Handle bot Responses

- [ ] Interrupt a ongoing bot response

**Retry Last Message**

- [ ] deletes failed response and resends last message to backend

**Edit A Message**

- [ ] Hover should show edit button
- [ ] edit makes the Message Editable
- [ ] Removing Focus out of input should disable edit
- [ ] Removes All messages until the message to be edited and resends it

No files or tests are named. Start by locating the React chat response and message-editing entry points, then verify each checklist item: interrupting responses, retrying failed messages, editing on hover, cancelling edit on focus loss, and resending from the edited message.

Written by the indexing model from the issue text.