fix: disable browser accelerator keys (F5 reload) in Windows webviews

Uses WebView2 ICoreWebView2Settings3 API via on_page_load to disable
browser accelerator keys in all windows, preventing F5 from reloading
the app. Applies to both config-defined and dynamically created windows.

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

Author: abose

src-tauri/Cargo.lock

@@ -43,6 +43,8 @@ hex = "0.4.3"
 
 [target.'cfg(target_os = "windows")'.dependencies]
 native-dialog = "0.7.0"
+webview2-com = "0.19"
+windows = { version = "0.39", features = ["Win32_Foundation"] }
 
 [target.'cfg(target_os = "linux")'.dependencies]
 gtk = "0.15"

src-tauri/Cargo.toml

@@ -819,6 +819,25 @@ fn main() {
 
                     app.emit_all("single-instance", Payload { args: argv, cwd }).unwrap();
                 }))
+        .on_page_load(|window, _payload| {
+            // Disable browser accelerator keys (F5 reload, Ctrl+R, etc.) in all webviews
+            // to prevent the window from reloading on F5 key press
+            #[cfg(target_os = "windows")]
+            {
+                let _ = window.with_webview(|webview| {
+                    unsafe {
+                        use webview2_com::Microsoft::Web::WebView2::Win32::ICoreWebView2Settings3;
+                        use windows::core::Interface;
+                        let core_webview = webview.controller().CoreWebView2().unwrap();
+                        let settings = core_webview.Settings().unwrap();
+                        let settings3: ICoreWebView2Settings3 = settings.cast().unwrap();
+                        settings3.SetAreBrowserAcceleratorKeysEnabled(false).unwrap();
+                    }
+                });
+            }
+            #[cfg(not(target_os = "windows"))]
+            let _ = window; // suppress unused warning on non-windows
+        })
         .on_window_event(|event| {
             // Get the trust state from the app handle
             let app_handle = event.window().app_handle();