fix(home): simplify enter-to-send queued message to single press (#4008)

* fix(home): simplify enter-to-send queued message to single press

* fix(home): prevent empty submit fallthrough when sending with empty input

apps/sim/app/workspace/[workspaceId]/home/components/mothership-chat/mothership-chat.tsx

@@ -1,6 +1,6 @@
 'use client'
 
-import { useCallback, useEffect, useLayoutEffect, useRef } from 'react'
+import { useCallback, useLayoutEffect, useRef } from 'react'
 import { cn } from '@/lib/core/utils/cn'
 import { MessageActions } from '@/app/workspace/[workspaceId]/components'
 import { ChatMessageAttachments } from '@/app/workspace/[workspaceId]/home/components/chat-message-attachments'
@@ -99,41 +99,16 @@ export function MothershipChat({
   const hasMessages = messages.length > 0
   const initialScrollDoneRef = useRef(false)
 
-  const primedQueueIdRef = useRef<string | null>(null)
-  const primeTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null)
   const messageQueueRef = useRef(messageQueue)
   messageQueueRef.current = messageQueue
   const onSendQueuedMessageRef = useRef(onSendQueuedMessage)
   onSendQueuedMessageRef.current = onSendQueuedMessage
 
-  const clearPrimed = useCallback(() => {
-    primedQueueIdRef.current = null
-    if (primeTimerRef.current) {
-      clearTimeout(primeTimerRef.current)
-      primeTimerRef.current = null
-    }
-  }, [])
-
   const handleEnterWhileEmpty = useCallback(() => {
     const topMessage = messageQueueRef.current[0]
     if (!topMessage) return false
-
-    if (primedQueueIdRef.current === topMessage.id) {
-      clearPrimed()
-      void onSendQueuedMessageRef.current(topMessage.id)
-      return true
-    }
-
-    primedQueueIdRef.current = topMessage.id
-    if (primeTimerRef.current) clearTimeout(primeTimerRef.current)
-    primeTimerRef.current = setTimeout(clearPrimed, 3000)
+    void onSendQueuedMessageRef.current(topMessage.id)
     return true
-  }, [clearPrimed])
-
-  useEffect(() => {
-    return () => {
-      if (primeTimerRef.current) clearTimeout(primeTimerRef.current)
-    }
   }, [])
 
   useLayoutEffect(() => {
@@ -235,7 +210,6 @@ export function MothershipChat({
             editValue={editValue}
             onEditValueConsumed={onEditValueConsumed}
             onEnterWhileEmpty={handleEnterWhileEmpty}
-            onPrimedDismiss={clearPrimed}
           />
         </div>
       </div>

apps/sim/app/workspace/[workspaceId]/home/components/user-input/user-input.tsx

@@ -109,7 +109,6 @@ interface UserInputProps {
   userId?: string
   onContextAdd?: (context: ChatContext) => void
   onEnterWhileEmpty?: () => boolean
-  onPrimedDismiss?: () => void
 }
 
 export function UserInput({
@@ -123,7 +122,6 @@ export function UserInput({
   userId,
   onContextAdd,
   onEnterWhileEmpty,
-  onPrimedDismiss,
 }: UserInputProps) {
   const { workspaceId } = useParams<{ workspaceId: string }>()
   const { data: workflowsById = {} } = useWorkflowMap(workspaceId)
@@ -456,7 +454,8 @@ export function UserInput({
     (e: React.KeyboardEvent<HTMLTextAreaElement>) => {
       if (e.key === 'Enter' && !e.shiftKey && !e.nativeEvent.isComposing) {
         e.preventDefault()
-        if (isSendingRef.current && !valueRef.current.trim() && onEnterWhileEmptyRef.current?.()) {
+        if (isSendingRef.current && !valueRef.current.trim()) {
+          onEnterWhileEmptyRef.current?.()
           return
         }
         handleSubmit()
@@ -551,9 +550,8 @@ export function UserInput({
 
       setValue(newValue)
       restartRecognition(newValue)
-      if (newValue.trim()) onPrimedDismiss?.()
     },
-    [restartRecognition, onPrimedDismiss]
+    [restartRecognition]
   )
 
   const handleSelectAdjust = useCallback(() => {