Run Windows portable build without a console window

Author: Xiiiing

.github/workflows/windows-portable.yml

@@ -14,6 +14,10 @@ jobs:
 
       - uses: dtolnay/rust-toolchain@stable
 
+      - uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: . -> target
+
       - uses: actions/setup-node@v4
         with:
           node-version: 22

apps/desktop/src-tauri/src/main.rs

@@ -1,3 +1,5 @@
+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
+
 fn main() {
     codex_notify_desktop_lib::run()
 }