Implement

implement reads the complete issue and treats it as the source of truth.

Behavior

• Change only the agreed scope.
• Prefer the smallest coherent implementation.
• Run focused checks throughout and broader relevant checks at the end.
• Record safe reversible assumptions when autonomous mode is active.

Boundary

Implementation reports the diff, checks, and remaining uncertainty. Passing static checks is not runtime verification.

/implement https://github.com/owner/repo/issues/123