Sigma is an engineering teammate from Mnemoverse. Its first job is code review.

On every pull request, two independent reviewers, Sigma Bravo and Sigma Charlie, run your code and tests in an isolated sandbox. A fresh verifier from a different model provider then tries to disprove each finding before it is published. Every result arrives as its own review, tied to the exact commit, with the evidence behind it.

An incomplete run says so instead of pretending the code is clean. A closed thread never marks a defect as fixed. In this pilot the owner can defer a finding or ask for a recheck by replying in its thread, and sees progress, checks and cost for every run.

Sigma reviews and discusses. It does not push, fix or merge.

Private pilot.