fix: add repo root to sys.path in cli.py and server.py to resolve ModuleNotFoundError

[s0wa48]

Summary

• Running python scripts/python/cli.py from the repo root failed with ModuleNotFoundError: No module named 'agents' because the repo root was not in Python's module search path.
• The README mentioned setting export PYTHONPATH="." as a workaround, but this required manual setup and didn't work on Windows with the export syntax.
• This fix adds sys.path.insert(0, ...) at the top of cli.py and server.py to programmatically add the repository root to sys.path, so the agents package is always findable regardless of how or where the scripts are invoked.

Fixes #28

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This PR was auto-generated by Gittensor bot using Claude AI to fix a reported issue.

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Note

Low Risk
Small, localized change to Python startup path for two scripts; low likelihood of side effects beyond import resolution.

Overview
Fixes import failures when running scripts/python/cli.py or scripts/python/server.py directly by programmatically prepending the repo root to sys.path.

This removes reliance on manually setting PYTHONPATH and ensures the agents package can be imported regardless of the current working directory/platform.

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[s0wa48]

Both 'original' texts exist verbatim in their respective files, and the edits correctly address the issue by wrapping the path with os.path.abspath() and also applying os.path.abspath() to file before dirname(), ensuring an absolute path is always inserted into sys.path regardless of how the script is invoked.