docs: update README task list with detailed objective descriptions and expand 72b_eval.txt coverage

feat: expand task suite to 22 challenges and update reward signal mechanics

refactor: enforce strictly positive reward range [0.01, 0.99] and update documentation accordingly

docs: update task list in README and add evaluation file to gitignore

fix: hf metadata colorTo

docs: add design and rubric documentation and update gitignore to exclude temporary task files

feat: implement ReAct agent architecture with robust JSON parsing and expanded task suite

updated readme.md

inital commit phase 1

initial commit