Merge pull request #138 from Amagah/fix/131-sidecar-resource-dir

Create the sidecar resource dir in build.rs so a fresh clone builds

surfaces/gui/src-tauri/build.rs

@@ -1,3 +1,10 @@
 fn main() {
+    // tauri-build validates every `bundle.resources` path on every build, dev included, but
+    // `binaries/sidecar` is only staged by the release scripts and `/binaries` is gitignored —
+    // so a fresh checkout died on `resource path 'binaries/sidecar' doesn't exist`. Dev needs no
+    // packaged server (`server_bin()` falls back to the venv) and empty resource dirs are
+    // skipped, so a placeholder is enough.
+    std::fs::create_dir_all("binaries/sidecar").expect("create the sidecar resource dir");
+
     tauri_build::build()
 }