Method handle_restore

crates/chat-cli/src/cli/chat/cli/checkpoint.rs:168–237

(
        &self,
        session: &mut ChatSession,
        tag: Option<String>,
        hard: bool,
    )

    }

    async fn handle_restore(
        &self,
        session: &mut ChatSession,
        tag: Option<String>,
        hard: bool,
    ) -> Result<ChatState, ChatError> {
        // Take manager out temporarily to avoid borrow issues
        let Some(manager) = session.conversation.checkpoint_manager.take() else {
            execute!(
                session.stderr,
                StyledText::warning_fg(),
                style::Print("⚠️ Checkpoints not enabled. Use '/checkpoint init' to enable.\n"),
                StyledText::reset(),
            )?;
            return Ok(ChatState::PromptUser {
                skip_printing_tools: true,
            });
        };

        let tag_result = if let Some(tag) = tag {
            Ok(tag)
        } else {
            // Interactive selection
            match gather_turn_checkpoints(&manager) {
                Ok(entries) => {
                    if let Some(idx) = select_checkpoint(&entries, "Select checkpoint to restore:") {
                        Ok(entries[idx].tag.clone())
                    } else {
                        Err(())
                    }
                },
                Err(e) => {
                    session.conversation.checkpoint_manager = Some(manager);
                    return Err(ChatError::Custom(format!("Failed to gather checkpoints: {}", e).into()));
                },
            }
        };

        let tag = match tag_result {
            Ok(tag) => tag,
            Err(_) => {
                session.conversation.checkpoint_manager = Some(manager);
                return Ok(ChatState::PromptUser {
                    skip_printing_tools: true,
                });
            },
        };

        match manager.restore(&mut session.conversation, &tag, hard) {
            Ok(_) => {
                execute!(
                    session.stderr,
                    StyledText::info_fg(),
                    style::SetAttribute(Attribute::Bold),
                    style::Print(format!("✓ Restored to checkpoint {}\n", tag)),
                    StyledText::reset(),
                    StyledText::reset_attributes(),
                )?;