tui: show exit message banner (#11733)

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

@@ -1,23 +1,52 @@
 import { useRenderer } from "@opentui/solid"
 import { createSimpleContext } from "./helper"
 import { FormatError, FormatUnknownError } from "@/cli/error"
+type Exit = ((reason?: unknown) => Promise<void>) & {
+  message: {
+    set: (value?: string) => () => void
+    clear: () => void
+    get: () => string | undefined
+  }
+}
 
 export const { use: useExit, provider: ExitProvider } = createSimpleContext({
   name: "Exit",
   init: (input: { onExit?: () => Promise<void> }) => {
     const renderer = useRenderer()
-    return async (reason?: any) => {
-      // Reset window title before destroying renderer
-      renderer.setTerminalTitle("")
-      renderer.destroy()
-      await input.onExit?.()
-      if (reason) {
-        const formatted = FormatError(reason) ?? FormatUnknownError(reason)
-        if (formatted) {
-          process.stderr.write(formatted + "\n")
+    let message: string | undefined
+    const store = {
+      set: (value?: string) => {
+        const prev = message
+        message = value
+        return () => {
+          message = prev
         }
-      }
-      process.exit(0)
+      },
+      clear: () => {
+        message = undefined
+      },
+      get: () => message,
     }
+    const exit: Exit = Object.assign(
+      async (reason?: unknown) => {
+        // Reset window title before destroying renderer
+        renderer.setTerminalTitle("")
+        renderer.destroy()
+        await input.onExit?.()
+        if (reason) {
+          const formatted = FormatError(reason) ?? FormatUnknownError(reason)
+          if (formatted) {
+            process.stderr.write(formatted + "\n")
+          }
+        }
+        const text = store.get()
+        if (text) process.stdout.write(text + "\n")
+        process.exit(0)
+      },
+      {
+        message: store,
+      },
+    )
+    return exit
   },
 })

packages/opencode/src/cli/cmd/tui/routes/session/index.tsx

@@ -77,6 +77,7 @@ import { PermissionPrompt } from "./permission"
 import { QuestionPrompt } from "./question"
 import { DialogExportOptions } from "../../ui/dialog-export-options"
 import { formatTranscript } from "../../util/transcript"
+import { UI } from "@/cli/ui.ts"
 
 addDefaultParsers(parsers.parsers)
 
@@ -222,6 +223,18 @@ export function Session() {
 
   // Allow exit when in child session (prompt is hidden)
   const exit = useExit()
+
+  createEffect(() => {
+    return exit.message.set(
+      [
+        ``,
+        `  █▀▀█  ${UI.Style.TEXT_DIM}${session()?.title}${UI.Style.TEXT_NORMAL}`,
+        `  █  █  ${UI.Style.TEXT_DIM}opencode -s ${session()?.id}${UI.Style.TEXT_NORMAL}`,
+        `  ▀▀▀▀  `,
+      ].join("\n"),
+    )
+  })
+
   useKeyboard((evt) => {
     if (!session()?.parentID) return
     if (keybind.match("app_exit", evt)) {