TodoWrite tool no longer outputs visual checkbox list - only shows success message

Issue Body:

## Problem Description
The TodoWrite tool has stopped displaying the visual checkbox todo list. Previously, when Claude used the TodoWrite tool, it would output a formatted list with
checkboxes showing all tasks and their status. Now it only outputs a generic success message.

## Current Behavior (Broken)
When TodoWrite tool is used, the output is only:
Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

## Expected Behavior (What it used to do)
The tool should output a visual todo list like:
📝 Current Tasks:
☐ Task 1 description (pending)
☑ Task 2 description (completed)
☐ Task 3 description (pending)
⬜ Task 4 description (in_progress)

## Impact

• Cannot see what tasks Claude is tracking
• Cannot see task progress or status
• Lost visibility into Claude's task management
• Makes complex multi-step work much harder to follow

## Steps to Reproduce

1. Ask Claude to create a todo list for any multi-step task
2. Claude uses TodoWrite tool
3. Output shows only success message, no visual list

## Environment

• Claude Code CLI
• TodoWrite tool
• Version: [Latest as of Oct 2024]

## Request
Please restore the visual checkbox output for the TodoWrite tool so users can see what tasks are being tracked and their current status.