From 0c0cfd2d22c228f7a3a130eab2bb7a53b821e24a Mon Sep 17 00:00:00 2001
From: Shantur Rathore <i@shantur.com>
Date: Wed, 8 Apr 2026 19:02:06 +0100
Subject: [PATCH] fix(ui): keep speech input chained and scrolled to bottom

---
 .../components/prompt-input/usePromptVoiceInput.ts  | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/packages/ui/src/components/prompt-input/usePromptVoiceInput.ts b/packages/ui/src/components/prompt-input/usePromptVoiceInput.ts
index 0b8f93f8..6bcc8746 100644
--- a/packages/ui/src/components/prompt-input/usePromptVoiceInput.ts
+++ b/packages/ui/src/components/prompt-input/usePromptVoiceInput.ts
@@ -169,18 +169,25 @@ export function usePromptVoiceInput(options: UsePromptVoiceInputOptions) {
     const textarea = options.getTextarea()
     const start = textarea ? textarea.selectionStart : current.length
     const end = textarea ? textarea.selectionEnd : current.length
+    const wasCursorAtEnd = end === current.length
+    const wasScrolledToBottom = textarea
+      ? textarea.scrollHeight - (textarea.scrollTop + textarea.clientHeight) <= 4
+      : false
     const before = current.slice(0, start)
     const after = current.slice(end)
-    const prefix = before.length > 0 && !/\s$/.test(before) ? " " : ""
-    const suffix = after.length > 0 && !/^\s/.test(after) ? " " : ""
+    const prefix = ""
+    const suffix = after.length > 0 && !after.startsWith("\n") ? "\n" : ""
     const nextValue = `${before}${prefix}${text}${suffix}${after}`
-    const cursor = before.length + prefix.length + text.length
+    const cursor = before.length + prefix.length + text.length + suffix.length
 
     options.setPrompt(nextValue)
     if (textarea) {
       setTimeout(() => {
         textarea.focus()
         textarea.setSelectionRange(cursor, cursor)
+        if (wasCursorAtEnd || wasScrolledToBottom) {
+          textarea.scrollTop = textarea.scrollHeight
+        }
       }, 0)
     }
   }