fix(release): harden cross-platform gates

src/utils/downloadLocations.test.ts

@@ -17,9 +17,9 @@ import {
 } from './downloadLocations';
 
 describe('download locations', () => {
-  it('compares Windows and macOS locations case-insensitively', () => {
+  it('matches backend platform path case semantics', () => {
     expect(downloadLocationEquals('D:\\Downloads', 'Movie.MP4', 'd:/downloads', 'movie.mp4', 'windows')).toBe(true);
-    expect(downloadLocationEquals('/Users/Test', 'Movie.MP4', '/users/test', 'movie.mp4', 'macos')).toBe(true);
+    expect(downloadLocationEquals('/Users/Test', 'Movie.MP4', '/users/test', 'movie.mp4', 'macos')).toBe(false);
     expect(downloadLocationEquals('/home/Test', 'Movie.MP4', '/home/test', 'movie.mp4', 'linux')).toBe(false);
   });
   beforeEach(() => {

src/utils/downloadLocations.ts

@@ -153,7 +153,7 @@ export const downloadLocationEquals = (
 ): boolean => {
   const normalize = (value: string) => {
     const normalized = value.replace(/\\/g, '/').replace(/\/+$/, '');
-    return os === 'windows' || os === 'macos'
+    return os === 'windows'
       ? normalized.toLocaleLowerCase()
       : normalized;
   };