fix(electron): window only ui (#2926)

packages/env/src/global.ts

@@ -35,6 +35,8 @@ declare global {
     events: any;
   }
 
+  // eslint-disable-next-line no-var
+  var platform: Platform | undefined;
   // eslint-disable-next-line no-var
   var environment: Environment;
   // eslint-disable-next-line no-var
@@ -96,6 +98,22 @@ const { publicRuntimeConfig: config } = getConfig() as {
 
 publicRuntimeConfigSchema.parse(config);
 
+export const platformSchema = z.enum([
+  'aix',
+  'android',
+  'darwin',
+  'freebsd',
+  'haiku',
+  'linux',
+  'openbsd',
+  'sunos',
+  'win32',
+  'cygwin',
+  'netbsd',
+]);
+
+export type Platform = z.infer<typeof platformSchema>;
+
 type BrowserBase = {
   /**
    * @example https://app.affine.pro