add auto tester retry loop and annotate std input

add tester_run_verification_command to tester; update tester summary fields description, and related

expand coder working scope

defining routes, improving graph and other work related to tester node

starting to work on tester node and consolidating some tools into a shared folder for reuse.

validate tool inputs with reusable pydantic types

tie up code and start working on the tester node

add submit_coder_summary tool

reestructure code of coder