fix(env): fix vite config to integrate with tauri (#128)

## Summary by Sourcery

Align Vite development server configuration with Tauri requirements for
the UI package.

Enhancements:
- Configure Vite dev server with fixed Tauri ports, optional host-based
HMR, and ignored `src-tauri` directory to support Tauri development
workflows.

Chores:
- Add a changeset entry documenting the Vite–Tauri integration change
and remove the unused example environment file.

1 files changed, 20 insertions, 1 deletions

diff --git a/packages/ui/vite.config.ts b/packages/ui/vite.config.ts
index 241ca8f..34df162 100644
--- a/packages/ui/vite.config.ts
+++ b/packages/ui/vite.config.ts
@@ -3,12 +3,31 @@ import tailwindcss from "@tailwindcss/vite";
 import react from "@vitejs/plugin-react";
 import { defineConfig } from "vite";
 
+const host = process.env.TAURI_DEV_HOST;
+
 // https://vite.dev/config/
 export default defineConfig({
   plugins: [react(), tailwindcss()],
+  // Vite options tailored for Tauri development and only applied in `tauri dev` or `tauri build`
+  //
+  // 1. prevent Vite from obscuring rust errors
+  clearScreen: false,
+  // 2. tauri expects a fixed port, fail if that port is not available
   server: {
-    port: 5173,
+    port: 1420,
     strictPort: true,
+    host: host || false,
+    hmr: host
+      ? {
+          protocol: "ws",
+          host,
+          port: 1421,
+        }
+      : undefined,
+    watch: {
+      // 3. tell Vite to ignore watching `src-tauri`
+      ignored: ["**/src-tauri/**"],
+    },
   },
   resolve: {
     alias: {