[BUG] Systel prompt

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

/context shows this:

 Context Us ge                                                                                                                                                                                               
  ⎿   Context Usage   claude-opus-4-5-20251101 · 100k/200k tokens (50%)                                                                                                                                      
     ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁   claude opus-4- -2 251101 · 1   /200k tokens (50%)                                                                                                                                 
     ⛀ ⛁ ⛁ ⛁ ⛀ ⛁ ⛁ ⛁ ⛁ ⛁ imated usage by category                                                                                                                                                            
     ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁   Estimated usage by category8%)                                                                                                                                                    
     ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁   ⛁ Systel prompt: 3.6k tokens (1.8%)                                                                                                                                               
     ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁   ⛁ System tools: 17.4k tokens (8.7%)                                                                                                                                               
     ⛁ ⛁ ⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛶   ⛁ MCP tools: 5.6k tokens (2.8%)                                                                                                                                                   
     ⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛶   ⛁ Custom agents: 856 tokens (0.4%)                                                                                                                                                
     ⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛝ ⛝ ⛝   ⛁ Memory files: 6.2k tokens (3.1%)                                                                                                                                                
     ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝   ⛁ Skills: 1.5k tokens (0.8%)                                                                                                                                                      
     ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝   ⛁ Mpasages: 67.0k tokens (33.5%)                                                                                                                                                  
                           ⛶cFree space: 53k (26.5%)kens (22.5%)                                                                                                                                             
                           ⛝ Auto ompact buffer: 45.0k tokens (22.5%)                                                                                                                                        
...

What Should Happen?

Systel prompt should be System prompt ?

Error Messages/Logs

Steps to Reproduce

1. Run claude
2. /context

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

v2.1.15

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_