fix(media hosting): restore android imgur support

src/lib/media-hosting/__tests__/provider-availability.test.ts

@@ -36,7 +36,7 @@ describe('provider-availability', () => {
 
     expect(snapshot.catbox).toBe('available');
     expect(snapshot.imgbb).toBe('available');
-    expect(snapshot.imgur).toBe('unknown');
+    expect(snapshot.imgur).toBe('available');
   });
 
   it('marks a provider unavailable when one of its media probes fails', async () => {

src/lib/media-hosting/__tests__/provider-order.test.ts

@@ -55,6 +55,13 @@ describe('provider-order', () => {
           runtime: 'web',
         }),
       ).toEqual(['catbox']);
+      expect(
+        getProviderOrder({
+          mode: 'preferred',
+          preferredProvider: 'imgur',
+          runtime: 'android',
+        }),
+      ).toEqual(['imgur']);
       expect(
         getProviderOrder({
           mode: 'preferred',
@@ -79,13 +86,6 @@ describe('provider-order', () => {
           runtime: 'web',
         }),
       ).toEqual([]);
-      expect(
-        getProviderOrder({
-          mode: 'preferred',
-          preferredProvider: 'imgur',
-          runtime: 'android',
-        }),
-      ).toEqual([]);
       expect(
         getProviderOrder({
           mode: 'preferred',
@@ -137,14 +137,14 @@ describe('provider-order', () => {
       expect(order).toEqual(['catbox']);
     });
 
-    it('uses catbox and imgbb for android random mode', () => {
+    it('uses catbox, imgur, and imgbb for android random mode', () => {
       const order = getProviderOrder({
         mode: 'random',
         preferredProvider: 'catbox',
         runtime: 'android',
       });
-      expect(order).toHaveLength(2);
-      expect([...order].sort()).toEqual(['catbox', 'imgbb']);
+      expect(order).toHaveLength(3);
+      expect([...order].sort()).toEqual(['catbox', 'imgbb', 'imgur']);
     });
   });
 });

src/lib/media-hosting/providers.ts

@@ -24,7 +24,7 @@ export const MEDIA_HOSTING_PROVIDERS: readonly ProviderDefinition[] = [
     label: 'Imgur',
     homepageUrl: 'https://imgur.com',
     availabilityProbeUrls: ['https://s.imgur.com/images/favicon-32x32.png', 'https://i.imgur.com/YpB7qfa.jpg'],
-    supportedRuntimes: ['electron'],
+    supportedRuntimes: ['electron', 'android'],
   },
   {
     id: 'imgbb',