Make prepush run the same goneat assessment as the pre-push hook, and remove a custom reader that tripped staticcheck in stream get.

Changes:

- Update Makefile prepush to run goneat assess format,lint,security,dependencies

- Use bytes.NewReader for stream chunk writes to satisfy staticcheck

Generated by OpenAI via OpenCode under supervision of @3leapsdave

Role: entarch

Co-Authored-By: OpenAI <noreply@3leaps.net>

Committer-of-Record: @3leapsdave