diff --git a/src/App.jsx b/src/App.jsx
index 272a6cd..4eb712e 100644
--- a/src/App.jsx
+++ b/src/App.jsx
@@ -475,204 +475,6 @@ export default function App() {
     await regenerateFromIndex(index, next);
   }
 
-async function regenerateFromIndex(index, overrideUserText = null) {
-  const sessionId = activeSessionId
-  if (isSending || !sessionId || typeof index !== 'number') return
-
-  const msgs = (chatSessions.find(s => s.session_id === sessionId)?.messages) || []
-  let lastUserIdx = index
-  for (let i = index; i >= 0; i--) {
-    if (msgs[i]?.role === 'user') {
-      lastUserIdx = i
-      break
-    }
-  }
-
-  setChatSessions(prev =>
-    prev.map(s => s.session_id === sessionId
-      ? { ...s, messages: (s.messages || []).slice(0, lastUserIdx + 1) }
-      : s
-    )
-  )
-
-  const conversationNeedsVision = msgs
-    .slice(0, lastUserIdx + 1)
-    .some(messageHasImageAttachments)
-  if (conversationNeedsVision && !canAttachImages) {
-    window.alert(imageAttachmentUnavailableReason)
-    return
-  }
-
-  const requestController = beginCancelableRequest(sessionId)
-
-  let enrichedPrompt = overrideUserText != null ? overrideUserText : (msgs[lastUserIdx]?.content || '')
-  let citationSources = []
-  const contextBlocks = []
-  try {
-    const selectedLibrary = getChatLibraryForSession(sessionId)
-    const promptText = overrideUserText != null ? overrideUserText : (msgs[lastUserIdx]?.content || '')
-    const hasPromptText = Boolean((promptText || '').trim())
-
-    if (hasPromptText && selectedLibrary?.states?.is_indexed) {
-      try {
-        const localContext = await fetchLocalLibraryContext(backendApiUrl, selectedLibrary.slug, promptText, requestController.signal)
-        if (localContext.contextBlock) {
-          contextBlocks.push(localContext.contextBlock)
-        }
-        if (Array.isArray(localContext.sources)) {
-          citationSources.push(...localContext.sources)
-        }
-      } catch (error) {
-        if (isAbortError(error)) throw error
-        console.warn('local library enrichment (regenerate) failed', error)
-      }
-    }
-
-    if (hasPromptText && webSearchEnabled) {
-      try {
-        const historyForSearch = msgs
-          .slice(Math.max(0, lastUserIdx - 7), lastUserIdx + 1)
-          .map(m => ({ role: m.role, content: m.content || '' }))
-        if (historyForSearch.length > 0) {
-          historyForSearch[historyForSearch.length - 1] = { role: 'user', content: promptText }
-        }
-
-        const searchContext = await fetchWebSearchContext({
-          apiBase: backendApiUrl,
-          engines: searxEngines,
-          historyLimit: 8,
-          messages: historyForSearch,
-          model,
-          prompt: promptText,
-          searxUrl,
-          signal: requestController.signal,
-        })
-        if (searchContext.contextBlock) {
-          contextBlocks.push(searchContext.contextBlock)
-        }
-        if (Array.isArray(searchContext.sources)) {
-          citationSources.push(...searchContext.sources)
-        }
-      } catch (error) {
-        if (isAbortError(error)) throw error
-        console.warn('web search enrichment (regenerate) failed', error)
-      }
-    }
-
-    citationSources = [...new Set(citationSources)]
-    if (hasPromptText && contextBlocks.length > 0) {
-      enrichedPrompt = `${promptText}\n\n${contextBlocks.join('\n\n')}`
-    } else {
-      enrichedPrompt = null
-    }
-
-    if (streamOutput) {
-      const assistantMsgId = `msg-${Date.now()}-${Math.random()}`
-      let full = ''
-
-      setChatSessions(prev =>
-        prev.map(s => s.session_id === sessionId
-          ? { ...s, messages: [...(s.messages || []), { id: assistantMsgId, role: 'assistant', content: '', sources: citationSources }] }
