(),
+      fileType: 'video',
+      score: 0,
+    );
+
+    expect(MediaUrlSelector.isVideo(trickyVideoPost), isTrue);
+    expect(MediaUrlSelector.isAudio(trickyVideoPost), isFalse);
+    expect(MediaUrlSelector.video(trickyVideoPost), contains(trickyVideoPost.fileUrl));
+  });
 }
 

test/backend/provider_parser_test.dart

@@ -6,7 +6,6 @@ import 'package:gel_rule_app/backend/mappers/moebooru_mapper.dart';
 import 'package:gel_rule_app/backend/mappers/rule34_mapper.dart';
 import 'package:gel_rule_app/backend/models/content_provider_config.dart';
 import 'package:gel_rule_app/backend/providers/custom_provider.dart';
-import 'package:gel_rule_app/backend/providers/kemono_provider.dart';
 import 'package:gel_rule_app/backend/providers/provider_factory.dart';
 import 'package:gel_rule_app/backend/providers/realbooru_html_provider.dart';
 import 'package:gel_rule_app/backend/repositories/provider_repository.dart';
@@ -307,7 +306,7 @@ void main() {
     expect(provider, isA<RealbooruHtmlProvider>());
   });
 
-  test('provider factory creates Kemono and Coomer artist providers', () {
+  test('provider factory treats removed Kemono and Coomer as unsupported', () {
     final now = DateTime(2026);
     for (final apiType in ['kemono', 'coomer']) {
       final provider = ProviderFactory().create(ContentProviderConfig(
@@ -323,7 +322,7 @@ void main() {
         updatedAt: now,
       ));
 
-      expect(provider, isA<KemonoProvider>());
+      expect(provider, isA<UnsupportedCustomProvider>());
     }
   });
 }