Fix: CLI Windows Write `exe` Errors (#3239)

* fix: windows write exec errors
* revision: gate kill_all behind windows

packages/cli/src/serve/mod.rs

@@ -107,6 +107,11 @@ pub(crate) async fn serve_all(mut args: ServeArgs) -> Result<()> {
                 } else if runner.should_full_rebuild {
                     tracing::info!(dx_src = ?TraceSrc::Dev, "Full rebuild: {}", file);
 
+                    // Kill any running executables on Windows
+                    if cfg!(windows) {
+                        runner.kill_all();
+                    }
+
                     // We're going to kick off a new build, interrupting the current build if it's ongoing
                     builder.rebuild(args.build_arguments.clone());
 
@@ -215,6 +220,11 @@ pub(crate) async fn serve_all(mut args: ServeArgs) -> Result<()> {
                 // `Hotreloading:` to keep the alignment during long edit sessions
                 tracing::info!("Full rebuild: triggered manually");
 
+                // Kill any running executables on Windows
+                if cfg!(windows) {
+                    runner.kill_all();
+                }
+
                 builder.rebuild(args.build_arguments.clone());
                 runner.file_map.force_rebuild();
                 devserver.start_build().await

packages/cli/src/serve/runner.rs

@@ -141,6 +141,10 @@ impl AppRunner {
         self.running.remove(&platform);
     }
 
+    pub(crate) fn kill_all(&mut self) {
+        self.running.clear();
+    }
+
     /// Open an existing app bundle, if it exists
     pub(crate) async fn open_existing(&self, devserver: &WebServer) {
         if let Some(address) = devserver.server_address() {