fix(windows): call with_webview on built window, import COREWEBVIEW2_PERMISSION_KIND type

with_webview is on WebviewWindow (the built window), not WebviewWindowBuilder.
Also import COREWEBVIEW2_PERMISSION_KIND as a type for the out-param zero-init.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src-tauri/src/lib.rs

@@ -26,21 +26,22 @@ pub fn run() {
             };
 
             let app_handle = app.handle().clone();
-            let builder = WebviewWindowBuilder::new(app, "main".to_string(), window_url)
+            let window = WebviewWindowBuilder::new(app, "main".to_string(), window_url)
                 .title("Cinny")
                 .disable_drag_drop_handler()
                 .on_new_window(move |url, _features| {
                     let _ = app_handle.opener().open_url(url.as_str(), None::<&str>);
                     NewWindowResponse::Deny
-                });
+                })
+                .build()?;
 
             // Grant camera and microphone to WebView2 automatically.
-            // Windows requires an explicit PermissionRequested COM event handler;
-            // macOS uses Info.plist.
+            // Windows requires an explicit PermissionRequested COM event handler.
             #[cfg(target_os = "windows")]
-            let builder = builder.with_webview(|webview| {
+            window.with_webview(|webview| {
                 use webview2_com::{
                     Microsoft::Web::WebView2::Win32::{
+                        COREWEBVIEW2_PERMISSION_KIND,
                         COREWEBVIEW2_PERMISSION_KIND_CAMERA,
                         COREWEBVIEW2_PERMISSION_KIND_MICROPHONE,
                         COREWEBVIEW2_PERMISSION_STATE_ALLOW,
@@ -53,7 +54,6 @@ pub fn run() {
                     let handler = PermissionRequestedEventHandler::create(Box::new(
                         |_sender, args| {
                             if let Some(args) = args {
-                                // PermissionKind uses a COM out-param pattern
                                 let mut kind = COREWEBVIEW2_PERMISSION_KIND(0);
                                 unsafe { args.PermissionKind(&mut kind) }?;
                                 if kind == COREWEBVIEW2_PERMISSION_KIND_MICROPHONE
@@ -70,9 +70,8 @@ pub fn run() {
                     let mut token = Default::default();
                     let _ = unsafe { core.add_PermissionRequested(&handler, &mut token) };
                 }
-            });
+            })?;
 
-            builder.build()?;
             Ok(())
         })
         .run(context)