support storing thoughts outside of code repo

[airtonix]

I don't want my code repo to the be repo where the thoughts are stored.

let me specify with

• <thecoderepo/.agentic.json

  { "thoughts": "~/Thoughts/thecoderepo/" } 

• ~/.config/agentic/config.json

  { 
     projects: [
       { "id": "thecoderepo", "thoughts": "~/Thoughts/thecoderepo/" }  
     ]
  }