core: silently ignore proxy command failures to prevent config initialization crashes

packages/opencode/src/config/config.ts

@@ -274,7 +274,7 @@ export namespace Config {
         ...(proxied() ? ["--no-cache"] : []),
       ],
       { cwd: dir },
-    )
+    ).catch(() => {})
   }
 
   async function isWritable(dir: string) {