some improve for sms delivery

static/js/conversation.js

@@ -36,7 +36,7 @@ document.querySelectorAll('[data-conversation-workspace]').forEach(workspace=>{
   const replyResult=workspace.dataset.replyResult||new URLSearchParams(location.search).get('reply_result')||'';
   const submissionSucceeded=replyResult==='reply'||replyResult==='note';
   if(submissionSucceeded){sessionStorage.removeItem(`${baseKey}-reply`);sessionStorage.removeItem(`${baseKey}-note`)}
-  const setComposerOpen=(open,focus=true)=>{composer?.classList.toggle('is-collapsed',!open);composerToggle?.setAttribute('aria-expanded',String(open));if(open&&focus)setTimeout(()=>input?.focus(),80)};
+  const setComposerOpen=(open,focus=true)=>{const keepLatestVisible=atBottom();composer?.classList.toggle('is-collapsed',!open);composerToggle?.setAttribute('aria-expanded',String(open));requestAnimationFrame(()=>{if(keepLatestVisible)scrollLatest(false)});if(open&&focus)setTimeout(()=>input?.focus(),80)};
   const saveDraft=()=>{if(!input)return;sessionStorage.setItem(draftKey(),input.value);if(status){status.textContent=input.value?'پیش‌نویس ذخیره شد':'';clearTimeout(saveDraft.timer);saveDraft.timer=setTimeout(()=>status.textContent='',1800)}};
   const loadDraft=()=>{if(!input)return;input.value=sessionStorage.getItem(draftKey())||'';resize();input.dispatchEvent(new Event('input',{bubbles:true}))};
   if(input){input.setAttribute('rows','5');input.setAttribute('placeholder','شرح کامل پاسخ، اطلاعات تکمیلی و نتیجه مورد انتظار خود را بنویسید…');input.addEventListener('input',()=>{resize();saveDraft()});loadDraft()}