Bisect a Next.js regression

Find the narrowest reliable history boundary supported by real executions. Do not guess a commit or pull request from code similarity.

Preconditions

• Require an executable reproduction with a deterministic pass/fail signal.
• Require verification that establishes the direction:
  • a bug still present on canary calls for an introduction boundary;
  • a bug fixed on canary calls for a fix boundary.
• If either prerequisite is unreliable, return inconclusive.

Workflow