tui: pass dynamic port to frontend

Frontend now receives the server port via window.__OPENCODE__.port,
allowing it to connect when using a random free port instead of hardcoded 4096

packages/desktop/src/app.tsx

@@ -15,8 +15,14 @@ import { GlobalSDKProvider } from "./context/global-sdk"
 import { SessionProvider } from "./context/session"
 import { Show } from "solid-js"
 
+declare global {
+  interface Window {
+    __OPENCODE__?: { updaterEnabled?: boolean; port?: number }
+  }
+}
+
 const host = import.meta.env.VITE_OPENCODE_SERVER_HOST ?? "127.0.0.1"
-const port = import.meta.env.VITE_OPENCODE_SERVER_PORT ?? "4096"
+const port = window.__OPENCODE__?.port ?? import.meta.env.VITE_OPENCODE_SERVER_PORT ?? "4096"
 
 const url =
   new URLSearchParams(document.location.search).get("url") ||

packages/tauri/src-tauri/src/lib.rs

@@ -175,7 +175,8 @@ pub fn run() {
                         .initialization_script(format!(
                             r#"
                           window.__OPENCODE__ ??= {{}};
-                          window.__OPENCODE__.updaterEnabled = {updater_enabled}
+                          window.__OPENCODE__.updaterEnabled = {updater_enabled};
+                          window.__OPENCODE__.port = {port};
                         "#
                         ));
 

packages/tauri/src/index.tsx

@@ -47,12 +47,6 @@ const platform: Platform = {
   },
 }
 
-declare global {
-  interface Window {
-    __OPENCODE__?: { updaterEnabled?: boolean }
-  }
-}
-
 render(() => {
   onMount(() => {
     if (window.__OPENCODE__?.updaterEnabled) runUpdater()