-          : s
-        )
-      )
-
-      try {
-        const res = await postRegenerateMessage({
-          apiBase: backendApiUrl,
-          enrichedMessage: enrichedPrompt,
-          index,
-          model,
-          sessionId,
-          signal: requestController.signal,
-          sources: citationSources || [],
-          stream: true,
-          transcriptionModel,
-          visionModel,
-        })
-        if (!res.ok) throw new Error(await readBackendErrorText(res))
-
-        const reader = res.body?.getReader()
-        if (!reader) throw new Error('Missing response body')
-
-        const decoder = new TextDecoder()
-        let unreadMarked = false
-
-        while (true) {
-          const { value, done } = await reader.read()
-          if (done) break
-
-          const chunk = decoder.decode(value, { stream: true })
-          full += chunk
-          setAssistantMessageContent(sessionId, assistantMsgId, full)
-
-          if (!unreadMarked && activeSessionIdRef.current !== sessionId) {
-            unreadMarked = true
-            setPendingScrollToLastUser(prev => ({ ...prev, [sessionId]: assistantMsgId }))
-            setUnreadSessions(prev => [...new Set([...prev, sessionId])])
-          }
-        }
-
-        if (activeSessionIdRef.current !== sessionId) {
-          setPendingScrollToLastUser(prev => ({ ...prev, [sessionId]: assistantMsgId }))
-          setUnreadSessions(prev => [...new Set([...prev, sessionId])])
-        } else if (!userScrolledUpRef.current[sessionId]) {
-          requestAnimationFrame(() => scrollMessageToTop(assistantMsgId, 'smooth', sessionId))
-        } else {
-          setNewMsgTip(prev => ({ ...prev, [sessionId]: assistantMsgId }))
-        }
-      } catch (error) {
-        if (isAbortError(error)) {
-          setAssistantMessageContent(sessionId, assistantMsgId, full, { removeIfEmpty: true })
-          return
-        }
-
-        console.error(error)
-        setAssistantMessageContent(sessionId, assistantMsgId, `Error: ${getErrorText(error)}`, { removeIfEmpty: true })
-        return
-      }
-    } else {
-      const res = await postRegenerateMessage({
-        apiBase: backendApiUrl,
-        enrichedMessage: enrichedPrompt,
-        index,
-        model,
-        sessionId,
-        signal: requestController.signal,
-        sources: citationSources || [],
-        stream: false,
-        transcriptionModel,
-        visionModel,
-      })
-      if (!res.ok) throw new Error(await readBackendErrorText(res))
-
-      const data = await res.json()
-      const assistantMsgId = `msg-${Date.now()}`
-      setChatSessions(prev =>
-        prev.map(s => s.session_id === sessionId
-          ? { ...s, messages: [...(s.messages || []), { role: 'assistant', content: data.reply, id: assistantMsgId, sources: citationSources }] }
-          : s
-        )
-      )
-
-      if (activeSessionIdRef.current !== sessionId) {
-        setPendingScrollToLastUser(prev => ({ ...prev, [sessionId]: assistantMsgId }))
-        setUnreadSessions(prev => [...new Set([...prev, sessionId])])
-      } else if (!userScrolledUpRef.current[sessionId]) {
-        requestAnimationFrame(() => scrollMessageToTop(assistantMsgId, 'smooth', sessionId))
-      } else {
-        setNewMsgTip(prev => ({ ...prev, [sessionId]: assistantMsgId }))
-      }
-    }
-  } catch (error) {
-    if (!isAbortError(error)) {
-      console.error(error)
-    }
-  } finally {
-    finishCancelableRequest(requestController)
-  }
-}
-
 
   // Collapse state per user message: { [msgKey]: boolean } — true means "collapsed"
   const [collapsedUserMsgs, setCollapsedUserMsgs] = useState({});