feat: add Flathub mirror support

test/unit/platforms.test.js

@@ -16,6 +16,7 @@ describe('Platform Configuration', () => {
         'npm',
         'pypi',
         'conda',
+        'flathub',
         'homebrew'
       ];
 
@@ -134,6 +135,13 @@ describe('Platform Configuration', () => {
       ).toBe('/conda-forge/linux-64/repodata.json');
     });
 
+    it('should transform Flathub paths correctly', () => {
+      expect(transformPath('/flathub/repo/summary', 'flathub')).toBe('/repo/summary');
+      expect(transformPath('/flathub/repo/flathub.flatpakrepo', 'flathub')).toBe(
+        '/repo/flathub.flatpakrepo'
+      );
+    });
+
     it('should transform container registry paths correctly', () => {
       expect(
         transformPath('/cr/ghcr/v2/nginxinc/nginx-unprivileged/manifests/latest', 'cr-ghcr')
@@ -191,6 +199,10 @@ describe('Platform Configuration', () => {
       expect(PLATFORMS['conda-community']).toBe('https://conda.anaconda.org');
     });
 
+    it('should have correct Flathub base URL', () => {
+      expect(PLATFORMS.flathub).toBe('https://dl.flathub.org');
+    });
+
     it('should have correct container registry base URLs', () => {
       expect(PLATFORMS['cr-ghcr']).toBe('https://ghcr.io');
       expect(PLATFORMS['cr-gcr']).toBe('https://gcr.io');