fix(wry): recover from WebView2 process failures

src-tauri/src/lib.rs

@@ -9,6 +9,8 @@ mod startup_recovery;
 #[cfg(all(not(target_os = "windows"), not(test)))]
 #[path = "startup_recovery_noop.rs"]
 mod startup_recovery;
+#[cfg(any(target_os = "windows", test))]
+mod webview2_recovery;
 mod window_state_guard;
 
 use commands::connection::AppState;
@@ -1485,6 +1487,8 @@ pub fn run() {
             commands::ssh_prompt::install_ssh_notice_bridge(app.handle());
             #[cfg(target_os = "macos")]
             macos_app_delegate::install_dock_quit_handler(app.handle());
+            #[cfg(target_os = "windows")]
+            webview2_recovery::install(app.handle());
             let startup_links = commands::deep_link::connection_deep_links_from_args(std::env::args().skip(1));
             open_connection_deep_links(app.handle(), startup_links);
 

src-tauri/src/startup_recovery.rs

@@ -8,6 +8,8 @@ use std::time::Duration;
 use tauri::Manager;
 
 const STARTUP_LOG_FILE: &str = "startup.log";
+#[cfg(target_os = "windows")]
+const RUNTIME_RECOVERY_LOG_FILE: &str = "webview2-recovery.log";
 const STARTUP_LOG_DIR_ENV: &str = "DBX_STARTUP_LOG_DIR";
 const KEEP_STARTUP_LOG_ENV: &str = "DBX_KEEP_STARTUP_LOG";
 #[cfg(target_os = "windows")]
@@ -166,6 +168,21 @@ fn write_line(path: &Path, line: &str) {
     let _ = writeln!(file, "{line}");
 }
 
+/// Appends a runtime (post-startup) recovery event to a dedicated log file
+/// (`webview2-recovery.log` next to `startup.log`).
+///
+/// Unlike the `log` facade, this is **not** gated by the desktop
+/// `debug_logging_enabled` setting (`apply_debug_log_level` sets the global
+/// `log::set_max_level` to `Off` in packaged builds by default), so packaged
+/// Windows builds always record WebView2 process-failure recovery decisions
+/// on affected devices. The `log`/`eprintln` channels are still used on top
+/// of this in debug builds.
+#[cfg(target_os = "windows")]
+pub(crate) fn record_runtime_recovery_event(message: impl AsRef<str>) {
+    let Some(dir) = startup_log_dir() else { return };
+    write_line(&dir.join(RUNTIME_RECOVERY_LOG_FILE), &format_probe_line(message.as_ref()));
+}
+
 fn format_probe_line(message: &str) -> String {
     format!("[{}][pid={}] {message}", chrono::Local::now().format("%Y-%m-%d %H:%M:%S%.3f"), std::process::id())
 }