feat(verify): add revision-bound capability evidence matrix - #105

Awaiting 1 independent maintainer approval(s) of current head 6852684ed3879dd4b368698112ac6c690111aee9; found 0. Branch rules and specification governance also apply.

On December 2, 2026, GitHub will restrict `pull_request_target` on public repositories by default. To continue allowing the event trigger, configure an Actions policy. Learn more: https://gh.io/securely-using-pull_request_target#default-policy-for-pull_request_target