For anyone interested in ditching anthropic's system prompt alltogether

https://github.com/franciscocarloserra/claude-code-context-d...

    Claude Code v2.1.319
  Opus 5.5 with medium effort · Claude Pro

 what's my email                                                                                

● ----@gmail.com

    Claude Code v2.1.319
  Opus 5.5 with medium effort · Claude Pro

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 /custom 
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 do you have my email in context?                                                              

● No [...]