feat(design): add design scheme support and UI improvements

- Implement design scheme system with palette, typography, and feature customization
- Add color scheme dialog for user customization
- Update chat UI components to use design scheme values
- Improve header actions with consolidated deploy and export buttons
- Adjust layout spacing and styling across multiple components (chat, workbench etc...)
- Add model and provider info to chat messages
- Refactor workbench and sidebar components for better responsiveness

app/lib/persistence/ChatDescription.client.tsx

@@ -49,16 +49,14 @@ export function ChatDescription() {
           {currentDescription}
           <TooltipProvider>
             <WithTooltip tooltip="Rename chat">
-              <div className="flex justify-between items-center p-2 rounded-md bg-bolt-elements-item-backgroundAccent ml-2">
-                <button
-                  type="button"
-                  className="i-ph:pencil-fill scale-110 hover:text-bolt-elements-item-contentAccent"
-                  onClick={(event) => {
-                    event.preventDefault();
-                    toggleEditMode();
-                  }}
-                />
-              </div>
+              <button
+                type="button"
+                className="ml-2 i-ph:pencil-fill scale-110 hover:text-bolt-elements-item-contentAccent"
+                onClick={(event) => {
+                  event.preventDefault();
+                  toggleEditMode();
+                }}
+              />
             </WithTooltip>
           </TooltipProvider>
         </>