fix: download zip instead of exe

src-tauri/src/browser.rs

@@ -612,7 +612,7 @@ mod windows {
     if let Ok(entries) = std::fs::read_dir(install_dir) {
       for entry in entries.flatten() {
         let path = entry.path();
-        if path.extension().is_some_and(|ext| ext == "exe") {
+        if path.extension().is_some_and(|ext| ext == "exe") && is_pe_executable(&path) {
           let name = path
             .file_stem()
             .unwrap_or_default()
@@ -716,7 +716,7 @@ mod windows {
       for entry in entries.flatten() {
         let path = entry.path();
 
-        if path.extension().is_some_and(|ext| ext == "exe") {
+        if path.extension().is_some_and(|ext| ext == "exe") && is_pe_executable(&path) {
           let name = path
             .file_stem()
             .unwrap_or_default()
@@ -1185,6 +1185,22 @@ impl BrowserFactory {
   }
 }
 
+/// Check if a file is a valid PE executable by reading its magic bytes (MZ).
+/// Returns false for archive files (.zip starts with PK, etc.) that were
+/// incorrectly named with a .exe extension.
+#[cfg(target_os = "windows")]
+fn is_pe_executable(path: &Path) -> bool {
+  use std::io::Read;
+  let Ok(mut file) = std::fs::File::open(path) else {
+    return false;
+  };
+  let mut magic = [0u8; 2];
+  if file.read_exact(&mut magic).is_err() {
+    return false;
+  }
+  magic == [0x4D, 0x5A] // MZ
+}
+
 // Factory function to create browser instances (kept for backward compatibility)
 pub fn create_browser(browser_type: BrowserType) -> Box<dyn Browser> {
   BrowserFactory::instance().create_browser(browser_type)

src-tauri/src/browser_version_manager.rs

@@ -685,7 +685,7 @@ impl BrowserVersionManager {
           "macos-arm64" | "macos-x64" => (format!("wayfern-{version}-{platform_key}.dmg"), true),
           "linux-x64" | "linux-arm64" => (format!("wayfern-{version}-{platform_key}.tar.xz"), true),
           "windows-x64" | "windows-arm64" => {
-            (format!("wayfern-{version}-{platform_key}.exe"), false)
+            (format!("wayfern-{version}-{platform_key}.zip"), true)
           }
           _ => {
             return Err(