fix(tui): restore open web ui command

packages/opencode/src/cli/cmd/tui/app.tsx

@@ -107,6 +107,7 @@ export function tui(input: {
   headers?: RequestInit["headers"]
   events?: EventSource
   onExit?: () => Promise<void>
+  onOpenWebUI?: () => Promise<string>
 }) {
   // promise to prevent immediate exit
   return new Promise<void>(async (resolve) => {
@@ -133,6 +134,7 @@ export function tui(input: {
                         fetch={input.fetch}
                         headers={input.headers}
                         events={input.events}
+                        onOpenWebUI={input.onOpenWebUI}
                       >
                         <SyncProvider>
                           <ThemeProvider mode={mode}>
@@ -536,6 +538,24 @@ function App() {
         renderer.toggleDebugOverlay()
         dialog.clear()
       },
+    },
+        {
+      title: "Open WebUI",
+      value: "webui.open",
+      onSelect: async () => {
+        try {
+          const urlToOpen = sdk.onOpenWebUI ? await sdk.onOpenWebUI() : sdk.url
+          await open(urlToOpen)
+        } catch (error) {
+          toast.show({
+            variant: "error",
+            message: "Failed to open WebUI",
+            duration: 3000,
+          })
+        }
+        dialog.clear()
+      },
+      category: "System",
     },
     {
       title: "Toggle console",

packages/opencode/src/cli/cmd/tui/context/sdk.tsx

@@ -15,6 +15,7 @@ export const { use: useSDK, provider: SDKProvider } = createSimpleContext({
     fetch?: typeof fetch
     headers?: RequestInit["headers"]
     events?: EventSource
+    onOpenWebUI?: () => Promise<string>
   }) => {
     const abort = new AbortController()
     const sdk = createOpencodeClient({
@@ -96,6 +97,6 @@ export const { use: useSDK, provider: SDKProvider } = createSimpleContext({
       if (timer) clearTimeout(timer)
     })
 
-    return { client: sdk, event: emitter, url: props.url }
+    return { client: sdk, event: emitter, url: props.url, onOpenWebUI: props.onOpenWebUI }
   },
 })

packages/opencode/src/cli/cmd/tui/thread.ts

@@ -164,6 +164,17 @@ export const TuiThreadCommand = cmd({
       onExit: async () => {
         await client.call("shutdown", undefined)
       },
+      onOpenWebUI: async () => {
+        if (shouldStartServer) {
+          // Server already running, return the URL
+          return url
+        } else {
+          // Start server on demand using default network options (localhost)
+          const defaultOpts = await resolveNetworkOptions({ port: 0, hostname: "127.0.0.1", mdns: false, "mdns-domain": "opencode.local", cors: [] })
+          const server = await client.call("server", defaultOpts)
+          return server.url
+        }
+      },
     })
 
     setTimeout(() => {